10-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-K

ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE

SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended December 31, 2013

OR

TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE

SECURITIES EXCHANGE ACT OF 1934

For the transition period from                     to                     

Commission file number: 1-9260

UNIT CORPORATION

(Exact name of registrant as specified in its charter)

Delaware	73-1283193
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)
7130 South Lewis, Suite 1000 Tulsa, Oklahoma	74136
(Address of principal executive offices)	(Zip Code)

(Registrant’s telephone number, including area code) (918) 493-7700

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Name of each exchange on which registered
Common Stock, par value $.20 per share	NYSE
Rights to Purchase Series A Participating Cumulative Preferred Stock	NYSE

Securities registered pursuant to Section 12(g) of the Act: None

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.

Yes [x]    No [ ]

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Exchange Act.

Yes [ ]    No [x]

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes [x]    No [ ]

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes [x]    No [ ]

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K. [x]

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer”, “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer    [x] Accelerated filer    [ ] Non-accelerated filer    [ ] Smaller reporting company    [ ]

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).

Yes [ ]    No [x]

As of June 30, 2013, the aggregate market value of the voting and non-voting common equity (based on the closing price of the stock on the NYSE on June 30, 2013) held by non-affiliates was approximately $1,080,689,810 Determination of stock ownership by non-affiliates was made solely for the purpose of this requirement, and the registrant is not bound by these determinations for any other purpose.

Indicate the number of shares outstanding of each of the issuer’s classes of common stock, as of the latest practicable date.

Class	Outstanding at February 14, 2014
Common Stock, $0.20 par value per share	49,232,860 shares

DOCUMENTS INCORPORATED BY REFERENCE

Document	Parts Into Which Incorporated
Portions of the registrant’s definitive proxy statement (the “Proxy Statement”) with respect to its annual meeting of shareholders scheduled to be held on May 7, 2014. The Proxy Statement shall be filed within 120 days after the end of the fiscal year to which this report relates.	Part III

Exhibit Index—See Page 119

FORM 10-K

UNIT CORPORATION

TABLE OF CONTENTS

		Page
	PART I
Item 1.	Business	1
Item 1A.	Risk Factors	22
Item 1B.	Unresolved Staff Comments	37
Item 2.	Properties	37
Item 3.	Legal Proceedings	38
Item 4.	Mine Safety Disclosures	38
	PART II
Item 5.	Market for the Registrant’s Common Equity, Related Stockholder Matters, and Issuer Purchases of Equity Securities	38
Item 6.	Selected Financial Data	40
Item 7.	Management’s Discussion and Analysis of Financial Condition and Results of Operation	41
Item 7A.	Quantitative and Qualitative Disclosures about Market Risk	66
Item 8.	Financial Statements and Supplementary Data	68
Item 9.	Changes in and Disagreements with Accountants on Accounting and Financial Disclosure	109
Item 9A.	Controls and Procedures	109
Item 9B.	Other Information	110
	PART III
Item 10.	Directors, Executive Officers, and Corporate Governance	110
Item 11.	Executive Compensation	111
Item 12.	Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters	112
Item 13.	Certain Relationships and Related Transactions, and Director Independence	112
Item 14.	Principal Accountant Fees and Services	112
	PART IV
Item 15.	Exhibits and Financial Statement Schedules	113
Signatures		118
Exhibit Index		119

DEFINITIONS

The following are explanations of some of the terms used in this report.

ARO – Asset retirement obligations.

ASC – FASB Accounting Standards Codification.

ASU – Accounting Standards Update.

Bcf – Billion cubic feet of natural gas.

Bcfe – Billion cubic feet of natural gas equivalent. Determined using the ratio of one barrel of crude oil or NGLs to six Mcf of natural gas.

Bbl – Barrel, or 42 U.S. gallons liquid volume.

Boe – Barrel of oil equivalent. Determined using the ratio of six Mcf of natural gas to one barrel of crude oil or NGLs.

BOKF – Bank of Oklahoma Financial Corporation.

Btu – British thermal unit, used in terms of gas volumes. Btu is used to refer to the amount of natural gas required to raise the temperature of one pound of water by one degree Fahrenheit at one atmospheric pressure.

Development drilling – The drilling of a well within the proved area of an oil or gas reservoir to the depth of a stratigraphic horizon known to be productive.

DD&A – Depreciation, depletion, and amortization.

FASB – Financial and Accounting Standards Board.

Finding and development costs – Costs associated with acquiring and developing proved natural gas and oil reserves which are capitalized under generally accepted accounting principles, including any capitalized general and administrative expenses.

Gross acres or gross wells – The total acres or wells in which a working interest is owned.

IF – Inside FERC (U.S. Federal Energy Regulatory Commission).

LIBOR – London Interbank Offered Rate.

MBbls – Thousand barrels of crude oil or other liquid hydrocarbons.

Mcf – Thousand cubic feet of natural gas.

Mcfe – Thousand cubic feet of natural gas equivalent. Determined using the ratio of one barrel of crude oil or NGLs to six Mcf of natural gas.

MMBbls – Million barrels of crude oil or other liquid hydrocarbons.

MMBoe – Million barrels of oil equivalents.

MMBtu – Million Btu’s.

MMcf – Million cubic feet of natural gas.

MMcfe – Million cubic feet of natural gas equivalent. Determined using the ratio of one barrel of crude oil or NGLs to six Mcf of natural gas.

Net acres or net wells – The sum of the fractional working interests owned in gross acres or gross wells.

NGLs – Natural gas liquids.

NGPL-TXOK – Natural Gas Pipeline Co. of America/Texok zone.

NYMEX – The New York Mercantile Exchange.

OPIS – Oil Price Information Service.

PEPL – Panhandle East Pipeline Co.

Play – A term applied by geologists and geophysicists identifying an area with potential oil and gas reserves.

Producing property – A natural gas or oil property with existing production.

Proved developed reserves – Reserves that can be expected to be recovered through existing wells with existing equipment and operating methods or in which the cost of the required equipment is relatively minor compared to the cost of a new well; and through installed extraction equipment and infrastructure operational at the time of the reserves estimate . For additional information, see the SEC’s definition in Rule 4-10(a)(3) of Regulation S-X.

Proved reserves – Proved oil and gas reserves are those quantities of oil and gas, which, by analysis of geosciences and engineering data, can be estimated with reasonable certainty to be economically producible – from a given date forward, from known reservoirs and under existing economic conditions, operating methods, and government regulations – prior to the time at which contracts providing the right to operate expire, unless evidence indicates that renewal is reasonably certain, regardless of whether deterministic or probabilistic methods are used for the estimation. The project to extract the hydrocarbons must have commenced or the operator must be reasonably certain that it will commence the project within a reasonable time. For additional information, see the SEC’s definition in Rule 4-10(a)(2)(i) through (iii) of Regulation S-X.

Proved undeveloped reserves – Proved reserves that are expected to be recovered from new wells on undrilled acreage, or from existing wells where a relatively major expenditure is required for recompletion. For additional information, see the SEC’s definition in Rule 4-10(a)(4) of Regulation S-X.

Reasonable certainty (in regards to reserves) – If deterministic methods are used, reasonable certainty means a high degree of confidence that the quantities will be recovered. If probabilistic methods are used, there should be at least a 90% probability that the quantities actually recovered will equal or exceed the estimate.

Reliable technology – A grouping of one or more technologies (including computational methods) that has been field tested and has been demonstrated to provide reasonably certain results with consistency and repeatability in the formation being evaluated or in an analogous formation.

SARs – Stock appreciation rights.

Unconventional play – Plays targeting tight sand, carbonates, coal bed, or oil and gas shale reservoirs. The reservoirs tend to cover large areas and lack the readily apparent traps, seals, and discrete hydrocarbon-water boundaries that typically define conventional reservoirs. These reservoirs generally require horizontal wells and fracture stimulation treatments or other special recovery processes in order to produce economically.

Undeveloped acreage – Lease acreage on which wells have not been drilled or completed to a point that would permit the production of economic quantities of natural gas or oil regardless of whether the acreage contains proved reserves.

Well spacing – The regulation of the number and location of wells over an oil or gas reservoir, as a conservation measure. Well spacing is normally accomplished by order of the appropriate regulatory conservation commission.

Workovers – Operations on a producing well to restore or increase production.

WTI – West Texas Intermediate, the benchmark crude oil in the United States.

UNIT CORPORATION

Annual Report

For The Year Ended December 31, 2013

PART I

Item 1.     Business

Unless otherwise indicated or required by the context, the terms “Company”, “Unit”, “us”, “our”, “we”, and “its” refer to Unit Corporation and, as appropriate, one or more of Unit Corporation and its subsidiaries.

Our executive offices are at 7130 South Lewis, Suite 1000, Tulsa, Oklahoma 74136; our telephone number is (918) 493-7700.

Information regarding our annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K, and any amendments to these reports, will be made available in print, free of charge, to any shareholders who request them. They are also available on our internet website at www.unitcorp.com, as soon as reasonably practicable after we electronically file these reports with or furnish them to the Securities and Exchange Commission (SEC). Materials we file with the SEC may be read and copied at the SEC’s Public Reference Room at 100 F. Street, N.E. Room 1580, N.W., Washington, D.C. 20549. Information on the operation of the Public Reference Room may be obtained by calling the SEC at 1-800-SEC-0330. The SEC also maintains an Internet website at www.sec.gov that contains reports, proxy and information statements, and other information regarding our company that we file electronically with the SEC.

In addition, we post on our Internet website, www.unitcorp.com, copies of our corporate governance documents. Our corporate governance guidelines and code of ethics, and the charters of our Board’s Audit, Compensation, and Nominating and Governance Committees, are available free of charge on our website or in print to any shareholder who requests them. We may from time to time provide important disclosures to investors by posting them in the investor information section of our website, as allowed by SEC rules.

GENERAL

We were founded in 1963 as an oil and natural gas contract drilling company. Today, in addition to our drilling operations, we have operations in the exploration and production and mid-stream areas. We operate, manage, and analyze our results of operations through our three principal business segments:

• Oil and Natural Gas – carried out by our subsidiary Unit Petroleum Company. This segment explores, develops, acquires, and produces oil and natural gas properties for our own account.

• Contract Drilling – carried out by our subsidiary Unit Drilling Company and its subsidiaries. This segment contracts to drill onshore oil and natural gas wells for others, and for our own account.

• Mid-Stream – carried out by our subsidiary Superior Pipeline Company, L.L.C. and its subsidiaries. This segment buys, sells, gathers, processes, and treats natural gas for third parties and for our own account.

Each of these companies may conduct operations through subsidiaries of their own.

The following table provides certain information about us as of February 14, 2014:

Completed gross wells in which we own an interest	9,842
Number of drilling rigs we own	117
Number of natural gas treatment plants we own	3
Number of processing plants we own	15
Number of natural gas gathering systems we own	38

1

2013 SEGMENT OPERATIONS HIGHLIGHTS

Oil and Natural Gas

• Attained net proved oil, NGLs, and natural gas reserves of 159.9 million barrels of oil equivalents (MMBoe), a 7%increase over 2012 reserves.

• Increased net proved oil and NGLs reserves by 10%over2012.

• Total production of 16.7 MMBoe or an 18% increase over2012.

• Participated in the drilling of 149 wells.

• Sold non-core assets with proceeds of $78.8 million for the year.

Contract Drilling

• Sold five 2,000-3,000 horsepower electric drilling rigs to unaffiliated third-parties.

• Launched our new drilling program to design and build new proprietary 1,500 horsepower AC electric drilling rigs, called the BOSS drilling rig. The first BOSS drilling rig is expected to be completed and put into service for our oil and natural gas segment during the first quarter of 2014.

• Moved two rigs into the Permian Basin of West Texas.

Mid-Stream

• Gas gathered increased from 250,290 Mcf per day in 2012 to 309,554 Mcf per day in 2013, a 24%increase.

• Gas processed increased from 133,987 Mcf per day in 2012 to 140,584 Mcf per day in 2013, a 5%increase.

• Added 155 miles of pipeline (approximately a 12%increase) and connected 150 new wells to our various gathering systems.

• Completed construction of a new gathering and processing facility in south central Kansas, known as the Reno system, and the related installation of two gas processing plants which provide 25 MMcf per day total processing capacity.

• Completed the installation of a 30 MMcf per day plant at our Bellmon facility increasing our total processing capacity to 55 MMcf per day.

• Purchased a new 60 MMcf per day gas processing plant for our Bellmon system and began installation of this plant which was completed in February 2014.

• Completed the installation and upgrade of the Dove Creek processing plant at our Perkins facility increasing our processing capacity by 8 MMcf per day.

• Completed construction of a new gathering system in north-central Pennsylvania, known as the Brookfield system.

• Increased the contract mix as a percent of volume for fee-based contracts to 62% in 2013 from 39% in 2012.

FINANCIAL INFORMATION ABOUT SEGMENTS

See Note 17 of our Notes to Consolidated Financial Statements in Item 8 of this report for information with respect to each of our segment’s revenues, profits or losses, and total assets.

2

OIL AND NATURAL GAS

General.    We began to develop our exploration and production operations in 1979. Today, our wholly owned subsidiary, Unit Petroleum Company, conducts our exploration and production activities. Our producing oil and natural gas properties, unproved properties, and related assets are in the following locations:

Division	Location
West division	Western and Southern Texas, Colorado, Wyoming, Montana, North Dakota, New Mexico, Southern Louisiana, and Mississippi
East division	East Texas, Eastern Oklahoma, Pennsylvania, Arkansas, and Northern Louisiana
Central division	Western Oklahoma, Texas Panhandle and Kansas

When we are the operator of a property, we generally attempt to use a drilling rig owned by our contract drilling segment, and we use our mid-stream segment to gather our gas if it is economical for us to develop a system in the area.

The following table presents certain information regarding our oil and natural gas operations as of December 31, 2013:

Our Divisions/Area	Number of Gross Wells	Number of Net Wells	Number of Gross Wells in Process	Number of Net Wells in Process	2013 Average Net Daily Production
					Natural Gas (Mcf)	Oil (Bbls)	NGLs (Bbls)
West division	3,119	515.39	2	0.75	35,787	1,889	2,720
East division	1,484	475.59	5	0.03	25,755	45	66
Central division	5,238	1,840.83	14	9.63	93,956	7,273	7,937
Total	9,841	2,831.81	21	10.41	155,498	9,207	10,723

As of December 31, 2013, we did not have any significant water floods, pressure maintenance operations, or any other material operations that were in process.

Description and Location of Our Core Operations

West division.    In our Wilcox play, located primarily in Polk, Tyler, and Hardin Counties, Texas, we operated and completed eight gross wells in 2013 with an average working interest of 100% and a success rate of 88%. Five of the eight wells were completed in our “Gilly” Basal Wilcox field bringing the total number of wells completed in that field to ten at year end 2013. Production for 2013 increased 21% as compared to 2012. Our first horizontal Wilcox well was completed in the fourth quarter of 2013 at an initial daily rate of approximately 4.4 MMcf per day and 73 barrels of condensate per day from approximately 1,500 feet of Basal Wilcox lateral. There are currently two Unit rigs drilling in our Wilcox play with plans to add a third rig in the second half of the year, which should result in approximately 10 to 12 gross vertical wells and two to four horizontal wells at an approximate net cost of $112 million for 2014.

East division.    Over the last several years, activity in our East Division has been limited due to low gas prices since this area does not generally have oil or NGLs associated with the gas.

Central division.    In our Mississippian play in south central Kansas, the average daily production for 2013 increased approximately 218% as compared to 2012. We had first sales on eight Mississippian wells during 2013 with an average 30 day IP rate of 222 Boe per day consisting of an average of approximately 53% oil, 11% NGLs, and 36% natural gas with a 100% average working interest. The last four wells completed in the fourth quarter of 2013 had a significantly higher liquids cut consisting of approximately 79% oil, 6% NGLs, and 15% natural gas with an average 30 day IP rate of approximately 231 Boe per day. Two potential enhancements we may make to wells drilled in the play during 2014 are drilling extended lateral wells and testing different fracture stimulation designs. We have leased approximately 143,000 net acres in the play and are currently running two Unit drilling rigs and expect to spend approximately $111 million in 2014.

3

In the Marmaton horizontal oil play in Beaver County, Oklahoma, we had first sales on 41 horizontal wells during 2013 with an average 30 day IP rate of 371 Boe per day with an approximate average working interest of 75%. The average daily production for 2013 increased approximately 25% as compared to 2012. A decision from the Oklahoma Legislature to allow drilling extended lateral wells in the play is anticipated by May 2014. Two additional potential horizontal targets in the play are scheduled to be tested in 2014. We have leases on approximately 119,000 net acres and have two Unit rigs drilling in the play with current plans to spend approximately $70 million.

In the Texas Panhandle District, which consists primarily of Granite Wash (GW) wells and to a lesser degree Cleveland wells, the average daily production for 2013 increased approximately 28% over 2012. We had first sales on 23 horizontal GW wells, having an average peak 30 day IP rate of 5.2 MMcfe per day and an average working interest of 85%. We also had first sales on three Cleveland wells with an average peak 30 day rate of 3.9 MMcfe per day at an average working interest of 80%. We recently completed drilling operations on three separate well pads located in different sections of the Buffalo Wallow GW field. Each pad has three wells resulting in nine total wells that will target five different GW sand intervals. Six of the wells have been fracture stimulated and the remaining three wells are scheduled to be fracture stimulated in the first quarter 2014. We plan to monitor production from these three pads for approximately 90 days prior to resuming pad drilling in the field. We plan to run three to five drilling Unit rigs in the GW play and one Unit rig in the Cleveland play for 2014 with plans to spend approximately $174 million.

Dispositions and Acquisitions.    There were no material dispositions during 2011. In September 2012, we sold our interest in certain Bakken properties (located in North Dakota). The proceeds, net of related expenses, were $226.6 million. In addition, we sold certain oil and natural gas assets located in Brazos and Madison Counties,Texas, for approximately $44.1 million. In August 2013, we sold additional Bakken property interests. The proceeds, net of related expenses, were $57.1 million. In addition, we had other non-core asset sales with proceeds, net of related expenses, of $21.7 million for 2013. Proceeds from these dispositions reduced the net book value of the full cost pool with no gain or loss recognized.

On July 20, 2011, we acquired certain producing properties from an unaffiliated seller for approximately $12.3 million in cash, after post-closing adjustments, consisting of 30 operated wells and 59 non-operated well interests located in Beaver, Harper, and Ellis Counties, Oklahoma and Lipscomb County, Texas. The purchase price allocation was $8.4 million for proved properties and $3.9 million for acreage. The acquisition also included in excess of 12,000 net acres held by production available for future development.

On August 31, 2011, we acquired certain producing oil and gas properties for $30.5 million in cash from an unaffiliated seller. Included in the acquisition were more than 500 wells located principally in the Oklahoma Arkoma Woodford and Hartshorne Coal plays along with other properties located throughout Oklahoma and Texas. The acquisition also included approximately 55,000 net acres of which 96% was held by production.

On September 17, 2012, we acquired certain oil and natural gas assets from Noble. After final closing adjustments, the acquisition included approximately 83,000 net acres primarily in the Granite Wash, Cleveland, and various other plays in western Oklahoma and the Texas Panhandle. The adjusted amount paid was $592.6 million.

As of the effective date of the Noble acquisition (April 1, 2012), the estimated proved reserves of the acquired properties were 44 MMBoe, The acquisition added approximately 24,000 net leasehold acres to our Granite Wash core area in the Texas Panhandle with significant potential including approximately 600 possible future horizontal drilling locations. The total acreage acquired in other plays in western Oklahoma and the Texas Panhandle was approximately 59,000 net acres and was characterized by high working interest and operatorship, 95% of which was held by production. We also received four gathering systems as part of the transaction, as well as other miscellaneous assets.

4

Well and Leasehold Data.    The following tables identify certain information regarding our oil and natural gas exploratory and development drilling operations:

	Year Ended December 31,
	2013		2012		2011
	Gross	Net	Gross	Net	Gross	Net
Wells drilled:
Exploratory:
Oil:
West division	—	—	1	1.00	—	—
East division	—	—	—	—	—	—
Central division	—	—	1	1.00	—	—
Total oil	—	—	2	2.00	—	—
Natural gas:
West division	2	2.00	3	2.49	5	4.13
East division	—	—	—	—	—	—
Central division	—	—	—	—	—	—
Total natural gas	2	2.00	3	2.49	5	4.13
Dry:
West division	—	—	1	1.00	7	6.50
East division	—	—	—	—	—	—
Central division	—	—	—	—	—	—
Total dry	—	—	1	1.00	7	6.50
Total exploratory	2	2.00	6	5.49	12	10.63
Development:
Oil:
West division	1	0.08	29	4.10	21	4.57
East division	—	—	—	—	—	—
Central division	93	51.33	71	34.04	56	32.81
Total oil	94	51.41	100	38.14	77	37.38
Natural gas:
West division	9	8.60	7	4.44	9	6.26
East division	1	—	2	0.76	9	4.65
Central division	37	26.00	55	30.45	44	18.32
Total natural gas	47	34.60	64	35.65	62	29.23
Dry:
West division	3	1.35	1	0.80	3	2.03
East division	—	—	—	—	1	1.00
Central division	3	1.78	—	—	5	2.15
Total dry	6	3.13	1	0.80	9	5.18
Total development	147	89.14	165	74.59	148	71.79
Total wells drilled	149	91.14	171	80.08	160	82.42

5

	Year Ended December 31,
	2013		2012		2011
	Gross	Net	Gross	Net	Gross	Net
Wells producing or capable of producing:
Oil:
West division	2,058	170.49	2,076	178.43	2,074	183.50
East division	42	1.91	54	3.17	54	3.17
Central division	891	426.75	807	382.34	631	273.31
Total oil	2,991	599.15	2,937	563.94	2,759	459.98
Natural gas:
West division	1,004	326.79	1,109	330.19	1,182	335.90
East division	1,435	472.68	1,632	519.62	1,636	522.15
Central division	4,266	1,382.62	4,245	1,362.87	3,097	683.08
Total natural gas	6,705	2,182.09	6,986	2,212.68	5,915	1,541.13
Total	9,696	2,781.24	9,923	2,776.62	8,674	2,001.11

As of February 14, 2014, we are currently drilling or participating in 13 gross (9.66 net) wells started during 2014.

Cost incurred for development drilling includes $136.7 million, $123.4 million, and $111.4 million in 2013, 2012, and 2011, respectively, to develop booked proved undeveloped oil and natural gas reserves.

The following table summarizes our leasehold acreage at December 31, 2013:

	Year Ended December 31, 2013
	Developed		Undeveloped		Total
	Gross	Net	Gross	Net (1)	Gross	Net
West division	282,448	94,918	166,432	112,403	448,880	207,321
East division	225,054	87,908	57,707	17,811	282,761	105,719
Central division	857,022	334,472	300,560	236,567	1,157,582	571,039
Total	1,364,524	517,298	524,699	366,781	1,889,223	884,079

_________________________ 

(1) Approximately 90% (West – 83%; East – 48%; and Central – 97%) of the net undeveloped acres are covered by leases that will expire in the years 2014—2016 unless drilling or production extends the terms of those leases. Currently, we do not have any material proved undeveloped (PUD) reserves attributable to acreage where the expiration date precedes the scheduled PUD reserve development plan.

6

Price and Production Data.    The following tables identify the average sales price, production volumes, and average production cost per equivalent barrel for our oil, NGLs, and natural gas production for the years indicated:

	Year Ended December 31,
	2013			2012		2011
Average sales price per barrel of oil produced:
Price before hedging	$	95.18		$	90.19	$	93.49
Effect of hedging	(0.12		)	2.41		(6.31		)
Price including hedging	$	95.06		$	92.60	$	87.18
Average sales price per barrel of NGLs produced:
Price before hedging	$	31.79		$	30.70	$	44.44
Effect of hedging	—			0.88		(0.80		)
Price including hedging	$	31.79		$	31.58	$	43.64
Average sales price per Mcf of natural gas produced:
Price before hedging	$	3.33		$	2.53	$	3.78
Effect of hedging	(0.01		)	0.84		0.48
Price including hedging	$	3.32		$	3.37	$	4.26

7

	Year Ended December 31,
	2013		2012		2011
Oil production (MBbls):
West division	690		1,071		893
East division	16		16		12
Central division:
Mendota field	412		497		262
All other central division fields	2,242		1,695		1,344
Total central division	2,654		2,192		1,606
Total oil production (MBbls)	3,360		3,279		2,511
NGLs production (MBbls):
West division	993		858		798
East division	24		23		5
Central division:
Mendota field	1,050		1,128		691
All other central division fields	1,847		787		745
Total central division	2,897		1,915		1,436
Total NGLs production (MBbls)	3,914		2,796		2,239
Natural gas production (MMcf):
West division	13,062		11,831		11,774
East division	9,401		11,906		12,768
Central division:
Mendota field	9,138		8,957		4,887
All other central division fields	25,156		16,236		14,675
Total central division	34,294		25,193		19,562
Total natural gas production (MMcf)	56,757		48,930		44,104
Total production (MBoe):
West division	3,860		3,901		3,653
East division	1,607		2,023		2,145
Central division:
Mendota field	2,985		3,118		1,768
All other central division fields	8,282		5,188		4,535
Total central division	11,267		8,306		6,303
Total production (MBoe)	16,734		14,230		12,101
Average production cost per equivalent Bbl (1)	$	7.63	$	7.00	$	6.90

_______________________ 

(1) Excludes ad valorem taxes and gross production taxes.

Our Mendota field, located in the Granite Wash play, includes 18%, 19%, and 22%, respectively of our total proved reserves in 2013, 2012, and 2011, respectively, expressed on an oil equivalent barrels basis, and is the only field that is greater than 15% of our proved reserves.

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Oil, NGLs, and Natural Gas Reserves.    The following table identifies our estimated proved developed and undeveloped oil, NGLs, and natural gas reserves:

	Oil (MBbls)	NGLs (MBbls)	Natural Gas (MMcf)	Total Proved Reserves (MBoe)
Proved developed:
West division	3,244	5,981	79,760	22,518
East division	38	28	97,891	16,381
Central division	12,312	24,428	286,583	84,504
Total proved developed	15,594	30,437	464,234	123,403
Proved undeveloped:
West division	325	599	8,121	2,278
East division	—	—	9,428	1,571
Central division	5,846	10,169	100,001	32,682
Total proved undeveloped	6,171	10,768	117,550	36,531
Total proved	21,765	41,205	581,784	159,934

Oil, NGLs, and natural gas reserves cannot be measured exactly. Estimates of oil, NGLs, and natural gas reserves require extensive judgments of reservoir engineering data and are generally less precise than other estimates made in connection with financial disclosures. We use Ryder Scott Company L.P. (Ryder Scott), independent petroleum consultants, to audit the reserves prepared by our reservoir engineers. Ryder Scott has been providing petroleum consulting services throughout the world for over seventy years. Their summary report is attached as Exhibit 99.1 to this Form 10-K. The wells or locations for which reserve estimates were audited were taken from reserve and income projections prepared by us as of December 31, 2013 and comprised 84% of the total proved developed discounted future net income and 91% of the total proved undeveloped discounted future net income (based on the unescalated pricing policy of the SEC).

Our Reservoir Engineering department is responsible for reserve determination for the wells in which we have an interest. Their primary objective is to estimate the wells' future reserves and future net value to us. Data is incorporated from multiple sources including geological, production engineering, marketing, production, land, and accounting departments. The engineers are responsible for reviewing this information for accuracy as it is incorporated into the reservoir engineering database. Our internal audit group reviews the controls to help provide assurance all the data has been provided. New well reserve estimates are provided to management as well as the respective operational divisions for additional scrutiny. Major reserve changes on existing wells are reviewed on a regular basis with the operational divisions to confirm correctness and accuracy. As the external audit is being completed by Ryder Scott, the reservoir department performs a final review of all properties for accuracy of forecasting.

Technical Qualifications

Ryder Scott – Mr. Fred P. Richoux is the primary technical person in charge on behalf of Ryder Scott for their audit of our reserves.

Mr. Richoux, an employee of Ryder Scott since 1978, is the President and member of the Board of Directors at Ryder Scott. He is responsible for coordinating and supervising staff and consulting engineers of the company in ongoing reservoir evaluation studies worldwide as well as other administrative functions at the Company. Before joining Ryder Scott, Mr. Richoux served in a number of engineering positions with Phillips Petroleum Company.

Mr. Richoux earned a Bachelor of Science degree in Electrical Engineering from the University of Louisiana at Lafayette and is a registered Professional Engineer in the State of Texas and the Province of Alberta. He is also a member of the Society of Petroleum Engineers and the Society of Petroleum Evaluation Engineers.

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In addition to gaining experience and competency through prior work experience, the Texas Board of Professional Engineers requires a minimum of fifteen hours of continuing education annually, including at least one hour in the area of professional ethics, which Mr. Richoux fulfills.

Based on his educational background, professional training and more than 45 years of practical experience in the estimation and evaluation of petroleum reserves, Mr. Richoux has attained the professional qualifications as a Reserves Estimator (requires appropriate degree and/or is registered as Professional Engineer and has a minimum of 3 years experience in the estimation and evaluation of reserves) and Reserves Auditor (requires appropriate degree and/or is registered as Professional Engineer and has a minimum of 10 years experience in the estimation and evaluation of reserves of which at least 5 years of such experience is being in responsible charge of the estimation and evaluation of reserves) set forth in Article III of the “Standards Pertaining to the Estimating and Auditing of Oil and Gas Reserves Information” promulgated by the Society of Petroleum Engineers as of February 19, 2007. For more information regarding Mr. Richoux’s geographic and job specific experience, please refer to the Ryder Scott Company website at http://www.ryderscott.com/Experience/Employees.

The Company – Responsibility for overseeing the preparation of our reserve report is shared by our reservoir engineers Trenton Mitchell and Robert Lyon.

Mr. Mitchell earned a Bachelor of Science degree in Petroleum Engineering from Texas A&M University in 1994. He has been an employee of Unit since 2002. Initially, he was the Outside Operated Engineer and since 2003 he has served in the capacity of Reservoir Engineer and in 2010 he was promoted to Manager of Reservoir Engineering. Before joining Unit, he served in a number of engineering field and technical support positions with Schlumberger Well Services in their pumping services segment (formerly Dowell Schlumberger). He obtained his Professional Engineer registration from the State of Oklahoma in 2004 and has been a member of Society of Petroleum Engineers (SPE) since 1991.

Mr. Lyon received a Bachelor of Science degree in Petroleum Engineering from the University of Tulsa in 1972 and has spent 34 of his 41 years in the industry directly involved in reserve calculation work. Included in this time were 15 years working for petroleum consulting firms Raymond F. Kravis and Associates and Southmayd and Associates performing independent reserve appraisals and audits for corporations and individuals. He joined Unit in 1996 and has shared responsibility for preparation of the company’s reserve report since that time. Mr. Lyon is a registered professional engineer in the State of Oklahoma and a member of the SPE.

As part of the continuing education requirement for maintaining their professional licenses Mr. Mitchell and Mr. Lyon have attended various seminars and forums to enhance their understanding of current standards and issues for reserves presentation. These forums have included those sponsored by various professional societies and professional service firms including Ryder Scott.

Definitions and Other.    Proved oil, NGLs, and natural gas reserves, as defined in SEC Rule 4-10(a), are those quantities of oil and gas, which, by analysis of geoscience and engineering data, can be estimated with reasonable certainty to be economically producible – from a given date forward, from known reservoirs and under existing economic conditions, operating methods and government regulations – before the time the contracts providing the right to operate expire, unless evidence indicates that renewal is reasonably certain, regardless of whether deterministic or probabilistic methods are used for estimation. The project to extract the hydrocarbons must have commenced or the operator must be reasonably certain that it will commence the project within a reasonable time.

The area of the reservoir considered as proved includes:

• The area identified by drilling and limited by fluid contacts, if any, and

• Adjacent undrilled portions of the reservoir that can, with reasonable certainty, be judged to be continuous with it and to contain economically producible oil or gas on the basis of available geosciences and engineering data.

In the absence of data on fluid contacts, proved quantities in a reservoir are limited by the lowest known hydrocarbons as seen in a well penetration unless geosciences, engineering or performance data and reliable technology establishes a lower contact with reasonable certainty.

Where direct observation from well penetrations has defined a highest known oil elevation and the potential exists for an associated gas cap, proved oil reserves may be assigned in the structurally higher portions of the reservoir only if geosciences, engineering or performance data and reliable technology establish the higher contact with reasonable certainty.

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Reserves which can be produced economically through application of improved recovery techniques (including, but not limited to, fluid injection) are included in the proved classification when:

• Successful testing by a pilot project in an area of the reservoir with properties no more favorable than in the reservoir as a whole;

• The operation of an installed program in the reservoir or other evidence using reliable technology establishes reasonable certainty of the engineering analysis on which the project or program was based; and

• The project has been approved for development by all necessary parties and entities, including governmental entities.

Existing economic conditions include prices and costs at which economic producibility from a reservoir is to be determined. The price is the average price during the 12-month period before the ending date of the period covered by the report, determined as an unweighted arithmetic average of the first day of month price for each month within the period, unless prices are defined by contractual arrangements, excluding escalations based on future conditions.

Proved undeveloped oil, NGLs, and natural gas reserves are proved reserves that are expected to be recovered from new wells on undrilled acreage, or from existing wells where a relatively major expenditure is required for completion. Reserves on undrilled acreage are limited to those directly offsetting development spacing areas that are reasonably certain of production when drilled, unless evidence using reliable technology exists that establishes reasonable certainty of economic producibility at greater distances. Undrilled locations can be classified as having undeveloped reserves only if a development plan has been adopted indicating that they are scheduled to be drilled within five years, unless the specific circumstances, justify a longer time. Under no circumstances can estimates for proved undeveloped reserves be attributable to any acreage for which an application of fluid injection or other improved recovery technique is contemplated, unless such techniques have been proved effective by actual projects in the same reservoir or an analogous reservoir, or by other evidence using reliable technology establishing reasonable certainty.

Proved Undeveloped Reserves.    As of December 31, 2013, we had approximately 180 gross proved undeveloped wells all of which we plan to develop within five years of initial disclosure at a net estimated cost of approximately $508.3 million. The future estimated development costs necessary to develop our proved undeveloped oil and natural gas reserves in the United States for the years 2014—2017, as disclosed in our December 31, 2013 oil and natural gas reserve report, are $238.3 million, $185.4 million, $25.1 million, and $59.5 million, respectively. Our proved undeveloped reserves reported at December 31, 2013 did not include reserves that we did not expect to develop within five years of initial disclosure of those reserves. During 2013, we added new PUD reserves through extensions and discoveries representing 4.1 MMBls of oil, 5.0 MMBls of NGLs, and 52.7 Bcf of natural gas. We converted 47 proved undeveloped wells into proved developed wells at a cost of approximately $136.7 million. The proved undeveloped reserves that were converted to proved developed reserves during 2013, represented 1.8 MMBls of oil, 2.6 MMBls of NGLs, and 21.6 Bcf of natural gas. There were no other material changes to the PUD reserves.

Our estimated proved reserves and the standardized measure of discounted future net cash flows of the proved reserves at December 31, 2013, 2012, and 2011, the changes in quantities, and standardized measure of those reserves for the three years then ended, are shown in the Supplemental Oil and Gas Disclosures included in Item 8 of this report.

Contracts.    Our oil production is sold at or near our wells under purchase contracts at prevailing prices in accordance with arrangements customary in the oil industry. Our natural gas production is sold to intrastate and interstate pipelines as well as to independent marketing firms under contracts with terms generally ranging from one month to a year. Few of these contracts contain provisions for readjustment of price as most of them are market sensitive.

Customers.    During 2013, sales to Valero Energy Corporation accounted for 25% of our oil and natural gas revenues. There was no other company that accounted for more than 10% of our oil and natural gas revenues. During 2013, our mid-stream segment purchased $83.0 million of our natural gas and NGLs production and provided gathering and transportation services of $8.0 million. Intercompany revenue from services and purchases of production between our mid-stream segment and our oil and natural gas segment has been eliminated in our consolidated financial statements. In 2012 and 2011, we eliminated intercompany revenues of $73.3 million and $76.1 million, respectively, attributable to the intercompany purchase of our production of natural gas and NGLs as well as gathering and transportation services.

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CONTRACT DRILLING

General.    Our contract drilling business is conducted through Unit Drilling Company and its subsidiary Unit Texas Drilling L.L.C. Through these companies we drill onshore oil and natural gas wells for our own account as well as other oil and natural gas companies. Our drilling operations are located in Oklahoma, Texas, Louisiana, Kansas, Wyoming, Colorado, Utah, Montana, and North Dakota.

The following table identifies certain information concerning our contract drilling operations:

	Year Ended December 31,
	2013			2012			2011
Number of drilling rigs owned at year end	121.0			127.0			127.0
Average number of drilling rigs owned during year	125.4			127.4			123.7
Average number of drilling rigs utilized	65.0			73.9			76.1
Utilization rate (1)	52		%	58		%	61		%
Average revenue per day (2)	$	17,486		$	19,774		$	17,520
Total footage drilled (feet in 1,000’s)	10,578			10,551			9,749
Number of wells drilled	793			773			742

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(1) Utilization rate is determined by dividing the average number of drilling rigs used by the average number of drilling rigs owned during the year.

(2) Represents the total revenues minus rental revenue from our contract drilling operations divided by the total number of days our drilling rigs were used minus the rental days during the year.

Description and Location of Our Drilling Rigs.    An on-shore drilling rig is composed of major equipment components like engines, drawworks or hoists, derrick or mast, substructure, pumps to circulate the drilling fluid, blowout preventers, and drill pipe. As a result of the normal wear and tear from operating 24 hours a day, several of the major components, like engines, mud pumps, and drill pipe, must be replaced or rebuilt on a periodic basis. Other major components, like the substructure, mast, and drawworks, can be used for extended periods of time with proper maintenance. We also own additional equipment used in the operation of our drilling rigs, including top drives, skidding systems, large air compressors, trucks, and other support equipment.

The maximum depth capacities of our various drilling rigs range from 5,000 to 40,000 feet. In 2013, 78 of our 121 drilling rigs were used in drilling services.

The following table shows certain information about our drilling rigs (including their distribution) as of February 14, 2014:

Divisions	Contracted Rigs	Non-Contracted Rigs	Total Rigs	Average Rated Drilling Depth (ft)
Mid-Continent	23	6	29	17,879
Woodward	12	4	16	13,719
Panhandle	9	17	26	12,885
Gulf Coast	8	6	14	17,929
Rocky Mountain	15	17	32	17,188
Totals	67	50	117	16,017

Drilling rig utilization steadily increased throughout 2011 and through the first quarter of 2012. It began declining from the second quarter of 2012 and throughout the remainder of 2012 with utilization remaining relatively flat throughout 2013. Factors contributing to the fluctuating utilization include drilling efficiencies attained by operators, more acreage in certain

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plays being held by production, and weakness in commodity prices. Our active drilling rig count at the start of 2011 was 72 drilling rigs. It decreased to 62 rigs at the end of 2012 and finished out 2013 at 65.

Mid-Continent, Woodward, and Panhandle – We have long held a strong position and market presence in the mid-continent area of Oklahoma and the Texas Panhandle. This area is commonly referred to as the Anadarko Basin, which also encompasses portions of Kansas. Historically, the Anadarko Basin has been known as a gas producing area, but it is also rich in oil and NGL production. During the last several years operators have focused their operations in this basin on the Cana Woodford, Granite Wash, Marmaton, and Mississippian horizontal plays. Three of our divisions work in this basin. During 2013, our Mid-Continent, Panhandle, and Woodward divisions averaged 22.0, 9.5, and 10.3 drilling rigs operating, respectively.

Gulf Coast – Our Gulf Coast division provides drilling rigs to the onshore areas of Louisiana, Texas Gulf Coast, East Texas, South Texas. Recently two drilling rigs were moved into the Permian Basin of West Texas. During 2013, this division averaged 6.7 drilling rigs operating. Within this division, our largest drilling rig, Rig 201, a 4,000 horsepower rig rated to drill to 40,000 feet, drilled an ultra-deep exploration well for a major oil company in south Louisiana, establishing the record for the deepest onshore well in the state of Louisiana. 

Rocky Mountains – Our Rocky Mountain division covers several states, including Colorado, Utah, Wyoming, Montana, and North Dakota. This vast area has produced a number of conventional and unconventional oil and gas fields. This division operated an average of 16.5 drilling rigs during 2013. We had six drilling rigs operating in the Pinedale Anticline of western Wyoming and ten drilling rigs operating in the Bakken Shale of North Dakota at the end of 2013.

At any given time the number of drilling rigs we can work depends on a number of conditions besides demand, including the availability of qualified labor and the availability of needed drilling supplies and equipment. The impact of these conditions tends to increase with increased demand for our drilling rigs. Our average utilization rate for 2011, 2012, and 2013 was 61%, 58%, and 52%, respectively.

The following table shows the average number of our drilling rigs working by quarter for the years indicated:

	2013	2012	2011
First quarter	66.3	81.5	70.0
Second quarter	65.2	76.7	73.1
Third quarter	63.5	73.4	78.9
Fourth quarter	65.0	64.0	82.1

Drilling Rig Fleet.    The following table summarizes the changes made to our drilling rig fleet in 2013. A more complete discussion of the changes follows the table:

Drilling rigs owned at December 31, 2012	127
Drilling rigs sold	(5	)
Drilling rigs removed from service	(1	)
Drilling rigs purchased	—
Drilling rigs constructed	—
Total drilling rigs owned at December 31, 2013	121

Dispositions, Acquisitions, and Construction.   During 2011, we were awarded two new build drilling rig contracts for 1,500 horsepower, diesel-electric drilling rigs. One was placed into service during the fourth quarter of 2011 and the other was placed in service during the first quarter of 2012, both in Wyoming.

During the first quarter of 2012, we sold an idle 600 horsepower mechanical drilling rig to an unaffiliated third-party. In the second quarter we placed a new 1,500 horsepower, diesel-electric drilling rig to work in North Dakota under a three year contract.

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During the third quarter of 2012, we had a fire on one of our drilling rigs located in the mid-continent region. The net book value of the damaged equipment was $3.2 million. All of the net book value of the damaged equipment was recovered from insurance proceeds. No personnel were injured in this incident.

In the second quarter of 2013, we sold one of our 2,000 horsepower electric drilling rigs. During the third and fourth quarters of 2013, we sold three additional 2,000 horsepower and one 3,000 horsepower electric drilling rigs. All of these sales were to unaffiliated third-parties. Four additional idle 3,000 horsepower drilling rigs were sold to an unaffiliated third party in the first quarter of 2014 all of which were classified as assets held for sale at December 31, 2013. The proceeds from these various sales will be used in our new drilling rig program we launched to design and build a new proprietary 1,500 horsepower, AC electric drilling rig, called the BOSS rig. We anticipate the BOSS drilling rig will position us to more effectively meet the demands of our existing customers as well as allowing us to compete for the work of new customers.

The first BOSS drilling rig will be operational the first quarter of 2014 and will work initially for our oil and natural gas segment. Two additional BOSS drilling rigs are contracted to third party operators and are anticipated to be placed into service in the second and third quarters of 2014.

Drilling Contracts.    Our drilling contracts are generally obtained through competitive bidding on a well by well basis. Contract terms and payment rates vary depending on the type of contract used, the duration of the work, the equipment and services supplied, and other matters. We pay certain operating expenses, including the wages of our drilling rig personnel, maintenance expenses, and incidental drilling rig supplies and equipment. The contracts are usually subject to early termination by the customer subject to the payment of a fee. Our contracts also contain provisions regarding indemnification against certain types of claims involving injury to persons, property, and for acts of pollution. The specific terms of these indemnifications are subject to negotiation on a contract by contract basis.

The type of contract used determines our compensation. Contracts are generally one of three types: daywork; footage; or turnkey. Additional compensation may be acquired for special risks and unusual conditions. Under a daywork contract, we provide the drilling rig with the required personnel and the operator supervises the drilling of the well. Our compensation is based on a negotiated rate to be paid for each day the drilling rig is used. Footage contracts usually require us to bear some of the drilling costs in addition to providing the drilling rig. We are paid on completion of the well at a negotiated rate for each foot drilled. We did not have any footage or turnkey contracts in 2013, 2012, or 2011.

Under turnkey contracts we drill the well to a specified depth for a set amount and provide most of the required equipment and services. We bear the risk of drilling the well to the contract depth and are paid when the contract provisions are completed. We may incur losses if we underestimate the costs to drill the well or if unforeseen events occur that increase our costs or result in the loss of the well. All of our work during the last three years was under daywork contracts. Because market demand for our drilling rigs as well as the desires of our customers determine the types of contracts we use, we cannot predict when and if a part of our drilling will be conducted under footage or turnkey contracts.

The majority of our contracts are on a well-to-well basis, with the rest under term contracts. Term contracts range from six months to three years and the rates can either be fixed throughout the term or allow for periodic adjustments.

Customers.    During 2013, QEP Resources, Inc. and Kodiak Oil and Gas Corp. were our largest drilling customers accounting for approximately 18% and 10%, respectively, of our total contract drilling revenues. Our work for these customers was under multiple contracts and our business was not substantially dependent on any of these individual contracts. Consequently, none of these individual contracts were considered to be material. No other third party customer accounted for 10% or more of our contract drilling revenues.

Our contract drilling segment also provides drilling services for our oil and natural gas segment. During 2013, 2012, and 2011, our contract drilling segment drilled 105, 78, and 81 wells, respectively, or 13%, 10%, and 11%, respectively, of the total wells drilled for our oil and natural gas segment. Depending on the timing of the drilling services performed on our properties those services may be deemed, for financial reporting purposes, to be associated with the acquisition of an ownership interest in the property. Revenues and expenses for these services are eliminated in our income statement, with any profit recognized reducing our investment in our oil and natural gas properties. The contracts for these services are issued under the similar terms and rates as the contracts entered into with unrelated third parties. By providing drilling services for the oil and natural gas segment, we eliminated revenue of $64.3 million, $49.6 million, and $52.2 million during 2013, 2012, and 2011, respectively, from our contract drilling segment and eliminated the associated operating expense of $46.9 million, $34.1 million, and $32.6

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million during 2013, 2012, and 2011, respectively, yielding $17.4 million, $15.5 million, and $19.6 million during 2013, 2012, and 2011, respectively, as a reduction to the carrying value of our oil and natural gas properties.

MID-STREAM

General.    Our mid-stream operations are conducted through Superior Pipeline Company L.L.C. and its subsidiaries. Its operations consist of buying, selling, gathering, processing, and treating natural gas. It operates three natural gas treatment plants, 15 processing plants, 38 active gathering systems, and approximately 1,500 miles of pipeline. Superior and its subsidiaries operate in Oklahoma, Texas, Kansas, Pennsylvania, and West Virginia.

The following table presents certain information regarding our mid-stream segment for the years indicated:

	Year Ended December 31,
	2013	2012	2011
Gas gathered—Mcf/day	309,554	250,290	188,569
Gas processed—Mcf/day	140,584	133,987	92,940
NGLs sold—gallons/day	543,602	542,578	412,064

Dispositions and Acquisitions.    This segment did not have any significant dispositions or acquisitions during 2011 or 2013.

Included within the previously discussed acquisition of certain oil and natural gas assets from Noble were four gathering systems. These systems were transferred into our mid-stream segment. The cost for the systems was $18.7 million. Subsequently in 2013, one of these gathering systems was transferred to our oil and natural gas segment.

In December 2012, our mid-stream segment had a $1.2 million write down of its Erick system in conjunction with the shut down of this system.

Contracts.    Our mid-stream segment provides its customers with a full range of gathering, processing, and treating services. These services are usually provided to each customer under long-term contracts (more than one year), but we do have some short-term contracts as well. Our customer agreements include the following types of contracts:

• Fee-Based Contracts.    These contracts provide for a set fee for gathering and transporting raw natural gas. Our mid-stream’s revenue is a function of the volume of natural gas that is gathered or transported and is not directly dependent on the value of the natural gas. For the year ended December 31, 2013, 62% of our mid-stream segment’s total volumes and 37% of its operating margins (as defined below) were under fee-based contracts.

• Percent of Proceeds Contracts (POP).    These contracts provide for our mid-stream segment to retain a negotiated percentage of the sale proceeds from residue natural gas and NGLs it gathers and processes, with the remainder being paid to the producer. In this arrangement, Superior and the producer each own a portion of the commodity and are directly dependent on the volume and value of the commodity both of which fluctuate. For the year ended December 31, 2013, 36% of our mid-stream segment’s total volumes and 59% of operating margins (as defined below) were under POP contracts.

• Percent of Index Contracts (POI).    Under these contracts our mid-stream segment, as the processor, purchases raw well-head natural gas from the producer at a stipulated index price and, after processing the natural gas, sells the processed residual gas and the produced NGLs to third parties. Our mid-stream segment is subject to the economic risk (processing margin risk) that the aggregate proceeds from the sale of the processed natural gas and the NGLs could be less than the amount paid for the unprocessed natural gas. For the year ended December 31, 2013, 2% of our mid-stream segment’s total volumes and 4% of operating margins (as defined below) were under POI contracts.

For each of the above contracts, operating margin is defined as total operating revenues less operating expenses and does not include depreciation and amortization, general and administrative expenses, interest expense, or income taxes.

Customers.    During 2013, ONEOK, Inc. and Tenaska Resources, LLC accounted for approximately 50% and 16%, respectively, of our mid-stream revenues. We believe that if we lost one or both of these identified customers, there are other

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customers available to purchase our gas and NGLs. During 2013, 2012, and 2011 this segment purchased $83.0 million, $68.2 million, and $71.5 million, respectively, of our oil and natural gas segment's natural gas and NGLs production, and provided gathering and transportation services of $8.0 million, $5.1 million, and $4.6 million, respectively. Intercompany revenue from services and purchases of production between this business segment and our oil and natural gas segment has been eliminated in our consolidated financial statements.

VOLATILE NATURE OF OUR BUSINESS

The prevailing prices for oil, NGLs, and natural gas significantly affect our revenues, operating results, cash flow as well as our ability to grow our operations. Historically, oil, NGLs, and natural gas prices have been volatile and we expect them to continue to be so. For each of the periods indicated, the following table shows the highest and lowest average prices our oil and natural gas segment received for its sales of oil, NGLs, and natural gas without taking into account the effect of our hedging activity:

	Oil Price per Bbl				NGLs Price per Bbl				Natural Gas Price per Mcf
Quarter	High		Low		High		Low		High		Low
2013
Fourth	$	97.34	$	91.15	$	36.33	$	31.92	$	3.36	$	3.08
Third	$	104.25	$	101.70	$	33.14	$	24.78	$	3.33	$	2.79
Second	$	92.85	$	89.97	$	32.17	$	28.94	$	4.04	$	3.73
First	$	93.89	$	90.80	$	37.97	$	33.14	$	3.20	$	3.04
2012
Fourth	$	87.01	$	84.39	$	34.82	$	32.42	$	3.57	$	2.54
Third	$	90.04	$	82.69	$	24.07	$	18.02	$	2.78	$	2.19
Second	$	100.63	$	76.35	$	34.65	$	24.65	$	2.34	$	1.65
First	$	104.32	$	97.31	$	39.77	$	36.04	$	2.80	$	2.17
2011
Fourth	$	97.26	$	86.63	$	46.16	$	40.57	$	3.46	$	3.16
Third	$	96.90	$	85.68	$	47.08	$	45.44	$	4.30	$	3.68
Second	$	107.87	$	95.78	$	49.43	$	44.60	$	4.04	$	3.83
First	$	99.77	$	86.14	$	41.66	$	38.35	$	4.11	$	3.53

Prices for oil, NGLs, and natural gas are subject to wide fluctuations in response to relatively minor changes in the actual or perceived supply of and demand for oil and natural gas, market uncertainty, and a variety of additional factors that are beyond our control, including:

• political conditions in oil producing regions;

• the ability of the members of the Organization of Petroleum Exporting Countries to agree on prices and their ability to maintain production quotas;

• actions taken by foreign oil and natural gas producing nations;

• the price of foreign oil imports;

• imports and exports of liquefied natural gas;

• actions of governmental authorities;

• the domestic and foreign supply of oil, NGLs, and natural gas;

• the level of consumer demand;

• United States storage levels of natural gas;

• weather conditions;

• domestic and foreign government regulations;

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• the price, availability, and acceptance of alternative fuels;

• volatility in ethane prices causing rejection of ethane as part of the liquids processed stream; and

• worldwide economic conditions.

These factors and the volatile nature of the energy markets make it impossible to predict with any certainty the future prices of oil, NGLs, and natural gas. You are encouraged to read the Risk Factors discussed in Item 1A of this report for additional risks that can impact our operations.

Our contract drilling operations are dependent on the level of demand in our operating markets. Both short-term and long-term trends in oil, NGLs, and natural gas prices affect demand. Because oil, NGLs, and natural gas prices are volatile, the level of demand for our services can also be volatile.

Our mid-stream operations provide us greater flexibility in delivering our (and other parties) natural gas and NGLs from the wellhead to major natural gas and NGLs pipelines. Margins received for the delivery of these natural gas and NGLs are dependent on the price for oil, NGLs, and natural gasand the demand for natural gas and NGLs in our area of operations. If the price of NGLs falls without a corresponding decrease in the cost of natural gas, it may become uneconomical to us to extract certain NGLs. The volumes of natural gas and NGLs processed are highly dependent on the volume and Btu content of the natural gas and NGLs gathered.

It is possible that the current industry shift in drilling for oil and NGLs may at some point impact future natural gas availability as well as prices for natural gas. In addition, the increasing availability of oil and NGLs may impact the price for these products if supply was to exceed demand.

COMPETITION

All of our businesses are highly competitive and price sensitive. Competition in the contract drilling business traditionally involves factors such as demand, price, efficiency, condition of equipment, availability of labor and equipment, reputation, and customer relations.

Our oil and natural gas operations likewise encounter strong competition from other oil and natural gas companies. Many of these competitors have greater financial, technical, and other resources than we do and have more experience than we do in the exploration for and production of oil and natural gas.

Our continued drilling success and the success of other activities integral to our operations will depend, in part, on our ability to attract and retain experienced geologists, engineers, and other professionals. Competition for these professionals can be extremely intense, particularly when the industry is experiencing favorable conditions.

Our mid-stream segment competes with purchasers and gatherers of all types and sizes, including those affiliated with various producers, other major pipeline companies, as well as independent gatherers for the right to purchase natural gas and NGLs, build gathering and processing systems, and deliver the natural gas and NGLs once the gathering and processing systems are established. The principal elements of competition include the rates, terms, and availability of services, reputation, and the flexibility and reliability of service.

OIL AND NATURAL GAS PROGRAMS AND CONFLICTS OF INTEREST

Unit Petroleum Company serves as the general partner of 16 oil and natural gas limited partnerships. Three of these partnerships were formed in 1984 and 1986 for investment by third parties and 13 (the employee partnerships) were formed each year beginning with 1984 and ending with 2011 to allow our employees and directors the opportunity to participate with Unit Petroleum Company in its operations.

The employee partnerships formed in 1984 through 1999 have been combined into a single consolidated partnership. The employee partnerships each have a set annual percentage (ranging from 1% to 15%) of our interest that the partnership acquires in most of the oil and natural gas wells we drill or acquire for our own account during the year in which the partnership was formed. The total interest the participants have in our oil and natural gas wells by participating in these partnerships does not exceed one percent of our interest in the wells.

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Under the terms of our partnership agreements, the general partner has broad discretionary authority to manage the business and operations of the partnership, including the authority to make decisions regarding the partnership’s participation in a drilling location or a property acquisition, the partnership’s expenditure of funds, and the distribution of funds to partners. Because the business activities of the limited partners and the general partner are not the same, conflicts of interest will exist and it is not possible to entirely eliminate these conflicts. Additionally, conflicts of interest may arise when we are the operator of an oil and natural gas well and also provide contract drilling services. In these cases, the drilling operations are conducted under drilling contracts containing terms and conditions comparable to those contained in our drilling contracts with non-affiliated operators. We believe we fulfill our responsibility to each contracting party and comply fully with the terms of the agreements which regulate these conflicts.

These partnerships are further described in Notes 2 and 10 to the Consolidated Financial Statements in Item 8 of this report.

EMPLOYEES

As of February 14, 2014, we had approximately 1,901 employees in our contract drilling segment, 351 employees in our oil and natural gas segment, 132 employees in our mid-stream segment, and 79 in our general corporate area. None of our employees are members of a union or labor organization nor have our operations ever been interrupted by a strike or work stoppage. We consider relations with our employees to be satisfactory.

GOVERNMENTAL REGULATIONS

Our business depends on the demand for services from the oil and natural gas exploration and development industry, and therefore our business can be affected by political developments and changes in laws and regulations that control or curtail drilling for oil and natural gas for economic, environmental, or other policy reasons.

Various state and federal regulations affect the production and sale of oil and natural gas. All states in which we conduct activities impose varying restrictions on the drilling, production, transportation, and sale of oil and natural gas.

Under the Natural Gas Act of 1938, the Federal Energy Regulatory Commission (the FERC) regulates the interstate transportation and the sale in interstate commerce for resale of natural gas. The FERC’s jurisdiction over interstate natural gas sales has been substantially modified by the Natural Gas Policy Act under which the FERC continued to regulate the maximum selling prices of certain categories of gas sold in “first sales” in interstate and intrastate commerce. Effective January 1, 1993, however, the Natural Gas Wellhead Decontrol Act (the Decontrol Act) deregulated natural gas prices for all “first sales” of natural gas. Because “first sales” include typical wellhead sales by producers, all natural gas produced from our natural gas properties is sold at market prices, subject to the terms of any private contracts which may be in effect. The FERC’s jurisdiction over interstate natural gas transportation is not affected by the Decontrol Act.

Our sales of natural gas will be affected by intrastate and interstate gas transportation regulation. Beginning in 1985, the FERC adopted regulatory changes that have significantly altered the transportation and marketing of natural gas. These changes are intended by the FERC to foster competition by, among other things, transforming the role of interstate pipeline companies from wholesale marketers of natural gas to the primary role of gas transporters. All natural gas marketing by the pipelines is required to divest to a marketing affiliate, which operates separately from the transporter and in direct competition with all other merchants. As a result of the various omnibus rulemaking proceedings in the late 1980s and the subsequent individual pipeline restructuring proceedings of the early to mid-1990s, interstate pipelines must provide open and nondiscriminatory transportation and transportation-related services to all producers, natural gas marketing companies, local distribution companies, industrial end users, and other customers seeking service. Through similar orders affecting intrastate pipelines that provide similar interstate services, the FERC expanded the impact of open access regulations to certain aspects of intrastate commerce.

FERC has pursued other policy initiatives that have affected natural gas marketing. Most notable are (1) the large-scale divestiture of interstate pipeline-owned gas gathering facilities to affiliated or non-affiliated companies; (2) further development of rules governing the relationship of the pipelines with their marketing affiliates; (3) the publication of standards relating to the use of electronic bulletin boards and electronic data exchange by the pipelines to make available transportation information on a timely basis and to enable transactions to occur on a purely electronic basis; (4) further review of the role of the secondary market for released pipeline capacity and its relationship to open access service in the primary market; and (5) development of

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policy and promulgation of orders pertaining to its authorization of market-based rates (rather than traditional cost-of-service based rates) for transportation or transportation-related services upon the pipeline’s demonstration of lack of market control in the relevant service market.

As a result of these changes, independent sellers and buyers of natural gas have gained direct access to the particular pipeline services they need and are better able to conduct business with a larger number of counter parties. We believe these changes generally have improved the access to markets for natural gas while, at the same time, substantially increasing competition in the natural gas marketplace. However, we cannot predict what new or different regulations the FERC and other regulatory agencies may adopt or what effect subsequent regulations may have on production and marketing of natural gas from our properties.

Although in the past Congress has been very active in the area of natural gas regulation as discussed above, the more recent trend has been in favor of deregulation and the promotion of competition in the natural gas industry. Thus, in addition to “first sales” deregulation, Congress also repealed incremental pricing requirements and natural gas use restraints previously applicable. There continually are legislative proposals pending in the Federal and state legislatures which, if enacted, would significantly affect the petroleum industry. At the present time, it is impossible to predict what proposals, if any, might actually be enacted by Congress or the various state legislatures and what effect, if any, these proposals might have on the production and marketing of natural gas by us. Similarly, and despite the trend toward federal deregulation of the natural gas industry, whether or to what extent that trend will continue or what the ultimate effect will be on the production and marketing of natural gas by us cannot be predicted.

Our sales of oil and natural gas liquids currently are not regulated and are at market prices. The prices received from the sale of these products are affected by the cost of transporting these products to market. Much of that transportation is through interstate common carrier pipelines. Effective as of January 1, 1995, the FERC implemented regulations generally grandfathering all previously approved interstate transportation rates and establishing an indexing system for those rates by which adjustments are made annually based on the rate of inflation, subject to certain conditions and limitations. These regulations may tend to increase the cost of transporting oil and natural gas liquids by interstate pipeline, although the annual adjustments could result in decreased rates in a given year. These regulations have generally been approved on judicial review. Every five years, the FERC will examine the relationship between the annual change in the applicable index and the actual cost changes experienced by the oil pipeline industry and make any necessary adjustment in the index to be used during the ensuing five years. We are not able to predict with certainty what effect, if any, the periodic review of the index by the FERC will have on us.

Federal, state, and local agencies also have promulgated extensive rules and regulations applicable to our oil and natural gas exploration, production, and related operations. The states we operate in require permits for drilling operations, drilling bonds, and the filing of reports concerning operations and impose other requirements relating to the exploration of oil and natural gas. Many states also have statutes or regulations addressing conservation matters including provisions for the unitization or pooling of oil and natural gas properties, the establishment of maximum rates of production from oil and natural gas wells, and the regulation of spacing, plugging and, abandonment of such wells. The statutes and regulations of some states limit the rate at which oil and natural gas is produced from our properties. The federal and state regulatory burden on the oil and natural gas industry increases our cost of doing business and affects our profitability. Because these rules and regulations are amended or reinterpreted frequently, we are unable to predict the future cost or impact of complying with those laws.

Our operations are subject to increasingly stringent federal, state, and local laws and regulations governing protection of the environment. These laws and regulations may require acquisition of permits before certain of our operations may be commenced and may restrict the types, quantities, and concentrations of various substances that can be released into the environment. Planning and implementation of protective measures are required to prevent accidental discharges. Spills of oil, natural gas liquids, drilling fluids, and other substances may subject us to penalties and cleanup requirements. Handling, storage, and disposal of both hazardous and non-hazardous wastes are subject to regulatory requirements.

The federal Clean Water Act, as amended by the Oil Pollution Act, the federal Clean Air Act, the federal Resource Conservation and Recovery Act, and their state counterparts, are the primary vehicles for imposition of such requirements and for civil, criminal, and administrative penalties and other sanctions for violation of their requirements. In addition, the federal Comprehensive Environmental Response Compensation and Liability Act and similar state statutes impose strict liability, without regard to fault or the legality of the original conduct, on certain classes of persons who are considered responsible for the release of hazardous substances into the environment. Such liability, which may be imposed for the conduct of others and for conditions others have caused, includes the cost of remedial action as well as damages to natural resources.

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The federal Endangered Species Act, referred to as the “ESA,” and analogous state laws regulate a variety of activities, including oil and gas development, which could have an adverse effect on species listed as threatened or endangered under the ESA or their habitats. The designation of previously unidentified endangered or threatened species could cause oil and natural gas exploration and production operators and service companies to incur additional costs or become subject to operating delays, restrictions or bans in affected areas, which impacts could adversely reduce the amount of drilling activities in affected areas. All three of our business segments could be subject to the effect of one or more species being listed as threatened or endangered within the areas of our operations. Numerous species have been listed or proposed for protected status in areas in which we provide or could in the future undertake operations. For instance, the American Burying Beetle and the Lesser Prairie-Chicken both have habitat in some areas where we operate or provide services. The U.S. Fish and Wildlife Service (“FWS”) identified the Lesser Prairie-Chicken as candidate for listing in 1998 and initiated the process to list it as “threatened” or “endangered” in November 2012. Its habitat is found in Colorado, Kansas, New Mexico, Oklahoma and Texas, and it is listed as “threatened” by the State of Colorado. On December 17, 2013 the FWS stated that it would make a decision “on its final listing determination no later than March 30, 2014.” The sage grouse and certain wildflower species, among others, are also species that have been or are being considered for protected status under the ESA and whose range can coincide with oil and natural gas production activities. The presence of protected species in areas where we provide contract drilling or mid-stream services or conduct exploration and production operations could impair our ability to timely complete or carry out those services and, consequently, adversely affect our results of operations and financial position.

Climate Regulation.    Recent scientific studies have suggested that emissions of certain gases, commonly referred to as “greenhouse gases,” or GHGs, may be contributing to warming of the Earth’s atmosphere. As a result there have been a variety of regulatory developments, proposals or requirements, and legislative initiatives that have been introduced in the United States (as well as other parts of the World) that are focused on restricting the emission of carbon dioxide, methane, and other greenhouse gases.

In 2007, the United States Supreme Court in Massachusetts, et al. v. EPA, held that carbon dioxide may be regulated as an “air pollutant” under the federal Clean Air Act if it represents a health hazard to the public. On December 7, 2009, the U.S. Environmental Protection Agency (“EPA”) responded to the Massachusetts, et al. v. EPA decision and issued a finding that the current and projected concentrations of GHGs in the atmosphere threaten the public health and welfare of current and future generations, and that certain GHGs from new motor vehicles and motor vehicle engines contribute to the atmospheric concentrations of GHG and hence to the threat of climate change. In addition, the EPA issued a final rule, effective in December 2009, requiring the reporting of GHG emissions from specified large (25,000 metric tons or more) GHG emission sources in the U.S., beginning in 2011 for emissions occurring in 2010. During 2010, the EPA proposed revisions to these reporting requirements to apply to all oil and gas production, transmission, processing, and other facilities exceeding certain emission thresholds. In September and November 2013, the EPA proposed further revisions to record keeping and reporting requirements. Which likely will be finalized in 2014. The adoption and implementation of any regulations imposing reporting obligations on, or limiting emissions of GHGs from, our equipment and operations could require us to incur additional costs to reduce emissions of GHGs associated with our operations or could adversely affect demand for the crude oil we gather, transport, store or otherwise handle in connection with our services. In addition, both President Obama and the Administrator of the EPA have repeatedly indicated their preference for comprehensive legislation to address this issue and create the framework for a clean energy economy, with the Obama Administration supporting an emission allowance system. Past proposed legislation in Congress has included an economy wide cap and trade program to reduce U.S. greenhouse gas emissions. Some states are also looking at similar types of laws and regulations.

Our oil and natural gas segment routinely applies hydraulic-fracturing techniques to many of our oil and natural gas properties, including our unconventional resource plays in the Granite Wash of Texas and Oklahoma, the Marmaton of Oklahoma, the Wilcox of Texas, and the Mississippian of Kansas. The EPA, has commenced a study of the potential environmental impacts of hydraulic fracturing, including the impact on drinking water sources and public health, and a committee of the U.S. House of Representatives is also conducting an investigation of hydraulic fracturing practices. Legislation has been introduced before Congress to provide for federal regulation of hydraulic fracturing and to require disclosure of the chemicals used in the fracturing process. On November 20, 2013 the U.S. House of Representatives passed a bill, H.R. 2728, that would block the Department of Interior from regulating hydraulic fracturing in states that already have their own regulations in place; however, it is uncertain that it will ever be enacted and if enacted, it would likely be subject to a Presidential veto. In addition, certain states in which we operate, including Texas, Oklahoma, and Wyoming have adopted, and other states as well as municipalities and other local governmental entities in some states, have and others are considering adopting regulations and ordinances that could impose more stringent permitting, public disclosure, waste disposal, and well construction requirements on these operations, and possibly even restrict or ban hydraulic fracturing in certain circumstances.

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Any new laws, regulation, or permitting requirements regarding hydraulic fracturing could lead to operational delay, or increased operating costs or third party or governmental claims, and could result in additional burdens that could serve to delay or limit the drilling services we provide to third parties whose drilling operations could be impacted by these regulations or increase our costs of compliance and doing business as well as delay the development of unconventional gas resources from shale formations which are not commercial without the use of hydraulic fracturing. Restrictions on hydraulic fracturing could also reduce the amount of oil and natural gas that we are ultimately able to produce from our reserves.

Further, after reviewing extensive comments and making a number of changes to its previously July 28, 2011 proposed rules, on April 17, 2012 the EPA issued its final rules that subject a wide range of oil and gas operations (production, processing, transmission, storage, and distribution) to regulation under the New Source Performance Standards (NSPS) and National Emission Standards for Hazardous Air Pollutants (NESHAPS) programs (with the NSPS and NESHAPS published in the Federal Register on August 16, 2012). The EPA revised the NSPS for volatile organic compounds (VOCs) from leaking components at onshore gas processing plants and the NSPS for sulfur dioxide emissions from natural gas processing plants. The EPA also established standards for certain oil and gas operations not covered by existing standards, which will regulate VOC emissions from gas wells, centrifugal and reciprocating compressors, pneumatic controllers, and storage vessels over a certain size. The EPA also made revisions to the existing leak detection and repair requirements for the oil and gas production source category and the natural gas transmission source category and established action limits reflecting most achievable control for certain previously uncontrolled emission sources. There also are additional testing and related notification, record keeping and reporting requirements. These changes were effective October 15, 2012.

The EPA regulations also result in the first federal air standards for natural gas wells that are hydraulically fractured. Refractured gas wells that use the “green completions” will not be considered affected from a federal standpoint. Operators may choose to flare for now from refractured wells and phase in green completions by January 1, 2015, but any such refractured well will be considered an affected facility for permitting purposes.

The EPA will be designating nonattainment areas for ozone standards for outdoor quality. These areas will include those areas with significant oil and gas activities. Nonattainment areas will be required to submit state implementation plans in 2015 and to attain the standard by 2015 and 2018 for areas classified as “Marginal” and “Moderate,” respectively. Areas classified as “Serious” must attain by 2021. The federal NSPS constitute a federally required minimum level of control. States have the flexibility to put their own program in place or implement existing programs as long as they are at least as protective as the federal NSPS.

Consequently, while we have been in the process of assessing and implementing the new EPA requirements as required, at this time we do not know and cannot predict with any degree of certainty what areas the EPA will designate nonattainment and what classification will be applied nor what the states may implement for such nonattainment areas which may affect our business segments and use of hydraulic fracturing practices.

We do not know and cannot predict whether there will be any further proposed legislation or regulations It is possible that such future laws, regulations, and/or ordinances could result in increasing our compliance costs or additional operating restrictions as well as those of our customers. It is also possible that such future developments could curtail the demand for fossil fuels which could adversely affect the demand for our services, which in turn could adversely affect our future results of operations. Likewise we cannot predict with any certainty whether any changes to temperature, storm intensity or precipitation patterns as a result of climate change (or otherwise) will have a material impact on our operations.

Compliance with applicable environmental requirements has not, to date, had a material effect on the cost of our operations, earnings, or competitive position. However, as noted above in connection with our discussion of the regulation of GHGs and hydraulic fracturing, compliance with amended, new or more stringent requirements of existing environmental regulations or requirements may cause us to incur additional costs or subject us to liabilities that may have a material adverse effect on our results of operations and financial condition.

FINANCIAL INFORMATION ABOUT GEOGRAPHIC AREAS

Revenues from our Canadian operations during the last three fiscal years, as well as information relating to long-lived assets attributable to those operations are immaterial. We have no other international operations.

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Item 1A. Risk Factors

FORWARD-LOOKING STATEMENTS/CAUTIONARY STATEMENT AND RISK FACTORS

This report contains “forward-looking statements” – meaning, statements related to future events within the meaning of Section 27A of the Securities Act of 1933, as amended and Section 21E of the Securities Exchange Act of 1934, as amended. All statements, other than statements of historical facts, included or incorporated by reference in this document which addresses activities, events or developments which we expect or anticipate will or may occur in the future, are forward-looking statements. The words “believes,” “intends,” “expects,” “anticipates,” “projects,” “estimates,” “predicts,” and similar expressions are used to identify forward-looking statements. This report modifies and supersedes documents filed by us before this report. In addition, certain information that we file with the SEC in the future will automatically update and supersede information contained in this report.

These forward-looking statements include, among others, such things as:

• the amount and nature of our future capital expenditures and how we expect to fund our capital expenditures;

• the number of wells we plan to drill or rework;

• prices for oil, NGLs, and natural gas;

• demand for oil, NGLs, and natural gas;

• our exploration and drilling prospects;

• the estimates of our proved oil, NGLs, and natural gas reserves;

• oil, NGLs, and natural gas reserve potential;

• development and infill drilling potential;

• expansion and other development trends of the oil and natural gas industry;

• our business strategy;

• our plans to maintain or increase production of oil, NGLs, and natural gas;

• the number of gathering systems and processing plants we plan to construct or acquire;

• volumes and prices for natural gas gathered and processed;

• expansion and growth of our business and operations;

• demand for our drilling rigs and drilling rig rates;

• our belief that the final outcome of our legal proceedings will not materially affect our financial results;

• our ability to timely secure third-party services used in completing our wells;

• our ability to transport or convey our oil, NGLs, or natural gas production to established pipeline systems;

• impact of federal and state legislative and regulatory actions impacting our costs and increasing operating restrictions or delays as well as other adverse impacts on our business;

• our projected production guidelines for the year;

• our anticipated capital budgets; and

• the number of wells our oil and natural gas segment plans to drill during the year.

These statements are based on certain assumptions and analyses made by us in light of our experience and our perception of historical trends, current conditions, and expected future developments as well as other factors we believe are appropriate in the circumstances. Whether actual results and developments will conform to our expectations and predictions is subject to a number of risks and uncertainties any one or combination of which could cause our actual results to differ materially from our expectations and predictions, including:

• the risk factors discussed in this document and in the documents (if any) we incorporate by reference;

• general economic, market, or business conditions;

• the availability of and nature of (or lack of) business opportunities that we pursue;

• demand for our land drilling services;

• changes in laws or regulations;

• decreases or increases in commodity prices; and

• other factors, most of which are beyond our control.

You should not place undue reliance on any of these forward-looking statements. Except as required by law, we disclaim any current intention to update forward-looking information and to release publicly the results of any future revisions we may make to forward-looking statements to reflect events or circumstances after the date of this document to reflect the occurrence of unanticipated events.

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In order to help provide you with a more thorough understanding of the possible effects of some of these influences on any forward-looking statements made by us, the following discussion outlines some (but not all) of the factors that could in the future cause our consolidated results to differ materially from those that may be presented in any forward-looking statement made by us or on our behalf.

Contract Drilling Customer Demand.    With the exception of the drilling we do for our own account, the demand for our contract drilling services depends entirely on the needs of third parties. Based on past history, these parties’ requirements are subject to a number of factors, independent of any subjective factors that directly impact the demand for our drilling rigs, including the availability of funds to carry out their drilling operations. For many of these parties, even if they have available funds, their decision to spend those funds is often based on the then current price for oil, NGLs, and natural gas. Other factors that affect our ability to work our drilling rigs are: the weather which, under certain circumstances, can delay or even cause the abandonment of a project by an operator; the competition we face in securing the award of drilling contracts; our lack of prior history in and recognition in a new market area; and the availability of labor to operate our drilling rigs.

Oil, NGLs, and Natural Gas Prices.    The prices we receive for our oil, NGLs, and natural gas production have a direct impact on our revenues, profitability, and cash flow as well as our ability to meet our projected financial and operational goals. The prices for oil, NGLs, and natural gas are determined on a number of factors beyond our control, including:

• the demand for and supply of oil, NGLs, and natural gas;

• current weather conditions in the continental United States (which can greatly influence the demand and prices for natural gas at any given time);

• the amount and timing of liquid natural gas and liquefied petroleum gas imports and exports; and

• the ability of current distribution systems in the United States to effectively meet the demand for oil, NGLs, and natural gas at any given time, particularly in times of peak demand which may result because of adverse weather conditions.

Oil prices are extremely sensitive to influences domestic and foreign based on political, social or economic underpinnings, any one of which could have an immediate and significant effect on the price and supply of oil. In addition, prices of oil, NGLs, and natural gas have been at various times influenced by trading on the commodities markets. That trading, at times, has tended to increase the volatility associated with these prices resulting in large differences in prices even on a week-to-week and month-to-month basis. All of these factors, especially when coupled with the fact that much of our product prices are determined on a daily basis, can, and at times do, lead to wide fluctuations in the prices we receive.

Based on our 2013 production, a $0.10 per Mcf change in what we receive for our natural gas production, without the effect of hedging, would result in a corresponding $448,000 per month ($5.4 million annualized) change in our pre-tax operating cash flow. A $1.00 per barrel change in our oil price, without the effect of hedging, would have a $268,000 per month ($3.2 million annualized) change in our pre-tax operating cash flow and a $1.00 per barrel change in our NGLs price, without the effect of hedging, would have a $310,000 per month ($3.7 million annualized) change in our pre-tax operating cash flow.

In order to reduce our exposure to short-term fluctuations in the price of oil, NGLs, and natural gas, we sometimes enter into hedging arrangements such as swaps and collars. To date, we have hedged part, but not all of our production which only provides price protection against declines in oil, NGLs, and natural gas prices on the production subject to our hedges, but not otherwise. Should market prices for the production we have hedged exceed the prices due under our hedges, our hedging arrangements then expose us to risk of financial loss and limit the benefit to us of those increases in market prices. During 2013, substantially all of our oil, NGLs, and natural gas volumes were sold at market responsive prices. To help manage our cash flow and capital expenditure requirements, we hedged approximately 90% and 65% of our 2013 average daily production for oil and natural gas, respectively. A more thorough discussion of our hedging arrangements is contained in the Management’s Discussion and Analysis of Financial Condition and Results of Operations section of this report contained in Item 7.

Uncertainty of Oil, NGLs, and Natural Gas Reserves; Ceiling Test.    There are many uncertainties inherent in estimating quantities of oil, NGLs, and natural gas reserves and their values, including many factors beyond our control. The oil, NGLs, and natural gas reserve information included in this report represents only an estimate of these reserves. Oil, NGLs, and natural gas reservoir engineering is a subjective and an inexact process of estimating underground accumulations of oil, NGLs, and natural gas that cannot be measured in an exact manner. Estimates of economically recoverable oil, NGLs, and

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natural gas reserves depend on a number of variable factors, including historical production from the area compared with production from other producing areas, and assumptions concerning:

• reservoir size;

• the effects of regulations by governmental agencies;

• future oil, NGLs, and natural gas prices;

• future operating costs;

• severance and excise taxes;

• operational risks;

• development costs; and

• workover and remedial costs.

Some or all of these assumptions may vary considerably from actual results. For these reasons, estimates of the economically recoverable quantities of oil, NGLs, and natural gas attributable to any particular group of properties, classifications of those oil, NGLs, and natural gas reserves based on risk of recovery, and estimates of the future net cash flows from oil, NGLs, and natural gas reserves prepared by different engineers or by the same engineers but at different times may vary substantially. Accordingly, oil, NGLs, and natural gas reserve estimates may be subject to periodic downward or upward adjustments. Actual production, revenues, and expenditures with respect to our oil, NGLs, and natural gas reserves will likely vary from estimates and those variances may be material.

The information regarding discounted future net cash flows included in this report is not necessarily the current market value of the estimated oil, NGLs, and natural gas reserves attributable to our properties. The use of full cost accounting requires us to use the unweighted arithmetic average of the commodity prices existing on the first day of each of the 12 months before the end of the reporting period to calculate discounted future revenues, unless prices were otherwise determined under contractual arrangements. Actual future prices and costs may be materially higher or lower. Actual future net cash flows are also affected, in part, by the following factors:

• the amount and timing of oil, NGLs, and natural gas production;

• supply and demand for oil, NGLs, and natural gas;

• increases or decreases in consumption; and

• changes in governmental regulations or taxation.

In addition, the 10% discount factor, required by the SEC for use in calculating discounted future net cash flows for reporting purposes, is not necessarily the most appropriate discount factor based on interest rates in effect from time to time and the risks associated with our operations or the oil and natural gas industry in general.

We review quarterly the carrying value of our oil and natural gas properties under the full cost accounting rules of the SEC. Under these rules, capitalized costs of proved oil and natural gas properties may not exceed the present value of estimated future net revenues from those proved reserves, discounted at 10%. Application of this “ceiling test” generally requires pricing future revenue at the unescalated 12-month average price and requires a write-down for accounting purposes if we exceed the ceiling. We may be required to write down the carrying value of our oil and natural gas properties when oil, NGLs, and natural gas prices are depressed. If a write-down is required, it would result in a charge to earnings but would not impact our cash flow from operating activities. Once incurred, a write-down is not reversible.

As a result of these ceiling test rules, during the quarters ending June 30, 2012 and December 31, 2012, we recorded a non-cash ceiling test write down of $115.9 million pre-tax ($72.1 million, net of tax) and $167.7 million pre-tax $104.4 million, net of tax), respectively. No ceiling test write down was necessary during 2011 or 2013.

If there are declines in the 12-month average prices, we may be required to record a write-down in future periods.

We are continually identifying and evaluating opportunities to acquire oil and natural gas properties, including acquisitions that would be significantly larger than those we have consummated to date. We cannot assure you that we will successfully consummate any acquisition, that we will be able to acquire producing oil and natural gas properties that contain economically recoverable reserves or that any acquisition will be profitably integrated into our operations.

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Debt and Bank Borrowing.    We have incurred and currently expect to continue to incur substantial capital expenditures because of the growth in our operations. Historically, we have funded our capital needs through a combination of internally generated cash flow and borrowings under our bank credit agreement. In 2011 and 2012, we issued $250.0 million (the 2011 Notes) and $400.0 million (the 2012 Notes), respectively, of senior subordinated notes (collectively, the Notes). We have also, from time to time, obtained funds through equity financing. We currently have, and will continue to have, a certain amount of indebtedness. At December 31, 2013, we had no outstanding long-term debt under our credit agreement and the amount of the Notes, net of unamortized discount, was $645.7 million.

Depending on the amount of our debt, the cash flow needed to satisfy that debt and the covenants contained in our bank credit agreement and those applicable to the Notes could:

• limit funds otherwise available for financing our capital expenditures, our drilling program or other activities or cause us to curtail these activities;

• limit our flexibility in planning for or reacting to changes in our business;

• place us at a competitive disadvantage to those of our competitors that are less indebted than we are;

• make us more vulnerable during periods of low oil, NGLs, and natural gas prices or in the event of a downturn in our business; and

• prevent us from obtaining additional financing on acceptable terms or limit amounts available under our existing or any future credit facilities.

Our ability to meet our debt obligations depends on our future performance. If the requirements of our indebtedness are not satisfied, a default could be deemed to occur and our lenders or the holders of the Notes would be entitled to accelerate the payment of the outstanding indebtedness. If that were to occur, we would not have sufficient funds available and probably would not be able to obtain the financing required to meet our obligations.

The amount of our existing debt, as well as our future debt, if any, is, to a large extent, based on the costs associated with the projects we undertake at any given time and of our cash flow. Generally, our normal operating costs are those resulting from the drilling of oil and natural gas wells, the acquisition of producing properties, the costs associated with the maintenance, upgrade, or expansion of our drilling rig fleet, and the operations of our natural gas buying, selling, gathering, processing, and treating systems. To some extent, these costs, particularly the first two, are discretionary and we maintain a degree of control regarding the timing or the need to incur them. But, in some cases, unforeseen circumstances may arise, such as in the case of an unanticipated opportunity to make a large acquisition or the need to replace a costly drilling rig component due to an unexpected loss, which could force us to incur additional debt above that which we had expected or forecasted. Likewise, if our cash flow should prove to be insufficient to cover our current cash requirements we would need to increase our debt either through bank borrowings or otherwise.

RISK FACTORS

There are many other factors that could adversely affect our business. The following discussion describes the material risks currently known to us. However, additional risks that we do not know about or that we currently view as immaterial may also impair our business or adversely affect the value of our securities. You should carefully consider the risks described below together with the other information contained in, or incorporated by reference into, this report.

If demand for oil, NGLs, and natural gas is reduced, our ability to market as well as produce our oil, NGLs, and natural gas may be negatively affected.

Historically, oil, NGLs, and natural gas prices have been extremely volatile, with significant increases and significant price drops being experienced from time to time. In the future, various factors beyond our control will have a significant effect on oil, NGLs, and natural gas prices. Such factors include, among other things, the domestic and foreign supply of oil, NGLs, and natural gas, the price of foreign imports, the levels of consumer demand, the price and availability of alternative fuels, the availability of pipeline capacity, and changes in existing and proposed federal regulation and price controls.

The oil, NGLs, and natural gas markets are also unsettled due to a number of factors. Production from oil and natural gas wells in some geographic areas of the United States has been curtailed for considerable periods of time due to a lack of market

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demand and transportation and storage capacity. It is possible, however, that some of our wells may in the future be shut-in or that oil, NGLs, and natural gas will be sold on terms less favorable than might otherwise be obtained should demand for oil, NGLs, and natural gas decrease. Competition for available markets has been vigorous and there remains great uncertainty about prices that purchasers will pay. Oil, NGLs, and natural gas surpluses could result in our inability to market oil, NGLs, and natural gas profitably, causing us to curtail production and/or receive lower prices for our oil, NGls, and natural gas, situations which would adversely affect us.

Disruptions in the financial markets could affect our ability to obtain financing or refinance existing indebtedness on reasonable terms and may have other adverse effects.

Commercial-credit market disruptions may result in tight credit markets in the United States. Liquidity in the global-credit markets can be severely contracted by market disruptions making terms for certain financings less attractive, and in certain cases, result in the unavailability of certain types of financing. As a result of credit-market turmoil, we may not be able to obtain debt financing, or refinance existing indebtedness on favorable terms, which could affect operations and financial performance.

Oil, NGLs, and natural gas prices are volatile, and low prices have negatively affected our financial results and could do so in the future.

Our revenues, operating results, cash flow, and future rate of growth depend substantially on prevailing prices for oil, NGLs, and natural gas. Historically, oil, NGLs, and natural gas prices and markets have been volatile, and they are likely to continue to be volatile in the future. Any decline in prices in the future would have a negative impact on our future financial results.

Prices for oil, NGLs, and natural gas are subject to wide fluctuations in response to relatively minor changes in the supply of and demand for oil, NGLs, and natural gas, market uncertainty, and a variety of additional factors that are beyond our control. These factors include:

• political conditions in oil producing regions;

• the ability of the members of the Organization of Petroleum Exporting Countries to agree on prices and their ability to maintain production quotas;

• the price of foreign oil imports;

• imports and exports of liquefied natural gas;

• actions of governmental authorities;

• the domestic and foreign supply of oil, NGLs, and natural gas;

• the level of consumer demand;

• U.S. storage levels of oil, NGLs, and natural gas;

• weather conditions;

• domestic and foreign government regulations;

• the price, availability, and acceptance of alternative fuels; and

• worldwide economic conditions.

These factors and the volatile nature of the energy markets make it impossible to predict with any certainty the future prices of oil, NGLs, and natural gas.

Our contract drilling operations depend on levels of activity in the oil, NGLs, and natural gas exploration and production industry.

Our contract drilling operations depend on the level of activity in oil, NGLs, and natural gas exploration and production in our operating markets. Both short-term and long-term trends in oil, NGLs, and natural gas prices affect the level of that activity. Because oil, NGLs, and natural gas prices are volatile, the level of exploration and production activity can also be

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volatile. Any decrease from current oil, NGLs, and natural gas prices would depress the level of exploration and production activity. This, in turn, would likely result in a decline in the demand for our drilling services and would have an adverse effect on our contract drilling revenues, cash flows, and profitability. As a result, the future demand for our drilling services is uncertain.

The industries in which we operate are highly competitive, and many of our competitors have greater resources than we do.

The drilling industry in which we operate is generally very competitive. Most drilling contracts are awarded on the basis of competitive bids, which may result in intense price competition. Some of our competitors in the contract drilling industry have greater financial and human resources than we do. These resources may enable them to better withstand periods of low drilling rig utilization, to compete more effectively on the basis of price and technology, to build new drilling rigs or acquire existing drilling rigs, and to provide drilling rigs more quickly than we do in periods of high drilling rig utilization.

The oil and natural gas industry is also highly competitive. We compete in the areas of property acquisitions and oil and natural gas exploration, development, production, and marketing with major oil companies, other independent oil and natural gas concerns, and individual producers and operators. In addition, we must compete with major and independent oil and natural gas concerns in recruiting and retaining qualified employees. Many of our competitors in the oil and natural gas industry have substantially greater resources than we do.

The midstream industry is also highly competitive. We compete in areas of gathering, processing, transporting, and treating natural gas with other midstream companies. We are continually competing with larger midstream companies for acquisitions and construction projects. Many of our competitors have greater financial resources, human resources, and larger geographic presence than we do currently.

Continued growth through acquisitions is not assured.

In the past, we have experienced growth in each of our segments, in part, through mergers and acquisitions. The contract land drilling industry, the exploration and development industry, as well as the gas gathering and processing industry, have experienced significant consolidation over the past several years, and there can be no assurance that acquisition opportunities will continue to be available. Additionally, we are likely to continue to face intense competition from other companies for available acquisition opportunities.

There can be no assurance that we will:

• be able to identify suitable acquisition opportunities;

• have sufficient capital resources to complete additional acquisitions;

• successfully integrate acquired operations and assets;

• effectively manage the growth and increased size;

• maintain the crews and market share to operate any future drilling rigs we may acquire; or

• successfully improve our financial condition, results of operations, business or prospects in any material manner as a result of any completed acquisition.

We may incur substantial indebtedness to finance future acquisitions and also may issue debt instruments, equity securities, or convertible securities in connection with any acquisitions. Debt service requirements could represent a significant burden on our results of operations and financial condition and the issuance of additional equity would be dilutive to existing shareholders. Also, continued growth could strain our management, operations, employees, and other resources.

Successful acquisitions, particularly those of oil and natural gas companies or of oil and natural gas properties require an assessment of a number of factors, many of which are beyond our control. These factors include recoverable reserves, exploration potential, future oil, NGLs, and natural gas prices, operating costs, and potential environmental and other liabilities. Such assessments are inexact and their accuracy is inherently uncertain.

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Our operations have significant capital requirements, and our indebtedness could have important consequences.

We have experienced and may continue to experience substantial capital needs in the growth of our operations. We have $645.7 million of indebtedness outstanding (net of unamortized discount) under the senior subordinated notes we have issued to date and in addition, have the right to borrow up to $500.0 million under our credit agreement. As of February 14, 2014, we had no outstanding borrowings under our credit agreement. Our level of indebtedness, the cash flow needed to satisfy our indebtedness, and the covenants governing our indebtedness could:

• limit funds available for financing capital expenditures, our drilling program or other activities or cause us to curtail these activities;

• limit our flexibility in planning for, or reacting to changes in, our business;

• place us at a competitive disadvantage to some of our competitors that are less leveraged than we are;

• make us more vulnerable during periods of low oil, NGLs, and natural gas prices or in the event of a downturn in our business; and

• prevent us from obtaining additional financing on acceptable terms or limit amounts available under our existing or any future credit facilities.

Our ability to meet our debt service and other contractual and contingent obligations will depend on our future performance. In addition, lower oil, NGLs, and natural gas prices could result in future reductions in the amount available for borrowing under our credit agreement, reducing our liquidity, and even triggering mandatory loan repayments.

The instruments governing our indebtedness contain various covenants limiting the conduct of our business.

The indentures governing our senior subordinated notes and our credit agreement contain various restrictive covenants that limit the conduct of our business. In particular, these agreements will place certain limits on our ability to, among other things:

• incur additional indebtedness, guarantee obligations or issue disqualified capital stock;

• pay dividends or distributions on our capital stock or redeem, repurchase or retire our capital stock;

• make investments or other restricted payments;

• grant liens on assets;

• enter into transactions with stockholders or affiliates;

• sell assets;

• issue or sell capital stock of certain subsidiaries; and

• merge or consolidate.

In addition, our credit agreement also requires us to maintain a minimum current ratio and a maximum leverage ratio.

If we fail to comply with the restrictions in the indentures governing our senior subordinated notes, our credit agreement or any other subsequent financing agreements, a default may allow the creditors, if the agreements so provide, to accelerate the related indebtedness as well as any other indebtedness to which a cross-acceleration or cross-default provision applies. If that occurs, we may not be able to make all of the required payments or borrow sufficient funds to refinance that debt. Even if new financing were available at that time, it may not be on terms acceptable to us. In addition, lenders may be able to terminate any commitments they had made to make available further funds.

Our future performance depends on our ability to find or acquire additional oil, NGLs, and natural gas reserves that are economically recoverable.

In general, production from oil and natural gas properties declines as reserves are depleted, with the rate of decline depending on reservoir characteristics. Unless we successfully replace the reserves that we produce, our reserves will decline,

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resulting eventually in a decrease in oil, NGLs, and natural gas production and lower revenues and cash flow from operations. Historically, we have succeeded in increasing reserves after taking production into account through exploration and development. We have conducted these activities on our existing oil and natural gas properties as well as on newly acquired properties. We may not be able to continue to replace reserves from these activities at acceptable costs. Lower prices of oil, NGLs, and natural gas may further limit the kinds of reserves that can economically be developed. Lower prices also decrease our cash flow and may cause us to decrease capital expenditures.

We are continually identifying and evaluating opportunities to acquire oil and natural gas properties, including acquisitions that would be significantly larger than those consummated to date by us. We cannot assure you that we will successfully consummate any acquisition, that we will be able to acquire producing oil and natural gas properties that contain economically recoverable reserves or that any acquisition will be profitably integrated into our operations.

The competition for producing oil and natural gas properties is intense. This competition could mean that to acquire properties we will have to pay higher prices and accept greater ownership risks than we have in the past.

Our exploration and production and mid-stream operations involve a high degree of business and financial risk which could adversely affect us.

Exploration and development involve numerous risks that may result in dry holes, the failure to produce oil, NGLs, and natural gas in commercial quantities and the inability to fully produce discovered reserves. The cost of drilling, completing, and operating wells is substantial and uncertain. Numerous factors beyond our control may cause the curtailment, delay, or cancellation of drilling operations, including:

• unexpected drilling conditions;

• pressure or irregularities in formations;

• capacity of pipeline systems;

• equipment failures or accidents;

• adverse weather conditions;

• compliance with governmental requirements; and

• shortages or delays in the availability of drilling rigs or delivery crews and the delivery of equipment.

Exploratory drilling is a speculative activity. Although we may disclose our overall drilling success rate, those rates may decline. Although we may discuss drilling prospects that we have identified or budgeted for, we may ultimately not lease or drill these prospects within the expected time frame, or at all. Lack of drilling success will have an adverse effect on our future results of operations and financial condition.

Our mid-stream operations involve numerous risks, both financial and operational. The cost of developing gathering systems and processing plants is substantial and our ability to recoup these costs is uncertain. Our operations may be curtailed, delayed, or canceled as a result of many things beyond our control, including:

• unexpected changes in the deliverability of natural gas reserves from the wells connected to the gathering systems;

• availability of competing pipelines in the area;

• capacity of pipeline systems;

• equipment failures or accidents;

• adverse weather conditions;

• compliance with governmental requirements;

• delays in the development of other producing properties within the gathering system’s area of operation; and

• demand for natural gas and its constituents.

Many of the wells from which we gather and process natural gas are operated by other parties. As a result, we have little control over the operations of those wells which can act to increase our risk. Operators of those wells may act in ways that are not in our best interests.

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Competition for experienced technical personnel may negatively impact our operations or financial results.

Our continued oil and natural gas segment and mid-stream segment success and the success of other activities integral to our operations will depend, in part, on our ability to attract and retain experienced geologists, engineers, and other professionals. Competition for these professionals can be extremely intense, particularly when the industry is experiencing favorable conditions.

Our hedging arrangements might limit the benefit of increases in oil, NGLs, and natural gas prices.

In order to reduce our exposure to short-term fluctuations in the price of oil, NGLs, and natural gas, we sometimes enter into hedging arrangements. Our hedging arrangements apply to only a portion of our production and provide only partial price protection against declines in oil, NGLs, and natural gas prices. These hedging arrangements may expose us to risk of financial loss and limit the benefit to us of increases in prices.

Estimates of our reserves are uncertain and may prove to be inaccurate.

There are numerous uncertainties inherent in estimating quantities of proved reserves and their values, including many factors beyond our control. The reserve data represents only estimates. Reservoir engineering is a subjective and inexact process of estimating underground accumulations of oil and natural gas that cannot be measured in an exact manner. Estimates of economically recoverable oil, NGLs, and natural gas reserves depend on a number of variable factors, including historical production from the area compared with production from other producing areas, and assumptions concerning:

• the effects of regulations by governmental agencies;

• future oil, NGLs, and natural gas prices;

• future operating costs;

• severance and excise taxes;

• development costs; and

• workover and remedial costs.

Some or all of these assumptions may vary considerably from actual results. For these reasons, estimates of the economically recoverable quantities of oil, NGLs, and natural gas attributable to any particular group of properties, classifications of those reserves based on risk of recovery, and estimates of the future net cash flows from reserves prepared by different engineers or by the same engineers but at different times may vary substantially. Accordingly, reserve estimates may be subject to downward or upward adjustment. Actual production, revenues and expenditures with respect to our reserves will likely vary from estimates, and those variances may be material.

The information regarding discounted future net cash flows should not be considered as the current market value of the estimated oil, NGLs, and natural gas reserves attributable to our properties. As required by the SEC, the estimated discounted future net cash flows from proved reserves are based on prices on the first day of the month for each month within the 12-month period before the end of the reporting period and costs as of the date of the estimate, while actual future prices and costs may be materially higher or lower. Actual future net cash flows also will be affected by the following factors:

• the amount and timing of actual production;

• supply and demand for oil, NGLs, and natural gas;

• increases or decreases in consumption; and

• changes in governmental regulations or taxation.

In addition, the 10% per year discount factor, which is required by the SEC to be used in calculating discounted future net cash flows for reporting purposes, is not necessarily the most appropriate discount factor based on interest rates in effect from time to time and risks associated with our operations or the oil and natural gas industry in general.

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If oil, NGLs, and natural gas prices decrease or are unusually volatile, we may be required to take write-downs of our oil and natural gas properties, the carrying value of our drilling rigs or our natural gas gathering and processing systems.

We review quarterly the carrying value of our oil and natural gas properties under the full cost accounting rules of the SEC. Under these rules, capitalized costs of proved oil and natural gas properties may not exceed the present value of estimated future net revenues from proved reserves, discounted at 10% per year. Application of the ceiling test generally requires pricing future revenue at the unweighted arithmetic average of the price on the first day of month for each month within the 12-month period prior to the end of the reporting period, unless prices were defined by contractual arrangements, and requires a write-down for accounting purposes if the ceiling is exceeded. We may be required to write down the carrying value of our oil and natural gas properties when oil, NGLs, and natural gas prices are depressed. If a write-down is required, it would result in a charge to earnings, but would not impact cash flow from operating activities. Once incurred, a write-down of oil and natural gas properties is not reversible at a later date.

Our drilling equipment, transportation equipment, gas gathering and processing systems, and other property and equipment are carried at cost. We are required to periodically test to see if these values, including associated goodwill and other intangible assets, have been impaired whenever events or changes in circumstances suggest the carrying amount may not be recoverable. If any of these assets are determined to be impaired, the loss is measured as the amount by which the carrying amount of the asset exceeds its fair value. An estimate of fair value is based on the best information available, including prices for similar assets. Changes in these estimates could cause us to reduce the carrying value of property, equipment, and related intangible assets. Once these values have been reduced, they are not reversible.

Our operations present inherent risks of loss that, if not insured or indemnified against, could adversely affect our results of operations.

Our contract drilling operations are subject to many hazards inherent in the drilling industry, including blowouts, cratering, explosions, fires, loss of well control, loss of hole, damaged or lost drilling equipment, and damage or loss from inclement weather. Our exploration and production and mid-stream operations are subject to these and similar risks. Any of these events could result in personal injury or death, damage to or destruction of equipment and facilities, suspension of operations, environmental damage, and damage to the property of others. Generally, drilling contracts provide for the division of responsibilities between a drilling company and its customer, and we seek to obtain indemnification from our drilling customers by contract for some of these risks. To the extent that we are unable to transfer these risks to drilling customers by contract or indemnification agreements (or to the extent we assume obligations of indemnity or assume liability for certain risks under our drilling contracts), we seek protection from some of these risks through insurance. However, some risks are not covered by insurance and we cannot assure you that the insurance we do have or the indemnification agreements we have entered into will adequately protect us against liability from all of the consequences of the hazards described above. The occurrence of an event not fully insured or indemnified against, or the failure of a customer to meet its indemnification obligations, could result in substantial losses. In addition, we cannot assure you that insurance will be available to cover any or all of these risks. Even if available, the insurance might not be adequate to cover all of our losses, or we might decide against obtaining that insurance because of high premiums or other costs.

In addition, we are not the operator of many of our wells. As a result, our operating risks for those wells and our ability to influence the operations for those wells are less subject to our control. Operators of those wells may act in ways that are not in our best interests.

Governmental and environmental regulations could adversely affect our business.

Our business is subject to federal, state, and local laws and regulations on taxation, the exploration for and development, production, and marketing of oil and natural gas, and safety matters. Many laws and regulations require drilling permits and govern the spacing of wells, rates of production, prevention of waste, unitization and pooling of properties, and other matters. These laws and regulations have increased the costs of planning, designing, drilling, installing, operating, and abandoning our oil and natural gas wells and other facilities. In addition, these laws and regulations, and any others that are passed by the jurisdictions where we have production, could limit the total number of wells drilled or the allowable production from successful wells, which could limit our revenues.

We are (or could become) subject to complex environmental laws and regulations adopted by the various jurisdictions where we own or operate. We could incur liability to governments or third parties for discharges of oil, natural gas or other pollutants into the air, soil or water, including responsibility for remedial costs. We could potentially discharge these materials

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into the environment in any number of ways including the following:

• from a well or drilling equipment at a drill site;

• from gathering systems, pipelines, transportation facilities, and storage tanks;

• damage to oil and natural gas wells resulting from accidents during normal operations; and

• blowouts, cratering, and explosions.

Because the requirements imposed by laws and regulations are frequently changed, we cannot assure you that laws and regulations enacted in the future, including changes to existing laws and regulations, will not adversely affect our business. The current Congress and White House administration may impose or change laws and regulations that will adversely affect our business. With the trend toward stricter standards, greater regulation, and more extensive permit requirements, our risks related to environmental matters and our environmental expenditures could increase in the future. In addition, because we acquire interests in properties that have been operated in the past by others, we may be liable for environmental damage caused by the former operators, which liability could be material.

Any future implementation of price controls on oil, NGLs, and natural gas would affect our operations.

Certain groups have asserted efforts to have the United States Congress impose some form of price controls on either oil, natural gas, or both. There is no way at this time to know what result these efforts will have nor, if implemented, their effect on our operations. However, it is possible that these efforts, if successful, would serve to limit the amount that we might be able to get for our future oil, NGLs, and natural gas production. Any future limits on the price of oil, NGLs, and natural gas could also result in adversely affecting the demand for our drilling services.

Our shareholders’ rights plan and provisions of Delaware law and our by-laws and charter could discourage change in control transactions and prevent shareholders from receiving a premium on their investment.

Our by-laws and charter provide for a classified board of directors with staggered terms and authorizes the board of directors to set the terms of preferred stock. In addition, our charter and Delaware law contain provisions that impose restrictions on business combinations with interested parties. We have also adopted a shareholders’ rights plan. Because of our shareholders’ rights plan and these provisions of our by-laws, charter, and Delaware law, persons considering unsolicited tender offers or other unilateral takeover proposals may be more likely to negotiate with our board of directors rather than pursue non-negotiated takeover attempts. As a result, these provisions may make it more difficult for our shareholders to benefit from transactions that are opposed by an incumbent board of directors.

New technologies may cause our current exploration and drilling methods to become obsolete, resulting in an adverse effect on our production.

Our industry is subject to rapid and significant advancements in technology, including the introduction of new products and services using new technologies. As competitors use or develop new technologies, we may be placed at a competitive disadvantage, and competitive pressures may force us to implement new technologies at a substantial cost. In addition, competitors may have greater financial, technical, and personnel resources that allow them to enjoy technological advantages and may in the future allow them to implement new technologies before we can. We cannot be certain that we will be able to implement technologies on a timely basis or at a cost that is acceptable to us. One or more of the technologies that we currently use or that we may implement in the future may become obsolete or may not work as we expected and we may be adversely affected.

We may be affected by climate change and market or regulatory responses to climate change.

Climate change, including the impact of potential global warming regulations, could have a material adverse effect on our results of operations, financial condition, and liquidity. Restrictions, caps, taxes, or other controls on emissions of greenhouse gasses, including diesel exhaust, could significantly increase our operating costs. Restrictions on emissions could also affect our customers that (a) use commodities that we carry to produce energy, (b) use significant amounts of energy in producing or delivering the commodities we carry, or (c) manufacture or produce goods that consume significant amounts of energy or burn fossil fuels, including chemical producers, farmers and food producers, and automakers and other manufacturers. Significant cost increases, government regulation, or changes of consumer preferences for goods or services relating to alternative sources

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of energy or emissions reductions could materially affect the markets for the commodities associated with our business, which in turn could have a material adverse effect on our results of operations, financial condition, and liquidity. Government incentives encouraging the use of alternative sources of energy could also affect certain of our customers and the markets for certain of the commodities associated with our business in an unpredictable manner that could alter our business activities. Finally, we could face increased costs related to defending and resolving legal claims and other litigation related to climate change and the alleged impact of our operations on climate change. Any of these factors, individually or in operation with one or more of the other factors, or other unforeseen impacts of climate change could reduce the amount of business activity we conduct and have a material adverse effect on our results of operations, financial condition, and liquidity.

The results of our operations depend on our ability to transport oil, NGLs, and gas production to key markets.

The marketability of our oil, NGLs, and natural gas production depends in part on the availability, proximity, and capacity of pipeline systems, refineries, and other transportation sources. The unavailability of or lack of available capacity on these systems and facilities could result in the shut-in of producing wells or the delay or discontinuance of development plans for properties. Federal and state regulation of oil, NGLs, and natural gas production and transportation, tax and energy policies, changes in supply and demand, pipeline pressures, damage to or destruction of pipelines, and general economic conditions could adversely affect our ability to produce, gather and, transport oil, NGLs, and natural gas.

The loss of one or a number of our larger customers could have a material adverse effect on our financial condition and results of operations.

During 2013 , QEP Resources, Inc. and Kodiak Oil and Gas Corp. were our largest drilling customers accounting for approximately 18% and 10%, respectively, of our total contract drilling revenues. No other third party customer accounted for 10% or more of our contract drilling revenues. Any of our customers may choose not to use our services and the loss of one or a number of our larger customers could have a material adverse effect on our financial condition and results of operations.

Shortages of completion equipment and services could delay or otherwise adversely affect our oil and natural gas segment’s operations.

In the past several years, the increase in horizontal drilling activity in certain areas has, at times, resulted in shortages in the availability of third party equipment and services required for the completion of wells drilled by our oil and natural gas segment. As a result, we have experienced delays in completing some of our wells. Although we have taken steps to try to reduce the delays associated with these services, we anticipate that these services will remain in high demand for the immediate future and could, at times, delay, restrict, or curtail part of our exploration and development operations, which could in turn harm our results.

Our mid-stream segment depends on certain natural gas producers and pipeline operators for a significant portion of its supply of natural gas and NGLs. The loss of any of these producers could result in a decline in our volumes and revenues.

We rely on certain natural gas producers for a significant portion of our natural gas and NGLs supply. While some of these producers are subject to long-term contracts, we may be unable to negotiate extensions or replacements of these contracts on favorable terms, if at all. The loss of all or even a portion of the natural gas volumes supplied by these producers, as a result of competition or otherwise, could have a material adverse effect on our mid-stream segment unless we were able to acquire comparable volumes from other sources.

The counterparties to our commodity derivative contracts may not be able to perform their obligations to us, which could materially affect our cash flows and results of operations.

To reduce our exposure to adverse fluctuations in the prices of oil and natural gas, we currently, and may in the future, enter into commodity derivative contracts for a significant portion of our forecasted oil, NGLs, and natural gas production. The extent of our commodity price exposure is related largely to the effectiveness and scope of our derivative activities, as well as to the ability of counterparties under our commodity derivative contracts to satisfy their obligations to us. If one or more of our counterparties is unable or unwilling to make required payments to us under our commodity derivative contracts, it could have a material adverse effect on our financial condition and results of operations.

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Reliance on management.

We depend greatly on the efforts of our executive officers and other key employees to manage our operations. The loss or unavailability of any of our executive officers or other key employees could have a material adverse effect on our business.

We are subject to various claims and litigation that could ultimately be resolved against us requiring material future cash payments and/or future material charges against our operating income and materially impairing our financial position.

The nature of our business makes us highly susceptible to claims and litigation. We are subject to various existing legal claims and lawsuits, which could have a material adverse effect on our consolidated financial position, results of operations, or cash flows. Any claims or litigation, even if fully indemnified or insured, could negatively affect our reputation among our customers and the public, and make it more difficult for us to compete effectively or obtain adequate insurance in the future.

Derivatives regulation included in current financial reform legislation could impede our ability to manage business and financial risks by restricting our use of derivative instruments as hedges against fluctuating commodity prices and interest rates.

In July 2010, the Dodd-Frank Wall Street Reform and Consumer Protection Act (the Act) was passed by Congress and signed into law. The Act contains significant derivatives regulation, including a requirement that certain transactions be cleared on exchanges and a requirement to post cash collateral (commonly referred to as “margin”) for such transactions. The Act provides for a potential exception from these clearing and cash collateral requirements for commercial end-users and it includes a number of defined terms that will be used in determining how this exception applies to particular derivative transactions and the parties to those transactions. 

We use crude oil, NGLs, and natural gas derivative instruments with respect to a portion of our expected production in order to reduce commodity price uncertainty and enhance the predictability of cash flows relating to the marketing of our crude oil and natural gas. As commodity prices increase, our derivative liability positions increase; however, none of our current derivative contracts require the posting of margin or similar cash collateral when there are changes in the underlying commodity prices that are referred to in these contracts.

Depending on the rules and definitions adopted by the CFTC, we could be required to post collateral with our dealer counterparties for our commodities derivative transactions. Such a requirement could have a significant impact on our business by reducing our ability to execute derivative transactions to reduce commodity price uncertainty and to protect cash flows. Requirements to post collateral would cause significant liquidity issues by reducing our ability to use cash for investment or other corporate purposes, or would require us to increase our level of debt. In addition, a requirement for our counterparties to post collateral would likely result in additional costs being passed on to us, thereby decreasing the effectiveness of our hedges and our profitability.

Proposed federal and state legislative and regulatory initiatives relating to hydraulic fracturing could result in increased costs and additional operating restrictions or delays.

Hydraulic-fracturing is an essential and common practice in the oil and gas industry used to stimulate production of oil, natural gas, and associated liquids from dense subsurface rock formations. Our oil and natural gas segment routinely apply hydraulic-fracturing techniques to many of our oil and natural gas properties, including our unconventional resource plays in the Granite Wash of Texas and Oklahoma, the Marmaton of Oklahoma, the Wilcox of Texas, and the Mississippian of Kansas. Hydraulic-fracturing involves using water, sand, and certain chemicals to fracture the hydrocarbon-bearing rock formation to allow the flow of hydrocarbons into the wellbore. The process is typically regulated by state oil and natural gas commissions; however, the EPA has asserted federal regulatory authority over certain hydraulic-fracturing activities involving diesel under the Safe Drinking Water Act and has begun the process of drafting guidance documents related to this newly asserted regulatory authority. In addition, legislation has been introduced before Congress, called the Fracturing Responsibility and Awareness of Chemicals Act, to provide for federal regulation of hydraulic-fracturing and to require disclosure of the chemicals used in the hydraulic-fracturing process.

Certain states in which we operate, including Texas, Oklahoma, and Wyoming, have adopted, and other states are considering adopting, regulations that could impose more stringent permitting, public disclosure, waste disposal, and well construction requirements on hydraulic-fracturing operations or otherwise seek to ban fracturing activities altogether. For example, Texas adopted a law in June 2011 requiring disclosure to the Railroad Commission of Texas (RCT) and the public of

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certain information regarding the components used in the hydraulic-fracturing process. In addition to state laws, local land use restrictions, such as city ordinances, may restrict or prohibit the performance of well drilling in general and/or hydraulic fracturing in particular. In the event state, local, or municipal legal restrictions are adopted in areas where we are currently conducting, or in the future plan to conduct operations, we may incur additional costs to comply with such requirements that may be significant in nature, experience delays or curtailment in the pursuit of exploration, development, or production activities, and perhaps even be precluded from the drilling and/or completion of wells.

There are certain governmental reviews either underway or being proposed that focus on environmental aspects of hydraulic-fracturing practices. The White House Council on Environmental Quality is coordinating a review of hydraulic-fracturing practices, and a committee of the United States House of Representatives has conducted an investigation of hydraulic-fracturing practices. Furthermore, a number of federal agencies are analyzing, or have been requested to review, a variety of environmental issues associated with hydraulic fracturing. The EPA has commenced a study of the potential environmental effects of hydraulic fracturing on drinking water and groundwater. In addition, the U.S. Department of Energy is conducting an investigation into practices the agency could recommend to better protect the environment from drilling using hydraulic-fracturing completion methods.

Additionally, certain members of the Congress have called upon the U.S. Government Accountability Office to investigate how hydraulic fracturing might adversely affect water resources, the U.S. Securities and Exchange Commission to investigate the natural gas industry and any possible misleading of investors or the public regarding the economic feasibility of pursuing natural gas deposits in shales by means of hydraulic fracturing, and the U.S. Energy Information Administration to provide a better understanding of that agency’s estimates regarding natural gas reserves, including reserves from shale formations, as well as uncertainties associated with those estimates. These ongoing or proposed studies, depending on their course and results obtained, could spur initiatives to further regulate hydraulic fracturing under the Safe Drinking Water Act or other regulatory processes.

Further, after reviewing extensive comments and making a number of changes to its previously July 28, 2011 proposed rules, on April 17, 2012 the EPA issued its final rules that subject a wide range of oil and gas operations (production, processing, transmission, storage, and distribution) to regulation under the New Source Performance Standards (NSPS) and National Emission Standards for Hazardous Air Pollutants (NESHAPS) programs (with the NSPS and NESHAPS published in the Federal Register on August 16, 2012). The EPA revised the NSPS for volatile organic compounds (VOCs) from leaking components at onshore gas processing plants and the NSPS for sulfur dioxide emissions from natural gas processing plants. The EPA also established standards for certain oil and gas operations not covered by existing standards, which will regulate VOC emissions from gas wells, centrifugal and reciprocating compressors, pneumatic controllers, and storage vessels over a certain size. The EPA also made revisions to the existing leak detection and repair requirements for the oil and gas production source category and the natural gas transmission source category and established action limits reflecting most achievable control for certain previously uncontrolled emission sources. There also are additional testing and related notification, record keeping and reporting requirements. These changes were effective October 15, 2012.

Increased regulation and attention given to the hydraulic fracturing process could lead to greater opposition, including litigation, to oil and gas production activities using hydraulic fracturing techniques. Additional legislation or regulation could also lead to operational delays or increased operating costs in the production of oil, natural gas, and associated liquids including from the development of shale plays, or could make it more difficult to perform hydraulic fracturing. The adoption of additional federal, state or local laws or the implementation of regulations regarding hydraulic fracturing could potentially cause a decrease in the completion of new oil and gas wells, increased compliance costs and time, which could adversely affect our financial position, results of operations, and cash flows.

On October 20, 2011, EPA announced a schedule for development of standards for disposal of wastewater produced from shale gas operations to publicly owned treatment works (POTWs). The regulations will be developed under EPA’s Effluent Guidelines Program under the authority of the Clean Water Act. EPA anticipates issuing the proposed rules in 2014.

Our ability to produce crude oil, natural gas, and associated liquids economically and in commercial quantities could be impaired if we are unable to acquire adequate supplies of water for our drilling operations and/or completions or are unable to dispose of or recycle the water we use at a reasonable cost and in accordance with applicable environmental rules.

To our knowledge, there have been no citations, suits, or contamination of potable drinking water arising from our fracturing operations. We do not have insurance policies in effect that are intended to provide coverage for losses solely related to hydraulic fracturing operations; however, it is possible that our general liability and excess liability insurance policies might

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cover third-party claims related to hydraulic fracturing operations and associated legal expenses depending on the specific nature of the claims, the timing of the claims, as well as the specific terms of such policies.

The hydraulic fracturing process on which we depend to produce commercial quantities of crude oil, natural gas, and associated NGLs from many reservoirs requires the use and disposal of significant quantities of water.

Our inability to secure sufficient amounts of water, or to dispose of or recycle the water used in our oil and natural gas segment operations, could adversely impact our operations. Moreover, the imposition of new environmental initiatives and regulations could include restrictions on our ability to conduct certain operations such as hydraulic fracturing or disposal of wastes, including, but not limited to, produced water, drilling fluids, and other wastes associated with the exploration, development or production of oil and natural gas.

Compliance with environmental regulations and permit requirements governing the withdrawal, storage and, use of surface water or groundwater necessary for hydraulic fracturing of wells may increase our operating costs and cause delays, interruptions, or termination of our operations, the extent of which cannot be predicted, all of which could have an adverse effect on our operations and financial condition.

We may decide not to drill some of the prospects we have identified, and locations that we do drill may not yield oil, NGLs, and natural gas in commercially viable quantities.

Our oil and natural gas segment's prospective drilling locations are in various stages of evaluation, ranging from a prospect that is ready to drill to a prospect that will require additional geological and engineering analysis. Based on a variety of factors, including future oil, NGLs, natural gas prices, the generation of additional seismic or geological information, and other factors, we may decide not to drill one or more of these prospects. As a result, we may not be able to increase or maintain our reserves or production, which in turn could have an adverse effect on our business, financial position, and results of operations. In addition, the SEC's reserve reporting rules include a general requirement that, subject to limited exceptions, proved undeveloped reserves may only be booked if they relate to wells scheduled to be drilled within five years of the date of booking. At December 31, 2013, we had 180 proved undeveloped drilling locations. To the extent that we do not drill these locations within five years of initial booking, they may not continue to qualify for classification as proved reserves, and we may be required to reclassify such reserves as unproved reserves. The reclassification of those reserves could also have a negative effect on the borrowing base under our credit facility.

The cost of drilling, completing, and operating a well is often uncertain, and cost factors can adversely affect the economics of a well. Our efforts will be uneconomic if we drill dry holes or wells that are productive but do not produce enough oil, NGLs, and natural gas to be commercially viable after drilling, operating, and other costs.

The borrowing base under our credit agreement is determined semi-annually at the discretion of the lenders and is based in a large part on the prices for oil, NGLs, and natural gas.

Significant declines in oil, NGLs, and natural gas prices may result in a decrease in our borrowing base. The lenders can unilaterally adjust the borrowing base and therefore the borrowings permitted to be outstanding under our credit agreement. If outstanding borrowings are in excess of the borrowing base, we must (a) repay the loan in excess of the borrowing base, (b) dedicate additional properties to the borrowing base, or (c) begin monthly principal payments in accordance with our credit agreement.

Potential listing of species as “endangered” under the federal Endangered Species Act could result in increased costs and new operating restrictions or delays on our operations and that of our customers, which could adversely affect our operations and financial results.

The federal Endangered Species Act, referred to as the “ESA,” and analogous state laws regulate a variety of activities, including oil and gas development, which could have an adverse effect on species listed as threatened or endangered under the ESA or their habitats. The designation of previously unidentified endangered or threatened species could cause oil and natural gas exploration and production operators and service companies to incur additional costs or become subject to operating delays, restrictions or bans in affected areas, which impacts could adversely reduce the amount of drilling activities in affected areas. All three of our business segments could be subject to the effect of one or more species being listed as threatened or endangered within the areas of our operations. Numerous species have been listed or proposed for protected status in areas in which we provide or could in the future undertake operations. For instance, the American Burying Beetle and the Lesser Prairie-Chicken both have habitat in some areas where we operate or provide services. The FWS initiated the process to list the Lesser Prairie-

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Chicken as threatened in November 2012, with a decision expected in March 2014. The sage grouse and certain wildflower species, among others, are also species that have been or are being considered for protected status under the ESA and whose range can coincide with oil and natural gas production activities. The presence of protected species in areas where we provide contract drilling or mid-stream services or conduct exploration and production operations could impair our ability to timely complete or carry out those services and, consequently, adversely affect our results of operations and financial position.

Our new drilling rig program to design and build new proprietary BOSS drilling rigs is subject to risks, including delays and cost overruns, and may not meet our expectations.

We have launched a new drilling rig program to design and build new proprietary 1,500 horsepower AC electric drilling rigs, which we refer to as BOSS drilling rigs.  We anticipate that this new drilling rig will position us to more effectively meet the demands of our existing customers,  result in additional new-build contract opportunities and allow us to compete for the work of new customers.  The construction of new BOSS drilling rigs is subject to the risks of delays or cost overruns inherent in any large construction project as a result of numerous factors, including the following:

• shortages of equipment, materials or skilled labor;

• work stoppages and labor disputes;

• unscheduled delays in the delivery of ordered materials and equipment;

• unanticipated increases in the cost of equipment, labor and raw materials used in construction of our rigs, particularly steel;

• weather interferences;

• difficulties in obtaining necessary permits or in meeting permit conditions;

• unforeseen design and engineering problems;

• failure or delay in obtaining acceptance of the rig from our customer; and

• failure or delay of third party equipment vendors or service providers.

As we design and build new BOSS drilling rigs, there can be no assurance that we will:

• obtain additional new-build contract opportunities;

• successfully integrate the new rigs with our existing drilling fleet;

• successfully deploy the new rigs; or

• successfully improve our financial condition, results of operations or prospects as a result of the new rigs.

Cyber attacks targeting systems and infrastructure used by the oil and gas industry may adversely impact our operations.

Our business has become increasingly dependent on digital technologies to conduct certain exploration, development and production activities. We depend on digital technology to estimate quantities of natural gas, oil and NGL reserves, process and record financial and operating data, analyze seismic and drilling information, and communicate with our employees and third-party partners. Although we utilize various procedures and controls to mitigate our exposure to such risk, cyber attacks are evolving and unpredictable. These attacks could include, but are not limited to, malicious software, attempts to gain unauthorized access to data, other electronic security breaches that could lead to disruptions in critical systems, the unauthorized release of protected information and the corruption or loss of data.  The occurrence of such an attack could lead to financial losses and have a negative impact on our results of operations. We are not aware that any such breaches have occurred to date.

Item 1B. Unresolved Staff Comments

None.

Item 2.     Properties

The information called for by this item was consolidated with and disclosed in connection with Item 1 above.

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Item 3.     Legal Proceedings

Panola Independent School District No. 4, et al. v. Unit Petroleum Company, No. CJ-07-215, District Court of Latimer County, Oklahoma.

Panola Independent School District No. 4, Michael Kilpatrick, Gwen Grego, Carla Lessel, Thelma Christine Pate, Juanita Golightly, Melody Culberson and Charlotte Abernathy are the Plaintiffs in this case and are royalty owners in oil and gas drilling and spacing units for which the our exploration segment distributes royalty. The Plaintiffs' central allegation is that our exploration segment has underpaid royalty obligations by deducting post-production costs or marketing related fees. Plaintiffs sought to pursue the case as a class action on behalf of persons who receive royalty from us for our Oklahoma production. We have asserted several defenses including that the deductions are permitted under Oklahoma law. We also asserted that the case should not be tried as a class action due to the materially different circumstances that determine what, if any, deductions are taken for each lease. On December 16, 2009, the trial court entered its order certifying the class. On May 11, 2012, the Court of Civil Appeals reversed the trial court's order certifying the class. The Plaintiffs petitioned the Oklahoma Supreme Court for certiorari and on October 8, 2012, the Plaintiff's petition was denied. The Plaintiffs filed a second request in 2013 to certify a class of royalty owners that is slightly smaller than their first attempt. We will continue to resist certification using the defenses described above, as well as new defenses based on the Court of Civil Appeals' decertification of the Plaintiffs' original class action. The merits of Plaintiffs' claims will remain stayed while class certification issues are pending.

Item 4.     Mine Safety Disclosures

Not applicable.

PART II

Item 5.     Market for the Registrant’s Common Equity, Related Stockholder Matters, and Issuer Purchases of Equity Securities

Our common stock trades on the New York Stock Exchange under the symbol “UNT.” The following table identifies the high and low sales prices per share of our common stock for the periods indicated:

	2013				2012
Quarter	High		Low		High		Low
First	$	49.68	$	43.75	$	50.82	$	41.53
Second	$	47.45	$	40.51	$	43.83	$	32.14
Third	$	47.49	$	42.50	$	46.27	$	34.59
Fourth	$	52.81	$	46.34	$	46.97	$	39.73

On February 14, 2014, the closing sale price of our common stock, as reported by the NYSE, was $52.57 per share. On that date, there were approximately 870 holders of record of our common stock.

We have never declared any cash dividends on our common stock. Any future determination by our board of directors to pay dividends on our common stock will be made only after considering our financial condition, results of operations, capital requirements and other relevant factors. Additionally, our bank credit agreement and the Notes prohibit the payment of cash dividends on our common stock under certain circumstances. For further information regarding our bank credit agreement and the Notes agreement’s impact on our ability to pay dividends see “Our Credit Agreement and Senior Subordinated Notes” under Item 7 of this report.

Performance Graph.    The following graph and related information shall not be deemed “soliciting material” or be deemed to be “filed” with the SEC, nor shall such information be incorporated by reference into any future filing, except to the extent that we specifically incorporate it by reference into such filing.

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Set forth below is a line graph comparing our cumulative total shareholder return on our common stock with the cumulative total return of the S&P 500 Stock Index, S&P 600 Oil and Gas Exploration & Production and our peer group which includes Helmerich & Payne, Inc., Patterson – UTI Energy Inc. and Pioneer Energy Services Corp. The graph below assumes an investment of $100 at the beginning of the period. The shareholder return set forth below is not necessarily indicative of future performance.

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Item 6.     Selected Financial Data

The following table shows selected consolidated financial data. The data should be read in conjunction with Item 7 “Management’s Discussion and Analysis of Financial Condition and Results of Operations,” for a review of 2013, 2012, and 2011 activity.

	As of and for the Year Ended December 31,
	2013		2012			2011		2010		2009
	(In thousands except per share amounts)
Revenues(1)	$	1,351,850	$	1,315,123		$	1,207,503	$	870,671	$	707,188
Net income (loss)	$	184,746	$	23,176	(2)	$	195,867	$	146,484	$	(55,500	)	(3)
Net income (loss) per common share:
Basic	$	3.83	$	0.48		$	4.11	$	3.10	$	(1.18	)
Diluted	$	3.80	$	0.48		$	4.08	$	3.09	$	(1.18	)
Total assets	$	4,022,390	$	3,761,120		$	3,256,720	$	2,669,240	$	2,228,399
Long-term debt (4)	$	645,696	$	716,359		$	300,000	$	163,000	$	30,000
Other long-term liabilities	$	158,331	$	167,545		$	113,830	$	92,389	$	81,126
Cash dividends per common share	$	—	$	—		$	—	$	—	$	—

_________________________ 

(1) During the third quarter of 2012, we made the decision to prospectively use mark-to-market accounting for our economic hedges. Previously, we reported all gains (losses) in oil and natural gas revenues and now we reflect gains (losses) on non-designated hedges and the ineffectiveness from cash flow hedges along with other revenue items in other income (expense) below income from operations. Prior year amounts have been reclassified to conform to current year presentation.

(2) In June 2012 and December 2012, due to low 12-month average commodity prices, we incurred non-cash ceiling test write downs of our oil and natural gas properties of $115.9 million pre-tax ($72.1 million net of tax) and $167.7 million pre-tax ($104.4 million net of tax), respectively.

(3) In March 2009, we incurred a non-cash ceiling test write down of our oil and natural gas properties of $281.2 million pre-tax ($175.1 million net of tax) due to low commodity prices at quarter-end.

(4) Long-term debt is net of unamortized discount.

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Item 7.     Management’s Discussion and Analysis of Financial Condition and Results of Operations

Please read the following discussion of our financial condition and results of operations in conjunction with the consolidated financial statements and related notes included in Item 8 of this report.

General

We operate, manage, and analyze our results of operations through our three principal business segments:

• Oil and Natural Gas – carried out by our subsidiary Unit Petroleum Company. This segment explores, develops, acquires, and produces oil and natural gas properties for our own account.

• Contract Drilling – carried out by our subsidiary Unit Drilling Company and its subsidiaries. This segment contracts to drill onshore oil and natural gas wells for others and for our own account.

• Mid-Stream – carried out by our subsidiary Superior Pipeline Company, L.L.C. and its subsidiaries. This segment buys, sells, gathers, processes, and treats natural gas for third parties and for our own account.

Business Outlook

Our current 2014 capital budget for all of our business segments forecasts a 33%increase over our 2013 capital expenditures, excluding acquisitions. Our oil and natural gas segment’s capital budget is $718.0 million, a 31%increase over 2013, excluding acquisitions and ARO liability. Our drilling segment’s capital budget is $132.0 million, a 105%increase over 2013. Our plans for 2014 include focusing on our new drilling rig program, a program we launched to design and build a new proprietary 1,500 horsepower AC electric drilling rig, called the BOSS rig. We also plan to refurbish and upgrade several of our existing drilling rigs in order that those drilling rigs can be used in horizontal drilling operations. Our mid-stream segment’s capital budget is $78.0 million, a 19%decrease from 2013, excluding acquisitions. New and continued projects are discussed further in the Executive Summary.

Our 2014 current capital expenditures budget is based on realized prices for the year of $90.08 per barrel of oil, $29.45 per barrel of NGLs, and $3.77 per Mcf of natural gas. This budget is subject to possible periodic adjustments for various reasons including changes in commodity prices and industry conditions. Funding for the budget will come primarily from internally generated cash flow and, if necessary, borrowings under our credit agreement.

As discussed in other parts of this report, the success of our consolidated business, as well as that of each of our three operating segments depends, to a large extent, on: the prices we receive for our oil, NGLs, and natural gas production; the demand for oil, NGLs, and natural gas; and the demand for our drilling rigs which, in turn, influences the amounts we can charge for the use of those drilling rigs. Although all of our current operations (with the exception of a minor amount of production in Canada) are located within the United States, events outside the United States can and do have an impact on us and our industry.

In addition to their direct impact on us, low commodity prices–if sustained for a long period of time–could impact the liquidity of some of our industry partners and customers which, in turn, could limit their ability to meet their financial obligations to us.

Executive Summary

Oil and Natural Gas

Fourth quarter 2013 production from our oil and natural gas segment was 4,438,000 barrels of oil equivalent (Boe), a 5%increase over the third quarter of 2013 and an 8%increase over the fourth quarter of 2012. These increases came primarily from production associated with new wells. Oil and NGLs production during the fourth quarter of 2013 was 46% of our total production compared to 41% of our total production during the fourth quarter of 2012.

Fourth quarter 2013 oil and natural gas revenues increased 11% over the third quarter of 2013 and increased 5% over the fourth quarter of 2012. These increases were primarily due to increases in production.

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Our NGLs and natural gas prices for the fourth quarter of 2013 increased 21% and 3%, respectively, over the third quarter of 2013 while our oil prices decreased 1%. Our oil prices increased 3% over the fourth quarter of 2012 while NGLs prices were essentially unchanged and natural gas prices decreased 12%.

Direct profit (oil and natural gas revenues less oil and natural gas operating expense) increased 20% over the third quarter of 2013 and 6% over the fourth quarter of 2012. The increases were primarily attributable to increased production from developmental drilling and acquisitions.

Operating cost per Boe produced for the fourth quarter of 2013decreased 13% from the third quarter of 2013 and decreased 6% from the fourth quarter of 2012. The decrease from the third quarter of 2013 was primarily due to decreased lease operating expenses (LOE) due to decreased workover expense and lower gross production tax resulting from credits received. These decreases were somewhat offset by higher saltwater disposal expenses. The decrease from the fourth quarter of 2012 was primarily due to a decrease in well servicing and transportation charges and a decrease in production taxes due to tax credits.

For 2013 we hedged approximately 90% of our average daily oil production and approximately 65% of our average natural gas production to help manage our cash flow and capital expenditure requirements.

Currently for 2014 we have hedged approximately 7,250 Bbls per day of oil production and 90,000 Mmbtu per day of natural gas production. The oil production is hedged by swap contracts for 3,250 Bbls per day and collars for 4,000 Bbls per day. The swap transactions were done at a comparable average NYMEX prices of $92.35. The collar transactions were done at a comparable average NYMEX floor price of $90.00 and ceiling price of $96.08. The natural gas production is hedged by swaps for 80,000 Mmbtu per day and a collar for 10,000 Mmbtu per day. The swap transactions were done at a comparable average NYMEX price of $4.24. The collar transaction was done at a comparable average NYMEX floor price of $3.75 and ceiling price of $4.37. Additionally, we have hedged our March 2014 natural gas basis exposure with basis swaps at an average price of -$0.05.

In August 2013, we sold some of our Bakken oil and gas properties. The proceeds, net of related expenses, were $57.1 million. In addition, we had other non-core asset sales with proceeds, net of related expenses, of $21.7 million for 2013. Proceeds from these dispositions reduced the net book value of the full cost pool with no gain or loss recognized.

During 2013, we drilled 149 wells (91.14 net wells). For 2014, we plan to participate in the drilling of approximately 180 wells. Our 2014 production guidance is approximately 19.2 to 19.7 MMBoe, an increase of 15% to 18% over 2013, although actual results will continue to be subject to many factors. This segment’s capital budget for 2014 is $718.0 million, a 31%increase over 2013, excluding acquisitions and ARO liability.

Contract Drilling

The rate at which our drilling rigs were used (“our utilization rate”) for the fourth quarter 2013 was 53%, compared to 51% and 50% for the third quarter of 2013 and the fourth quarter of 2012, respectively.

Dayrates for the fourth quarter of 2013 averaged $19,630, a 1%decrease from both the third quarter of 2013 and the fourth quarter of 2012. The decreases were primarily due to the expiration of certain contracts during 2013 that had higher rates.

Direct profit (contract drilling revenue less contract drilling operating expense) for the fourth quarter of 2013increased 3% over the third quarter of 2013 and was essentially unchanged from the fourth quarter of 2012. For both comparative periods utilization slightly increased.

Operating cost per day for the fourth quarter of 2013decreased 3% from the third quarter of 2013 and 13% from the fourth quarter of 2012. The decreases were primarily due to decreases in direct rig expenses and workers' compensation related costs.

Today, almost all of our working drilling rigs are drilling horizontal or directional wells for oil and NGLs. Part of this shift included operators moving to shallower oil plays like the Mississippian play in northern Oklahoma and southern Kansas. These shallower plays tend to use drilling rigs with lower horsepower which have lower dayrates and margins.  As methods for drilling horizontal wells have improved, demand to drill deeper and longer horizontal wells has once again strengthened demand for higher horsepower rigs. All of these factors ultimately affect the demand and mix of the type of drilling rigs used by our customers.

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As of December 31, 2013, we had 23 term drilling contracts with original terms ranging from six months to three years. Twenty-two of these contracts are up for renewal in 2014, seven in the first quarter, ten in the second quarter, and five in the fourth quarter and one is up for renewal in 2015. Term contracts may contain a fixed rate for the duration of the contract or provide for rate adjustments within a specific range from the existing rate.

In the second quarter of 2013, we sold one of our 2,000 horsepower electric drilling rigs. During the third and fourth quarters of 2013, we sold three additional 2,000 horsepower and one 3,000 horsepower electric drilling rigs. All of these sales were to unaffiliated third-parties. Four additional idle 3,000 horsepower drilling rigs were sold to an unaffiliated third party in the first quarter of 2014 all of which were classified as assets held for sale at December 31, 2013. The proceeds from these various sales will be used in our new drilling rig program we launched to design and build a new proprietary 1,500 horsepower, AC electric drilling rig, called the BOSS rig. We anticipate the BOSS drilling rig will position us to more effectively meet the demands of our existing customers as well as allowing us to compete for the work of new customers.

Our anticipated 2014 capital expenditures for this segment are $132.0 million, a 105%increase over 2013. The first BOSS drilling rig will be operational the first quarter of 2014 and will work initially for our oil and natural gas segment. Two additional BOSS drilling rigs are contracted to third party operators and are anticipated to be placed into service in the second and third quarters of 2014.

Mid-Stream

Fourth quarter 2013 liquids sold per day increased 12% over the third quarter of 2013 and increased 49% over the fourth quarter of 2012. During the third quarter 2012, one of our producers completed construction of their own processing plant and moved their volumes off our system resulting in decreases in liquids sold, gas gathered, and gas processed. In addition, during the fourth quarter of 2012, certain processing plants were rejecting ethane due to weak ethane prices. For the fourth quarter of 2013, gas processed per day increased 3% over the third quarter of 2013 and increased 13% over the fourth quarter of 2012. We upgraded several of our existing processing facilities and added processing plants which was the primary reason for increased volumes. For the fourth quarter of 2013, gas gathered per day decreased 4% from the third quarter of 2013 and increased 12% over the fourth quarter of 2012. The decrease during the fourth quarter of 2013 was primarily due to the transfer of one system to the oil and natural gas segment. The increase over the fourth quarter of 2012 was primarily from well connects throughout 2013.

NGLs prices in the fourth quarter of 2013increased 1% over the prices received in both the third quarter of 2013 and the fourth quarter of 2012. Because certain of the contracts used by our mid-stream segment for NGLs transactions are percent of proceeds (POP) contracts – under which we receive a share of the proceeds from the sale of the NGLs– our revenues from those POP contracts fluctuate based on the prices of NGLs.

Direct profit (mid-stream revenues less mid-stream operating expense) for the fourth quarter of 2013decreased 4% from the third quarter of 2013 and increased 89% over the fourth quarter of 2012. The decrease from the third quarter of 2013 was primarily due to higher costs associated with gas purchased and the increase over the fourth quarter of 2012 was primarily due to increased revenues from gas liquids sold. Total operating cost for our this segment for the fourth quarter of 2013increased 13% over the third quarter of 2013 and increased 40% over the fourth quarter of 2012 due primarily to the cost of gas purchased.

After relocating two processing plants from our Hemphill County, Texas facility to our new Reno County, Kansas facility, we now have the capacity to process 135 MMcf per day of our own and third party Granite Wash natural gas production at our Hemphill facility. We completed two pipeline extension projects for a total cost of approximately $5.7 million in the fourth quarter of 2013. These extensions will connect additional production from our oil and natural gas segment to this system.

We have completed construction of a new gathering and processing facility in Reno County, Kansas. This new system consists of approximately 20 miles of gathering pipeline and two processing plants that were relocated from our Hemphill facility which included a five MMcf per day refrigerated JT plant skid and a 20 MMcf per day turbo expander plant skid. Both plant skids are installed and operational. We began gathering gas at this facility during the second quarter of 2013 and processing gas in the third quarter of 2013.

At our Cashion facility located in central Oklahoma, we completed the extension of our gathering system approximately three miles at a capital cost of $2.8 million. This extension will allow us to gather additional production from active producers

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in the area. We installed a new 25 MMcf per day high efficiency turbo-expander processing plant at this facility that became operational in March 2012. With the installation of this additional plant, our total processing capacity increased to approximately 45 MMcf per day at our Cashion facility.

At our Perkins facility located in central Oklahoma, we completed the installation and upgrade of an 8 MMcf per day processing skid which became operational in the first quarter of 2013. With this new plant skid operational, our total processing capacity is now 18 MMcf per day.

In the Mississippian play in north central Oklahoma, our Bellmon system consists of approximately 185 miles of pipeline, which includes a 26-mile extension to connect our existing Remington facility, a 20-mile NGL line and two owned natural gas processing plants. In the first quarter of 2013, we completed the installation of an owned 30 MMcf per day cryogenic processing plant, which allowed us to take out of service the original rental processing plant. After this owned processing plant was installed and operational, our total processing capacity at this facility was 55 MMcf per day including the original rental processing plant. Due to anticipated increased volumes, we also completed the installation of a new 60 MMcf per day processing plant in the first quarter of 2014. With both of these owned processing plants operational we will have capacity to process 90 MMcf per day at this facility.

In the Appalachian region, in the fourth quarter of 2012, construction was completed on the first phase of our Pittsburgh Mills gathering facility in Allegheny and Butler Counties, Pennsylvania.  The first phase of this project consists of approximately 14 miles of gathering pipeline. In the first quarter of 2013, the related compressor station was completed and operational. We currently have 19 wells connected to this gathering system with plans to continue to add wells as they are drilled. Preliminary activity is underway for the planned expansion of this pipeline into Butler County, Pennsylvania.  Right of way has been acquired and construction is scheduled to begin in the second quarter of 2014. This expansion is expected to be completed by the end of 2014. We completed the construction of the Brookfield gathering system, a new gathering system in north central Pennsylvania. It became operational in the second quarter of 2013.

In December 2012, we had a $1.2 million write-down of our Erick system. There was no volume from the wells connected to this system, the compressor and related surface equipment have been removed from this location and there is no future activity anticipated from this gathering system.

Anticipated 2014 capital expenditures for this segment are $78.0 million, a 19%decrease from 2013, excluding acquisitions.

Critical Accounting Policies and Estimates

Summary

In this section, we identify those critical accounting policies we follow in preparing our financial statements and related disclosures. Many of these policies require us to make difficult, subjective, and complex judgments in the course of making estimates of matters that are inherently imprecise. Some accounting policies involve judgments and uncertainties to such an extent that there is reasonable likelihood that materially different amounts could have been reported under different conditions, or if different assumptions had been used. We evaluate our estimates and assumptions on a regular basis. We base our estimates on historical experience and various other assumptions that we believe are reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates and assumptions used in preparation of our financial statements. In the following discussion we will attempt to explain the nature of these estimates, assumptions and judgments, as well as the likelihood that materially different amounts would be reported in our financial statements under different conditions or using different assumptions.

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The following table lists the critical accounting policies, estimates and assumptions that can have a significant impact on the application of these accounting policies, and the financial statement accounts affected by these estimates and assumptions.

Accounting Policies	Estimates or Assumptions	Accounts Affected
Full cost method of accounting for oil, NGLs, and natural gas properties	•    Oil, NGLs, and natural gas reserves, estimates, and related present value of future net revenues •    Valuation of unproved properties •    Estimates of future development costs •    Derivatives measured at fair value	•    Oil and natural gas properties •    Accumulated depletion, depreciation and amortization •    Provision for depletion, depreciation and amortization •    Impairment of oil and natural gas properties •    Long-term debt and interest expense
Accounting for ARO for oil, NGLs, and natural gas properties	•    Cost estimates related to the plugging and abandonment of wells •    Timing of cost incurred	•    Oil and natural gas properties •    Accumulated depletion, depreciation and amortization •    Provision for depletion, depreciation and amortization •    Current and non-current liabilities •    Operating expense
Accounting for impairment of long-lived assets	•    Forecast of undiscounted estimated future net operating cash flows	•    Drilling and mid-stream property and equipment •    Accumulated depletion, depreciation and amortization •    Provision for depletion, depreciation and amortization •    Other intangible assets
Goodwill	•    Forecast of discounted estimated future net operating cash flows •    Terminal value •    Weighted average cost of capital	•    Goodwill
Turnkey and footage drilling contracts	•    Estimates of costs to complete turnkey and footage contracts	•    Revenue and operating expense •    Current assets and liabilities
Accounting for value of stock compensation awards	•    Estimates of stock volatility •    Estimates of expected life of awards granted •    Estimates of rates of forfeitures	•    Oil and natural gas properties •    Shareholder’s equity •    Operating expenses •    General and administrative expenses
Accounting for derivative instruments and hedging	•    Hedges measured for effectiveness and ineffectiveness •    Non-qualifying and qualifying derivatives measured at fair value	•    Current and non-current derivative assets and liabilities •    Other comprehensive income as a component of equity •    Oil and natural gas revenue •    Gain (loss) on derivatives not designated as hedges and hedge ineffectiveness, net

Significant Estimates and Assumptions

Full Cost Method of Accounting for Oil, NGLs, and Natural Gas Properties.    The determination of our oil, NGLs, and natural gas reserves is a subjective process. It entails estimating underground accumulations of oil, NGLs, and natural gas that cannot be measured in an exact manner. The degree of accuracy of these estimates depends on a number of factors, including, the quality and availability of geological and engineering data, the precision of the interpretations of that data, and individual

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judgments. Each year, we hire an independent petroleum engineering firm to audit our internal evaluation of our reserves. The audit of our reserve wells or locations as of December 31, 2013 included those we projected that comprised 84% of the total proved developed discounted future net income and 91% of the total proved undeveloped discounted future net income based on the unescalated pricing policy of the SEC. Included in Part I, Item 1 of this report are the qualifications of our independent petroleum engineering firm and our personnel responsible for the preparation of our reserve reports.

As a general rule, the degree of accuracy of estimating oil, NGLs, and natural gas reserves varies with the reserve classification and the related accumulation of available data, as shown in the following table:

Type of Reserves	Nature of Available Data	Degree of Accuracy
Proved undeveloped	Data from offsetting wells, seismic data	Less accurate
Proved developed non-producing	The above as well as logs, core samples, well tests, pressure data	More accurate
Proved developed producing	The above as well as production history, pressure data over time	Most accurate

Assumptions as to future oil, NGLs, and natural gas prices and operating and capital costs also play a significant role in estimating oil, NGLs, and natural gas reserves and the estimated present value of the cash flows to be received from the future production of those reserves. Volumes of recoverable reserves are influenced by the assumed prices and costs due to what is known as the economic limit (that point when the projected costs and expenses of producing recoverable oil, NGLs, and natural gas reserves is greater than the projected revenues from the oil, NGLs, and natural gas reserves). But more significantly, the estimated present value of the future cash flows from our oil, NGLs, and natural gas reserves is extremely sensitive to prices and costs, and may vary materially based on different assumptions. Companies, like ours, using full cost accounting use the unweighted arithmetic average of the commodity prices existing on the first day of each of the 12 months before the end of the reporting period to calculate discounted future revenues, unless prices were otherwise determined under contractual arrangements.

We compute our provision for DD&A on a units-of-production method. Each quarter, we use the following formulas to compute the provision for DD&A for our producing properties:

• DD&A Rate = Unamortized Cost / End of Period Reserves Adjusted for Current Period Production

• Provision for DD&A = DD&A Rate x Current Period Production

Oil, NGLs, and natural gas reserve estimates have a significant impact on our DD&A rate. If reserve estimates for a property or group of properties are revised downward in the future, the DD&A rate will increase as a result of the revision. Alternatively, if reserve estimates are revised upward, the DD&A rate will decrease. Based on our 2013 production level of 16.7 MMBoe, a decrease in the amount of our 2013 oil, NGLs, and natural gas reserves by 5% would increase our DD&A rate by $0.72 per Boe and would decrease pre-tax income by $12.0 million annually. Conversely, an increase in our 2013 oil, NGLs, and natural gas reserves by 5% would decrease our DD&A rate by $0.66 per Boe and would increase pre-tax income by $11.0 million annually.

Our DD&A expense on our oil and natural gas properties is calculated each quarter using period end reserve quantities adjusted for current period production.

As noted, we account for our oil and natural gas exploration and development activities using the full cost method of accounting. Under this method, all costs incurred in the acquisition, exploration, and development of oil and natural gas properties are capitalized. At the end of each quarter, the net capitalized costs of our oil and natural gas properties are limited to the lower of unamortized cost or a ceiling. The ceiling is defined as the sum of the present value (using a 10% discount rate) of the estimated future net revenues from our proved reserves based on the unescalated 12-month average price on our oil, NGLs, and natural gas adjusted for any cash flow hedges, plus the cost of properties not being amortized, plus the lower of cost or estimated fair value of unproved properties included in the costs being amortized, less related income taxes. If the net capitalized costs of our oil and natural gas properties exceed the ceiling, we are required to write-down the excess amount. A ceiling test write-down is a non-cash charge to earnings. If required, it reduces earnings and impacts shareholders’ equity in the period of occurrence and results in lower DD&A expense in future periods. Once incurred, a write-down cannot be reversed.

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The risk that we will be required to write-down the carrying value of our oil and natural gas properties increases when oil, NGLs, and natural gas prices are depressed or if we have large downward revisions in our estimated proved oil, NGLs, and natural gas reserves. Application of these rules during periods of relatively low prices, even if temporary, increases the chance of a ceiling test write-down. Based on the application of 12-month 2013 average unescalated prices of $96.94 per barrel of oil, $41.03 per barrel of NGLs, and $3.67 per Mcf of natural gas, then adjusted for price differentials, for the estimated life of the respective properties, the unamortized cost of our oil and natural gas properties did not exceed the ceiling of our proved oil, NGLs, and natural gas reserves. If there are declines in the 12-month average prices, we may be required to record a write-down in future periods.

Derivative instruments qualifying as cash flow hedges are included in the computation of limitation on capitalized costs. Our cash flow hedges expired as of December 31, 2013 and no longer effect this computation. Our oil and natural gas hedging is discussed in Note 13 of the Notes to our Consolidated Financial Statements.

We use the sales method for recording natural gas sales. This method allows for the recognition of revenue, which may be more or less than our share of pro-rata production from certain wells. Our policy is to expense our pro-rata share of lease operating costs from all wells as incurred. The expenses relating to the wells in which we have an imbalance are not material.

Accounting for ARO for Oil, NGLs, and Natural Gas Properties.    We record the fair value of liabilities associated with the retirement of assets having a long life. In our case, when the reserves in each of our oil or gas wells deplete or otherwise become uneconomical, we are required to incur costs to plug and abandon the wells. These costs are recorded in the period in which the liability is incurred (at the time the wells are drilled or acquired). We do not have any assets restricted for the purpose of settling these ARO liabilities. Our engineering staff uses historical experience to determine the estimated plugging costs taking into account the type of well (either oil or natural gas), the depth of the well and physical location of the well to determine the estimated plugging costs.

Accounting for Impairment of Long-Lived Assets.    Drilling equipment, transportation equipment, gas gathering and processing systems, and other property and equipment are carried at cost less accumulated depreciation. Renewals and enhancements are capitalized while repairs and maintenance are expensed. Realization of the carrying value of property and equipment is reviewed for possible impairment whenever events or changes in circumstances suggest that these carrying amounts may not be recoverable. Assets are determined to be impaired if a forecast of undiscounted estimated future net operating cash flows directly related to the asset, including disposal value if any, is less than the carrying amount of the asset. If any asset is determined to be impaired, the loss is measured as the amount by which the carrying amount of the asset exceeds its fair value. The estimate of fair value is based on the best information available, including prices for similar assets. Changes in these estimates could cause us to reduce the carrying value of property and equipment. An estimate of the impact to our earnings if other assumptions had been used is not practicable because of the significant number of assumptions that would be involved in the estimates. In December 2012, our mid-stream segment had a $1.2 million write down of its Erick system. There was no volume from the wells connected to this system, the compressor and related surface equipment have been removed from this location and there is no future activity anticipated from this gathering system. No significant impairment was recorded at December 31, 2013 or 2011.

Goodwill.    Goodwill represents the excess of the cost of acquisitions over the fair value of the net assets acquired. An annual impairment test is performed in the fourth quarter to determine whether the fair value has decreased and additionally when events indicate an impairment may have occurred. Goodwill is all related to our drilling segment, and accordingly, the impairment test is based on the estimated discounted future net cash flows of our drilling segment, utilizing discount rates and other factors in determining the fair value of our drilling segment. No goodwill impairment was recorded at December 31, 2013, 2012, or 2011.

Turnkey and Footage Drilling Contracts.    Because our contract drilling operations do not bear the risk of completion of a well being drilled under a “daywork” contract, we recognize revenues and expense generated under “daywork” contracts as the services are performed. Under “footage” and “turnkey” contracts we bear the risk of completion of the well, so revenues and expenses are recognized when the well is substantially completed. Substantial completion is determined when the well bore reaches the depth specified in the contract. The entire amount of a loss, if any, is recorded when the loss can be reasonably determined, however, any profit is recorded only at the time the well is finished. The costs of drilling contracts uncompleted at the end of the reporting period (which includes expenses incurred to date on “footage” or “turnkey” contracts) are included in other current assets. We did not drill any wells under turnkey or footage contracts in 2013, 2012, or 2011.

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Accounting for Value of Stock Compensation Awards.    To account for stock-based compensation, compensation cost is measured at the grant date based on the fair value of an award and is recognized over the service period, which is usually the vesting period. We elected to use the modified prospective method, which requires compensation expense to be recorded for all unvested stock options and other equity-based compensation beginning in the first quarter of adoption. The determination of the fair value of an award requires significant estimates and subjective judgments regarding, among other things, the appropriate option pricing model, the expected life of the award and performance vesting criteria assumptions. As there are inherent uncertainties related to these factors and our judgment in applying them to the fair value determinations, there is risk that the recorded stock compensation may not accurately reflect the amount ultimately earned by the employee.

Accounting for Derivative Instruments and Hedging.    For our economic hedges that we did not apply cash flow accounting to, any changes in their fair value occurring before their maturity (i.e., temporary fluctuations in value) are reported in gain (loss) on derivatives not designated as hedges and hedge ineffectiveness, net in our Consolidated Statements of Income. The commodity derivative instruments we had under cash flow accounting expired as of December 2013. Previous changes in the fair value of derivatives designated as cash flow hedges, to the extent they were effective in offsetting cash flows attributable to the hedged risk, were recorded in OCI until the hedged item was recognized into earnings. When the hedged item was recognized into earnings, it was reported in oil and natural gas revenues. Any change in fair value resulting from ineffectiveness was recognized in gain (loss) on derivatives not designated as hedges and hedge ineffectiveness, net.

New Accounting Standards

Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists. In July 2013, ASU 2013-11 was issued because GAAP does not include explicit guidance on the financial statement presentation of an unrecognized tax benefit when a net operating loss carryforward, a similar tax loss, or a tax credit carryforward exists. The amendment provides explicit guidance on the financial statement presentation of an unrecognized tax benefit when a net operating loss carryforward, a similar tax loss, or a tax credit carryforward exists. The amendments in this Update are effective for fiscal years, and interim periods within those years, beginning after December 15, 2013. Early adoption is permitted.  The amendments should be applied prospectively to all unrecognized tax benefits that exist at the effective date. Retrospective application is permitted. We anticipate there will be no effect on our financial position or results of operations when adopted.

Inclusion of the Fed Funds Effective Swap Rate (or Overnight Index Swap Rate) as a Benchmark Interest Rate for Hedge Accounting Purposes. The FASB has issued ASU 2013-10, the amendments in this update permit the Fed Funds Effective Swap Rate (OIS) to be used as a U.S. benchmark interest rate for hedge accounting purposes under Topic 815, in addition to U.S. Treasury and LIBOR. The amendments also remove the restriction on using different benchmark rates for similar hedges. The amendments are effective prospectively for qualifying new or redesignated hedging relationships entered into on or after July 17, 2013. We do not have any interest rate hedges at this time.

Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income. In February 2013, the FASB issued ASU 2013-02 to address the presentation of comprehensive income related to ASU 2011-05. The standard requires that companies present, either in a single note or parenthetically on the face of the financial statements, the effect of significant amounts reclassified from each component of accumulated other comprehensive income based on its source (e.g., the release due to cash flow hedges from interest rate contracts) and the income statement line items affected by the reclassification (e.g., interest income or interest expense). The amendments are effective for fiscal years, and interim periods within those years, beginning after December 15, 2012. We chose to present the information in a single note (Note 15 of the Notes to our Consolidated Financial Statements).

Clarifying the Scope of Disclosures about Offsetting Assets and Liabilities. In January 2013, the FASB issued ASU 2013-01 to limit the scope of balance sheet offsetting disclosures contained in previously issued guidance in ASU 2011-11—Disclosures about Offsetting Assets and Liabilities. Specifically, ASU 2011-11 applies only to derivatives, repurchase agreements and reverse purchase agreements, and securities borrowing and securities lending transactions that are either offset in accordance with specific criteria contained in the FASB Accounting Standards or subject to a master netting arrangement or similar agreement.

Unlike IFRS, GAAP allows companies the option to present net in their balance sheets derivatives that are subject to a legally enforceable netting arrangement with the same party where rights of set-off are only available in the event of default or bankruptcy. To address these differences between IFRS and GAAP, the FASB and the IASB (the Boards) issued an exposure draft that proposed new criteria for netting that were narrower than the current conditions currently in GAAP. Nevertheless, in response to feedback from their respective stakeholders, the Boards decided to retain their existing offsetting models. Instead,

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the Boards have issued common disclosure requirements related to offsetting arrangements to allow investors to better compare financial statements prepared in accordance with IFRS or GAAP. The amendments in this ASU require an entity to disclose information about offsetting and related arrangements to enable users of its financial statements to understand the effect of those arrangements on its financial position. An entity is required to apply the amendments for annual reporting periods beginning on or after January 1, 2013, and interim periods within those annual periods. An entity should provide the disclosures required by those amendments retrospectively for all comparative periods presented. Derivatives subject to a master netting agreement are the only transactions in this accounting standard that affect us. We provide the effect of netting on our financial position in Note 14 of the Notes to our Consolidated Financial Statements.

Financial Condition and Liquidity

Summary.

Our financial condition and liquidity depends on the cash flow from our operations and borrowings under our credit agreement. The principal factors determining the amount of our cash flow are:

• the demand for and the dayrates we receive for our drilling rigs;

• the quantity of oil, NGLs, and natural gas we produce;

• the prices we receive for our oil, NGLs, and natural gas production; and

• the margins we obtain from our natural gas gathering and processing contracts.

The following is a summary of certain financial information as of December 31, and for the years ended December 31:

	2013			2012				2011
	(In thousands except percentages)
Working capital	$	(31,542	)	$	(11,495	)		$	15,715
Long-term debt (2)	$	645,696		$	716,359			$	300,000
Shareholders’ equity	$	2,173,392		$	1,974,301		(1)	$	1,947,017
Ratio of long-term debt to total capitalization	23		%	27		%	(1)	13		%
Net income	$	184,746		$	23,176		(1)	$	195,867
Net cash provided by operating activities	$	674,331		$	690,911			$	608,455
Net cash used in investing activities	$	(579,180	)	$	(1,079,042	)		$	(768,236	)
Net cash provided by (used in) financing activities	$	(77,532	)	$	388,270			$	159,257

_________________________

(1) In June and December 2012, we incurred a non-cash ceiling test write down of our oil and natural gas properties of $115.9 million and $167.7 million pre-tax ($72.1 million and $104.4 million, net of tax), respectively, due to low 12-month average commodity prices at quarter-end. The write downs impacted our 2012 shareholders’ equity, ratio of long-term debt to total capitalization and net income. There was no impact on our compliance with the covenants contained in our credit agreement.

(2) Long-term debt is net of unamortized discount.

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The following table summarizes certain operating information for the years ended December 31:

	2013		2012		2011
Oil and Natural Gas:
Oil production (MBbls)	3,360		3,279		2,511
Natural gas liquids production (MBbls)	3,914		2,796		2,239
Natural gas production (MMcf)	56,757		48,930		44,104
Average oil price per barrel received	$	95.06	$	92.60	$	87.18
Average oil price per barrel received excluding hedges	$	95.18	$	90.19	$	93.49
Average NGLs price per barrel received	$	31.79	$	31.58	$	43.64
Average NGLs price per barrel received excluding hedges	$	31.79	$	30.70	$	44.44
Average natural gas price per mcf received	$	3.32	$	3.37	$	4.26
Average natural gas price per mcf received excluding hedges	$	3.33	$	2.53	$	3.78
Contract Drilling:
Average number of our drilling rigs in use during the period	65.0		73.9		76.1
Total number of drilling rigs owned at the end of the period	121		127		127
Average dayrate	$	19,646	$	19,949	$	18,842
Mid-Stream:
Gas gathered—Mcf/day	309,554		250,290		188,569
Gas processed—Mcf/day	140,584		133,987		92,940
Gas liquids sold—gallons/day	543,602		542,578		412,064
Number of natural gas gathering systems	38		39		35
Number of processing plants	15		14		10

At December 31, 2013, we had unrestricted cash totaling $18.6 million and had borrowed none of the $500.0 million we currently have available under our credit agreement. Our credit agreement is used primarily for working capital and capital expenditures.

On May 18, 2011, we completed the sale of $250.0 million aggregate principal amount of registered senior subordinated notes due 2021 (the 2011 Notes) which bear interest at a rate of 6.625% per year. . The 2011 Notes were issued at par and mature on May 15, 2021. The net proceeds were used to repay the $220.3 million we had outstanding as of May 18, 2011 under the credit agreement. The remaining proceeds were used for general working capital purposes.

On July 24, 2012, we completed the sale of $400.0 million aggregate principal amount of unregistered senior subordinated notes (the 2012 Notes) due May 15, 2021, which bear interest at a rate of 6.625% per year. The 2012 Notes were sold at 98.75% of par plus accrued interest from May 15, 2012. We used the net proceeds from the offering to partially finance the acquisition of oil and natural gas properties from Noble. We incurred $8.7 million of fees that are being amortized as debt issuance cost over the life of the 2012 Notes. 

On November 13, 2012, we registered with the SEC on Form S-4 an offer to exchange the 2012 Notes for additional notes with materially identical terms to our existing 2011 Notes. The 2011 Notes were registered under the Securities Act. On January 7, 2013, the exchange of the 2012 Notes was completed. The notes issued in exchange for the 2012 Notes are now registered and treated as a single series of debt securities with the 2011 Notes, bringing the total to $650.0 million aggregate principal amount of 6.625% senior subordinated notes (the Notes). The interest is payable semi-annually (in arrears) on May 15 and November 15 of each year, and the Notes will mature on May 15, 2021.

Working Capital

Typically, our working capital balance varies primarily because of the timing of our trade accounts receivable and accounts payable and from the fluctuation in current assets and liabilities associated with the mark to market value of our hedging activity. We had negative working capital of $31.5 million and $11.5 million as of December 31, 2013 and 2012, respectively, and positive working capital of $15.7 million as of December 31, 2011. The effect of our derivatives decreased

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working capital by $5.0 million as of December 31, 2013, and increased working capital by $9.6 million and $18.0 million as of December 31, 2012, and 2011, respectively.

Impact of Prices for Our Oil, NGLs, and Natural Gas

Any significant change in oil, NGLs, or natural gas prices has a material effect on our revenues, cash flow, and the value of our oil, NGLs, and natural gas reserves. Generally, prices and demand for domestic natural gas are influenced by weather conditions, supply imbalances, and by worldwide oil price levels. Domestic oil prices are primarily influenced by world oil market developments. All of these factors are beyond our control and we cannot predict nor measure their future influence on the prices we will receive.

Based on our 2013 production, a $0.10 per Mcf change in what we are paid for our natural gas production, without the effect of hedging, would result in a corresponding $448,000 per month ($5.4 million annualized) change in our pre-tax operating cash flow. Our 2013 average natural gas price was $3.32 compared to an average natural gas price of $3.37 for 2012 and $4.26 for 2011. A $1.00 per barrel change in our oil price, without the effect of hedging, would have a $268,000 per month ($3.2 million annualized) change in our pre-tax operating cash flow and a $1.00 per barrel change in our NGLs prices, without the effect of hedging, would have a $310,000 per month ($3.7 million annualized) change in our pre-tax operating cash flow based on our production in 2013. Our 2013 average oil price per barrel was $95.06 compared with an average oil price of $92.60 in 2012 and $87.18 in 2011, and our 2013 average NGLs price per barrel was $31.79 compared with an average NGLs price of $31.58 in 2012 and $43.64 in 2011.

Because commodity prices have an effect on the value of our oil, NGLs, and natural gas reserves, declines in those prices can result in a decline in the carrying value of our oil and natural gas properties. Price declines can also adversely affect the semi-annual determination of the amount available for us to borrow under our credit agreement since that determination is based mainly on the value of our oil, NGLs, and natural gas reserves. A reduction could limit our ability to carry out our planned capital projects.

Our natural gas production is sold to intrastate and interstate pipelines, to independent marketing firms and gatherers under contracts with terms generally ranging anywhere from one month to five years. Our oil production is sold to independent marketing firms generally under six month contracts.

Contract Drilling

Many factors influence the number of drilling rigs we are working at any given time as well as the costs and revenues associated with that work. These factors include the demand for drilling rigs in our areas of operation, competition from other drilling contractors, the prevailing prices for oil, NGLs, and natural gas, availability and cost of labor to run our drilling rigs, and our ability to supply the equipment needed.

Competition to keep qualified labor continues.  We increased compensation for rig personnel in the Rocky Mountain division during the first quarter of 2012.  We do not currently anticipate any further increases.

Today, almost all of our working drilling rigs are drilling horizontal or directional wells for oil and NGLs. Part of this shift included operators moving to shallower oil plays like the Mississippian play in northern Oklahoma and southern Kansas. These shallower plays tend to use drilling rigs with lower horsepower which have lower dayrates and margins. As methods for drilling and completing horizontal wells have improved, demand to drill deeper and longer horizontal wells has once again strengthened demand for qualified higher horsepower rigs. All of these factors ultimately affect the demand and mix of the type of drilling rigs used by our customers. The future demand for and the availability of drilling rigs to meet that demand will have an impact on our future dayrates. For 2013, our average dayrate was $19,646 per day compared to $19,949 per day for 2012. Our average number of drilling rigs used in 2013 was 65.0 (52%) compared with 73.9 (58%) in 2012. Based on the average utilization of our drilling rigs during 2013, a $100 per day change in dayrates has a $6,500 per day ($2.4 million annualized) change in our pre-tax operating cash flow.

Our contract drilling segment provides drilling services for our exploration and production segment. Some of the drilling services we perform on our properties are, depending on the timing of those services, deemed to be associated with the acquisition of an ownership interest in the property. In those cases, revenues and expenses for those services are eliminated in our income statement, with any profit recognized as a reduction in our investment in our oil and natural gas properties. The contracts for these services are issued under the same conditions and rates as the contracts entered into with unrelated third

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parties. We eliminated revenue of $64.3 million, $49.6 million, and $52.2 million for 2013, 2012, and 2011, respectively, from our contract drilling segment and eliminated the associated operating expense of $46.9 million, $34.1 million, and $32.6 million during 2013, 2012, and 2011, respectively, yielding $17.4 million, $15.5 million, and $19.6 million during 2013, 2012, and 2011, respectively, as a reduction to the carrying value of our oil and natural gas properties.

Mid-Stream

This segment is engaged primarily in the buying, selling, gathering, processing, and treating of natural gas. It operates three natural gas treatment plants, 15 processing plants, 38 gathering systems, and approximately 1,500 miles of pipeline. Its operations are located in Oklahoma, Texas, Kansas, Pennsylvania, and West Virginia. This segment enhances our ability to gather and market not only our own natural gas and NGLs but also that owned by third parties and serves as a mechanism through which we can construct or acquire existing natural gas gathering and processing facilities. During 2013, 2012, and 2011 this segment purchased $83.0 million, $68.2 million, and $71.5 million, respectively, of our oil and natural gas segment's natural gas and NGLs production, and provided gathering and transportation services of $8.0 million, $5.1 million, and $4.6 million, respectively. Intercompany revenue from services and purchases of production between this business segment and our oil and natural gas segment has been eliminated in our consolidated financial statements.

Our mid-stream segment gathered an average of 309,554 Mcf per day in 2013 compared to 250,290 Mcf per day in 2012 and 188,569 Mcf per day in 2011. It processed an average of 140,584 Mcf per day in 2013 compared to 133,987 Mcf per day in 2012 and 92,940 Mcf per day in 2011, and sold NGLs of 543,602 gallons per day in 2013 compared to 542,578 gallons per day in 2012 and 412,064 gallons per day in 2011. Gas gathering volumes per day in 2013 increased primarily from new wells connected to our systems throughout 2013 along with the addition of new systems and the expansion of existing systems. Volumes processed and NGLs sold both increased primarily due to the addition of new wells connected, recent upgrades to several existing processing facilities, and the addition of new processing facilities.

Our Credit Agreement and Senior Subordinated Notes

Credit Agreement. Under our Senior Credit Agreement (credit agreement) the amount available to be borrowed is the lesser of the amount we elect (from time to time) as the commitment amount ($500.0 million) or the value of the borrowing base as determined by the lenders ($800.0 million), but in either event not to exceed the maximum credit agreement amount of $900.0 million. We are charged a commitment fee ranging from 0.375 to 0.50 of 1% on the amount available but not borrowed. The rate varies based on the amount borrowed as a percentage of the amount of the total borrowing base. The credit agreement matures as of September 13, 2016. We paid $1.5 million in origination, agency, syndication, and other related fees when the credit agreement was amended on September 5, 2012. We are amortizing these fees over the life of the credit agreement. At both December 31, 2013 and February 14, 2014, there were no borrowings.

The current lenders under our credit agreement and their respective participation interests are as follows:

Lender	Participation Interest
BOK (BOKF, NA, dba Bank of Oklahoma)	17	%
BBVA Compass Bank	17	%
Bank of Montreal	15	%
Bank of America, N.A.	15	%
Comerica Bank	8	%
Crédit Agricole Corporate and Investment Bank, London Branch	8	%
Wells Fargo Bank, National Association	8	%
Canadian Imperial Bank of Commerce	8	%
The Bank of Nova Scotia	4	%
	100	%

The amount of the borrowing base, which is subject to redetermination by the lenders on April 1st and October 1st of each year, is based primarily on a percentage of the discounted future value of our oil and natural gas reserves. There was no change to the borrowing base as of the October 1, 2013 redetermination. We or the lenders may request a onetime special

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redetermination of the borrowing base between each scheduled redetermination. In addition, we may request a redetermination following the completion of an acquisition that meets the requirements set forth in the credit agreement.

At our election, any part of the outstanding debt under the credit agreement may be fixed at a London Interbank Offered Rate (LIBOR). LIBOR interest is computed as the sum of the LIBOR base for the applicable term plus 1.75% to 2.50% depending on the level of debt as a percentage of the borrowing base and is payable at the end of each term, or every 90 days, whichever is less. Borrowings not under LIBOR bear interest at the prime rate specified in the agreement,which cannot be less than LIBOR plus 1.00%. Interest is payable at the end of each month, and the principal may be repaid in whole or in part at anytime, without a premium or penalty.

We can use borrowings for financing general working capital requirements for (a) exploration, development, production and acquisition of oil and gas properties, (b) acquisitions and operation of mid-stream assets, (c) issuance of standby letters of credit, (d) contract drilling services, and (e) general corporate purposes.

The credit agreement prohibits, among other things:

• the payment of dividends (other than stock dividends) during any fiscal year in excess of 30% of our consolidated net income for the preceding fiscal year;

• the incurrence of additional debt with certain limited exceptions; and

• the creation or existence of mortgages or liens, other than those in the ordinary course of business, on any of our properties, except in favor of our lenders.

The credit agreement also requires that we have at the end of each quarter:

• a current ratio (as defined in the credit agreement) of not less than 1 to 1; and

• a leverage ratio of funded debt to consolidated EBITDA (as defined in the credit agreement) for the most recently ended rolling four fiscal quarters of no greater than 4 to 1.

As of December 31, 2013, we were in compliance with the covenants contained in the credit agreement.

6.625% Senior Subordinated Notes.  On May 18, 2011, we completed the sale of $250.0 million aggregate principal amount of registered senior subordinated notes due 2021 (the 2011 Notes) which bear interest at a rate of 6.625% per year. The Notes were issued at par and mature on May 15, 2021. We received net proceeds of approximately $244.0 million after deducting fees of approximately $6.0 million. Those fees are being amortized as deferred financing costs over the life of the Notes. We used the net proceeds to repay outstanding borrowings under our credit agreement, which was $220.3 million on May 18, 2011. The remaining proceeds were used for general working capital purposes.

On July 24, 2012, we completed the sale of $400.0 million aggregate principal amount of unregistered senior subordinated notes (the 2012 Notes) due May 15, 2021, which bear interest at a rate of 6.625% per year. The 2012 Notes were sold at 98.75% of par plus accrued interest from May 15, 2012. We used the net proceeds from the offering to partially finance the acquisition of oil and natural gas properties from Noble. We incurred $8.7 million of fees that are being amortized as debt issuance cost over the life of the 2012 Notes. 

On November 13, 2012, we registered with the SEC on Form S-4 an offer to exchange the 2012 Notes for additional notes with materially identical terms to our existing 2011 Notes, which were registered under the Securities Act. On January 7, 2013, the exchange of the 2012 Notes was completed. The notes issued in exchange for the 2012 Notes are now registered and treated as a single series of debt securities with the 2011 Notes, bringing the total to $650.0 million aggregate principal amount of 6.625% senior subordinated notes (the Notes). The interest is payable semi-annually (in arrears) on May 15 and November 15 of each year, and the Notes will mature on May 15, 2021.

The notes are guaranteed by our 100% owned domestic direct and indirect subsidiaries (the Guarantors). Unit, as the parent company, has no independent assets or operations. The guarantees registered under the registration statement are full and unconditional and joint and several, subject to certain automatic customary releases, including sale, disposition, or transfer of the capital stock or substantially all of the assets of a subsidiary guarantor, exercise of legal defeasance option or covenant defeasance option, and designation of a subsidiary guarantor as unrestricted in accordance with the governing Indenture. Any subsidiaries of Unit other than the Guarantors are minor. There are no significant restrictions on the ability of Unit to receive funds from its subsidiaries through dividends, loans, advances, or otherwise.

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The Notes are subject to an Indenture dated as of May 18, 2011, between us and Wilmington Trust, National Association (successor to Wilmington Trust FSB), as Trustee (the Trustee), as supplemented by the First Supplemental Indenture thereto dated as of May 18, 2011, between us, the Guarantors, and the Trustee, and as further supplemented by that the Second Supplemental Indenture thereto dated as of January 7, 2013, between us, the Guarantors and the Trustee, establishing the terms and providing for the issuance of the Notes (as supplemented, the 2011 Indenture). The discussion of the Notes in this report is qualified by and subject to the actual terms of the 2011 Indenture .

On and after May 15, 2016, we may redeem all or, from time to time, a part of the Notes at certain redemption prices, plus accrued and unpaid interest. Before May 15, 2014, we may on any one or more occasions redeem up to 35% of the original principal amount of the Notes with the net cash proceeds of one or more equity offerings at a redemption price of 106.625% of the principal amount, plus accrued and unpaid interest, if any, to the redemption date, provided that at least 65% of the original principal amount of the Notes remains outstanding after each redemption. In addition, at any time before May 15, 2016, we may redeem the Notes, in whole or in part, at a redemption price equal to 100% of the principal amount plus a “make whole” premium, plus accrued and unpaid interest, if any, to the redemption date. If a “change of control” occurs, subject to certain conditions, we must offer to repurchase from each holder all or any part of that holder’s Notes at a purchase price in cash equal to 101% of the principal amount of the Notes plus accrued and unpaid interest, if any, to the date of purchase. The Indenture contains customary events of default. The Indenture contains covenants that, among other things, limit our ability and the ability of certain of our subsidiaries to incur or guarantee additional indebtedness; pay dividends on our capital stock or redeem capital stock or subordinated indebtedness; transfer or sell assets; make investments; incur liens; enter into transactions with our affiliates; and merge or consolidate with other companies. We were in compliance with all covenants of the Notes as of December 31, 2013.

Capital Requirements

Oil and Natural Gas Dispositions, Acquisitions, and Capital Expenditures.    Most of our capital expenditures for this segment are discretionary and directed toward future growth. Any decision to increase our oil, NGLs, and natural gas reserves through acquisitions or through drilling depends on the prevailing or expected market conditions, potential return on investment, future drilling potential, and opportunities to obtain financing under the circumstances involved, all of which provide us with a large degree of flexibility in deciding when and if to incur these costs. We completed drilling 149 gross wells (91.14 net wells) in 2013 compared to 171 gross wells (80.08 net wells) in 2012, and 160 gross wells (82.42 net wells) in 2011. Our 2013 total capital expenditures for our oil and natural gas segment, excluding an $18.0 million reduction in the ARO liability, totaled $549.2 million compared to 2012 capital expenditures of $521.2 million (excluding a $45.1 million ARO liability and $579.0 million for acquisitions), and 2011 capital expenditures of $514.8 million (excluding a $23.3 million ARO liability and $50.0 million for acquisitions).

For all of 2014, we plan to participate in drilling approximately 180 wells and estimate our total capital expenditures (excluding any possible acquisitions) for our oil and natural gas segment will be approximately $718.0 million. Whether we are able to drill all of those wells is dependent on a number of factors, many of which are beyond our control and include the availability of drilling rigs, availability of pressure pumping services, prices for oil, NGLs, and natural gas, demand for oil, NGLs, and natural gas, the cost to drill wells, the weather, and the efforts of outside industry partners.

On July 20, 2011, we acquired certain producing properties from an unaffiliated seller for approximately $12.3 million in cash, after post-closing adjustments, consisting of 30 operated wells and 59 non-operated well interests located in Beaver, Harper, and Ellis Counties, Oklahoma and Lipscomb County, Texas. The purchase price allocation was $8.4 million for proved properties and $3.9 million for acreage.

On August 31, 2011, we acquired certain producing oil and gas properties for $30.5 million in cash from an unaffiliated seller. Included in the acquisition were more than 500 wells located principally in the Oklahoma Arkoma Woodford and Hartshorne Coal plays along with other properties located throughout Oklahoma and Texas. The acquisition also included approximately 55,000 net acres of which 96% was held by production.

On September 17, 2012, we closed on the acquisition of certain oil and natural gas assets from Noble. After final closing adjustments, the acquisition included approximately 83,000 net acres primarily in the Granite Wash, Cleveland, and various other plays in western Oklahoma and the Texas Panhandle. The adjusted amount paid was $592.6 million.

Also in September 2012, we sold our interest in certain Bakken properties. The proceeds, net of related expenses, were $226.6 million. In addition, we sold certain oil and natural gas assets located in Brazos and Madison Counties, Texas for approximately $44.1 million. In August 2013, we sold additional Bakken property interests. The proceeds, net of related

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expenses, were $57.1 million. In addition, we had other non-core asset sales with proceeds, net of related expenses, of $21.7 million for 2013. Proceeds from these dispositions reduced the net book value of the full cost pool with no gain or loss recognized.

Drilling Dispositions, Acquisitions, and Capital Expenditures.  During 2011, we were awarded two additional new build drilling rig contracts for 1,500 horsepower, diesel-electric drilling rigs. One was placed into service during the fourth quarter of 2011 and the other was placed in service during the first quarter of 2012, both in Wyoming.

During the first quarter of 2012, we sold an idle 600 horsepower mechanical drilling rig to an unaffiliated third-party. Additionally, in the second quarter we placed another new 1,500 horsepower, diesel-electric drilling rig to work in North Dakota under a three year contract.

During the third quarter of 2012, we had a fire on one of our drilling rigs located in the mid-continent region. The net book value of the damaged equipment was $3.2 million. All of the net book value of the damaged equipment was recoverable from insurance proceeds. No personnel were injured in this incident.

In the second quarter of 2013, we sold one of our 2,000 horsepower electric drilling rigs. During the third and fourth quarters of 2013, we sold three additional 2,000 horsepower and one 3,000 horsepower electric drilling rigs. All of these sales were to unaffiliated third-parties. Four additional idle 3,000 horsepower drilling rigs were sold to an unaffiliated third party in the first quarter of 2014 all of which were classified as assets held for sale at December 31, 2013. The proceeds from these various sales will be used in our new drilling rig program we launched to design and build a new proprietary 1,500 horsepower, AC electric drilling rig, called the BOSS rig. We anticipate the BOSS drilling rig will position us to more effectively meet the demands of our existing customers as well as allowing us to compete for the work of new customers.

The first BOSS drilling rig will be operational the first quarter of 2014 and will work initially for our oil and natural gas segment. Two additional BOSS drilling rigs are contracted to third party operators and are anticipated to be placed into service in the second and third quarters of 2014.

Our anticipated 2014 capital expenditures for this segment are $132.0 million. We have spent $64.3 million for capital expenditures during 2013 compared to $77.5 million in 2012, and $162.2 million in 2011.

Mid-Stream Dispositions, Acquisitions, and Capital Expenditures. After relocating two processing plants from our Hemphill County, Texas facility to our new Reno County, Kansas facility, we now have the capacity to process 135 MMcf per day of our own and third party Granite Wash natural gas production at our Hemphill facility. We completed two pipeline extension projects for a total cost of approximately $5.7 million in the fourth quarter of 2013. These extensions will connect additional production from our oil and natural gas segment to this system.

We have completed construction of a new gathering and processing facility in Reno County, Kansas. This new system consists of approximately 20 miles of gathering pipeline and two processing plants that were relocated from our Hemphill facility which included a five MMcf per day refrigeration plant skid and a 20 MMcf per day turbo expander plant skid. Both plant skids are installed and operational. We began gathering gas at this facility during the second quarter of 2013 and processing gas in the third quarter of 2013.

At our Cashion facility located in central Oklahoma, we completed the extension of our gathering system approximately three miles at a capital cost of $2.8 million. This extension will allow us to gather additional production from active producers in the area. We installed a new 25 MMcf per day high efficiency turbo-expander processing plant at this facility that became operational in March 2012. With the installation of this additional plant, our total processing capacity increased to approximately 45 MMcf per day at our Cashion facility.

At our Perkins facility located in central Oklahoma, we completed the installation and upgrade of an 8 MMcf per day processing skid which became operational in the first quarter of 2013. With this new plant skid operational, our total processing capacity is now 18 MMcf per day.

In the Mississippian play in north central Oklahoma, our Bellmon system consists of approximately 185 miles of pipeline, which includes a 26-mile extension to connect our existing Remington facility, a 20-mile NGL line and two owned natural gas processing plants. In the first quarter of 2013, we completed the installation of an owned 30 MMcf per day cryogenic processing plant, which allowed us to take out of service the original rental processing plant. After this owned processing plant was installed and operational, our total processing capacity at this facility was 55 MMcf per day including the original rental

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processing plan. Due to anticipated increased volumes, we also completed the installation of a new 60 MMcf per day processing plant in the first quarter of 2014. With both of these owned processing plants operational we will have capacity to process 90 MMcf per day at this facility.

In the Appalachian region, in the fourth quarter of 2012, construction was completed on the first phase of our Pittsburgh Mills gathering facility in Allegheny and Butler Counties, Pennsylvania.  The first phase of this project consists of approximately 14 miles of gathering pipeline. In the first quarter of 2013, the related compressor station was completed and operational. We currently have 19 wells connected to this gathering system with plans to continue to add wells as they are drilled. Preliminary activity is underway for the planned expansion of this pipeline into Butler County, Pennsylvania.  Right of way has been acquired and construction is scheduled to begin in the second quarter of 2014. This expansion is expected to be completed by the end of 2014. We completed the construction of the Brookfield gathering system, a new gathering system in north central Pennsylvania. It became operational in the second quarter of 2013.

In December 2012, we had a $1.2 million write-down of its Erick system. There was no volume from the wells connected to this system, the compressor and related surface equipment have been removed from this location and there is no future activity anticipated from this gathering system.

During 2013, our mid-stream segment incurred $96.1 million in capital expenditures as compared to $183.2 million ($18.7 million on four gathering systems acquired in the Noble acquisition) in 2012 and $79.4 million in 2011, including acquisitions. For 2014, our estimated capital expenditures (excluding acquisitions) are $78.0 million. At December 31, 2013, we had committed to purchase a gas treating plant for the remaining payment of $0.6 million within the next twelve months.

Contractual Commitments

At December 31, 2013, we had the following contractual obligations:

	Payments Due by Period
	Total		Less Than 1 Year		2-3 Years		4-5 Years		After 5 Years
	(In thousands)
Long-term debt (1)	$	1,021,281	$	43,062	$	86,125	$	86,125	$	805,969
Operating leases (2)	12,640		8,480		4,044		116		—
Drill pipe, drilling components and equipment purchases (3)	12,021		12,021		—		—		—
Total contractual obligations	$	1,045,942	$	63,563	$	90,169	$	86,241	$	805,969

_________________________ 

(1) See previous discussion in MD&A regarding our long-term debt. This obligation is presented in accordance with the terms of the Notes and credit agreement and includes interest calculated using our December 31, 2013 interest rates of 6.625% for the Notes.

(2) We lease office space or yards in Edmond, Oklahoma City, and Tulsa, Oklahoma; Houston, Texas; Englewood, Colorado; Pinedale, Wyoming; and Pittsburgh, Pennsylvania under the terms of operating leases expiring through September, 2017. Additionally, we have several equipment leases and lease space on short-term commitments to stack excess drilling rig equipment and production inventory.

(3) We have committed to purchase approximately $11.4 million of new drilling rig components, drill pipe, and related equipment and $0.6 million towards a gas treating plant over the next twelve months.

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At December 31, 2013, we also had the following commitments and contingencies that could create, increase or accelerate our liabilities:

	Estimated Amount of Commitment Expiration Per Period
Other Commitments	Total Accrued		Less Than 1 Year		2-3 Years		4-5 Years		After 5 Years
	(In thousands)
Deferred compensation plan (1)	$	3,589	Unknown		Unknown		Unknown		Unknown
Separation benefit plans (2)	$	9,382	$	351	Unknown		Unknown		Unknown
Derivative liabilities—commodity hedges	$	5,561	$	5,561	$	—	$	—	$	—
ARO liability (3)	$	133,657	$	2,954	$	40,261	$	6,503	$	83,939
Gas balancing liability (4)	$	3,775	Unknown		Unknown		Unknown		Unknown
Repurchase obligations (5)	$	—	Unknown		Unknown		Unknown		Unknown
Workers’ compensation liability (6)	$	20,041	$	8,808	$	2,861	$	1,154	$	7,218

_________________________ 

(1) We provide a salary deferral plan which allows participants to defer the recognition of salary for income tax purposes until actual distribution of benefits, which occurs at either termination of employment, death or certain defined unforeseeable emergency hardships. We recognize payroll expense and record a liability, included in other long-term liabilities in our Consolidated Balance Sheets, at the time of deferral.

(2) Effective January 1, 1997, we adopted a separation benefit plan (“Separation Plan”). The Separation Plan allows eligible employees whose employment with us is involuntarily terminated or, in the case of an employee who has completed 20 years of service, voluntarily or involuntarily terminated, to receive benefits equivalent to four weeks salary for every whole year of service completed with the company up to a maximum of 104 weeks. To receive payments the recipient must waive certain claims against us in exchange for receiving the separation benefits. On October 28, 1997, we adopted a Separation Benefit Plan for Senior Management (“Senior Plan”). The Senior Plan provides certain officers and key executives of the company with benefits generally equivalent to the Separation Plan. The Compensation Committee of the Board of Directors has absolute discretion in the selection of the individuals covered in this plan. On May 5, 2004 we also adopted the Special Separation Benefit Plan (“Special Plan”). This plan is identical to the Separation Benefit Plan with the exception that the benefits under the plan vest on the earliest of a participant’s reaching the age of 65 or serving 20 years with the company. On December 31, 2008, all these plans were amended to bring the plans into compliance with Section 409A of the Internal Revenue Code of 1986, as amended.

(3) When a well is drilled or acquired, under ASC 410 “Accounting for Asset Retirement Obligations,” we record the fair value of liabilities associated with the retirement of long-lived assets (mainly plugging and abandonment costs for our depleted wells).

(4) We have recorded a liability for those properties we believe do not have sufficient oil, NGLs, and natural gas reserves to allow the under-produced owners to recover their under-production from future production volumes.

(5) We formed The Unit 1984 Oil and Gas Limited Partnership and the 1986 Energy Income Limited Partnership along with private limited partnerships (the “Partnerships”) with certain qualified employees, officers and directors from 1984 through 2011, with a subsidiary of ours serving as general partner. The Partnerships were formed for the purpose of conducting oil and natural gas acquisition, drilling and development operations and serving as co-general partner with us in any additional limited partnerships formed during that year. The Partnerships participated on a proportionate basis with us in most drilling operations and most producing property acquisitions commenced by us for our own account during the period from the formation of the Partnership through December 31 of that year. These partnership agreements require, on the election of a limited partner, that we repurchase the limited partner’s interest at amounts to be determined by appraisal in the future. Repurchases in any one year are limited to 20% of the units outstanding. We made repurchases of $16,000, $56,000, and $22,000 in 2013, 2012, and 2011, respectively.

(6) We have recorded a liability for future estimated payments related to workers’ compensation claims primarily associated with our contract drilling segment.

Derivative Activities

Periodically we enter into derivative transactions locking in the prices to be received for a portion of our oil, NGLs, and natural gas production. In August 2012, we determined on a prospective basis to enter into economic hedges without electing cash flow hedge accounting. All of our previous cash flow hedges expired as of December 31, 2013. Therefore, the change in fair value, on all commodity derivatives entered into are reflected in the income statement and not in accumulated other comprehensive income.

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Commodity Hedges.  Our commodity hedging is intended to reduce our exposure to price volatility and manage price risks. Our decision on the type and quantity of our production and the price(s) of our hedge(s) is based, in part, on our view of current and future market conditions. As of December 31, 2013, based on our fourth quarter 2013 average daily production, the approximated percentages of our production that we have hedged are as follows:

	Mark-to-Market
	2014
Daily oil production	75	%
Daily natural gas production	58	%

With respect to the commodities subject to our hedges, the use of hedging limits the risk of adverse downward price movements. However, it also limits increases in future revenues that would otherwise result from price movements above the hedged prices.

The use of derivative transactions carries with it the risk that one or more of the counterparties may not be able to meet their financial obligations under the transactions. Based on our evaluation at December 31, 2013, we determined that there was no material risk of non-performance by any of our counterparties. At December 31, 2013, the fair values of the net assets (liabilities) we had with each of the counterparties to our commodity derivative transactions are as follows:

	December 31, 2013
	(In millions)
Canadian Imperial Bank of Commerce	$	0.5
Scotiabank	(0.3		)
Bank of Montreal	(5.2		)
Total assets (liabilities)	$	(5.0	)

If a legal right of set-off exists, we net the value of the derivative arrangements we have with the same counterparty in our consolidated balance sheets. At December 31, 2013, we recorded the fair value of our commodity derivatives on our balance sheet as current derivative assets of $0.5 million and current derivative liabilities of $5.6 million. At December 31, 2012, we recorded the fair value of our commodity derivatives on our balance sheet as current derivative assets of $16.5 million and current and non-current derivative liabilities of $1.9 million and $0.6 million, respectively.

For our economic hedges that we did not apply cash flow accounting to, any changes in their fair value occurring before their maturity (i.e., temporary fluctuations in value) are reported in gain (loss) on derivatives not designated as hedges and hedge ineffectiveness, net in our Consolidated Statements of Income. The commodity derivative instruments we had under cash flow accounting expired as of December 2013. Previous changes in the fair value of derivatives designated as cash flow hedges, to the extent they were effective in offsetting cash flows attributable to the hedged risk, were recorded in OCI until the hedged item was recognized into earnings. When the hedged item was recognized into earnings, it was reported in oil and natural gas revenues. Any change in fair value resulting from ineffectiveness was recognized in gain (loss) on derivatives not designated as hedges and hedge ineffectiveness, net.

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These gains (losses) are as follows at December 31:

	2013			2012			2011
	(In thousands)
Gain (loss) on derivatives not designated as hedges and hedge ineffectiveness, net
Gain (loss) on derivatives not designated as hedges, included are amounts settled during the period of ($1,764), $0, and ($711), respectively	$	(8,184	)	$	1,373		$	(1,047	)
Gain (loss) on ineffectiveness of cash flow hedges	(190		)	(2,616		)	2,749
	$	(8,374	)	$	(1,243	)	$	1,702

Stock and Incentive Compensation

During 2013, we granted awards covering 474,677 shares of restricted stock. These awards were granted as retention incentive awards. These stock awards had an estimated fair value as of the grant date of $21.3 million. Compensation expense will be recognized over the awards' three year vesting period. During 2013, we recognized $8.5 million in additional compensation expense and capitalized $1.9 million for these awards. During 2012, we granted awards covering 401,051 shares of restricted stock. These awards were granted as retention incentive awards and are being recognized over the awards' three year vesting period. During 2011, we granted awards covering 211,050 shares of restricted stock. These awards were granted as retention incentive awards and are being recognized over their two and three year vesting periods. No SAR awards were made during 2013, 2012, or 2011.

During 2013, we recognized compensation expense of $16.1 million for our restricted stock grants and capitalized $3.5 million of compensation cost for oil and natural gas properties.

Insurance

We are self-insured for certain losses relating to workers’ compensation, control of well, and employee medical benefits. Insured policies for other coverages contain deductibles or retentions per occurrence that range from $50,000 to $1.5 million. We have purchased stop-loss coverage in order to limit, to the extent feasible, per occurrence and aggregate exposure to certain types of claims. However, there is no assurance that the insurance coverages we have will adequately protect us against liability from all potential consequences. We have elected to use an ERISA governed occupational injury benefit plan to cover our drilling segment employees in Texas in lieu of covering them under Texas Workers’ Compensation. If insurance coverage becomes more expensive, we may choose to self-insure, decrease our limits, raise our deductibles or any combination of these rather than pay higher premiums.

Oil and Natural Gas Limited Partnerships and Other Entity Relationships.

We are the general partner of 16 oil and natural gas partnerships which were formed privately or publicly. Each partnership’s revenues and costs are shared under formulas set out in that partnership’s agreement. The partnerships repay us for contract drilling, well supervision and general and administrative expense. Related party transactions for contract drilling and well supervision fees are the related party’s share of such costs. These costs are billed on the same basis as billings to unrelated third parties for similar services. General and administrative reimbursements consist of direct general and administrative expense incurred on the related party’s behalf as well as indirect expenses assigned to the related parties. Allocations are based on the related party’s level of activity and are considered by us to be reasonable. During 2013, 2012, and 2011, the total we received for all of these fees was $0.5 million, $0.7 million, and $1.4 million, respectively. Our proportionate share of assets, liabilities, and net income relating to the oil and natural gas partnerships is included in our consolidated financial statements.

Effects of Inflation

The effect of inflation in the oil and natural gas industry is primarily driven by the prices for oil, NGLs, and natural gas. Increases in these prices increase the demand for our contract drilling rigs and services. This increase in demand in turn affects the dayrates we can obtain for our contract drilling services. During periods of higher demand for our drilling rigs we have experienced increases in labor costs as well as the costs of services to support our drilling rigs. Historically, during this same period, when oil, NGLs, and natural gas prices did decline, labor rates did not come back down to the levels existing before the

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increases. If commodity prices increase substantially for a long period, shortages in support equipment (such as drill pipe, third party services, and qualified labor) can result in additional increases in our material and labor costs. Increases in dayrates for drilling rigs also increase the cost of our oil and natural gas properties. How inflation will affect us in the future will depend on increases, if any, realized in our drilling rig rates, the prices we receive for our oil, NGLs, and natural gas, and the rates we receive for gathering and processing natural gas.

Off-Balance Sheet Arrangements

We do not currently utilize any off-balance sheet arrangements with unconsolidated entities to enhance liquidity and capital resource positions, or for any other purpose. However, as is customary in the oil and gas industry, we are subject to various contractual commitments.

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Results of Operations

2013 versus 2012

Following is a comparison of selected operating and financial data:

	2013			2012			Percent Change (1)
Total operating revenue	$	1,351,850,000		$	1,315,123,000		3	%
Net income	$	184,746,000		$	23,176,000		NM
Oil and Natural Gas:
Revenue	$	649,718,000		$	567,944,000		14	%
Operating costs excluding depreciation, depletion, amortization, and impairment	$	184,001,000		$	150,212,000		22	%
Average oil price received (Bbl)	$	95.06		$	92.60		3	%
Average NGL price received (Bbl)	$	31.79		$	31.58		1	%
Average natural gas price received (Mcf)	$	3.32		$	3.37		(1	)%
Oil production (Bbl)	3,360,000			3,279,000			2	%
NGLs production (Bbl)	3,914,000			2,796,000			40	%
Natural gas production (Mcf)	56,757,000			48,930,000			16	%
Depreciation, depletion, and amortization rate (Boe)	$	13.32		$	14.70		(9	)%
Depreciation, depletion, and amortization	$	226,498,000		$	211,347,000		7	%
Impairment of oil and natural gas properties	$	—		$	283,606,000		NM
Contract Drilling:
Revenue	$	414,778,000		$	529,719,000		(22	)%
Operating costs excluding depreciation	$	247,280,000		$	289,524,000		(15	)%
Percentage of revenue from daywork contracts	100		%	100		%
Average number of drilling rigs in use	65.0			73.9			(12	)%
Average dayrate on daywork contracts	$	19,646		$	19,949		(2	)%
Depreciation	$	71,194,000		$	81,007,000		(12	)%
Mid-Stream:
Revenue	$	287,354,000		$	217,460,000		32	%
Operating costs excluding depreciation, amortization, and impairment	$	243,406,000		$	187,292,000		30	%
Depreciation, amortization, and impairment	$	33,191,000		$	24,388,000		36	%
Gas gathered—Mcf/day	309,554			250,290			24	%
Gas processed—Mcf/day	140,584			133,987			5	%
Gas liquids sold—gallons/day	543,602			542,578			—	%
General and administrative expense	$	38,323,000		$	33,086,000		16	%
Gain on disposition of assets	$	(17,076,000	)	$	(253,000	)	NM
Other income (expense):
Interest expense, net	$	(15,015,000	)	$	(14,137,000	)	6	%
Loss on derivatives not designated as hedges and hedge ineffectiveness, net	$	(8,374,000	)	$	(1,243,000	)	NM
Other	$	(175,000	)	$	(132,000	)	33	%
Income tax expense	$	116,723,000		$	16,226,000		NM
Average interest rate	6.4		%	6.1		%	5	%
Average long-term debt outstanding	$	686,656,000		$	495,830,000		38	%

_________________________

(1) NM – A percentage calculation is not meaningful due to a zero-value denominator or a percentage change greater than 200.

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Oil and Natural Gas

Oil and natural gas revenues increased $81.8 million or 14% in 2013 as compared to 2012 primarily due to an 18% increase in equivalent production volumes. This production increase was the result of 2012 acquisitions and new wells completed in oil and NGLs rich prospects that were brought online. Oil production increased 2%, NGLs production increased 40%, and natural gas production increased 16%. Average oil prices between the comparative years increased 3% to $95.06 per barrel and NGLs prices increased 1% to $31.79 per barrel while prices for natural gas decreased 1% to $3.32 per Mcf.

Oil and natural gas operating costs increased $33.8 million or 22% between the comparative years of 2013 and 2012 due to increased well servicing costs, higher saltwater disposal expenses, and increased general and administrative expense .

Depreciation, depletion, and amortization (“DD&A”) increased $15.2 million or 7% primarily due to an 18% increase in equivalent production offset by a 9% decrease in our DD&A rate. The decrease in our DD&A rate resulted primarily from a reduction to the full cost pool from proceeds associated with the divestitures completed during 2013 and the non-cash ceiling test write-down of $167.7 million pre-tax ($104.4 million, net of tax) that occurred during the fourth quarter of 2012. Our DD&A expense on our oil and natural gas properties is calculated each quarter using period end reserve quantities adjusted for current period production.

We did not have any ceiling test write-downs during 2013. During the second quarter of 2012, we recorded a non-cash ceiling test write-down of $115.9 million pre-tax ($72.1 million, net of tax). During the fourth quarter of 2012, we recorded a non-cash ceiling test write down of $167.7 million pre-tax ($104.4 million, net of tax). If there are declines in the 12-month average prices, we may be required to record a write-down in future periods.

Contract Drilling

Drilling revenues decreased $114.9 million or 22% in 2013 as compared to 2012. The decrease was due primarily to a 12% decrease in the average number of drilling rigs in use and a 2% decrease in the average dayrate. Average drilling rig utilization decreased from 73.9 drilling rigs in 2012 to 65.0 drilling rigs in 2013. During 2012, we had eight drilling contracts that were terminated early by the operator. The early termination fees associated with these contracts included in revenues was approximately $22.6 million compared to $1.9 million for the termination of one long-term drilling contract in 2013.

Drilling operating costs decreased $42.2 million or 15% in 2013 compared to 2012. The decrease was due primarily to operating fewer rigs as per day direct cost increased $79 and indirect cost increased $0.6 million due to increased ad valoreum tax. Contract drilling depreciation decreased $9.8 million or 12% also due primarily to the decrease in utilization.

Mid-Stream

Our mid-stream revenues increased $69.9 million or 32% in 2013 as compared to 2012. The average price for natural gas sold increased 37%. Gas processing volumes per day increased 5% between the comparative years and NGLs sold per day were essentially unchanged between the comparative periods. The increase in volumes processed per day is primarily attributable to the volumes added from new wells connected to existing systems and increased capacity of processing facilities. NGLs sold volumes per day remained constant as an increase in volumes processed and upgrades to several of our processing facilities was offset from decreases due to one of our customers completing construction of their own processing plant and moving their volumes off our system during the second half of 2012. Gas gathering volumes per day increased 24% primarily from new well connections.

Operating costs increased $56.1 million or 30% in 2013 compared to 2012 primarily due to a 25% increase in prices paid for natural gas purchased. Depreciation, amortization, and impairment increased $8.8 million or 36% primarily due to additional assets placed into service throughout 2013.

62

General and Administrative

General and administrative expenses increased $5.2 million or 16% in 2013 compared to 2012. The increase was primarily due to increases in employee costs.

Gain on Disposition of Assets

Gain on disposition of assets increased $16.8 million in 2013 compared to 2012 primarily due to the sale of five drilling rigs.

Other Income (Expense)

Interest expense, net of capitalized interest, increased $0.9 million between the comparative years of 2013 and 2012. We capitalized interest based on the net book value associated with unproved properties not being amortized, the construction of additional drilling rigs, and the construction of gas gathering systems. Capitalized interest for 2013 was $33.7 million compared to $18.9 million in 2012, and was netted against our gross interest of $48.7 million and $33.0 million for 2013 and 2012, respectively. Our average interest rate increased from 6.1% to 6.4% and our average debt outstanding was $190.8 millionhigher in 2013 as compared to 2012 due to the issuance of $400.0 million of senior subordinated notes during the third quarter of 2012 to partially fund the Noble acquisition in the oil and natural gas segment.

Loss on derivatives not designated as hedges and hedge ineffectiveness, net increased from $1.2 million in 2012 to $8.4 million in 2013 primarily due to fluctuations in forward prices used to estimate the fair value in mark-to-market accounting.

Income Tax Expense

Income tax expense increased $100.5 million in 2013 compared to 2012 primarily due to increased income. Our effective tax rate was 38.7% for 2013 and 41.2% for 2012. This decrease is primarily due to the effect of permanent differences as they relate to the rise in pre-tax income. Current income tax expense was $16.0 million in 2013 compared to a current tax expense of $0.7 million for 2012. This increase is also primarily due to increased income. We paid $9.1 million in income taxes during 2013.

63

2012 versus 2011

	2012			2011			Percent Change (1)
Total operating revenue	$	1,315,123,000		$	1,207,503,000		9	%
Net income	$	23,176,000		$	195,867,000		(88	)%
Oil and Natural Gas:
Revenue (2)	$	567,944,000		$	514,614,000		10	%
Operating costs excluding depreciation, depletion, amortization, and impairment	$	150,212,000		$	131,271,000		14	%
Average oil price received (Bbl)	$	92.60		$	87.18		6	%
Average NGL price received (Bbl)	$	31.58		$	43.64		(28	)%
Average natural gas price received (Mcf)	$	3.37		$	4.26		(21	)%
Oil production (Bbl)	3,279,000			2,511,000			31	%
NGLs production (Bbl)	2,796,000			2,239,000			25	%
Natural gas production (Mcf)	48,930,000			44,104,000			11	%
Depreciation, depletion, and amortization rate (Boe)	$	14.70		$	15.06		(2	)%
Depreciation, depletion, and amortization	$	211,347,000		$	183,350,000		15	%
Impairment of oil and natural gas properties	$	283,606,000		$	—		NM
Contract Drilling:
Revenue	$	529,719,000		$	484,651,000		9	%
Operating costs excluding depreciation	$	289,524,000		$	269,899,000		7	%
Percentage of revenue from daywork contracts	100		%	100		%
Average number of drilling rigs in use	73.9			76.1			(3	)%
Average dayrate on daywork contracts	$	19,949		$	18,842		6	%
Depreciation	$	81,007,000		$	79,667,000		2	%
Mid-Stream:
Revenue	$	217,460,000		$	208,238,000		4	%
Operating costs excluding depreciation and amortization	$	187,292,000		$	174,859,000		7	%
Depreciation, amortization, and impairment	$	24,388,000		$	16,101,000		51	%
Gas gathered—Mcf/day	250,290			188,569			33	%
Gas processed—Mcf/day	133,987			92,940			44	%
Gas liquids sold—gallons/day	542,578			412,064			32	%
General and administrative expense	$	33,086,000		$	30,055,000		10	%
Gain (loss) on disposition of assets	$	(253,000	)	$	595,000		(143	)%
Other income (expense): (2)
Interest expense, net	$	(14,137,000	)	$	(4,167,000	)	NM
Gain/(loss) on derivatives not designated as hedges and hedge ineffectiveness, net	$	(1,243,000	)	$	1,702,000		(173	)%
Other	$	(132,000	)	$	(239,000	)	(45	)%
Income tax expense	$	16,226,000		$	123,135,000		(87	)%
Average interest rate	6.1		%	5.6		%	9	%
Average long-term debt outstanding	$	495,830,000		$	249,681,000		99	%

_________________________

(1) NM – A percentage calculation is not meaningful due to a zero-value denominator or a percentage change greater than 200.

(2) During the third quarter of 2012, we made the decision to prospectively use mark-to-market accounting for our economic hedges. Previously, we reported all designated and non-designated hedging gains (losses) in oil and natural gas revenues. We now reflect gains (losses) on non-designated hedges and the ineffectiveness from cash flow hedges along with other revenue items in other income (expense) below income from operations. Prior year amounts have been reclassified to conform to current year presentation.

64

Oil and Natural Gas

Oil and natural gas revenues increased $53.3 million or 10% in 2012 as compared to 2011 primarily due to an increase in equivalent production volumes of 18% and an increase in oil prices partially offset by decreases in prices for NGLs and natural gas. Average oil prices between the comparative years increased 6% to $92.60 per barrel while NGLs and natural gas prices decreased 28% to $31.58 per barrel and 21% to $3.37 per Mcf, respectively. In 2012, as compared to 2011, oil production increased 31%, NGLs production increased 25%, and natural gas production increased 11%. Production increased from our drilling program and primarily from wells acquired from Noble.

Oil and natural gas operating costs increased $18.9 million or 14% between the comparative years of 2012 and 2011 due to increased well servicing costs, higher saltwater disposal fees, and higher gross production taxes due to higher revenue in 2012. Lease operating expenses per Boe decreased 2% to $6.66.

DD&A increased $28.0 million or 15% primarily due to an 18% increase in equivalent production slightly offset by a 2% decrease in our DD&A rate. The decrease in our DD&A rate resulted primarily from a reduction to the full cost pool from proceeds associated with the divestitures completed during the third quarter of 2012 and the non-cash ceiling test write-down of $115.9 million pre-tax ($72.1 million, net of tax) that occurred during the second quarter of 2012. Our DD&A expense on our oil and natural gas properties is calculated each quarter utilizing period end reserve quantities adjusted for current period production.

During the fourth quarter of 2012, we recorded a non-cash ceiling test write down of $167.7 million pre-tax ($104.4 million, net of tax).

Contract Drilling

Drilling revenues increased $45.1 million or 9% in 2012 as compared to 2011 primarily due to $22.6 million in termination fees during 2012 for eight drilling rigs that were under long-term contracts but were terminated early by the operator and a 6% increase in the average dayrate, somewhat offset by a 3% decrease in rigs utilized. Average drilling rig utilization decreased from 76.1 drilling rigs in 2011 to 73.9 drilling rigs in 2012.

Drilling operating costs increased $19.6 million or 7% in 2012 compared to 2012 due largely to increased personnel costs and to a lesser extent for repair and maintenance costs.  The increased personnel cost was due to an increase in compensation for Rocky Mountain personnel in the first quarter of 2012 to keep qualified labor.  Contract drilling depreciation increased $1.3 million or 2% primarily due to increased capital expenditures associated with the construction of new drilling rigs and for upgrades to existing drilling rigs in our fleet.

Mid-Stream

Our mid-stream revenues increased $9.2 million or 4% in 2012 as compared to 2011 primarily due to higher NGLs volumes offset by a decrease in price. Gas processing volumes per day increased 44% between the comparative years and NGLs sold per day increased 32% between the comparative periods. The increase in volumes processed per day is primarily attributable to the volumes added from new wells connected to existing systems and increased capacity of processing facilities. NGLs sold volumes per day increased due to an increase in volumes processed and upgrades to several of our processing facilities . Gas gathering volumes per day increased 33% primarily from new well connections. The average price for NGLs sold decreased 27%.

Operating costs increased $12.4 million or 7% in 2012 compared to 2011 primarily due to a 42% increase in per day gas volumes purchased offset by a 30% decrease in prices paid for natural gas purchased. Depreciation, amortization, and impairment increased $8.3 million or 51% primarily due to the $1.2 million write-down of the carrying value of our Erick system and increased assets placed into service throughout 2012.

General and Administrative

General and administrative expenses increased $3.0 million or 10% in 2012 compared to 2011 primarily due to increases in employee costs.

65

Other Income (Expense)

Interest expense, net of capitalized interest, increased $10.0 million between the comparative years of 2012 and 2011. We capitalized interest based on the net book value associated with unproved properties not being amortized, the construction of additional drilling rigs, and the construction of gas gathering systems. Capitalized interest for 2012 was $18.9 million compared to $11.5 million in 2011, and was netted against our gross interest of $33.0 million and $15.6 million for 2012 and 2011, respectively. Our average interest rate increased from 5.6% to 6.1% and our average debt outstanding was $246.1 millionhigher in 2012 as compared to 2011 due to the issuance of $400.0 million of senior subordinated notes during the third quarter of 2012 to partially fund the Noble acquisition in the oil and natural gas segment.

Gain (loss) on derivatives not designated as hedges and hedge ineffectiveness, net fluctuates due to changes in forward prices used to estimate the fair value in mark-to-market accounting.

Income Tax Expense

Income tax expense decreased $106.9 million or 87% in 2012 compared to 2011 primarily due to decreased income. Our effective tax rate was 41.2% for 2012 and 38.6% for 2011. Current income tax expense was $0.7 million in 2012 compared to a current tax benefit of $2.4 million for 2011. We paid $5.1 million in income taxes during 2012.

Item 7A. Quantitative and Qualitative Disclosures about Market Risk

Our operations are exposed to market risks primarily as a result of changes in the prices for natural gas and oil and interest rates.

Commodity Price Risk.  Our major market risk exposure is in the prices we receive for our oil, NGLs, and natural gas production. Those prices are primarily driven by the prevailing worldwide price for crude oil and market prices applicable to our natural gas production. Historically, these prices have fluctuated and we expect they will continue to do so. The price of oil, NGLs, and natural gas also affects both the demand for our drilling rigs and the amount we can charge for the use of our drilling rigs. Based on our 2013 production, a $0.10 per Mcf change in what we are paid for our natural gas production would result in a corresponding $448,000 per month ($5.4 million annualized) change in our pre-tax cash flow. A $1.00 per barrel change in our oil price would have a $268,000 per month ($3.2 million annualized) change in our pre-tax operating cash flow and a $1.00 per barrel change in our NGLs prices would have a $310,000 per month ($3.7 million annualized) change in our pre-tax cash flow.

We use hedging transactions to manage the risk associated with price volatility. Our decisions regarding the amount and prices at which we choose to hedge certain of our products is based, in part, on our view of current and future market conditions. The transactions we use include financial price swaps under which we will receive a fixed price for our production and pay a variable market price to the contract counterparty. We do not hold or issue derivative instruments for speculative trading purposes.

At December 31, 2013, the following non-designated hedges were outstanding:

Term	Commodity	Hedged Volume	Weighted Average Fixed Price for Swaps	Hedged Market
Jan’14 – Dec’14	Natural gas – swap	80,000 MMBtu/day	$4.24	IF – NYMEX (HH)
Jan’14 – Dec’14	Natural gas – collar	10,000 MMBtu/day	$3.75-4.37	IF – NYMEX (HH)
Jan’14 – Jun’14	Crude oil – swap	500 Bbl/day	$100.03	WTI – NYMEX
Jan’14 – Dec’14	Crude oil – swap	3,000 Bbl/day	$91.77	WTI – NYMEX
Jan’14 – Dec’14	Crude oil – collar	4,000 Bbl/day	$90.00-96.08	WTI – NYMEX

66

Subsequent to December 31, 2013, the following non-designated hedges were entered into:

Term	Commodity	Hedged Volume	Weighted Average  Fixed Price for Swaps	Hedged Market
Mar'14	Natural gas – basis swap	30,000 MMBtu/day	$(0.095)	NGPL-TXOK
Mar'14	Natural gas – basis swap	60,000 MMBtu/day	$(0.027)	NGPL-Midcon

Interest Rate Risk.  Our interest rate exposure relates to our long-term debt under our credit agreement and the Notes. The credit agreement, at our election bears interest at variable rates based on the Prime Rate or the LIBOR Rate. At our election, borrowings under our credit agreement may be fixed at the LIBOR Rate for periods of up to 180 days. Based on our average outstanding long-term debt subject to a variable rate in 2013, a 1% increase in the floating rate would reduce our annual pre-tax cash flow by approximately $0.4 million. Under our Notes, we pay a fixed rate of interest of 6.625% per year (payable semi-annually in arrears on May 15 and November 15 of each year).

67

Item 8.     Financial Statements and Supplementary Data

Index to Financial Statements

Unit Corporation and Subsidiaries

	Page
Management’s Report on Internal Control over Financial Reporting	69
Consolidated Financial Statements:
Report of Independent Registered Public Accounting Firm	70
Consolidated Balance Sheets at December 31, 2013 and 2012	71
Consolidated Statements of Income for the Years Ended December 31, 2013, 2012, and 2011	73
Consolidated Statements of Comprehensive Income for the Years Ended December 31, 2013, 2012, and 2011	74
Consolidated Statements of Changes in Shareholders’ Equity for the Years Ended December 31, 2011, 2012, and 2013	75
Consolidated Statements of Cash Flows for the Years Ended December 31, 2013, 2012, and 2011	76
Notes to Consolidated Financial Statements	77

68

Management’s Report on Internal Control over Financial Reporting

Management of the company is responsible for establishing and maintaining adequate internal control over financial reporting. Internal control over financial reporting is defined in Rules 13a-15(f) or 15d-15(f) promulgated under the Securities Exchange Act of 1934 as a process designed by, or under the supervision of, the company’s principal executive and principal financial officers and effected by the company’s board of directors, management and other personnel, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles and includes those policies and procedures that:

• Pertain to the maintenance of records that in reasonable detail accurately and fairly reflect the transactions and dispositions of the assets of the company;

• Provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and

• Provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate. Internal control over financial reporting cannot provide absolute assurance of achieving financial reporting objectives because of its inherent limitations. Internal control over financial reporting is a process that involves human diligence and compliance and is subject to lapses in judgment and breakdowns resulting from human failures. Internal control over financial reporting also can be circumvented by collusion or improper management override. Because of such limitations, there is a risk that material misstatements may not be prevented or detected on a timely basis by internal control over financial reporting. However, these inherent limitations are known features of the financial reporting process. Therefore, it is possible to design into the process safeguards to reduce, though not eliminate, this risk.

The company’s management assessed the effectiveness of the company’s internal control over financial reporting as of December 31, 2013. In making this assessment, the company’s management used the criteria set forth in Internal Control—Integrated Framework (1992) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). Based on their assessment, the company’s management concluded that, as of December 31, 2013, the company’s internal control over financial reporting was effective based on those criteria.

The effectiveness of the company’s internal control over financial reporting as of December 31, 2013, has been audited by PricewaterhouseCoopers LLP, an independent registered public accounting firm, as stated in their report which appears herein.

69

Report of Independent Registered Public Accounting Firm

To Board of Directors and Shareholders of Unit Corporation:

In our opinion, the accompanying consolidated balance sheets and the related consolidated statements of income, comprehensive income, changes in shareholders’ equity, and cash flows present fairly, in all material respects, the financial position of Unit Corporation and its subsidiaries at December 31, 2013 and 2012, and the results of their operations and their cash flows for each of the three years in the period ended December 31, 2013, in conformity with accounting principles generally accepted in the United States of America. In addition, in our opinion, the financial statement schedule listed in the index appearing under item 15(a)(2), presents fairly, in all material respects, the information set forth therein when read in conjunction with the related consolidated financial statements. Also in our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2013, based on criteria established in Internal Control—Integrated Framework (1992) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). The Company’s management is responsible for these financial statements and financial statement schedule, for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting, included in the accompanying Management’s Report on Internal Control Over Financial Reporting. Our responsibility is to express opinions on these financial statements, on the financial statement schedule, and on the Company’s internal control over financial reporting based on our integrated audits. We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audits to obtain reasonable assurance about whether the financial statements are free of material misstatement and whether effective internal control over financial reporting was maintained in all material respects. Our audits of the financial statements included examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, and evaluating the overall financial statement presentation. Our audit of internal control over financial reporting included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and testing and evaluating the design and operating effectiveness of internal control based on the assessed risk. Our audits also included performing such other procedures as we considered necessary in the circumstances. We believe that our audits provide a reasonable basis for our opinions.

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (i) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (ii) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (iii) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

/s/ PricewaterhouseCoopers LLP

Tulsa, Oklahoma

February 25, 2014

70

UNIT CORPORATION AND SUBSIDIARIES CONSOLIDATED BALANCE SHEETS
	As of December 31,
	2013		2012
	(In thousands except share and par value amounts)
ASSETS
Current assets:
Cash and cash equivalents	$	18,593	$	974
Accounts receivable (less allowance for doubtful accounts of $5,342 and $5,343 at December 31, 2013 and 2012, respectively)	139,788		146,046
Materials and supplies	10,998		8,563
Current derivative asset (Note 13)	515		16,552
Current income tax receivable	—		901
Current deferred tax asset (Note 8)	13,585		8,765
Assets held for sale (Note 3)	15,621		—
Prepaid expenses and other	12,931		13,843
Total current assets	212,031		195,644
Property and equipment:
Oil and natural gas properties, on the full cost method:
Proved properties	4,235,712		3,822,381
Unproved properties not being amortized	545,588		521,659
Drilling equipment	1,477,093		1,478,645
Gas gathering and processing equipment	549,422		461,629
Transportation equipment	39,666		37,728
Other	87,435		62,840
	6,934,916		6,384,882
Less accumulated depreciation, depletion, amortization, and impairment	3,212,225		2,907,660
Net property and equipment	3,722,691		3,477,222
Debt issuance cost	11,844		13,432
Goodwill (Note 2)	62,808		62,808
Other intangible assets, net	—		680
Other assets	13,016		11,334
Total assets	$	4,022,390	$	3,761,120

71

UNIT CORPORATION AND SUBSIDIARIES CONSOLIDATED BALANCE SHEETS - (Continued)
	As of December 31,
	2013		2012
	(In thousands except share and par value amounts)
LIABILITIES AND SHAREHOLDERS’ EQUITY
Current liabilities:
Accounts payable	$	154,062	$	138,811
Accrued liabilities (Note 5)	64,363		54,098
Income taxes payable	7,474		—
Current derivative liabilities (Note 13)	5,561		1,948
Current portion of other long-term liabilities (Note 6)	12,113		12,282
Total current liabilities	243,573		207,139
Long-term debt (Note 6)	645,696		716,359
Non-current derivative liabilities (Note 13)	—		562
Other long-term liabilities (Note 6)	158,331		166,983
Deferred income taxes (Note 8)	801,398		695,776
Commitments and contingencies (Note 16)	—		—
Shareholders’ equity:
Preferred stock, $1.00 par value, 5,000,000 shares authorized, none issued	—		—
Common stock, $0.20 par value, 175,000,000 shares authorized, 49,107,004 and 48,581,948 shares issued as of December 31, 2013 and 2012, respectively	9,659		9,594
Capital in excess of par value	445,470		423,603
Accumulated other comprehensive income (net of tax of $0 and $4,892, respectively) (Note 15)	—		7,587
Retained earnings	1,718,263		1,533,517
Total shareholders’ equity	2,173,392		1,974,301
Total liabilities and shareholders’ equity	$	4,022,390	$	3,761,120

The accompanying notes are an integral part of the consolidated financial statements.

72

UNIT CORPORATION AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF INCOME

	Year Ended December 31,
	2013			2012			2011
	(In thousands except per share amounts)
Revenues:
Oil and natural gas	$	649,718		$	567,944		$	514,614
Contract drilling	414,778			529,719			484,651
Gas gathering and processing	287,354			217,460			208,238
Total revenues	1,351,850			1,315,123			1,207,503
Expenses:
Oil and natural gas:
Operating costs	184,001			150,212			131,271
Depreciation, depletion, and amortization	226,498			211,347			183,350
Impairment of oil and natural gas properties (Note 2)	—			283,606			—
Contract drilling:
Operating costs	247,280			289,524			269,899
Depreciation	71,194			81,007			79,667
Gas gathering and processing:
Operating costs	243,406			187,292			174,859
Depreciation, amortization, and impairment	33,191			24,388			16,101
General and administrative	38,323			33,086			30,055
(Gain) loss on disposition of assets	(17,076		)	(253		)	595
Total expenses	1,026,817			1,260,209			885,797
Income from operations	325,033			54,914			321,706
Other income (expense):
Interest, net	(15,015		)	(14,137		)	(4,167		)
Gain (loss) on derivatives not designated as hedges and hedge ineffectiveness, net	(8,374		)	(1,243		)	1,702
Other	(175		)	(132		)	(239		)
Total other expense	(23,564		)	(15,512		)	(2,704		)
Income before income taxes	301,469			39,402			319,002
Income tax expense (benefit):
Current	15,991			696			(2,416		)
Deferred	100,732			15,530			125,551
Total income taxes	116,723			16,226			123,135
Net income	$	184,746		$	23,176		$	195,867
Net income per common share:
Basic	$	3.83		$	0.48		$	4.11
Diluted	$	3.80		$	0.48		$	4.08

The accompanying notes are an integral part of the consolidated financial statements.

73

UNIT CORPORATION AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

	For Years ended December 31,
	2013			2012			2011
	(In thousands)
Net income	$	184,746		$	23,176		$	195,867
Other comprehensive income (loss), net of taxes:
Change in value of derivative instruments used as cash flow hedges, net of tax of ($4,717), $12,094, and $18,412	(7,349		)	18,635			29,384
Reclassification - derivative settlements, net of tax of ($249), ($20,171), and ($1,146)	(354		)	(31,682		)	(1,819		)
Ineffective portion of derivatives, net of tax of $74, $1,008, and ($1,061)	116			1,608			(1,688		)
Comprehensive income	$	177,159		$	11,737		$	221,744

The accompanying notes are an integral part of the consolidated financial statements.

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CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS’ EQUITY

Year Ended December 31, 2011, 2012, and 2013

	Common Stock		Capital In Excess of Par Value		Accumulated Other Comprehensive Income			Retained Earnings		Total
	(In thousands except share amounts)
Balances, January 1, 2011	$	9,493	$	393,501	$	(6,851	)	$	1,314,474	$	1,710,617
Comprehensive income:
Net income	—		—		—			195,867		195,867
Other comprehensive income (net of tax of $16,205)	—		—		25,877			—		25,877
Total comprehensive income										221,744
Activity in employee compensation plans (241,011 shares)	48		14,608		—			—		14,656
Balances, December 31, 2011	9,541		408,109		19,026			1,510,341		1,947,017
Comprehensive income (loss):
Net income	—		—		—			23,176		23,176
Other comprehensive loss (net of tax ($7,069))	—		—		(11,439		)	—		(11,439		)
Total comprehensive income										11,737
Activity in employee compensation plans (430,506 shares)	53		15,494		—			—		15,547
Balances, December 31, 2012	9,594		423,603		7,587			1,533,517		1,974,301
Comprehensive income (loss):
Net income	—		—		—			184,746		184,746
Other comprehensive loss (net of tax ($4,892))	—		—		(7,587		)	—		(7,587		)
Total comprehensive income										177,159
Activity in employee compensation plans (525,056 shares)	65		21,867		—			—		21,932
Balances, December 31, 2013	$	9,659	$	445,470	$	—		$	1,718,263	$	2,173,392

The accompanying notes are an integral part of the consolidated financial statements.

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	Year Ended December 31,
	2013			2012			2011
	(In thousands)
OPERATING ACTIVITIES:
Net income	$	184,746		$	23,176		$	195,867
Adjustments to reconcile net income (loss) to net cash provided (used) by operating activities:
Depreciation, depletion, amortization, and impairment	333,907			319,021			280,451
Impairment of oil and natural gas properties (Note 2)	—			283,606			—
(Gain) loss on derivatives	5,449			53,096			(159		)
Derivatives settled	1,161			(51,853		)	(2,254		)
(Gain) loss on disposition of assets	(17,076		)	(253		)	595
Deferred tax expense	100,732			15,530			125,551
Employee stock compensation plans	21,317			16,956			14,303
Bad debt expense	—			90			260
ARO liability accretion	5,450			4,615			3,838
Other, net	2,250			781			294
Changes in operating assets and liabilities increasing (decreasing) cash:
Accounts receivable	2,967			13,994			(38,731		)
Materials and supplies	(2,435		)	(361		)	(1,886		)
Prepaid expenses and other	1,813			(3,466		)	22,672
Accounts payable	15,715			10,187			(1,064		)
Accrued liabilities	17,198			6,911			9,245
Contract advances	1,137			(1,119		)	(527		)
Net cash provided by operating activities	674,331			690,911			608,455
INVESTING ACTIVITIES:
Capital expenditures	(703,984		)	(762,381		)	(728,551		)
Producing property and other acquisitions	—			(598,485		)	(50,013		)
Proceeds from disposition of property and equipment	120,910			281,824			10,328
Other	3,894			—			—
Net cash used in investing activities	(579,180		)	(1,079,042		)	(768,236		)
FINANCING ACTIVITIES:
Borrowings under line of credit	222,500			735,300			441,500
Payments under line of credit	(293,600		)	(714,200		)	(554,500		)
Proceeds from issuance of senior subordinated notes, net of debt issuance costs and discount	—			386,274			243,950
Proceeds from exercise of stock options	574			215			679
Tax benefit from stock options	8			121			1,174
Increase (decrease) in book overdrafts (Note 2)	(7,014		)	(19,440		)	26,454
Net cash provided by (used in) financing activities	(77,532		)	388,270			159,257
Net increase (decrease) in cash and cash equivalents	17,619			139			(524		)
Cash and cash equivalents, beginning of year	974			835			1,359
Cash and cash equivalents, end of year	$	18,593		$	974		$	835
Supplemental disclosure of cash flow information:
Cash paid during the year for:
Interest paid (net of capitalized)	$	12,485		$	14,880		$	3,470
Income taxes	$	9,100		$	5,116		$	655
Changes in accounts payable and accrued liabilities related to purchases of property, plant, and equipment	$	(6,550	)	$	(4,753	)	$	(28,036	)
Non-cash additions (reductions) to oil and natural gas properties related to asset retirement obligations	$	(17,952	)	$	45,097		$	23,345

The accompanying notes are an integral part of the consolidated financial statements.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

NOTE 1 – ORGANIZATION

Unless the context clearly indicates otherwise, references in this report to “Unit”, “Company”, “we”, “our”, “us”, or like terms refer to Unit Corporation and its subsidiaries.

We are primarily engaged in the land contract drilling of natural gas and oil wells, the exploration, development, acquisition, and production of oil and natural gas properties, and the buying, selling, gathering, processing, and treating of natural gas. Our operations are located principally in the United States and are organized in the following three reporting segments: (1) Oil and Natural Gas, (2) Contract Drilling, and (3) Mid-Stream.

Oil and Natural Gas.  Carried out by our subsidiary, Unit Petroleum Company, we explore, develop, acquire, and produce oil and natural gas properties for our own account. Our producing oil and natural gas properties, unproved properties, and related assets are located mainly in Oklahoma and Texas, and to a lesser extent, in Arkansas, Colorado, Kansas, Louisiana, Mississippi, Montana, New Mexico, North Dakota, Pennsylvania, and Wyoming.

Historically, our contract drilling segment experienced more demand for natural gas drilling as opposed to drilling for oil and NGLs. With the current natural gas market, operators have been focusing on drilling for oil and NGLs.

Contract Drilling.  Carried out by our subsidiary, Unit Drilling Company and its subsidiary Unit Texas Drilling, L.L.C., we drill onshore oil and natural gas wells for our own account as well as for a wide range of other oil and natural gas companies. Our drilling operations are mainly located in Oklahoma, Texas, Louisiana, Kansas, Wyoming, Colorado, Utah, Montana, and North Dakota.

Mid-Stream.  Carried out by our subsidiary, Superior Pipeline Company, L.L.C. and its subsidiaries, we buy, sell, gather, transport, process, and treat natural gas for our own account and for third parties. Mid-stream operations are performed in Oklahoma, Texas, Kansas, Pennsylvania, and West Virginia.

NOTE 2 – SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Principles of Consolidation.  The consolidated financial statements include the accounts of Unit Corporation and its subsidiaries. Our investment in limited partnerships is accounted for on the proportionate consolidation method, whereby our share of the partnerships’ assets, liabilities, revenues, and expenses are included in the appropriate classification in the accompanying consolidated financial statements.

Certain amounts in the accompanying consolidated financial statements for prior periods have been reclassified to conform to current year presentation. Certain financial statement captions were expanded or combined with no impact to consolidated net income or shareholders' equity.

Accounting Estimates.  The preparation of financial statements in conformity with generally accepted accounting principles (GAAP) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Drilling Contracts.  We recognize revenues and expenses generated from “daywork” drilling contracts as the services are performed, since we do not bear the risk of completion of the well. Under “footage” and “turnkey” contracts, we bear the risk of completion of the well; therefore, revenues and expenses are recognized when the well is substantially completed. Under this method, substantial completion is determined when the well bore reaches the negotiated depth as stated in the contract. The entire amount of a loss, if any, is recorded when the loss is determinable. The costs of uncompleted drilling contracts include expenses incurred to date on “footage” or “turnkey” contracts, which are still in process at the end of the period, and are included in other current assets. Typically, any one of these three types of contracts can be used for the drilling of one well which can take from 20 to 90 days. At December 31, 2013, all of our contracts were daywork contracts of which 23 were multi-well and had durations which ranged from six months to three years, 22 of which expire in 2014 and one expiring in 2015.

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These longer term contracts may contain a fixed rate for the duration of the contract or provide for the periodic renegotiation of the rate within a specific range from the existing rate.

Cash Equivalents and Book Overdrafts.  We include as cash equivalents all investments with maturities at date of purchase of three months or less which are readily convertible into known amounts of cash. Book overdrafts are checks that have been issued before the end of the period, but not presented to our bank for payment before the end of the period. There were no book overdrafts at December 31, 2013. At December 31, 2012, book overdrafts were $7.0 million and included in accounts payable.

Accounts Receivable.  Accounts receivable are carried on a gross basis, with no discounting, less an allowance for doubtful accounts. We estimate the allowance for doubtful accounts based on existing economic conditions, the financial condition of our customers, and the amount and age of past due accounts. Receivables are considered past due if full payment is not received by the contractual due date. Past due accounts are generally written off against the allowance for doubtful accounts only after all collection attempts have been unsuccessful.

Financial Instruments and Concentrations of Credit Risk and Non-performance Risk.  Financial instruments, which potentially subject us to concentrations of credit risk, consist primarily of trade receivables with a variety of oil and natural gas companies. We do not generally require collateral related to receivables. Our credit risk is considered to be limited due to the large number of customers comprising our customer base. Below are the third-party customers that accounted for more than 10% of our segment’s revenues:

	2013		2012		2011
Oil and Natural Gas:
Valero Energy Corporation	25	%	26	%	18	%
Sunoco Partners Marketing	8	%	8	%	10	%
Drilling:
QEP Resources, Inc.	18	%	15	%	22	%
Kodiak Oil and Gas Corp.	10	%	10	%	6	%
Mid-Stream:
ONEOK, Inc.	50	%	54	%	54	%
Tenaska Resources, LLC	16	%	7	%	1	%
Gavilon, LLC	—	%	10	%	19	%

We had a concentration of cash of $52.1 million and $40.4 million at December 31, 2013 and 2012, respectively with one bank.

The use of derivative transactions also involves the risk that the counterparties will be unable to meet the financial terms of the transactions. We considered this non-performance risk with regard to our counterparties and our own non-performance risk in our derivative valuation at December 31, 2013 and determined there was no material risk at that time. At December 31, 2013, the fair values of the net assets (liabilities) we had with each of the counterparties with respect to all of our commodity derivative transactions are listed in the table below:

	December 31, 2013
	(In millions)
Canadian Imperial Bank of Commerce	$	0.5
Scotiabank	(0.3		)
Bank of Montreal	(5.2		)
Total assets (liabilities)	$	(5.0	)

Property and Equipment.  Drilling equipment, natural gas gathering and processing equipment, transportation equipment, and other property and equipment are carried at cost. Renewals and improvements are capitalized while repairs and maintenance are expensed. Depreciation of drilling equipment is recorded using the units-of-production method based on

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estimated useful lives starting at 15 years , including a minimum provision of 20% of the active rate when the equipment is idle. We use the composite method of depreciation for drill pipe and collars and calculate the depreciation by footage actually drilled compared to total estimated remaining footage. Depreciation of other property and equipment is computed using the straight-line method over the estimated useful lives of the assets ranging from 3 to 15 years.

Realization of the carrying value of property and equipment is reviewed for possible impairment whenever events or changes in circumstances indicate that the carrying amount may not be recoverable. Assets are determined to be impaired if a forecast of undiscounted estimated future net operating cash flows directly related to the asset including disposal value if any, is less than the carrying amount of the asset. If any asset is determined to be impaired, the loss is measured as the amount by which the carrying amount of the asset exceeds its fair value. An estimate of fair value is based on the best information available, including prices for similar assets. Changes in such estimates could cause us to reduce the carrying value of property and equipment. In December 2012, our mid-stream segment had a $1.2 million write down of its Erick system. There was no volume from the wells connected to this system, the compressor and related surface equipment have been removed from this location and there is no future activity anticipated from this gathering system. No significant impairments were recorded in 2013 or 2011.

When property and equipment components are disposed of, the cost and the related accumulated depreciation are removed from the accounts and any resulting gain or loss is generally reflected in operations. For dispositions of drill pipe and drill collars, an average cost for the appropriate feet of drill pipe and drill collars is removed from the asset account and charged to accumulated depreciation and proceeds, if any, are credited to accumulated depreciation.

We record an asset and a liability equal to the present value of the expected future asset retirement obligation (ARO) associated with our oil and gas properties. The ARO asset is depreciated in a manner consistent with the depreciation of the underlying physical asset. We measure changes in the liability due to passage of time by accreting an interest charge. This amount is recognized as an increase in the carrying amount of the liability and as a corresponding accretion expense.

Capitalized Interest.  During 2013, 2012, and 2011, interest of approximately $33.7 million, $18.9 million, and $11.5 million, respectively, was capitalized based on the net book value associated with unproved properties not being amortized, the construction of additional drilling rigs, and the construction of gas gathering systems. Interest is being capitalized using a weighted average interest rate based on our outstanding borrowings.

Goodwill.  Goodwill represents the excess of the cost of acquisitions over the fair value of the net assets acquired. Goodwill is not amortized, but an impairment test is performed at least annually to determine whether the fair value has decreased and is performed additionally when events indicate an impairment may have occurred. Goodwill is all related to our contract drilling segment, and accordingly, the impairment test is generally based on the estimated discounted future net cash flows of our drilling segment, utilizing discount rates and other factors in determining the fair value of our drilling segment. Inputs in our estimated discounted future net cash flows include rig utilization, day rates, gross margin percentages, and terminal value (these are all considered level 3 inputs). No goodwill impairment was recorded for the years ended December 31, 2013, 2012, or 2011. There were no additions to goodwill in 2013, 2012, or 2011. Goodwill of $3.9 million is deductible for tax purposes.

Intangible Assets.  Intangible assets are capitalized and amortized over the estimated period benefited. Such amounts are reviewed for possible impairment whenever events or changes in circumstances indicate that the carrying amount may not be recoverable. No intangible asset impairment was recorded for the years ended December 31, 2013, 2012, or 2011. Amortization of $0.7 million, $1.2 million and $1.2 million was recorded in 2013, 2012, and 2011, respectively. Accumulated amortization for 2013 and 2012 was $18.0 million and $17.3 million, respectively. Our intangible assets became fully amortized in 2013, so no amortization is expected to be recorded in 2014.

Oil and Natural Gas Operations.  We account for our oil and natural gas exploration and development activities using the full cost method of accounting prescribed by the SEC. Accordingly, all productive and non-productive costs incurred in connection with the acquisition, exploration and development of our oil, NGLs, and natural gas reserves, including directly related overhead costs and related asset retirement costs, are capitalized and amortized on a units-of-production method based on proved oil and natural gas reserves. Directly related overhead costs of $21.5 million, $17.6 million, and $15.6 million were capitalized in 2013, 2012, and 2011, respectively. Independent petroleum engineers annually audit our internal evaluation of our reserves. The average rates used for depreciation, depletion, and amortization (DD&A) were $13.32, $14.70, and $15.06 per Boe in 2013, 2012, and 2011, respectively. The calculation of DD&A includes estimated future expenditures to be incurred in

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developing proved reserves and estimated dismantlement and abandonment costs, net of estimated salvage values. Our unproved properties totaling $545.6 million are excluded from the DD&A calculation.

No gains or losses are recognized on the sale, conveyance or other disposition of oil and natural gas properties unless a significant reserve amount to our total reserves is involved.

Revenue from the sale of oil and natural gas is recognized when title passes, net of royalties.

Under the full cost rules, at the end of each quarter, we review the carrying value of our oil and natural gas properties. The full cost ceiling is based principally on the estimated future discounted net cash flows from our oil and natural gas properties discounted at 10%. We use the unweighted arithmetic average of the commodity prices existing on the first day of each of the 12 months before the end of the reporting period to calculate discounted future revenues, unless prices were otherwise determined under contractual arrangements. In the event the unamortized cost of oil and natural gas properties being amortized exceeds the full cost ceiling, as defined by the SEC, the excess is charged to expense in the period during which such excess occurs. Once incurred, a write-down of oil and natural gas properties is not reversible.

For the quarter ended June 30, 2012, the 12-month average commodity prices, including the discounted value of our cash flow hedges, decreased significantly, resulting in a non-cash ceiling test write down of $115.9 million pre-tax ($72.1 million, net of tax). Our qualifying cash flow hedges used in the ceiling test determination at June 30, 2012, consisted of swaps and collars, covering production of 2.9 MMBoe in 2012 and 4.5 MMBoe in 2013. The effect of those hedges on the June 30, 2012 ceiling test was a $32.5 million pre-tax increase in the discounted net cash flows of our oil and natural gas properties.

For the quarter ended December 31, 2012, the 12-month average commodity prices, including the discounted value of our cash flow hedges, decreased further, resulting in an additional non-cash ceiling test write down of $167.7 million pre-tax ($104.4 million, net of tax). Our qualifying cash flow hedges used in the ceiling test determination at December 31, 2012, consisted of swaps and collars covering 6.9 MMBoe in 2013. The effect of those hedges on the December 31, 2012 ceiling test was a $29.8 million pre-tax increase in the discounted net cash flows of our oil and natural gas properties. Our oil and natural gas hedging is discussed in Note 13 of the Notes to our Consolidated Financial Statements.

At December 31, 2013, using the existing 12-month average commodity prices, we were not required to record a ceiling test write-down. All cash flow hedges expired at December 31, 2013 and did not effect the ceiling test determination.

If there are declines in the 12-month average prices, we may be required to record a write-down in future periods.

Our contract drilling segment provides drilling services for our exploration and production segment. Depending on their timing some of the drilling services performed on our properties are also deemed to be associated with the acquisition of an ownership interest in the property. Revenues and expenses for such services are eliminated in our income statement, with any profit recognized as a reduction in our investment in our oil and natural gas properties. The contracts for these services are issued under the same conditions and rates as the contracts entered into with unrelated third parties. We eliminated revenue of $64.3 million, $49.6 million, and $52.2 million for 2013, 2012, and 2011, respectively from our contract drilling segment and eliminated the associated operating expense of $46.9 million, $34.1 million, and $32.6 million during 2013, 2012, and 2011, respectively, yielding $17.4 million, $15.5 million, and $19.6 million during 2013, 2012, and 2011, respectively, as a reduction to the carrying value of our oil and natural gas properties.

Gas Gathering and Processing Revenue. Our gathering and processing segment recognizes revenue from the gathering and processing of natural gas and NGLs in the period the service is provided based on contractual terms.

Insurance.  We are self-insured for certain losses relating to workers’ compensation, control of well and employee medical benefits. Insured policies for other coverage contain deductibles or retentions per occurrence that range from $50,000 to $1.5 million. We have purchased stop-loss coverage in order to limit, to the extent feasible, per occurrence and aggregate exposure to certain types of claims. However, there is no assurance that the insurance coverage will adequately protect us against liability from all potential consequences. We have elected to use an ERISA governed occupational injury benefit plan to cover all Texas drilling operations in lieu of covering them under Texas Workers’ Compensation. If insurance coverage becomes more expensive, we may choose to self-insure, decrease our limits, raise our deductibles or any combination of these rather than pay higher premiums.

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Hedging Activities.  All derivatives are recognized on the balance sheet and measured at fair value. Derivatives that are designated as a cash flow hedge are measured by the effectiveness of the hedge, or the degree that the gain (loss) for the hedging instrument offsets the loss (gain) on the hedged item, at each reporting period. The effective portion of the gain (loss) on the derivative instrument is recognized in other comprehensive income as a component of equity and subsequently reclassified into earnings when the forecasted transaction affects earnings. The ineffective portion of a derivative’s change in fair value is required to be recognized in earnings immediately. Derivatives that are not designated for hedge treatment are recorded at fair value with gains (losses) recognized in earnings in the period of change. In August 2012, we determined on a prospective basis, to enter into economic hedges without electing cash flow hedge accounting. Our cash flow hedges (that existed before August 2012) expired in December 2013.

We do not engage in derivative transactions for speculative purposes. We document our risk management strategy, and for the cash flow hedges, we tested the hedge effectiveness at the inception of and during the term of each hedge.

Limited Partnerships.  Unit Petroleum Company is a general partner in 16 oil and natural gas limited partnerships sold privately and publicly. Some of our officers, directors, and employees own the interests in most of these partnerships. We share in each partnership’s revenues and costs in accordance with formulas set out in each of the limited partnership agreement. The partnerships also reimburse us for certain administrative costs incurred on behalf of the partnerships.

Income Taxes.  Measurement of current and deferred income tax liabilities and assets is based on provisions of enacted tax law; the effects of future changes in tax laws or rates are not included in the measurement. Valuation allowances are established where necessary to reduce deferred tax assets to the amount expected to be realized. Income tax expense is the tax payable for the year and the change during that year in deferred tax assets and liabilities.

The accounting for uncertainty in income taxes prescribes a recognition threshold and measurement attribute for the financial statement recognition and measurement of a tax position taken or expected to be taken in a return. Guidance is also provided on de-recognition, classification, interest and penalties, accounting in interim periods, disclosure, and transition. We have no unrecognized tax benefits and we do not expect any significant changes in unrecognized tax benefits in the next twelve months.

Natural Gas Balancing.  We use the sales method for recording natural gas sales. This method allows for recognition of revenue, which may be more or less than its share of pro-rata production from certain wells. We estimate our December 31, 2013 balancing position to be approximately 5.2 Bcf on under-produced properties and approximately 4.5 Bcf on over-produced properties. We have recorded a receivable of $2.0 million on certain wells where we estimate that insufficient reserves are available for us to recover the under-production from future production volumes. We have also recorded a liability of $3.8 million on certain properties where we believe there are insufficient reserves available to allow the under-produced owners to recover their under-production from future production volumes. Our policy is to expense the pro-rata share of lease operating costs from all wells as incurred. Such expenses relating to the balancing position on wells in which we have imbalances are not material.

Employee and Director Stock Based Compensation.  We recognize in our financial statements the cost of employee services received in exchange for awards of equity instruments based on the grant date fair value of those awards. The amount of our equity compensation cost relating to employees directly involved in exploration activities of our oil and natural gas segment is capitalized to our oil and natural gas properties. Amounts not capitalized to our oil and natural gas properties are recognized in general and administrative expense and operating costs of our business segments. We utilize the Black-Scholes option pricing model to measure the fair value of stock options and stock appreciation rights (SARs). The value of our restricted stock grants is based on the closing stock price on the date of the grants.

Impact of Financial Accounting Pronouncements.

Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists. In July 2013, ASU 2013-11 was issued because GAAP does not include explicit guidance on the financial statement presentation of an unrecognized tax benefit when a net operating loss carryforward, a similar tax loss, or a tax credit carryforward exists. The amendment provides explicit guidance on the financial statement presentation of an unrecognized tax benefit when a net operating loss carryforward, a similar tax loss, or a tax credit carryforward exists. The amendments in this Update are effective for fiscal years, and interim periods within those years, beginning after December 15, 2013. Early adoption is permitted.  The amendments should be applied prospectively to all unrecognized tax benefits that exist

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at the effective date. Retrospective application is permitted. We anticipate there will be no effect on our financial position or results of operations when adopted.

Inclusion of the Fed Funds Effective Swap Rate (or Overnight Index Swap Rate) as a Benchmark Interest Rate for Hedge Accounting Purposes. The FASB has issued ASU 2013-10, the amendments in this update permit the Fed Funds Effective Swap Rate (OIS) to be used as a U.S. benchmark interest rate for hedge accounting purposes under Topic 815, in addition to U.S. Treasury and LIBOR. The amendments also remove the restriction on using different benchmark rates for similar hedges. The amendments are effective prospectively for qualifying new or redesignated hedging relationships entered into on or after July 17, 2013. We do not have any interest rate hedges at this time.

Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income. In February 2013, the FASB issued ASU 2013-02 to address the presentation of comprehensive income related to ASU 2011-05. The standard requires that companies present, either in a single note or parenthetically on the face of the financial statements, the effect of significant amounts reclassified from each component of accumulated other comprehensive income based on its source (e.g., the release due to cash flow hedges from interest rate contracts) and the income statement line items affected by the reclassification (e.g., interest income or interest expense). The amendments are effective for fiscal years, and interim periods within those years, beginning after December 15, 2012. We chose to present the information in a single note (Note 15 of the Notes to our Consolidated Financial Statements).

Clarifying the Scope of Disclosures about Offsetting Assets and Liabilities. In January 2013, the FASB issued ASU 2013-01 to limit the scope of balance sheet offsetting disclosures contained in previously issued guidance in ASU 2011-11—Disclosures about Offsetting Assets and Liabilities. Specifically, ASU 2011-11 applies only to derivatives, repurchase agreements and reverse purchase agreements, and securities borrowing and securities lending transactions that are either offset in accordance with specific criteria contained in the FASB Accounting Standards or subject to a master netting arrangement or similar agreement.

Unlike IFRS, GAAP allows companies the option to present net in their balance sheets derivatives that are subject to a legally enforceable netting arrangement with the same party where rights of set-off are only available in the event of default or bankruptcy. To address these differences between IFRS and GAAP, the FASB and the IASB (the Boards) issued an exposure draft that proposed new criteria for netting that were narrower than the current conditions currently in GAAP. Nevertheless, in response to feedback from their respective stakeholders, the Boards decided to retain their existing offsetting models. Instead, the Boards have issued common disclosure requirements related to offsetting arrangements to allow investors to better compare financial statements prepared in accordance with IFRS or GAAP. The amendments in this ASU require an entity to disclose information about offsetting and related arrangements to enable users of its financial statements to understand the effect of those arrangements on its financial position. An entity is required to apply the amendments for annual reporting periods beginning on or after January 1, 2013, and interim periods within those annual periods. An entity should provide the disclosures required by those amendments retrospectively for all comparative periods presented. Derivatives subject to a master netting agreement are the only transactions in this accounting standard that affect us. We provide the effect of netting on our financial position in Note 14 of the Notes to our Consolidated Financial Statements.

NOTE 3 – ACQUISITIONS AND DIVESTITURES

On July 20, 2011, we acquired certain producing properties from an unaffiliated seller for approximately $12.3 million in cash, after post-closing adjustments, consisting of 30 operated wells and 59 non-operated well interests located in Beaver, Harper, and Ellis Counties,Oklahoma and Lipscomb County, Texas. The purchase price allocation was $8.4 million for proved properties and $3.9 million for acreage. The acquisition also included in excess of 12,000 net acres held by production available for future development.

On August 31, 2011, we acquired certain producing oil and gas properties for $30.5 million in cash, from an unaffiliated seller. Included in the acquisition were more than 500 wells located principally in the Oklahoma Arkoma Woodford and Hartshorne Coal plays along with other properties located throughout Oklahoma and Texas. The acquisition also included approximately 55,000 net acres of which 96% was held by production.

On September 17, 2012, we closed on the acquisition of certain oil and natural gas assets from Noble Energy, Inc. (Noble). After final closing adjustments, the acquisition included approximately 83,000 net acres primarily in the Granite Wash, Cleveland, and various other plays in western Oklahoma and the Texas Panhandle. The adjusted amount paid was $592.6 million.

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As of the effective date of the Noble acquisition (April 1, 2012), the estimated proved reserves of the acquired properties were 44 million barrels of oil equivalent (MMBoe). The acquisition added approximately 24,000 net acres to our Granite Wash core area in the Texas Panhandle with significant resource potential including approximately 600 horizontal drilling locations. The total acreage acquired in other plays in western Oklahoma and the Texas Panhandle was approximately 59,000 net acres and is characterized by high working interest and operatorship, 95% of which was held by production. We also received four gathering systems as part of the transaction and other miscellaneous assets.

The Noble acquisition was accounted for using the acquisition method under ASC 805, Business Combinations, which required that the acquired assets and liabilities be recorded at their fair values as of the acquisition date. The following table summarizes the adjusted purchase price and the estimated values of assets acquired and liabilities assumed. It was based on information available to us at the time these consolidated financial statements were prepared and we believe these estimates are reasonable(in thousands):

Adjusted Purchase Price
Total consideration given	$	592,627
Adjusted Allocation of Purchase Price
Oil and natural gas properties included in the full cost pool:
Proved oil and natural gas properties	$	260,799
Unproved oil and natural gas properties	353,343
Total oil and natural gas properties included in the full cost pool (1)	614,142
Gas gathering and processing equipment and other	25,163
Asset retirement obligation	(46,678		)
Fair value of net assets acquired	$	592,627

(1) We used a discounted cash flow model and made market assumptions as to future commodity prices, projections of estimated quantities of oil and natural gas reserves, expectations for timing and amount of future development and operating costs, projections of future rates of production, expected recovery rates and risk adjusted discount rates.

Pro Forma Financial Information    

The following unaudited pro forma financial information is presented to reflect the operations of the acquired assets as if the acquisition had been completed on January 1, 2011. The unaudited pro forma financial information was derived from the historical accounting records of the seller adjusted for estimated transaction costs, depreciation, depletion and amortization, ceiling test impact, general and administrative expenses, capitalized interest, and interest on the $400.0 million of Notes issued along with additional borrowings under our credit agreement to finance the acquisition. The unaudited pro forma financial information does not purport to be indicative of results of operations that would have occurred had the transaction occurred on the basis assumed above, nor is such information indicative of our expected future results of operations. The pro forma results of operations do not include any cost savings or other synergies that resulted, or may result, from the acquisition or any estimated costs that will be incurred to integrate these assets. Future results may vary significantly from the results reflected in this pro forma financial information because of future events and transactions, as well as other factors.

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	Twelve months ended December 31,
	2012		2011
	(In thousands, except per share amounts)
Pro forma:
Revenues	$	1,376,393	$	1,336,227
Net income	$	83,940	$	229,272
Net income per common share:
Basic	$	1.75	$	4.81
Diluted	$	1.74	$	4.78

From September 17, 2012, the date of the acquisition, through December 31, 2012, the portion of our revenues that were attributable to Noble were $21.4 million with a net loss of $0.8 million.

2012 Divestitures

We completed the following divestitures in 2012, the proceeds all of which reduced the net book value of the full cost pool with no gain or loss recognized:

•In September 2012, we sold our interest in certain Bakken properties. The proceeds, net of related expenses were $226.6 million.

•In September 2012, we sold certain oil and natural gas assets located in Brazos and Madison Counties, Texas, for approximately $44.1 million.

2012 Other

In conjunction with the acquisition and divestitures completed in the third quarter 2012, we took the necessary steps to secure like-kind exchange tax treatment for the transactions under Section 1031 of the Internal Revenue Code.

2013 Divestitures and Assets Held for Sale

In August 2013, we sold additional Bakken property interests. The proceeds, net of related expenses, were $57.1 million. In addition, we had other non-core asset sales with proceeds, net of related expenses, of $21.7 million for 2013. Proceeds from these dispositions reduced the net book value of the full cost pool with no gain or loss recognized.

During 2013, we sold five 2,000-3,000 horsepower drilling rigs to unaffiliated third-parties for a gain of $16.5 million. Four of our idle drilling rigs were classified as assets held for sale at December 31, 2013 and were sold to an unaffiliated third-party in the first quarter of 2014. The proceeds for the sale of these assets, less costs to sell, is expected to exceed the approximate $15.6 million net book value of the drilling rigs, both in the aggregate and for each drilling rig with an estimated gain of $10.4 million.

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NOTE 4 – EARNINGS PER SHARE

The following data shows the amounts used in computing earnings per share:

	Income (Numerator)		Weighted Shares (Denominator)	Per-Share Amount
	(In thousands except per share amounts)
For the year ended December 31, 2013:
Basic earnings per common share	$	184,746	48,218	$	3.83
Effect of dilutive stock options, restricted stock, and SARs	—		354	(0.03		)
Diluted earnings per common share	$	184,746	48,572	$	3.80
For the year ended December 31, 2012:
Basic earnings per common share	$	23,176	47,909	$	0.48
Effect of dilutive stock options, restricted stock, and SARs	—		245	—
Diluted earnings per common share	$	23,176	48,154	$	0.48
For the year ended December 31, 2011:
Basic earnings per common share	$	195,867	47,658	$	4.11
Effect of dilutive stock options, restricted stock, and SARs	—		293	(0.03		)
Diluted earnings per common share	$	195,867	47,951	$	4.08

The following options and their average exercise prices were not included in the computation of diluted earnings per share because the option exercise prices were greater than the average market price of our common stock for the years ended December 31:

	2013		2012		2011
Options and SARs	149,665		250,901		105,000
Average exercise price	$	58.41	$	52.72	$	61.24

NOTE 5 – ACCRUED LIABILITIES

Accrued liabilities consisted of the following as of December 31:

	2013		2012
	(In thousands)
Employee costs	$	27,633	$	24,632
Lease operating expenses	16,073		10,903
Interest payable	6,504		6,568
Deposits on assets held for sale	3,750		—
Taxes	2,313		7,308
Hedge settlements	416		160
Other	7,674		4,527
Total accrued liabilities	$	64,363	$	54,098

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NOTE 6 – LONG-TERM DEBT AND OTHER LONG-TERM LIABILITIES

Long-Term Debt

Long-term debt consisted of the following as of December 31:

	2013		2012
	(In thousands)
Credit agreement with an average interest rates of 2.9% at December 31, 2012	$	—	$	71,100
6.625% senior subordinated notes due 2021, net of unamortized discount of $4.3 million and $4.7 million at December 31, 2013 and 2012, respectively	645,696		645,259
Total long-term debt	$	645,696	$	716,359

Credit Agreement.    Under our Senior Credit Agreement (credit agreement), the amount available to be borrowed is the lesser of the amount we elect (from time to time) as the commitment amount ($500.0 million) or the value of the borrowing base as determined by the lenders ($800.0 million), but in either event not to exceed the maximum credit agreement amount of $900.0 million. We are charged a commitment fee ranging from 0.375 to 0.50 of 1% on the amount available but not borrowed. The rate varies based on the amount borrowed as a percentage of the amount of the total borrowing base. The credit agreement matures as of September 13, 2016. In connection with this new amendment, we paid $1.5 million in origination, agency, syndication, and other related fees when the credit agreement was amended on September 5, 2012. We are amortizing these fees over the life of the credit agreement.

The amount of the borrowing base, which is subject to redetermination by the lenders on April 1st and October 1st of each year, is based primarily on a percentage of the discounted future value of our oil and natural gas reserves. There was no change to the borrowing base as of the October 1, 2013 redetermination. We or the lenders may request a onetime special redetermination of the borrowing base between each scheduled redetermination. In addition, we may request a redetermination following the completion of an acquisition that meets the requirements set forth in the credit agreement.

At our election, any part of the outstanding debt under the credit agreement may be fixed at a London Interbank Offered Rate (LIBOR). LIBOR interest is computed as the sum of the LIBOR base for the applicable term plus 1.75% to 2.50% depending on the level of debt as a percentage of the borrowing base and is payable at the end of each term, or every 90 days, whichever is less. Borrowings not under LIBOR bear interest at the Prime Rate, which cannot be less than LIBOR plus 1.00%. Interest is payable at the end of each month, and the principal may be repaid in whole or in part at anytime, without a premium or penalty. At December 31, 2013, we had no outstanding borrowings under our credit agreement.

We can use borrowings for financing general working capital requirements for (a) exploration, development, production and acquisition of oil and gas properties, (b) acquisitions and operation of mid-stream assets, (c) issuance of standby letters of credit, (d) contract drilling services, and (e) general corporate purposes.

The credit agreement prohibits, among other things:

• the payment of dividends (other than stock dividends) during any fiscal year in excess of 30% of our consolidated net income for the preceding fiscal year;

• the incurrence of additional debt with certain limited exceptions; and

• the creation or existence of mortgages or liens, other than those in the ordinary course of business, on any of our properties, except in favor of our lenders.

The credit agreement also requires that we have at the end of each quarter:

• a current ratio (as defined in the credit agreement) of not less than 1 to 1; and

• a leverage ratio of funded debt to consolidated EBITDA (as defined in the credit agreement) for the most recently ended rolling four fiscal quarters of no greater than 4 to 1.

As of December 31, 2013, we were in compliance with the covenants contained in the credit agreement.

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6.625% Senior Subordinated Notes.    On May 18, 2011, we completed the sale of $250.0 million aggregate principal amount of registered senior subordinated notes due 2021 (the 2011 Notes) which bear interest at a rate of 6.625% per year. The Notes were issued at par and mature on May 15, 2021. We received net proceeds of approximately $244.0 million after deducting fees of approximately $6.0 million. Those fees are being amortized as deferred financing costs over the life of the Notes. We used the net proceeds to repay outstanding borrowings under our credit agreement, which was $220.3 million on May 18, 2011. The remaining proceeds were used for general working capital purposes.

On July 24, 2012, we completed the sale of $400.0 million aggregate principal amount of unregistered senior subordinated notes (the 2012 Notes) due May 15, 2021, which will bear interest at a rate of 6.625% per year. The 2012 Notes were sold at 98.75% of par plus accrued interest from May 15, 2012. We used the net proceeds from the offering to partially finance the acquisition of oil and natural gas properties from Noble. We incurred $8.7 million of fees that are being amortized as debt issuance cost over the life of the 2012 Notes. 

On November 13, 2012, we registered with the SEC on Form S-4 an offer to exchange the 2012 Notes for additional notes with materially identical terms to our existing 2011 Notes, which were registered under the Securities Act. On January 7, 2013, the exchange of the 2012 Notes was completed. The notes issued in exchange for the 2012 Notes are now registered and treated as a single series of debt securities with the 2011 Notes, bringing the total to $650.0 million aggregate principal amount of 6.625% senior subordinated notes (the Notes). The interest is payable semi-annually (in arrears) on May 15 and November 15 of each year, and the Notes will mature on May 15, 2021.

The Notes are guaranteed by our 100% owned domestic direct and indirect subsidiaries (the Guarantors). Unit, as the parent company, has no independent assets or operations. The guarantees registered under the registration statement are full and unconditional and joint and several, subject to certain automatic customary releases, including sale, disposition, or transfer of the capital stock or substantially all of the assets of a subsidiary guarantor, exercise of legal defeasance option or covenant defeasance option, and designation of a subsidiary guarantor as unrestricted in accordance with the Indenture. Any subsidiaries of Unit other than the Guarantors are minor. There are no significant restrictions on the ability of Unit to receive funds from its subsidiaries through dividends, loans, advances or otherwise.

The Notes are subject to an Indenture dated as of May 18, 2011, between us and Wilmington Trust, National Association (successor to Wilmington Trust FSB), as Trustee (the Trustee), as supplemented by the First Supplemental Indenture thereto dated as of May 18, 2011, between us, the Guarantors, and the Trustee, and as further supplemented by that the Second Supplemental Indenture thereto dated as of January 7, 2013, between us, the Guarantors and the Trustee, establishing the terms and providing for the issuance of the Notes (as supplemented, the 2011 Indenture). The discussion of the Notes in this report is qualified by and subject to the actual terms of the 2011 Indenture.

On and after May 15, 2016, we may redeem all or, from time to time, a part of the Notes at certain redemption prices, plus accrued and unpaid interest. Before May 15, 2014, we may on any one or more occasions redeem up to 35% of the original principal amount of the Notes with the net cash proceeds of one or more equity offerings at a redemption price of 106.625% of the principal amount, plus accrued and unpaid interest, if any, to the redemption date, provided that at least 65% of the original principal amount of the Notes remains outstanding after each redemption. In addition, at any time before May 15, 2016, we may redeem the Notes, in whole or in part, at a redemption price equal to 100% of the principal amount plus a “make whole” premium, plus accrued and unpaid interest, if any, to the redemption date. If a “change of control” occurs, subject to certain conditions, we must offer to repurchase from each holder all or any part of that holder’s Notes at a purchase price in cash equal to 101% of the principal amount of the Notes plus accrued and unpaid interest, if any, to the date of purchase. The Indenture contains customary events of default. The Indenture contains covenants that, among other things, limit our ability and the ability of certain of our subsidiaries to incur or guarantee additional indebtedness; pay dividends on our capital stock or redeem capital stock or subordinated indebtedness; transfer or sell assets; make investments; incur liens; enter into transactions with our affiliates; and merge or consolidate with other companies. We were in compliance with all covenants of the Notes as of December 31, 2013.

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Other Long-Term Liabilities

Other long-term liabilities consisted of the following as of December 31:

	2013		2012
	(In thousands)
ARO liability	$	133,657	$	146,159
Workers’ compensation	20,041		18,517
Separation benefit plans	9,382		7,972
Gas balancing liability	3,775		3,838
Deferred compensation plan	3,589		2,779
	170,444		179,265
Less current portion	12,113		12,282
Total other long-term liabilities	$	158,331	$	166,983

Estimated annual principal payments under the terms of debt and other long-term liabilities from 2014 through 2018 are $12.1 million, $2.8 million, $40.4 million, $4.2 million, and $3.5 million, respectively.

NOTE 7 – ASSET RETIREMENT OBLIGATIONS

We are required to record the estimated fair value of the liabilities relating to the future retirement of our long-lived assets (AROs). Our oil and natural gas wells are plugged and abandoned when the oil and natural gas reserves in those wells are depleted or the wells are no longer able to produce. The plugging and abandonment liability for a well is recorded in the period in which the obligation is incurred (at the time the well is drilled or acquired). None of our assets are restricted for purposes of settling these AROs. All of our AROs relate to plugging costs associated with our oil and gas wells.

The following table shows certain information about our AROs for the periods indicated:

	2013			2012
	(In thousands)
ARO liability, January 1:	$	146,159		$	96,446
Accretion of discount	5,450			4,615
Liability incurred	4,857			56,650			(1)
Liability settled	(4,751		)	(2,788		)
Liability sold	(2,622		)	(1,258		)
Revision of estimates (2)	(15,436		)	(7,506		)
ARO liability, December 31:	133,657			146,159
Less current portion	2,954			2,953
Total long-term ARO liability	$	130,703		$	143,206

_________________________

(1) The liability incurred increased $46.7 million related to the Noble properties acquired in September 2012.

(2) Plugging liability estimates were revised in both 2013 and 2012 for updates in the cost of services used to plug wells over the preceding year. We had various upward and downward adjustments as well as changes in estimated timing of cash flows.

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NOTE 8 – INCOME TAXES

A reconciliation of income tax expense, computed by applying the federal statutory rate to pre-tax income to our effective income tax expense is as follows:

	2013		2012		2011
	(In thousands)
Income tax expense computed by applying the statutory rate	$	105,514	$	13,791	$	111,651
State income tax, net of federal benefit	8,290		1,084		8,941
Statutory depletion and other	2,919		1,351		2,543
Income tax expense	$	116,723	$	16,226	$	123,135

For the periods indicated, the total provision for income taxes consisted of the following:

	2013		2012			2011
	(In thousands)
Current taxes:
Federal	$	15,845	$	2,084		$	(3,159	)
State	146		(1,388		)	743
	15,991		696			(2,416		)
Deferred taxes:
Federal	87,839		13,768			109,363
State	12,893		1,762			16,188
	100,732		15,530			125,551
Total provision	$	116,723	$	16,226		$	123,135

Deferred tax assets and liabilities are comprised of the following at December 31:

	2013			2012
	(In thousands)
Deferred tax assets:
Allowance for losses and nondeductible accruals	$	77,285		$	74,890
Net operating loss carryforward	61,055			56,020
Alternative minimum tax credit carryforward	17,258			1,972
	155,598			132,882
Deferred tax liability:
Depreciation, depletion, amortization and impairment	(943,411		)	(819,893		)
Net deferred tax liability	(787,813		)	(687,011		)
Current deferred tax asset	13,585			8,765
Non-current—deferred tax liability	$	(801,398	)	$	(695,776	)

Realization of the deferred tax assets are dependent on generating sufficient future taxable income. Although realization is not assured, management believes it is more likely than not that the deferred tax asset will be realized. The amount of the deferred tax asset considered realizable, however, could be reduced in the near-term if estimates of future taxable income are reduced. At December 31, 2013, we have federal net operating loss carryforwards of approximately $146.5 million which expire from 2015 to 2033.

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NOTE 9 – EMPLOYEE BENEFIT PLANS

Under our 401(k) Employee Thrift Plan, employees who meet specified service requirements may contribute a percentage of their total compensation, up to a specified maximum, to the plan. We may match each employee’s contribution, up to a specified maximum, in full or on a partial basis. We made discretionary contributions under the plan of 111,995, 95,598, and 71,742 shares of common stock and recognized expense of $6.0 million, $5.5 million, and $4.3 million in 2013, 2012, and 2011, respectively.

We provide a salary deferral plan (Deferral Plan) which allows participants to defer the recognition of salary for income tax purposes until actual distribution of benefits which occurs at either termination of employment, death or certain defined unforeseeable emergency hardships. The liability recorded under the Deferral Plan at December 31, 2013 and 2012 was $3.6 million and $2.8 million, respectively. We recognized payroll expense and recorded a liability at the time of deferral.

Effective January 1, 1997, we adopted a separation benefit plan (Separation Plan). The Separation Plan allows eligible employees whose employment is involuntarily terminated or, in the case of an employee who has completed 20 years of service, voluntarily or involuntarily terminated, to receive benefits equivalent to four weeks salary for every whole year of service completed up to a maximum of 104 weeks. To receive payments, the recipient must waive any claims against us in exchange for receiving the separation benefits. On October 28, 1997, we adopted a Separation Benefit Plan for Senior Management (Senior Plan). The Senior Plan provides certain officers and key executives of Unit with benefits generally equivalent to the Separation Plan. The Compensation Committee of the Board of Directors has absolute discretion in the selection of the individuals covered in this plan. On May 5, 2004 we also adopted the Special Separation Benefit Plan (Special Plan). This plan is identical to the Separation Benefit Plan with the exception that the benefits under the plan vest on the earliest of a participant’s reaching the age of 65 or serving 20 years with the company.

On December 31, 2008, we amended all three Plans to be in compliance with Section 409A of the Internal Revenue Code of 1986, as amended. The key amendments to the Plans address, among other things, when distributions may be made, the timing of payments, and the circumstances under which employees become eligible to receive benefits. None of the amendments materially increase the benefits, grants or awards issuable under the Plans. We recognized expense of $2.4 million, $2.2 million, and $1.9 million in 2013, 2012, and 2011, respectively, for benefits associated with anticipated payments from these separation plans.

We have entered into key employee change of control contracts with three of our current executive officers. These severance contracts have an initial three-year term that is automatically extended for one year on each anniversary, unless a notice not to extend is given by us. If a change of control of the company, as defined in the contracts, occurs during the term of the severance contract, then the contract becomes operative for a fixed three-year period. The severance contracts generally provide that the executive’s terms and conditions for employment (including position, work location, compensation, and benefits) will not be adversely changed during the three-year period after a change of control. If the executive’s employment is terminated (other than for cause, death, or disability), the executive terminates for good reason during such three-year period, or the executive terminates employment for any reason during the 30-day period following the first anniversary of the change of control, and on certain terminations prior to a change of control or in connection with or in anticipation of a change of control, the executive is generally entitled to receive, in addition to certain other benefits, any earned but unpaid compensation; up to 2.9 times the executive’s base salary plus annual bonus (based on historic annual bonus); and the company matching contributions that would have been made had the executive continued to participate in the company’s 401(k) plan for up to an additional three years.

The severance contract provides that the executive is entitled to receive a payment in an amount sufficient to make the executive whole for any excise tax on excess parachute payments imposed under Section 4999 of the Code. As a condition to receipt of these severance benefits, the executive must remain in the employ of the company prior to change of control and render services commensurate with his position.

NOTE 10 – TRANSACTIONS WITH RELATED PARTIES

Unit Petroleum Company serves as the general partner of 16 oil and gas limited partnerships. Three were formed for investment by third parties and 13 (the employee partnerships) were formed to allow certain of our qualified employees and our directors to participate in Unit Petroleum’s oil and gas exploration and production operations. The partnerships for the third party investments were formed in 1984 and 1986. Employee partnerships have been formed for each year beginning with 1984

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and ending with 2011. Interests in the employee partnerships were offered to the employees of Unit and its subsidiaries whose annual base compensation was at least a specified amount ($36,000 for 2011) and to the directors of Unit.

The employee partnerships formed in 1984 through 1990 were consolidated into a single consolidating partnership in 1993 and the employee partnerships formed in 1991 through 1999 were also consolidated into the consolidating partnership in 2002. The consolidation of the 1991 through the 1999 employee partnerships was done by the general partners under the authority contained in the respective partnership agreements and did not involve any vote, consent or approval by the limited partners. The employee partnerships have each had a set percentage (ranging from 1% to 15%) of our interest in most of the oil and natural gas wells we drill or acquire for our own account during the particular year for which the partnership was formed. The total interest the employees have in our oil and natural gas wells by participating in these partnerships does not exceed one percent.

Amounts received in the years ended December 31, from both public and private Partnerships for which Unit is a general partner are as follows:

	2013		2012		2011
	(In thousands)
Contract drilling	$	16	$	246	$	352
Well supervision and other fees	$	470	$	434	$	396
General and administrative expense reimbursement	$	36	$	39	$	610

Related party transactions for contract drilling and well supervision fees are the related party’s share of such costs. These costs are billed to related parties on the same basis as billings to unrelated parties for such services. General and administrative reimbursements are both direct general and administrative expense incurred on the related party’s behalf and indirect expenses allocated to the related parties. Such allocations are based on the related party’s level of activity and are considered by management to be reasonable.

One of our directors, G. Bailey Peyton IV, also serves as the President and a significant investor in Upland Resources, L.L.C., a small independent oil and natural gas exploration company, and as Manager of Peyton Royalties, LP, a family-controlled limited partnership that owns royalty rights in wells in the Texas and Oklahoma Panhandles. In the ordinary course of business, there were no wells drilled for Upland Resources, L.L.C. during 2013 or 2011 and the Company drilled three wells during 2012, under its usual standard dayrate contracts, in which Upland Resources, L.L.C. was a participant, for which the Company received payments of approximately $1.6 million from Upland Resources, L.L.C. The Company also paid royalties during 2013 and 2012, primarily due to its status as successor in interest to prior transactions and as operator of the wells involved and, in some cases, as lessee, with respect to certain wells in which Mr. Peyton, members of Mr. Peyton's family, and Peyton Royalties, LP have an interest. Such payments totaled approximately $1.4 million, $1.2 million, and $0.7 million during 2013, 2012, and 2011, respectively. Our Audit Committee and the board, in accordance with the Policy, have determined that these arrangements are in the best interest of the Company.

NOTE 11 – SHAREHOLDER RIGHTS PLAN

We maintain a Shareholder Rights Plan (the Plan) designed to deter coercive or unfair takeover tactics, to prevent a person or group from gaining control of us without offering fair value to all our shareholders and to deter other abusive takeover tactics, which are not in the best interest of shareholders.

Under the terms of the Plan, each share of common stock is accompanied by one right, which given certain acquisition and business combination criteria, entitles the shareholder to purchase from us one one-hundredth of a newly issued share of Series A Participating Cumulative Preferred Stock at a price subject to adjustment by us or to purchase from an acquiring company certain shares of its common stock or the surviving company’s common stock at 50% of its value.

The rights become exercisable 10 days after we learn that an acquiring person (as defined in the Plan) has acquired 15% or more of the outstanding common stock of Unit or 10 business days after the commencement of a tender offer, which would result in a person owning 15% or more of our shares. We can redeem the rights for $0.01 per right at any date before the earlier

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of (i) the close of business on the 10th day following the time we learn that a person has become an acquiring person or (ii) May 19, 2015 (the “Expiration Date”). The rights will expire on the Expiration Date, unless redeemed earlier by Unit.

NOTE 12 – STOCK-BASED COMPENSATION

For restricted stock awards and stock options, we had:

	2013		2012		2011
	(In millions)
Recognized stock compensation expense	$	16.1	$	11.4	$	10.0
Capitalized stock compensation cost for our oil and natural gas properties	3.5		2.7		2.5
Tax benefit on stock based compensation	6.2		4.5		3.9

The remaining unrecognized compensation cost related to unvested awards at December 31, 2013 is approximately $14.2 million with $2.4 million of this amount anticipated to be capitalized. The weighted average period of time over which this cost will be recognized is 0.8 years.

At our annual meeting of stockholders held on May 2, 2012, our stockholders approved the Unit Corporation Stock and Incentive Compensation Plan Amended and Restated May 2, 2012 (the amended plan).   The amended plan allows us to grant stock-based and cash-based compensation to our employees (including employees of subsidiaries) as well as non-employee directors.  The amended plan succeeds the Non-employee Directors' 2000 Stock Option Plan (the option plan), and no new awards will be issued under the option plan.

The amended plan allows for the issuance of 3.3 million shares of common stock with 2.0 million shares being the maximum number of shares that can be issued as “incentive stock options.” Awards under this plan may be granted in any one or a combination of the following:

• incentive stock options under Section 422 of the Internal Revenue Code;

• non-qualified stock options;

• performance shares;

• performance units;

• restricted stock;

• restricted stock units;

• stock appreciation rights;

• cash based awards; and

• other stock-based awards.

This plan also contains various limits as to the amount of awards that can be given to an employee in any fiscal year. All awards are generally subject to the minimum vesting periods, as determined by our Compensation Committee and included in the award agreement.

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The table below shows the estimates of the fair value of stock options granted to our non-employee directors under the option plan in 2011 using the Black-Scholes model and applying the estimated values also presented in the table:

	2011
Options granted	31,500
Estimated fair value (in millions)	$	0.7
Estimate of stock volatility	0.48
Estimated dividend yield	—		%
Risk free interest rate	2		%
Expected life range based on prior experience (in years)	5
Forfeiture rate	—		%

Expected volatilities are based on the historical volatility of our stock. We use historical data to estimate option exercise and termination rates within the model and aggregate groups that have similar historical exercise behavior for valuation purposes. To date, we have not paid dividends on our stock. The risk free interest rate is computed from the United States Treasury Strips rate using the term over which it is anticipated the grant will be exercised.

SARs

Activity pertaining to SARs granted under the Unit Corporation Stock and Incentive Compensation Plan is as follows:

	Number of Shares	Weighted Average Grant Date Price
Outstanding at January 1, 2011	145,901	$	46.59
Granted	—	—
Exercised	—	—
Forfeited	—	—
Outstanding at December 31, 2011	145,901	46.59
Granted	—	—
Exercised	—	—
Forfeited	—	—
Outstanding at December 31, 2012	145,901	46.59
Granted	—	—
Exercised	—	—
Forfeited	—	—
Outstanding at December 31, 2013	145,901	$	46.59

There were no SARs granted in 2013, 2012, or 2011. The SARs expire after 10 years from the date of the grant. In 2013 and 2012, no shares vested. In 2011, 33,745 shares vested. The aggregate intrinsic value of the 145,901 shares outstanding at December 31, 2013 was $0.7 million with a weighted average remaining contractual term of 3.6 years.

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Restricted Stock

Activity pertaining to restricted stock awards granted under the amended plan is as follows:

Employees	Number of Shares		Weighted Average Grant Date Price
Nonvested at January 1, 2011	446,125		$	47.39
Granted	211,050		55.91
Vested	(190,262	)	43.32
Forfeited	(18,952	)	44.55
Nonvested at December 31, 2011	447,961		47.44
Granted	376,445		47.37
Vested	(220,788	)	45.66
Forfeited	(14,091	)	45.37
Nonvested at December 31, 2012	589,527		48.11
Granted	453,549		48.20
Vested	(248,003	)	46.46
Forfeited	(18,330	)	47.85
Nonvested at December 31, 2013	776,743		$	48.70

Non-Employee Directors	Number of Shares		Weighted Average Grant Date Price
Nonvested at December 31, 2011	—		$	—
Granted	24,606		40.23
Vested	—		—
Forfeited	—		—
Nonvested at December 31, 2012	24,606		$	40.23
Granted	21,128		41.65
Vested	(10,030	)	40.23
Forfeited	—		—
Nonvested at December 31, 2013	35,704		$	41.07

The restricted stock awards vest in periods ranging from 2 to 3 years, except for a portion of those granted to certain executive officers. As to those executive officers, 30% of the shares granted, or 57,405 shares in 2013, 46,441 shares in 2012, and 20,062 shares in 2011 (the performance shares), will cliff vest in the first half of 2016, 2015, and 2014, respectively. The actual number of performance shares that vest in 2014, 2015, and 2016 will be based on the company’s achievement of certain performance criteria over a three-year period, and will range from 0% to 150% of the restricted shares granted as performance shares. Based on the performance criteria, the participants will receive 65.25% of the 2011 performance based shares and are estimated to receive the targeted amount (or 100%) of the 2012 and 2013 performance shares.

The fair value of the restricted stock granted in 2013, 2012, and 2011 at the grant date was $21.3 million, $16.9 million, and $10.8 million, respectively. The aggregate intrinsic value of the 248,003 shares of restricted stock on their 2013 vesting date was $11.3 million. The aggregate intrinsic value of the 776,743 shares outstanding subject to vesting at December 31, 2013 was $40.1 million with a weighted average remaining life of 1.0 year.

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Employee Stock Option Plan

The Stock Option Plan, provided the granting of options for up to 2,700,000 shares of common stock to officers and employees. The option plan permitted the issuance of qualified or nonqualified stock options. Options granted typically became exercisable at the rate of 20% per year one year after being granted and expire after 10 years from the original grant date. The exercise price for options granted under this plan was the fair market value of the common stock on the date of the grant. In 2006, as a result of the approval of the adoption of the Unit Corporation Stock and Incentive Compensation Plan, no further awards were made under this plan.

Activity pertaining to the Stock Option Plan is as follows:

	Number of Shares		Weighted Average Exercise Price
Outstanding at January 1, 2011	184,765		$	31.11
Granted	—		—
Exercised	(42,285	)	28.29
Forfeited	(3,500	)	53.90
Outstanding at December 31, 2011	138,980		31.39
Granted	—		—
Exercised	(18,850	)	20.38
Forfeited	(2,100	)	37.83
Outstanding at December 31, 2012	118,030		33.03
Granted	—		—
Exercised	(48,110	)	26.09
Forfeited	(1,000	)	37.83
Outstanding at December 31, 2013	68,920		$	37.81

There were no shares that vested in 2013, 2012, or 2011. The intrinsic value of options exercised in 2013 was $1.1 million. Total cash received from the options exercised in 2013 was $0.1 million.

	Outstanding and Exercisable Options at December 31, 2013
Exercise Prices	Number of Shares	Weighted Average Remaining Contractual Life	Weighted Average Exercise Price
$37.69 - $37.83	68,920	1.0 year	$37.81

Options for 68,920, 118,030, and 138,980 shares were exercisable with weighted average exercise prices of $37.81, $33.03, and $31.39 at December 31, 2013, 2012, and 2011, respectively. The aggregate intrinsic value of the 68,920 shares outstanding subject to options at December 31, 2013 was $1.0 million with a weighted average remaining contractual term of 1.0 year.

Non-Employee Directors' Stock Option Plan

Under the Unit Corporation 2000 Non-Employee Directors’ Stock Option Plan, on the first business day following each annual meeting of shareholders, each person who was then a member of our Board of Directors and who was not then an employee of the company or any of its subsidiaries was granted an option to purchase 3,500 shares of common stock. The option price for each stock option was the fair market value of the common stock on the date the stock options were granted. The term of each option is 10 years and cannot be increased and no stock options were to be exercised during the first six

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months of its term except in case of death. As mentioned above, on May 2, 2012, our stockholders approved the amended plan which succeeds this plan, and no new awards will be issued under the non-employee director option plan.

Activity pertaining to the Directors’ Plan is as follows:

	Number of Shares		Weighted Average Exercise Price
Outstanding at January 1, 2011	178,500		$	48.77
Granted	31,500		53.81
Exercised	(10,500	)	21.96
Forfeited	—		—
Outstanding at December 31, 2011	199,500		48.37
Granted	—		—
Exercised	(7,000	)	20.28
Forfeited	—		—
Outstanding at December 31, 2012	192,500		49.39
Granted	—		—
Exercised	(17,500	)	32.53
Forfeited	(3,500	)	20.46
Outstanding at December 31, 2013	171,500		$	51.70

The total grant date fair value of the 31,500 shares vesting in 2011 was $0.7 million. The intrinsic value of the 17,500 options exercised in 2013 was $0.2 million. Total cash received from options exercised in 2013 was $0.6 million.

	Outstanding and Exercisable Options at December 31, 2013
Weighted Average Exercise Price	Number of Shares	Weighted Average Remaining Contractual Life	Weighted Average Exercise Price
$28.23 - $41.21	66,500	4.6 years	$	36.64
$53.81 - $73.26	105,000	4.5 years	$	61.24

Options for 171,500, 192,500, and 199,500 shares were exercisable with weighted average exercise prices of $51.70, $49.39, and $48.37 at December 31, 2013, 2012, and 2011, respectively. The aggregate intrinsic value of the shares outstanding subject to options at December 31, 2013 was $1.0 million with a weighted average remaining contractual term of 4.6 years.

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NOTE 13 – DERIVATIVES

Commodity Derivatives

We have entered into various types of derivative transactions covering some of our projected natural gas, NGLs, and oil production. These transactions are intended to reduce our exposure to market price volatility by setting the price(s) we will receive for that production. Our decisions on the price(s), type, and quantity of our production hedged is based, in part, on our view of current and future market conditions. As of December 31, 2013, our derivative transactions consisted of the following types of hedges:

• Swaps. We receive or pay a fixed price for the hedged commodity and pay or receive a floating market price to the counterparty. The fixed-price payment and the floating-price payment are netted, resulting in a net amount due to or from the counterparty.

• Collars. A collar contains a fixed floor price (put) and a ceiling price (call). If the market price exceeds the call strike price or falls below the put strike price, we receive the fixed price and pay the market price. If the market price is between the call and the put strike price, no payments are due from either party.

We have documented policies and procedures to monitor and control the use of derivative instruments. We do not engage in derivative transactions for speculative purposes. In August 2012, we determined on a prospective basis, to enter into economic hedges without electing cash flow hedge accounting. Therefore, the change in fair value, on all commodity derivatives entered into after that determination, will be reflected in the income statement and not in accumulated other comprehensive income (OCI).

At December 31, 2013, the following non-designated hedges were outstanding:

Term	Commodity	Hedged Volume	Weighted Average  Fixed Price for Swaps	Hedged Market
Jan’14 – Dec’14	Natural gas – swap	80,000 MMBtu/day	$4.24	IF – NYMEX (HH)
Jan’14 – Dec’14	Natural gas – collar	10,000 MMBtu/day	$3.75-4.37	IF – NYMEX (HH)
Jan’14 – Jun’14	Crude oil – swap	500 Bbl/day	$100.03	WTI – NYMEX
Jan’14 – Dec’14	Crude oil – swap	3,000 Bbl/day	$91.77	WTI – NYMEX
Jan’14 – Dec’14	Crude oil – collar	4,000 Bbl/day	$90.00-96.08	WTI – NYMEX

Subsequent to December 31, 2013, the following non-designated hedges were entered into:

Term	Commodity	Hedged Volume	Weighted Average  Fixed Price for Swaps	Hedged Market
Mar'14	Natural gas – basis swap	30,000 MMBtu/day	$(0.095)	NGPL-TXOK
Mar'14	Natural gas – basis swap	60,000 MMBtu/day	$(0.027)	NGPL-Midcon

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The following tables present the fair values of our derivative transactions and the location within our balance sheets where those values are recorded at December 31:

		Derivative Assets Fair Value
	Balance Sheet Location	2013		2012
		(In thousands)
Derivatives designated as hedging instruments
Commodity derivatives:
Current	Current derivative assets	$	—	$	13,674
Long-term	Non-current derivative assets	—		—
Total derivatives designated as hedging instruments		—		13,674
Derivatives not designated as hedging instruments
Commodity derivatives:
Current	Current derivative assets	515		2,878
Long-term	Non-current derivative assets	—		—
Total derivatives not designated as hedging instruments		515		2,878
Total derivative assets		$	515	$	16,552

		Derivative Liabilities Fair Value
	Balance Sheet Location	2013		2012
		(In thousands)
Derivatives designated as hedging instruments
Commodity derivatives:
Current	Current derivative liabilities	$	—	$	1,005
Long-term	Non-current derivative liabilities	—		—
Total derivatives designated as hedging instruments		—		1,005
Derivatives not designated as hedging instruments
Commodity derivatives:
Current	Current derivative liabilities	5,561		943
Long-term	Non-current derivative liabilities	—		562
Total derivatives not designated as hedging instruments		5,561		1,505
Total derivative liabilities		$	5,561	$	2,510

If a legal right of set-off exists, we net the value of the derivative transactions we have with the same counterparty in our balance sheets.

We recognized in accumulated other comprehensive income (OCI) the effective portion of any changes in fair value and reclassified the recognized gains (losses) on the sales to oil and natural gas revenue as the underlying transactions were settled. All cash flow hedges expired as of December 31, 2013, therefore we had no balance in accumulated OCI at December 31, 2013 and at December 31, 2012, we had a gain of $7.6 million, net of tax.

For our economic hedges that we elected not to apply cash flow accounting to, any changes in their fair value occurring before their maturity (i.e., temporary fluctuations in value) are reported in gain (loss) on derivatives not designated as hedges

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and hedge ineffectiveness, net in our consolidated statements of income. Changes in the fair value of derivatives that were designated as cash flow hedges, to the extent they were effective in offsetting cash flows attributable to the hedged risk, were recorded in OCI until the hedged item was recognized into earnings. When the hedged item was recognized into earnings, it was reported in oil and natural gas revenues. Any change in fair value that resulted from ineffectiveness was recognized in gain (loss) on derivatives not designated as hedges and hedge ineffectiveness, net.

Effect of Derivative Instruments on the Consolidated Balance Sheets (cash flow hedges) for the year ended December 31:

Derivatives in Cash Flow Hedging Relationships	Amount of Gain or (Loss)  Recognized in Accumulated OCI on Derivative (Effective Portion) (1)
	2013		2012
	(In thousands)
Commodity derivatives	$	—	$	7,587

_________________________

(1) Net of taxes.

Effect of derivative instruments on the Consolidated Statements of Income (cash flow hedges) for the year ended December 31:

Derivative Instrument	Location of Gain or (Loss) Reclassified  from Accumulated OCI into Income &  Location of Gain or (Loss) Recognized in Income	Amount of Gain or (Loss) Reclassified from  Accumulated OCI into Income (1)				Amount of Gain or (Loss) Recognized in Income (2)
		2013		2012		2013			2012
		(In thousands)
Commodity derivatives	Oil and natural gas revenue (1)	$	603	$	51,853	$	—		$	—
Commodity derivatives	Gain (loss) on derivatives not designated as hedges and hedge ineffectiveness, net (2)	—		—		(190		)	(2,616		)
	Total	$	603	$	51,853	$	(190	)	$	(2,616	)

_________________________

(1) Effective portion of gain (loss).

(2) Ineffective portion of gain (loss).

Effect of Derivative Instruments on the Consolidated Statements of Income (derivatives not designated as hedging instruments) for the year ended December 31:

	Location of Gain or (Loss) Recognized in Income on Derivative	Amount of Gain or (Loss) Recognized in Income on  Derivative
Derivatives Not Designated as Hedging Instruments		2013			2012
		(In thousands)
Commodity derivatives	Gain (loss) on derivatives not designated as hedges and hedge ineffectiveness, net (1)	$	(8,184	)	$	1,373
Total		$	(8,184	)	$	1,373

_________________________

(1) Amount settled during the period is a loss of $(1,764) and $0, respectively.

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NOTE 14 – FAIR VALUE MEASUREMENTS

Fair value is defined as the amount that would be received from the sale of an asset or paid for the transfer of a liability in an orderly transaction between market participants (in either case, an exit price). To estimate an exit price, a three-level hierarchy is used prioritizing the valuation techniques used to measure fair value into three levels with the highest priority given to Level 1 and the lowest priority given to Level 3. The levels are summarized as follows:

• Level 1—unadjusted quoted prices in active markets for identical assets and liabilities.

• Level 2—significant observable pricing inputs other than quoted prices included within level 1 that are either directly or indirectly observable as of the reporting date. Essentially, inputs (variables used in the pricing models) that are derived principally from or corroborated by observable market data.

• Level 3—generally unobservable inputs which are developed based on the best information available and may include our own internal data.

The inputs available to us determine the valuation technique we use to measure the fair values of our financial instruments.

The following tables set forth our recurring fair value measurements:

	December 31, 2013
	Level 2			Level 3			Effect of Netting			Total
	(In thousands)
Financial assets (liabilities):
Commodity derivatives:
Assets	$	1,978		$	20		$	(1,483	)	$	515
Liabilities	(4,429		)	(2,615		)	1,483			(5,561		)
	$	(2,451	)	$	(2,595	)	$	—		$	(5,046	)

	December 31, 2012
	Level 2			Level 3			Effect of Netting			Total
	(In thousands)
Financial assets (liabilities):
Commodity derivatives:
Assets	$	18,555		$	—		$	(2,003	)	$	16,552
Liabilities	(3,918		)	(595		)	2,003			(2,510		)
	$	14,637		$	(595	)	$	—		$	14,042

All of our counterparties are subject to master netting arrangements. If a legal right of set-off exists, we net the value of the derivative transactions we have with the same counterparty. We are not required to post any cash collateral with our counterparties and no collateral has been posted as of December 31, 2013.

Certain natural gas fixed price swaps were transferred from Level 3 to Level 2 as of March 31, 2012 because of improvements in our ability to obtain and corroborate observable significant inputs to assess the fair value. Our policy is to recognize transfers either in or out of fair value hierarchy levels as of the end of the quarterly reporting period in which the event or change in circumstances causing the transfer occurred.

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The following methods and assumptions were used to estimate the fair values of the assets and liabilities in the table above.

Level 2 Fair Value Measurements

Commodity Derivatives.    We measure the fair values of our crude oil and natural gas swaps using estimated internal discounted cash flow calculations based on the NYMEX futures index.

Level 3 Fair Value Measurements

Commodity Derivatives.    The fair values of our natural gas and crude oil collars are estimated using internal discounted cash flow calculations based on forward price curves, quotes obtained from brokers for contracts with similar terms, or quotes obtained from counterparties to the agreements.

The following tables are reconciliations of our level 3 fair value measurements:

	Net Derivatives
	For the Year Ended,
	December 31, 2013			December 31, 2012
	(In thousands)
Beginning of period	$	(595	)	$	33,615
Total gains or losses:
Included in earnings (1)	(2,637		)	24,484
Included in other comprehensive income (loss)	—			(11,641		)
Settlements	637			(25,129		)
Transfers out of Level 3 into Level 2	—			(21,924		)
End of period	$	(2,595	)	$	(595	)
Total gains (losses) for the period included in earnings attributable to the change in unrealized loss relating to assets still held at end of period	$	(2,000	)	$	(645	)

_________________________

(1) Commodity sales collars are reported in the consolidated statements of income in oil and gas revenues (for cash flow hedges), and gain (loss) on derivatives not designated as hedges and hedge ineffectiveness, net, respectively.

The following table provides quantitative information about our Level 3 unobservable inputs at December 31, 2013:

Commodity (1)	Fair Value			Valuation Technique	Unobservable Input	Range
	(In thousands)
Oil collars	$	(2,246	)	Discounted cash flow	Forward commodity price curve	$0.20-$5.29
Natural gas collar	$	(349	)	Discounted cash flow	Forward commodity price curve	$0.00-$0.39

 _________________________

(1) The commodity contracts detailed in this category include non-exchange-traded natural gas and crude oil collars that are valued based on NYMEX. The forward pricing range represents the low and high price expected to be received within the settlement period.

Based on our valuation at December 31, 2013, we determined that the non-performance risk with regard to our counterparties was immaterial.

Fair Value of Other Financial Instruments

The following disclosure of the estimated fair value of financial instruments is made in accordance with accounting guidance for financial instruments. We have determined the estimated fair values by using available market information and valuation methodologies. Considerable judgment is required in interpreting market data to develop the estimates of fair value. The use of different market assumptions or valuation methodologies may have a material effect on the estimated fair value amounts.

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At December 31, 2013, the carrying values on the consolidated balance sheets for cash and cash equivalents (classified as Level 1), accounts receivable, accounts payable, other current assets, and current liabilities approximate their fair value because of their short term nature.

Based on the borrowing rates currently available to us for credit agreement debt with similar terms and maturities and also considering the risk of our non-performance, long-term debt under our credit agreement at December 31, 2013 approximates its fair value. This debt would be classified as Level 2.

The carrying amounts of long-term debt, net of unamortized discount, associated with the Notes reported in the consolidated balance sheets at December 31, 2013 and December 31, 2012 were $645.7 million and $645.3 million, respectively. We estimate the fair value of these Notes using quoted marked prices at December 31, 2013 and December 31, 2012 were $688.2 million and $687.7 million, respectively. These Notes would be classified as Level 2.

NOTE 15 – ACCUMULATED OTHER COMPREHENSIVE INCOME

Changes in accumulated other comprehensive income (loss) by component, net of tax, are as follows:

	Net Gains (Losses) on Cash Flow Hedges
	2013			2012			2011
	(In thousands)
Balance at January 1:	$	7,587		$	19,026		$	(6,851	)
Other comprehensive income before reclassification	(7,349		)	18,635			29,384
Amounts reclassified from accumulated other comprehensive income	(238		)	(30,074		)	(3,507		)
New current-period other comprehensive income	(7,587		)	(11,439		)	25,877
Balance at December 31:	$	—		$	7,587		$	19,026

Amounts reclassified from accumulated other comprehensive income (loss) into the consolidated statements of income for the year ended December 31:

	2013			2012			2011			Affected Line Item in the Statement Where Net Income is Presented
	(In thousands)
Net gains (loss) on cash flow hedges
Commodity derivatives	$	603		$	51,853		$	2,965		Oil and natural gas revenues
Commodity derivatives	(190		)	(2,616		)	2,749			Gain (loss) on derivatives not designated as hedges and hedge ineffectiveness, net
	413			49,237			5,714			Total before tax
	(175		)	(19,163		)	(2,207		)	Tax expense
Total reclassification for the period	$	238		$	30,074		$	3,507		Net of tax

NOTE 16 – COMMITMENTS AND CONTINGENCIES

We lease office space or yards in Edmond, Oklahoma City, and Tulsa, Oklahoma; Houston, Texas; Englewood, Colorado; Pinedale, Wyoming; and Pittsburgh, Pennsylvania under the terms of operating leases expiring through September, 2017. Additionally, we have several compressor rentals, equipment leases, and lease space on short-term commitments to stack excess drilling rig equipment and production inventory.Future minimum rental payments under the terms of the leases are approximately $8.4 million, $3.4 million, $0.6 million, and $0.1 million in 2014 through 2017, respectively. Total rent expense incurred was $16.9 million, $14.0 million, and $8.5 million in 2013, 2012, and 2011, respectively.

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The Unit 1984 Oil and Gas Limited Partnership and the 1986 Energy Income Limited Partnership agreements along with the employee oil and gas limited partnerships require, on the election of a limited partner, that we repurchase the limited partner’s interest at amounts to be determined by appraisal in the future. These repurchases in any one year are limited to 20% of the units outstanding. We made repurchases of $16,000 in 2013, 56,000 in 2012, and $22,000 in 2011.

We manage our exposure to environmental liabilities on properties to be acquired by identifying existing problems and assessing the potential liability. We also conduct periodic reviews, on a company-wide basis, to identify changes in our environmental risk profile. These reviews evaluate whether there is a probable liability, its amount, and the likelihood that the liability will be incurred. The amount of any potential liability is determined by considering, among other matters, incremental direct costs of any likely remediation and the proportionate cost of employees who are expected to devote a significant amount of time directly to any possible remediation effort. As it relates to evaluations of purchased properties, depending on the extent of an identified environmental problem, we may exclude a property from the acquisition, require the seller to remediate the property to our satisfaction, or agree to assume liability for the remediation of the property.

We have not historically experienced any environmental liability while being a contract driller since the greatest portion of risk is borne by the operator. Any liabilities we have incurred have been small and have been resolved while the drilling rig is on the location and the cost has been included in the direct cost of drilling the well.

For the next twelve months, we have committed to purchase approximately $11.4 million of new drilling rig components, drill pipe, drill collars and related equipment and $0.6 million remaining towards a gas treating plant.

We are subject to various legal proceedings arising in the ordinary course of our various businesses none of which, in our opinion, will result in judgments which would have a material adverse effect on our financial position, operating results or cash flows.

NOTE 17 – INDUSTRY SEGMENT INFORMATION

We have three main business segments offering different products and services:

• Oil and natural gas,

• Contract drilling, and

• Mid-stream

The oil and natural gas segment is engaged in the development, acquisition, and production of oil and natural gas properties. The contract drilling segment is engaged in the land contract drilling of oil and natural gas wells and the mid-stream segment is engaged in the buying, selling, gathering, processing, and treating of natural gas.

We evaluate each segment’s performance based on its operating income, which is defined as operating revenues less operating expenses and depreciation, depletion, amortization, and impairment. Our oil and natural gas production outside the United States is not significant.

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The following table provides certain information about the operations of each of our segments:

	2013			2012				2011
	(In thousands)
Revenues:
Oil and natural gas	$	649,718		$	567,944			$	514,614
Contract drilling	479,091			579,368				536,872
Elimination of inter-segment revenue	(64,313		)	(49,649		)		(52,221		)
Contract drilling net of inter-segment revenue	414,778			529,719				484,651
Gas gathering and processing	378,397			290,773				284,248
Elimination of inter-segment revenue	(91,043		)	(73,313		)		(76,010		)
Gas gathering and processing net of inter-segment revenue	287,354			217,460				208,238
Total revenues	$	1,351,850		$	1,315,123			$	1,207,503
Operating income:
Oil and natural gas	$	239,219		$	(77,221	)	(3)	$	199,993
Contract drilling	96,304			159,188				135,085
Gas gathering and processing	10,757			5,780			(4)	17,278
Total operating income (1)	346,280			87,747				352,356
General and administrative expense	(38,323		)	(33,086		)		(30,055		)
Gain (loss) on disposition of assets	17,076			253				(595		)
Interest expense, net	(15,015		)	(14,137		)		(4,167		)
Gain (loss) on derivatives not designated as hedges and hedge ineffectiveness, net	(8,374		)	(1,243		)		1,702
Other income (expense), net	(175		)	(132		)		(239		)
Income before income taxes	$	301,469		$	39,402			$	319,002
Identifiable assets:
Oil and natural gas	$	2,441,792		$	2,214,029			$	1,820,492
Contract drilling	1,042,661			1,079,736				1,118,666
Gas gathering and processing	473,717			413,708				247,763
Total identifiable assets (2)	3,958,170			3,707,473				3,186,921
Corporate assets	64,220			53,647				69,799
Total assets	$	4,022,390		$	3,761,120			$	3,256,720
Capital expenditures:
Oil and natural gas (5)	$	531,233		$	1,145,337			$	588,158
Contract drilling	64,325			77,520				162,208
Gas gathering and processing	96,085			183,162				79,355
Other (5)	4,483			11,083				2,688
Total capital expenditures	$	696,126		$	1,417,102			$	832,409
Depreciation, depletion, amortization, and impairment:
Oil and natural gas
Depreciation, depletion and amortization	226,498			211,347				183,350
Impairment of oil and natural gas properties	—			283,606			(3)	—
Contract drilling	71,194			81,007				79,667
Gas gathering and processing	33,191			24,388			(4)	16,101
Other	3,024			2,279				1,333
Total depreciation, depletion, amortization, and impairment	$	333,907		$	602,627			$	280,451

_________________________ 

(1) Operating income is total operating revenues less operating expenses, depreciation, depletion, amortization, and impairment and does not include general corporate expenses, (gain) loss on disposition of assets, gain (loss) on non-designated hedges and hedge ineffectiveness, interest expense, other income (loss), or income taxes.

(2) Identifiable assets are those used in Unit’s operations in each industry segment. Corporate assets are principally cash and cash equivalents, short-term investments, corporate leasehold improvements, furniture and equipment.

(3) In June 2012 and December 2012, due to low 12-month average commodity prices, we incurred non-cash ceiling test write downs of our oil and natural gas properties of $115.9 million pre-tax ($72.1 million net of tax) and $167.7 million pre-tax ($104.4 million net of tax), respectively.

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UNIT CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

(4) Depreciation, depletion, amortization, and impairment for gas gathering and processing includes a $1.2 million write down of our Erick system.

(5) Reclassified salt water disposal capital expenditures out of other and into oil and natural gas of $16,988 and $8,103 for 2012 and 2011, respectively.

NOTE 18 – SELECTED QUARTERLY FINANCIAL INFORMATION

Summarized unaudited quarterly financial information is as follows:

	Three Months Ended
	March 31		June 30			September 30		December 31
	(In thousands except per share amounts)
2013
Revenues	$	318,532	$	340,421		$	333,776	$	359,121
Gross profit	$	83,683	$	90,823		$	79,082	$	92,692		(1)
Net income	$	40,206	$	59,007		$	34,232	$	51,301
Net income per common share:
Basic	$	0.84	$	1.22		$	0.71	$	1.06
Diluted	$	0.83	$	1.22		$	0.70	$	1.05
2012
Revenues	$	333,966	$	327,785		$	321,790	$	331,582
Gross profit (loss)	$	95,912	$	(22,253	)	$	95,921	$	(81,833	)	(1)
Net income (loss)	$	52,439	$	(19,302	)	$	46,586	$	(56,547	)
Net income (loss) per common share:
Basic	$	1.10	$	(0.40	)	$	0.97	$	(1.18	)	(2)
Diluted	$	1.09	$	(0.40	)	$	0.97	$	(1.18	)

_________________________

(1) Gross profit excludes general and administrative expense, interest expense, (gain) loss on disposition of assets, gain (loss) on non-designated hedges and hedge ineffectiveness, income taxes, and other income (loss).

(2) Due to the effect of rounding the basic earnings per share for the year’s four quarters does not equal annual earnings per share.

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SUPPLEMENTAL OIL AND GAS DISCLOSURES

(UNAUDITED)

Our oil and gas operations are substantially located in the United States. We do have operations in Canada that are insignificant. The capitalized costs at year-end and costs incurred during the year were as follows:

	2013			2012			2011
	(In thousands)
Capitalized costs:
Proved properties	$	4,235,712		$	3,822,381		$	3,302,032
Unproved properties	545,588			521,659			185,632
	4,781,300			4,344,040			3,487,664
Accumulated depreciation, depletion, amortization, and impairment	(2,439,458		)	(2,216,787		)	(1,724,312		)
Net capitalized costs	$	2,341,842		$	2,127,253		$	1,763,352
Cost incurred:
Unproved properties acquired	$	76,304		$	420,467		$	70,999
Proved properties acquired	—			225,669			50,013
Exploration	33,373			46,467			43,836
Development	424,314			390,649			391,862
Asset retirement obligation	(17,951		)	45,097			23,345
Total costs incurred	$	516,040		$	1,128,349		$	580,055

The following table shows a summary of the oil and natural gas property costs not being amortized at December 31, 2013, by the year in which such costs were incurred:

	2013		2012		2011		2010 and Prior		Total
	(In thousands)
Unproved properties acquired and wells in progress	$	92,929	$	412,623	$	32,492	$	7,544	$	545,588

Unproved properties not subject to amortization relates to properties which are not individually significant and consist primarily of lease acquisition costs. The evaluation process associated with these properties has not been completed and therefore, the company is unable to estimate when these costs will be included in the amortization calculation.

The results of operations for producing activities are as follows:

	2013			2012			2011
	(In thousands)
Revenues	$	633,792		$	557,003		$	505,450
Production costs	(162,822		)	(131,389		)	(115,400		)
Depreciation, depletion, amortization, and impairment	(222,672		)	(492,475		)	(181,960		)
	248,298			(66,861		)	208,090
Income tax (expense) benefit	(96,091		)	27,533			(80,323		)
Results of operations for producing activities (excluding corporate overhead and financing costs)	$	152,207		$	(39,328	)	$	127,767

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Estimated quantities of proved developed oil, NGLs, and natural gas reserves and changes in net quantities of proved developed and undeveloped oil, NGLs, and natural gas reserves were as follows:

	Oil Bbls		NGLs Bbls		Natural Gas Mcf
	(In thousands)
2013
Proved Developed and Undeveloped Reserves:
Beginning of Year	21,998		35,166		555,647
Revision of Previous Estimates	(2,113	)	836		2,421
Extensions and Discoveries	4,678		7,273		68,611
Infill Reserves in Existing Proved Fields	2,299		1,945		21,573
Purchases of Minerals in Place	—		—		11
Production	(3,360	)	(3,914	)	(56,757	)
Sales	(1,737	)	(101	)	(9,722	)
End of Year	21,765		41,205		581,784
Proved Developed Reserves:
Beginning of Year	16,441		25,657		452,844
End of Year	15,594		30,437		464,234
Proved Undeveloped Reserves:
Beginning of Year	5,557		9,509		102,803
End of Year	6,171		10,768		117,550
2012
Proved Developed and Undeveloped Reserves:
Beginning of Year	20,255		22,087		442,135
Revision of Previous Estimates (1)	(1,747	)	(2,682	)	(55,110	)
Extensions and Discoveries	5,014		4,819		54,761
Infill Reserves in Existing Proved Fields	4,196		3,018		25,057
Purchases of Minerals in Place	2,830		11,098		141,494
Production	(3,279	)	(2,796	)	(48,930	)
Sales	(5,271	)	(378	)	(3,760	)
End of Year	21,998		35,166		555,647
Proved Developed Reserves:
Beginning of Year	15,618		16,649		372,311
End of Year	16,441		25,657		452,844
Proved Undeveloped Reserves:
Beginning of Year	4,637		5,438		69,824
End of Year	5,557		9,509		102,803
2011
Proved Developed and Undeveloped Reserves:
Beginning of Year	17,494		16,117		420,486
Revision of Previous Estimates (1)	374		2,112		(30,510	)
Extensions and Discoveries	3,477		3,924		39,836
Infill Reserves in Existing Proved Fields	1,229		1,780		15,592
Purchases of Minerals in Place	192		393		40,835
Production	(2,511	)	(2,239	)	(44,104	)
Sales	—		—		—
End of Year	20,255		22,087		442,135
Proved Developed Reserves:
Beginning of Year	12,773		12,088		346,928
End of Year	15,618		16,649		372,311
Proved Undeveloped Reserves:
Beginning of Year	4,721		4,029		73,558
End of Year	4,637		5,438		69,824

_________________________

(1) Natural gas revisions of previous estimates decreased primarily due to a decline in natural gas prices.

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Estimates of oil, NGLs, and natural gas reserves require extensive judgments of reservoir engineering data. Assigning monetary values to such estimates does not reduce the subjectivity and changing nature of such reserve estimates. Indeed the uncertainties inherent in the disclosure are compounded by applying additional estimates of the rates and timing of production and the costs that will be incurred in developing and producing the reserves. The information set forth in this report is, therefore, subjective and, since judgments are involved, may not be comparable to estimates submitted by other oil and natural gas producers. In addition, since prices and costs do not remain static, and no price or cost escalations or de-escalations have been considered, the results are not necessarily indicative of the estimated fair market value of estimated proved reserves, nor of estimated future cash flows.

The standardized measure of discounted future net cash flows (SMOG) was calculated using 12-month average prices and year-end costs and statutory tax rates, adjusted for permanent differences that relate to existing proved oil, NGLs, and natural gas reserves. SMOG as of December 31 is as follows:

	2013			2012			2011
	(In thousands)
Future cash flows	$	5,573,119		$	4,522,351		$	4,583,629
Future production costs	(1,734,985		)	(1,405,773		)	(1,277,856		)
Future development costs	(571,170		)	(431,673		)	(340,992		)
Future income tax expenses	(1,044,608		)	(762,519		)	(952,736		)
Future net cash flows	2,222,356			1,922,386			2,012,045
10% annual discount for estimated timing of cash flows	(996,380		)	(842,430		)	(924,136		)
Standardized measure of discounted future net cash flows relating to proved oil, NGLs, and natural gas reserves	$	1,225,976		$	1,079,956		$	1,087,909

The principal sources of changes in the standardized measure of discounted future net cash flows were as follows:

	2013			2012			2011
	(In thousands)
Sales and transfers of oil and natural gas produced, net of production costs	$	(470,970	)	$	(425,626	)	$	(389,339	)
Net changes in prices and production costs	188,826			(321,099		)	115,852
Revisions in quantity estimates and changes in production timing	(10,650		)	(148,648		)	(38,336		)
Extensions, discoveries and improved recovery, less related costs	426,377			432,058			401,134
Changes in estimated future development costs	26,629			51,587			37,742
Previously estimated cost incurred during the period	96,457			104,377			45,327
Purchases of minerals in place	9			283,774			58,567
Sales of minerals in place	(43,435		)	(112,359		)	(29		)
Accretion of discount	147,579			157,842			128,492
Net change in income taxes	(170,091		)	94,678			(60,675		)
Other—net	(44,711		)	(124,537		)	(65,912		)
Net change	146,020			(7,953		)	232,823
Beginning of year	1,079,956			1,087,909			855,086
End of year	$	1,225,976		$	1,079,956		$	1,087,909

Certain information concerning the assumptions used in computing SMOG and their inherent limitations are discussed below. We believe this information is essential for a proper understanding and assessment of the data presented.

The assumptions used to compute SMOG do not necessarily reflect our expectations of actual revenues to be derived from those reserves nor their present worth. Assigning monetary values to the reserve quantity estimation process does not reduce the subjective and ever-changing nature of reserve estimates. Additional subjectivity occurs when determining present values because the rate of producing the reserves must be estimated. In addition to difficulty inherent in predicting the future, variations from the expected production rate could result from factors outside of our control, such as unintentional delays in

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development, environmental concerns or changes in prices or regulatory controls. Also, the reserve valuation assumes that all reserves will be disposed of by production. However, other factors such as the sale of reserves in place could affect the amount of cash eventually realized.

The December 31, 2013, future cash flows were computed by applying the unescalated 12-month average prices of $96.94 per barrel for oil, $41.03 per barrel for NGLs, and $3.67 per Mcf for natural gas, then adjusted for price differentials, relating to proved reserves and to the year-end quantities of those reserves. Future price changes are considered only to the extent provided by contractual arrangements in existence at year-end.

Future production and development costs are computed by estimating the expenditures to be incurred in developing and producing the proved oil, NGLs, and natural gas reserves at the end of the year, based on continuation of existing economic conditions.

Future income tax expenses are computed by applying the appropriate year-end statutory tax rates to the future pretax net cash flows relating to proved oil, NGLs, and natural gas reserves less the tax basis of our properties. The future income tax expenses also give effect to permanent differences and tax credits and allowances relating to our proved oil, NGLs, and natural gas reserves.

Care should be exercised in the use and interpretation of the above data. As production occurs over the next several years, the results shown may be significantly different as changes in production performance, petroleum prices and costs are likely to occur.

Item 9.     Changes in and Disagreements with Accountants on Accounting and Financial Disclosure

None.

Item 9A. Controls and Procedures

(a) Evaluation of Disclosure Controls and Procedures

The company maintains “disclosure controls and procedures,” as that term is defined in Rule 13a-15(e) and Rule 15d-15(e) under the Securities Exchange Act of 1934 (the Exchange Act), that are designed to ensure that information required to be disclosed in reports the company files or submits under the Exchange Act is recorded, processed, summarized, and reported within the time periods specified in SEC rules and forms, and that such information is collected and communicated to management, including our Chief Executive Officer and Chief Financial Officer, as appropriate, to allow timely decisions regarding required disclosure. In designing and evaluating its disclosure controls and procedures, our management recognized that no matter how well conceived and operated, disclosure controls and procedures can provide only reasonable, not absolute, assurance that the objectives of the disclosure controls and procedures are met. Our disclosure controls and procedures have been designed to meet, and our management believes that they meet, reasonable assurance standards. Based on their evaluation as of the end of the period covered by this Annual Report on Form 10-K, our Chief Executive Officer and Chief Financial Officer have concluded that, subject to the limitations noted above, the company’s disclosure controls and procedures were effective.

(b) Management’s Report on Internal Control Over Financial Reporting

Our management is responsible for establishing and maintaining adequate internal control over financial reporting, as defined in Exchange Act Rule 13a-15(f). Our management, including our Chief Executive Officer and Chief Financial Officer, conducted an evaluation of the effectiveness of our internal control over financial reporting based on the Internal Control—Integrated Framework (1992) issued by the Committee of Sponsoring Organizations of the Treadway Commission. Based on the results of this evaluation, our management concluded that our internal control over financial reporting was effective as of December 31, 2013.

The effectiveness of the company’s internal control over financial reporting as of December 31, 2013, has been audited by PricewaterhouseCoopers LLP, an independent registered public accounting firm, as stated in their report which appears herein.

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(c) Changes in Internal Control Over Financial Reporting

During the last quarter, there were no changes in our internal control over financial reporting that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

Item 9B. Other Information

None.

PART III

Item 10. Directors, Executive Officers, and Corporate Governance

In accordance with Instruction G(3) of Form 10-K, the information required by this item is incorporated in this report by reference to the Proxy Statement, except for the information regarding our executive officers which is presented below. The Proxy Statement will be filed before our annual shareholders’ meeting scheduled to be held on May 7, 2014.

Our Code of Ethics and Business Conduct applies to all directors, officers, and employees, including our Chief Executive Officer, our Chief Financial Officer, and our Controller. You can find our Code of Ethics and Business Conduct on our internet website, www.unitcorp.com. We will post any amendments to the Code of Ethics and Business Conduct, and any waivers that are required to be disclosed by the rules of either the SEC or the NYSE, on our internet website.

Because our common stock is listed on the NYSE, our Chief Executive Officer was required to make, and he has made, an annual certification to the NYSE stating that he was not aware of any violation of our corporate governance listing standards of the NYSE. Our Chief Executive Officer made his annual certification to that effect to the NYSE as of May 8, 2013. In addition, we have filed, as exhibits to this Annual Report on Form 10-K, the certifications of our Chief Executive Officer and Chief Financial Officer required under Section 302 of the Sarbanes-Oxley Act of 2002 to be filed with the SEC regarding the quality of our public disclosure.

Executive Officers

The table below and accompanying text sets forth certain information as of February 14, 2014 concerning each of our executive officers as well as certain officers of our subsidiaries. There were no arrangements or understandings between any of the officers and any other person(s) under which the officers were elected.

NAME	AGE	POSITION HELD
Larry D. Pinkston	59	Chief Executive Officer since April 1, 2005, Director since January 15, 2004, President since August 1, 2003, Chief Operating Officer since February 24, 2004, Vice President and Chief Financial Officer from May 1989 to February 24, 2004
Mark E. Schell	56	Senior Vice President since December 2002, General Counsel and Corporate Secretary since January 1987
David T. Merrill	53	Senior Vice President since May 2, 2012, Chief Financial Officer and Treasurer since February 24, 2004, Vice President of Finance from August 2003 to February 24, 2004
Brad J. Guidry	58	Executive Vice President, Unit Petroleum Company since March 1, 2005
John Cromling	66	Executive Vice President, Unit Drilling Company since April 15, 2005
Robert Parks	59	Manager and President, Superior Pipeline Company, L.L.C. since June 1996

Mr. Pinkston joined the company in December 1981. He had served as Corporate Budget Director and Assistant Controller before being appointed Controller in February, 1985. In December, 1986 he was elected Treasurer of the company and was elected to the position of Vice President and Chief Financial Officer in May, 1989. In August, 2003, he was elected to the position of President. He was elected a director of the company by the Board in January, 2004. In February, 2004, in addition to his position as President, he was elected to the office of Chief Operating Officer. In April 2005, he also began serving as Chief Executive Officer. Mr. Pinkston holds the offices of President, Chief Executive Officer, and Chief Operating Officer. He holds a Bachelor of Science Degree in Accounting from East Central University of Oklahoma.

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Mr. Schell joined the company in January 1987, as its Secretary and General Counsel. In 2003, he was promoted to Senior Vice President. From 1979 until joining Unit Corporation, Mr. Schell was Counsel, Vice President, and a member of the Board of Directors of C & S Exploration Inc. He received a Bachelor of Science degree in Political Science from Arizona State University and his Juris Doctorate degree from the University of Tulsa College of Law. He is a member of the Oklahoma Bar Association as well as the Association of Corporate Counsel. Mr. Schell is a director of the Oklahoma Independent Petroleum Association and is Chairman of its legal committee. In addition, he is the President and a director of the Oklahoma Injury Benefit Coalition, an Oklahoma non-profit association advocating for alternatives to Oklahoma's current Workers' Compensation system. He is also a member of the State Chamber of Oklahoma board of directors and serves on the board of advisors for the Greater Oklahoma City Chamber.

Mr. Merrill joined the company in August 2003 and served as its Vice President of Finance until February 2004 when he was elected to the position of Chief Financial Officer and Treasurer. In May 2012, he was promoted to Senior Vice President. From May 1999 through August 2003, Mr. Merrill served as Senior Vice President, Finance with TV Guide Networks, Inc. From July 1996 through May 1999 he was a Senior Manager with Deloitte & Touche LLP. From July 1994 through July 1996 he was Director of Financial Reporting and Special Projects for MAPCO, Inc. He began his career as an auditor with Deloitte, Haskins & Sells in 1983. Mr. Merrill received a Bachelor of Business Administration Degree in Accounting from the University of Oklahoma and is a Certified Public Accountant.

Mr. Guidry joined Unit Petroleum Company in August 1988 as a Staff Geologist. In 1991, he was promoted to Geologic Manager overseeing the Geologic Operations of the company. In January 2003, he was promoted to Vice President of the West division. In March 2005, Mr. Guidry was promoted to Senior Vice President of Exploration for Unit Petroleum Company. From 1979 to 1988, he was employed as a Division Geologist for Reading and Bates Petroleum Co. From 1978 to 1979, he worked with ANR Resources in Houston. He began his career as an open hole well logging engineer with Dresser Atlas Oilfield Services. Mr. Guidry graduated from Louisiana State University with a Bachelor of Science degree in Geology.

Mr. Cromling joined Unit Drilling Company in 1997 as a Vice-President and Division Manager. In April 2005, he was promoted to the position of Executive Vice-President of Drilling for Unit Drilling Company. In 1980, he formed Cromling Drilling Company which managed and operated drilling rigs until 1987. From 1987 to 1997, Cromling Drilling Company provided engineering consulting services and generated and drilled oil and natural gas prospects. Prior to this, he was employed by Big Chief Drilling for 11 years and served as Vice-President. Mr. Cromling graduated from the University of Oklahoma with a degree in Petroleum Engineering.

Mr. Parks founded Superior Pipeline Company, L.L.C. in 1996. When Superior was acquired by the company in July 2004, he continued with Superior as one of its managers and as its President. From April 1992 through April 1996 Mr. Parks served as Vice-President—Gathering and Processing for Cimarron Gas Companies. From December 1986 through March 1992, he served as Vice-President—Business Development for American Central Gas Companies. Mr. Parks began his career as an engineer with Cities Service Company in 1978. He received a Bachelor of Science degree in Chemical Engineering from Rice University and his M.B.A. from the University of Texas at Austin.

Item 11. Executive Compensation

In accordance with Instruction G(3) of Form 10-K, the information required by this Item is incorporated into this report by reference to the Proxy Statement (see Item 10 above).

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Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters

The following table provides information for all equity compensation plans as of the fiscal year ended December 31, 2013, under which our equity securities were authorized for issuance:

Plan Category	Number of  Securities to be Issued Upon Exercise of Outstanding Options, Warrants and Rights (a)		Weighted  Average Exercise Price of Outstanding  Options, Warrants and Rights (b)		Number of  Securities Remaining  Available for Future Issuance Under Equity  Compensation  Plans (Excluding Securities Reflected in Column (a)) (c)
Equity compensation plans approved by security holders (1)	240,420	(2)	$	47.72	1,604,390	(3)
Equity compensation plans not approved by security holders	—		—		—
Total	240,420		$	47.72	1,604,390

_________________________

(1) Shares awarded under all above plans may be newly issued, from our treasury or acquired in the open market.

(2) This number includes the following:

68,920 stock options outstanding under the company’s Amended and Restated Stock Option Plan.

171,500 stock options outstanding under the Non-Employee Directors’ Stock Option Plan.

(3) This number reflects the shares available for issuance under the Unit Corporation Stock and Incentive Compensation Plan Amended and Restated May 2, 2012 (the amended plan). The amended plan allows us to grant stock-based compensation to our employees and non-employee directors. The previous balance of 230,000 shares that were available for issuance under the Non-Employee Directors’ Stock Option Plan were transferred to the amended plan on May 2, 2012. No more than 2,000,000 of the shares available under the amended plan may be issued as “incentive stock options” and all of the shares available under this plan may be issued as restricted stock. In addition, shares related to grants that are forfeited, terminated, canceled, expire unexercised, or settled in such manner that all or some of the shares are not issued to a participant shall immediately become available for issuance.

In accordance with Instruction G(3) of Form 10-K, the information required by this Item is incorporated into this report by reference to the Proxy Statement (see Item 10 above).

Item 13. Certain Relationships and Related Transactions, and Director Independence

In accordance with Instruction G(3) of Form 10-K, the information required by this Item is incorporated into this report by reference to the Proxy Statement (see Item 10 above).

Item 14. Principal Accounting Fees and Services

In accordance with Instruction G(3) of Form 10-K, the information required by this Item is incorporated into this report by reference to the Proxy Statement (see Item 10 above).

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PART IV

Item 15. Exhibits, Financial Statement Schedules

(a) Financial Statements, Schedules and Exhibits:

1. Financial Statements:

Included in Part II of this report:

Report of Independent Registered Public Accounting Firm

Consolidated Balance Sheets as of December 31, 2013 and 2012

Consolidated Statements of Income for the years ended December 31, 2013, 2012, and 2011

Consolidated Statements of Comprehensive Income for the Years Ended December 31, 2013, 2012, and 2011

Consolidated Statements of Changes in Shareholders’ Equity for the years ended December 31, 2011, 2012, and 2013

Consolidated Statements of Cash Flows for the years ended December 31, 2013, 2012, and 2011

Notes to Consolidated Financial Statements

2. Financial Statement Schedules:

Included in Part IV of this report for the years ended December 31, 2013, 2012, and 2011:

Schedule II—Valuation and Qualifying Accounts and Reserves

Other schedules are omitted because of the absence of conditions under which they are required or because the required information is included in the consolidated financial statements or notes thereto.

3. Exhibits:

The exhibit numbers in the following list correspond to the numbers assigned such exhibits in the Exhibit Table of Item 601 of Regulation S-K.

3.1	Restated Certificate of Incorporation of Unit Corporation (filed as Exhibit 3.1 to Unit's Form 8-K, dated June 29, 2000, which is incorporated herein by reference).
3.1.2	Certificate of Amendment of Amended and Restated Certificate of Incorporation of the Company (filed as Exhibit 3.1 to Unit’s Form 8-K, dated May 9, 2006 which is incorporated herein by reference).
3.2	By-Laws of Unit Corporation as amended and restated May 7, 2008 (filed as Exhibit 3.2 to Unit’s Form 8-K, dated May 8, 2008 which is incorporated herein by reference).
4.1	Form of Common Stock Certificate (filed as Exhibit 4.1 to Unit’s Form S-3 (File No. 333-83551), which is incorporated herein by reference).
4.2	Rights Agreement as amended and restated on May 18, 2005 (filed as Exhibit 4.1 to Unit’s Form 8-K dated May 18, 2005, which is incorporated herein by reference).
4.3	Amendment to Rights Agreement dated March 24, 2009 (filed as Exhibit 4.1 to Unit’s Form 8-K dated March 23, 2009, which is incorporated herein by reference).
4.4	Standstill Agreement dated March 24, 2009, by and between us and the George Kaiser Foundation (filed as Exhibit 4.2 to Unit’s Form 8-K dated March 23, 2009, which is incorporated herein by reference).
4.5	Indenture dated as of May 18, 2011, by and between the Company and Wilmington Trust FSB, as trustee (filed as Exhibit 4.1 to Unit’s Form 8-K dated May 18, 2011, which is incorporated herein by reference).
4.6	First Supplemental Indenture (including form of note) dated as of May 18, 2011, by and among the Company, as issuer, the Subsidiary Guarantors (as defined therein), as guarantors and Wilmington Trust FSB as trustee (filed as Exhibit 4.1 to Unit’s Form 8-K dated May 18, 2011, which is incorporated herein by reference).

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4.7	Registration Rights Agreement dated July 24, 2012, among Unit Corporation, certain of its wholly-owned subsidiaries party thereto, as guarantors, and Merrill Lynch, Pierce, Fenner & Smith Incorporated, as the representative of the several initial purchasers (filed as Exhibit 4.3 to Unit’s Form 8-K dated July 24, 2012, which is incorporated herein by reference).
10.1.1	Third Amended and Restated Security Agreement effective November 1, 2005 (filed as Exhibit 10.2 to Unit’s Form 8-K dated November 4, 2005, which is incorporated herein by reference).
10.1.2*	Form of Unit Corporation Restricted Stock Bonus Agreement (filed as Exhibit 10.1 to Unit’s Form 8-K dated December 13, 2005, which is incorporated herein by reference).
10.1.3*	Unit Corporation Stock and Incentive Compensation Plan Amended and Restated May 2, 2012 (filed as Exhibit 10 to Unit’s Form 8-K dated May 2, 2012, which is incorporated herein by reference).
10.1.4	Amended and Restated Key Employee Change of Control Contract dated August 19, 2008 (filed as Exhibit 10.1 to Unit’s Form 8-K dated August 25, 2008, which is incorporated herein by reference).
10.1.5	Senior Credit Agreement dated September 13, 2011 by and among the Company and the subsidiaries named therein (as borrowers), BOKF, NA DBA Bank of Oklahoma, as Administrative Agent, and the institutions named therein (as lenders) (filed as Exhibit 10.1 to Unit’s Form 8-K dated September 13, 2011, which is incorporated herein by reference).
10.1.6	Gas Purchase Agreement dated November 21, 2011 by and between Superior Pipeline Company, L.L.C. and Sullivan and Company, L.L.C. (filed as Exhibit 10.1 to Unit’s Form 8-K dated November 21, 2011, which is incorporated herein by reference).
10.1.7	First Amendment and Consent, dated September 5, 2012, to the Senior Credit Agreement  by and among the Company and the subsidiaries named therein (as borrowers), BOKF, NA DBA Bank of Oklahoma, as Administrative Agent, and the institutions named therein (as lenders) (filed as exhibit 10.1 to Unit's Form 8-K dated September 5, 2012, which is incorporated herein by reference).
10.2.1	Unit 1979 Oil and Gas Program Agreement of Limited Partnership (filed as Exhibit I to Unit Drilling and Exploration Company’s Registration Statement on Form S-1 as S.E.C. File No. 2-66347, which is incorporated herein by reference).
10.2.2	Unit 1984 Oil and Gas Program Agreement of Limited Partnership (filed as an Exhibit 3.1 to Unit 1984 Oil and Gas Program’s Registration Statement Form S-1 as S.E.C. File No. 2-92582, which is incorporated herein by reference).
10.2.3*	Unit’s Amended and Restated Stock Option Plan (filed as an Exhibit to Unit’s Registration Statement on Form S-8 as S.E.C. File No’s. 33-19652, 33-44103, 33-64323 and 333-39584 which is incorporated herein by reference).
10.2.4*	Unit Corporation Non-Employee Directors’ Stock Option Plan (filed as an Exhibit to Form S-8 as S.E.C. File No. 33-49724 and File No. 333-166605, which are incorporated herein by reference).
10.2.5*	Unit Corporation Employees’ Thrift Plan (filed as an Exhibit to Form S-8 as S.E.C. File No. 33-53542, which is incorporated herein by reference).
10.2.6	Unit Consolidated Employee Oil and Gas Limited Partnership Agreement (filed as an Exhibit to Unit’s Annual Report under cover of Form 10-K for the year ended December 31, 1993, which is incorporated herein by reference).
10.2.7*	Unit Corporation Salary Deferral Plan (filed as an Exhibit to Unit’s Annual Report under cover of Form 10-K for the year ended December 31, 1993, which is incorporated herein by reference).
10.2.8*	Unit Corporation Separation Benefit Plan for Senior Management as amended (filed as an Exhibit 10.1 to Unit’s Form 8-K dated December 20, 2004).
10.2.9*	Unit Corporation Special Separation Benefit Plan as amended (filed as Exhibit 10.3 to Unit’s Form 8-K dated December 20, 2004).
10.2.10	Unit 2000 Employee Oil and Gas Limited Partnership Agreement of Limited Partnership (filed as an Exhibit to Unit’s Annual Report under the cover of Form 10-K for the year ended December 31, 1999).
10.2.11*	Unit Corporation 2000 Non-Employee Directors’ Stock Option Plan (filed as an Exhibit to Form S-8 as S.E.C. File No. 333-38166, which is incorporated herein by reference).

114

10.2.12	Unit 2001 Employee Oil and Gas Limited Partnership Agreement of Limited Partnership (filed as an Exhibit to Unit’s Annual Report under the cover of Form 10-K for the year ended December 31, 2000).
10.2.13	Unit 2002 Employee Oil and Gas Limited Partnership Agreement of Limited Partnership (filed as an Exhibit to Unit’s Annual Report under cover of Form 10-K for the year ended December 31, 2001).
10.2.14	Unit 2003 Employee Oil and Gas Limited Partnership Agreement of Limited Partnership (filed as an Exhibit to Unit’s Annual Report under cover of Form 10-K for the year ended December 31, 2002).
10.2.15	Unit 2004 Employee Oil and Gas Limited Partnership Agreement of Limited Partnership (filed as an Exhibit to Unit’s Annual Report under cover of Form 10-K for the year ended December 31, 2003).
10.2.16	Unit 2005 Employee Oil and Gas Limited Partnership Agreement of Limited Partnership (filed as an Exhibit to Unit’s Annual Report under cover of Form 10-K for the year ended December 31, 2004).
10.2.17*	Form of Indemnification Agreement entered into between the Company and its executive officers and directors (filed as Exhibit 10.1 to Unit’s Form 8-K dated February 22, 2005, which is incorporated herein by reference).
10.2.18	Unit 2006 Employee Oil and Gas Limited Partnership Agreement of Limited Partnership (filed as an Exhibit to Unit’s Annual Report under cover of Form 10-K for the year ended December 31, 2005).
10.2.19	Unit 2007 Employee Oil and Gas Limited Partnership Agreement of Limited Partnership (filed as an Exhibit to Unit’s Annual Report under cover of Form 10-K for the year ended December 31, 2006).
10.2.20*	Separation Benefit Plan as amended August 21, 2007 (filed as an Exhibit to Unit’s Form 10-Q for the quarter ended September 30, 2007).
10.2.21	Unit 2008 Employee Oil and Gas Limited Partnership Agreement of Limited Partnership (filed as an Exhibit to Unit’s Annual Report under cover of Form 10-K for the year ended December 31, 2007).
10.2.22*	Annual Bonus Performance Plan entered into October 21, 2008 (filed as Exhibit 10.1 to Unit’s Form 8-K dated October 23, 2008, which is incorporated herein by reference).
10.2.23*	Separation Benefit Plan as amended October 21, 2008 (filed as Exhibit 10.2 to Unit’s Form 8-K dated October 23, 2008, which is incorporated herein by reference).
10.2.24*	Separation Benefit Plan as amended December 31, 2008 (filed as Exhibit 10.1 to Unit’s Form 8-K dated January 6, 2009, which is incorporated herein by reference).
10.2.25*	Special Separation Benefit Plan as amended December 31, 2008 (filed as Exhibit 10.2 to Unit’s Form 8-K dated January 6, 2009, which is incorporated herein by reference).
10.2.26*	Separation Benefit Plan for Senior Management as amended December 31, 2008 (filed as Exhibit 10.3 to Unit’s Form 8-K dated January 6, 2009, which is incorporated herein by reference).
10.2.27	Unit 2009 Employee Oil and Gas Limited Partnership Agreement of Limited Partnership (filed as an Exhibit to Unit’s Annual Report under cover of Form 10-K for the year ended December 31, 2008).
10.2.28*	Unit Corporation 2000 Non-Employee Directors’ Stock Option Plan as Amended and Restated August 25, 2004 (as amended on May 29, 2009 and filed as Exhibit 10.1 to Unit’s Form 8-K dated May 29, 2009, which is incorporated herein by reference).
10.2.29	Unit 2010 Employee Oil and Gas Limited Partnership Agreement of Limited Partnership (filed as an Exhibit to Unit’s Annual Report under cover of Form 10-K for the year ended December 31, 2009).
10.2.30	Unit 2011 Employee Oil and Gas Limited Partnership Agreement of Limited Partnership (filed as an Exhibit to Unit’s Annual Report under cover of Form 10-K for the year ended December 31, 2010).
21	Subsidiaries of the Registrant (filed herein).
23.1	Consent of Independent Registered Public Accounting Firm, PricewaterhouseCoopers LLP (filed herein).
23.2	Consent of Ryder Scott Company, L.P. (filed herein).
31.1	Certification of Chief Executive Officer under Rule 13a - 14(a) of the Exchange Act (filed herein).
31.2	Certification of Chief Financial Officer under Rule 13a - 14(a) of the Exchange Act (filed herein).

115

32	Certification of Chief Executive Officer and Chief Financial Officer under Rule 13a-14(a) of the Exchange Act and 18 U.S.C. Section 1350, as adopted under Section 906 of the Sarbanes-Oxley Act of 2002 (filed herein).
99.1	Ryder Scott Company, L.P. Summary Report (filed herein).
101.INS	XBRL Instance Document.
101.SCH	XBRL Taxonomy Extension Schema Document.
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document.
101.DEF	XBRL Taxonomy Extension Definition Linkbase Document.
101.LAB	XBRL Taxonomy Extension Labels Linkbase Document.
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document.

* Indicates a management contract or compensatory plan identified under the requirements of Item 15 of Form 10-K.

116

Schedule II

UNIT CORPORATION AND SUBSIDIARIES

VALUATION AND QUALIFYING ACCOUNTS AND RESERVES

Allowance for Doubtful Accounts:

Description	Balance  at Beginning of Period		Additions Charged  to Costs & Expenses		Deductions & Net Write-Offs			Balance at End of Period
	(In thousands)
Year ended December 31, 2013	$	5,343	$	—	$	(1	)	$	5,342
Year ended December 31, 2012	$	5,343	$	90	$	(90	)	$	5,343
Year ended December 31, 2011	$	5,083	$	260	$	—		$	5,343

117

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

			UNIT CORPORATION
DATE:	February 25, 2014	By:	/s/    LARRY D. PINKSTON
			LARRY D. PINKSTON
			President and Chief Executive Officer (Principal Executive Officer)

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the Registrant and in the capacities indicated on the 25th day of February, 2014.

Name	Title
/s/    JOHN G. NIKKEL	Chairman of the Board and Director
John G. Nikkel
/s/    LARRY D. PINKSTON	President and Chief Executive Officer,     Chief Operating Officer and Director     (Principal Executive Officer)
Larry D. Pinkston
/s/    DAVID T. MERRILL	Senior Vice President, Chief Financial Officer and     Treasurer (Principal Financial Officer)
David T. Merrill
/s/    DON A. HAYES	Vice President, Controller     (Principal Accounting Officer)
Don A. Hayes
/s/    J. MICHAEL ADCOCK	Director
J. Michael Adcock
/s/    GARY CHRISTOPHER	Director
Gary Christopher
/s/    STEVEN B. HILDEBRAND	Director
Steven B. Hildebrand
/s/    WILLIAM B. MORGAN	Director
William B. Morgan
/s/    LARRY C. PAYNE	Director
Larry C. Payne
/s/    G. BAILEY PEYTON IV	Director
G. Bailey Peyton IV
/s/    ROBERT SULLIVAN, JR.	Director
Robert Sullivan, Jr.

118

EXHIBIT INDEX

Exhibit No.	Description
21	Subsidiaries of the Registrant.
23.1	Consent of Independent Registered Public Accounting Firm, PricewaterhouseCoopers LLP.
23.2	Consent of Ryder Scott Company, L.P.
31.1	Certification of Chief Executive Officer under Rule 13a—14(a) of the Exchange Act.
31.2	Certification of Chief Financial Officer under Rule 13a—14(a) of the Exchange Act.
32	Certification of Chief Executive Officer and Chief Financial Officer under Rule 13a-14(a) of the Exchange Act and 18 U.S.C. Section 1350, as adopted under Section 906 of the Sarbanes-Oxley Act of 2002.
99.1	Ryder Scott Company, L.P. Summary Report.
101.INS	XBRL Instance Document.
101.SCH	XBRL Taxonomy Extension Schema Document.
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document.
101.DEF	XBRL Taxonomy Extension Definition Linkbase Document.
101.LAB	XBRL Taxonomy Extension Labels Linkbase Document.
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document.

119

EX-21

Exhibit 21

SUBSIDIARIES OF THE REGISTRANT

All the companies listed below are included in the company's consolidated financial statements. Except as otherwise indicated below, the Company has 100% direct or indirect ownership of, and ultimate voting control in, each of these companies. The list is as of December 31, 2013 and excludes subsidiaries which are primarily inactive or taken singly, or as a group, do not constitute significant subsidiaries:

	State or Province	Percentage
Subsidiary	of Incorporation	Owned
Unit Drilling Company	Oklahoma	100%
Unit Petroleum Company	Oklahoma	100%
Superior Pipeline Company, L.L.C.	Oklahoma	100%

EX-23.1

EXHIBIT 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in the Registration Statements on Form S-3 (File No. 333-173884) and Form S-8 (File Nos. 33-19652, 33-44103, 33-49724, 33-64323, 33-53542, 333-38166, 333-39584, 333-135194, 333-137857, 333-166605, and 333-181922) of Unit Corporation of our report dated February 25, 2014 relating to the financial statements, financial statement schedule, and the effectiveness of internal control over financial reporting, which appears in this Form 10-K.

/s/ PricewaterhouseCoopers LLP

Tulsa, Oklahoma

February 25, 2014

EX-23.2

Exhibit 23.2

CONSENT OF RYDER SCOTT COMPANY, L.P.

We hereby consent to incorporation by reference in the Registration Statements on Form S-3 (File No. 333-173884) and Form S-8 (File Nos. 33-19652, 33-44103, 33-49724, 33-64323, 33-53542, 333-38166, 333-39584, 333-135194, 333-137857, 333-166605, and 333-181922) of Unit Corporation of the reference to our reserves audit report for Unit Corporation dated January 17, 2014, which appears in the December 31, 2013 annual report on Form 10-K of Unit Corporation.

/s/ RYDER SCOTT COMPANY, L.P.

RYDER SCOTT COMPANY, L.P.

TBPE Firm Registration No. F-1580

Houston, Texas

February 25, 2014

EX-31.1

Exhibit 31.1

302 CERTIFICATIONS

I, Larry D. Pinkston, certify that:

1. I have reviewed this annual report on form 10-K of Unit Corporation;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes is accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5. The registrant's other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date: February 25, 2014

/s/ Larry D. Pinkston

LARRY D. PINKSTON

Chief Executive Officer and Director

EX-31.2

Exhibit 31.2

302 CERTIFICATIONS

I, David T. Merrill, certify that:

1. I have reviewed this annual report on form 10-K of Unit Corporation;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes is accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5. The registrant's other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date: February 25, 2014

/s/ David T. Merrill

DAVID T. MERRILL

Chief Financial Officer and Treasurer

EX-32

Exhibit 32

CERTIFICATION

PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

(SUBSECTIONS (A) AND (B) OF SECTION 1350, CHAPTER 63 OF TITLE 18, UNITED

STATES CODE)

Pursuant to section 906 of the Sarbanes-Oxley Act of 2002 (subsections (a) and (b) of section 1350, chapter 63 of title 18, United States Code), each of the undersigned officers of Unit Corporation a Delaware corporation (the "Company"), does hereby certify, to such officer's knowledge, that:

The Annual Report on Form 10-K for the year ended December 31, 2013 (the "Form 10-K") of the Company fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934 and information contained in the Form 10-K fairly presents, in all material respects, the financial condition and results of operations of the Company as of December 31, 2013 and December 31, 2012 and for the years ended December 31, 2013, 2012, and 2011.

Dated: February 25, 2014

By: /s/ Larry D. Pinkston

Larry D. Pinkston

Chief Executive Officer and Director

Dated: February 25, 2014

By: /s/ David T. Merrill

David T. Merrill

Chief Financial Officer and Treasurer

The foregoing certification is being furnished solely pursuant to section 906 of the Sarbanes-Oxley Act of 2002 (subsections (a) and (b) of section 1350, chapter 63 of title 18, United States Code) and is not being filed as part of the Form 10-K or as a separate disclosure document.

A signed original of this written statement required by Section 906 of the Sarbanes-Oxley Act of 2002 has been provided to Unit Corporation and will be retained by Unit Corporation and furnished to the Securities and Exchange Commission or its staff on request.

EX-99.1

UNIT CORPORATION

Estimated

Net Reserves

Certain Leasehold Interests

SEC Parameters

As of

December 31, 2013

\s\ Fred Richoux

Fred P. Richoux, P.E.

TBPE License No. 33949

President

[SEAL]

RYDER SCOTT COMPANY, L.P.

TBPE Firm Registration No. F-1580

RYDER SCOTT COMPANY PETROLEUM CONSULTANTS

January 17, 2014

Unit Corporation

1000 Kensington Tower

7130 South Lewis

Tulsa, Oklahoma 74170-2500

Gentlemen:

At the request of Unit Corporation (Unit), Ryder Scott Company, L.P. (Ryder Scott) has conducted a reserves audit of the estimates of the proved reserves as of December 31, 2013 prepared by Unit’s engineering and geological staff based on the definitions and disclosure guidelines of the United States Securities and Exchange Commission (SEC) contained in Title 17, Code of Federal Regulations, Modernization of Oil and Gas Reporting, Final Rule released January 14, 2009 in the Federal Register (SEC regulations). Our third party reserves audit, completed on January 16, 2014 and presented herein, was prepared for public disclosure by Unit in filings made with the SEC in accordance with the disclosure requirements set forth in the SEC regulations. The estimated reserves shown herein represent Unit’s estimated net reserves attributable to the leasehold interests in certain properties owned by Unit and the portion of those reserves reviewed by Ryder Scott, as of December 31, 2013. The properties reviewed by Ryder Scott incorporate 827 reserve determinations and are located in the states of Arkansas, Colorado, Kansas, Louisiana, New Mexico, North Dakota, Oklahoma, Texas, and Wyoming.

The properties reviewed by Ryder Scott account for a portion of Unit’s total net proved reserves as of December 31, 2013. Based on the estimates of total net proved reserves prepared by Unit, the reserves audit conducted by Ryder Scott addresses 80 percent of the total proved developed net liquid hydrocarbon reserves, 65.1 percent of the total proved developed net gas reserves, 70 percent of the total proved undeveloped net liquid hydrocarbon reserves, and 59 percent of the total proved undeveloped net gas reserves of Unit. The properties reviewed by Ryder Scott account for a portion of Unit’s total proved discounted future net income using SEC hydrocarbon price parameters as of December 31, 2013. Based on the reserve and income projections prepared by Unit, the audit conducted by Ryder Scott addresses 84 percent of the total proved developed discounted future net income and 91 percent of the total proved undeveloped discounted future net income of Unit.

As prescribed by the Society of Petroleum Engineers in Paragraph 2.2(f) of the Standards Pertaining to the Estimating and Auditing of Oil and Gas Reserves Information (SPE auditing standards), a reserves audit is defined as “the process of reviewing certain of the pertinent facts interpreted and assumptions made that have resulted in an estimate of reserves prepared by others and the rendering of an opinion about (1) the appropriateness of the methodologies employed; (2) the adequacy and quality of the data relied upon; (3) the depth and thoroughness of the reserves estimation process; (4) the classification of reserves appropriate to the relevant definitions used; and (5) the reasonableness of the estimated reserve quantities.”

Based on our review, including the data, technical processes and interpretations presented by Unit, it is our opinion that the overall procedures and methodologies utilized by Unit in preparing their estimates of the proved reserves as of December 31, 2013 comply with the current SEC regulations and that the overall proved reserves for the reviewed properties as estimated by Unit are, in the

SUITE 600, 1015 4TH STREET, S.W.    CALGARY, ALBERTA T2R 1J4    TEL (403) 262-2799    FAX (403) 262-2790

621 17TH STREET, SUITE 1550    DENVER, COLORADO 80293-1501    TEL (303) 623-9147    FAX (303) 623-4258

Unit Corporation

January 17, 2014

Page 2

aggregate, reasonable within the established audit tolerance guidelines of 10 percent as set forth in the SPE auditing standards.

The estimated reserves presented in this report are related to hydrocarbon prices. Unit has informed us that in the preparation of their reserve and income projections, as of December 31, 2013, they used average prices during the 12-month period prior to the ending date of the period covered in this report, determined as the unweighted arithmetic averages of the prices in effect on the first-day-of-the-month for each month within such period, unless prices were defined by contractual arrangements, as required by the SEC regulations. Actual future prices may vary significantly from the prices required by SEC regulations; therefore, volumes of reserves actually recovered and the amounts of income actually received may differ significantly from the estimated quantities presented in this report. The net reserves as estimated by Unit attributable to Unit's interest in properties that we reviewed and the reserves of properties that we did not review are summarized as follows:

SEC PARAMETERS

Estimated Net Reserves

Certain Leasehold Interests of

Unit Corporation

As of December 31, 2013

	Proved
	Developed			Total
	Producing	Non-Producing	Undeveloped	Proved
Net Reserves of Properties Audited by Ryder Scott
Oil/Condensate – MBarrels	9,863	2,425	4,120	16,408
Plant Products - MBarrels	19,877	4,648	7,684	32,209
Gas – MMCF	247,173	55,082	69,342	371,597
Net Reserves of Properties Not Audited by Ryder Scott
Oil/Condensate – MBarrels	2,045	1261	2,051	5,357
Plant Products –MBarrels	4,577	1,335	3,084	8,996
Gas – MMCF	119,293	42,686	48,208	210,187
Total Net Reserves
Oil/Condensate – MBarrels	11,908	3,686	6,171	21,765
Plant Products – MBarrels	24,454	5,983	10,768	41,205
Gas – MMCF	366,466	97,768	117,550	581,784

Liquid hydrocarbons are expressed in standard 42 gallon barrels. All gas volumes are reported on an “as sold basis” expressed in millions of cubic feet (MMCF) at the official temperature and pressure bases of the areas in which the gas reserves are located. The term M barrels denotes 1000’s of barrels.

Reserves Included in This Report

In our opinion, the proved reserves presented in this report conform to the definition as set forth in the Securities and Exchange Commission’s Regulations Part 210.4-10(a). An abridged version of the SEC reserves definitions from 210.4-10(a) entitled “Petroleum Reserves Definitions” is included as an attachment to this report.

RYDER SCOTT COMPANY PETROLEUM CONSULTANTS

Unit Corporation

January 17, 2014

Page 3

The various proved reserve status categories are defined under the attachment entitled “Petroleum Reserves Status and Definitions Guidelines” in this report. The proved developed non-producing reserves included herein consist of the shut-in and behind pipe categories.

Reserves are “estimated remaining quantities of oil and gas and related substances anticipated to be economically producible, as of a given date, by application of development projects to known accumulations.” All reserve estimates involve an assessment of the uncertainty relating the likelihood that the actual remaining quantities recovered will be greater or less than the estimated quantities determined as of the date the estimate is made. The uncertainty depends chiefly on the amount of reliable geologic and engineering data available at the time of the estimate and the interpretation of these data. The relative degree of uncertainty may be conveyed by placing reserves into one of two principal classifications, either proved or unproved. Unproved reserves are less certain to be recovered than proved reserves and may be further sub-classified as probable and possible reserves to denote progressively increasing uncertainty in their recoverability. At Unit’s request, this report addresses only the proved reserves attributable to the properties reviewed herein.

Proved oil and gas reserves are those quantities of oil and gas which, by analysis of geoscience and engineering data, can be estimated with reasonable certainty to be economically producible from a given date forward. The proved reserves included herein were estimated using deterministic methods. The SEC has defined reasonable certainty for proved reserves, when based on deterministic methods, as a “high degree of confidence that the quantities will be recovered.”

Provedreserve estimates will generally be revised only as additional geologic or engineering data become available or as economic conditions change. For proved reserves, the SEC states that “as changes due to increased availability of geoscience (geological, geophysical, and geochemical), engineering, and economic data are made to the estimated ultimate recovery (EUR) with time, reasonably certain EUR is much more likely to increase or remain constant than to decrease.” Moreover, estimates of proved reserves may be revised as a result of future operations, effects of regulation by governmental agencies or geopolitical or economic risks. Therefore, the proved reserves included in this report are estimates only and should not be construed as being exact quantities, and if recovered, could be more or less than the estimated amounts.

Audit Data, Methodology, Procedure and Assumptions

The estimation of reserves involves two distinct determinations. The first determination results in the estimation of the quantities of recoverable oil and gas and the second determination results in the estimation of the uncertainty associated with those estimated quantities in accordance with the definitions set forth by the Securities and Exchange Commission’s Regulations Part 210.4-10(a). The process of estimating the quantities of recoverable oil and gas reserves relies on the use of certain generally accepted analytical procedures. These analytical procedures fall into three broad categories or methods: (1) performance-based methods; (2) volumetric-based methods; and (3) analogy. These methods may be used singularly or in combination by the reserve evaluator in the process of estimating the quantities of reserves. Reserve evaluators must select the method or combination of methods which in their professional judgment is most appropriate given the nature and amount of reliable geoscience and engineering data available at the time of the estimate, the established or anticipated performance characteristics of the reservoir being evaluated and the stage of development or producing maturity of the property.

In many cases, the analysis of the available geoscience and engineering data and the subsequent interpretation of this data may indicate a range of possible outcomes in an estimate, irrespective of the method selected by the evaluator. When a range in the quantity of reserves is

RYDER SCOTT COMPANY PETROLEUM CONSULTANTS

Unit Corporation

January 17, 2014

Page 4

identified, the evaluator must determine the uncertainty associated with the incremental quantities of the reserves. If the reserve quantities are estimated using the deterministic incremental approach, the uncertainty for each discrete incremental quantity of the reserves is addressed by the reserve category assigned by the evaluator. Therefore, it is the categorization of reserve quantities as proved, probable and/or possible that addresses the inherent uncertainty in the estimated quantities reported. For proved reserves, uncertainty is defined by the SEC as reasonable certainty wherein the “quantities actually recovered are much more likely than not to be achieved.” The SEC states that “probable reserves are those additional reserves that are less certain to be recovered than proved reserves but which, together with proved reserves, are as likely as not to be recovered.” The SEC states that “possible reserves are those additional reserves that are less certain to be recovered than probable reserves and the total quantities ultimately recovered from a project have a low probability of exceeding proved plus probable plus possible reserves.” All quantities of reserves within the same reserve category must meet the SEC definitions as noted above.

Estimates of reserves quantities and their associated reserve categories may be revised in the future as additional geoscience or engineering data become available. Furthermore, estimates of reserves quantities and their associated reserve categories may also be revised due to other factors such as changes in economic conditions, results of future operations, effects of regulation by governmental agencies or geopolitical or economic risks as previously noted herein.

The proved reserves for the properties that we reviewed were estimated by performance methods, the volumetric method, analogy, or a combination of methods. Approximately 90 percent of the proved producing reserves attributable to producing wells and/or reservoirs that we reviewed were estimated by performance methods. These performance methods include, but may not be limited to, decline curve analysis and material balance which utilized extrapolations of historical production and pressure data available through October - December 2013, in those cases where such data were considered to be definitive. The data utilized in this analysis were furnished to Ryder Scott by Unit or obtained from public data sources and were considered sufficient for the purpose thereof. The remaining 10 percent of the proved producing reserves that we reviewed were estimated by the volumetric method, analogy, or a combination of methods. These methods were used where there were inadequate historical performance data to establish a definitive trend and where the use of production performance data as a basis for the reserve estimates was considered to be inappropriate.

Approximately 53 percent of the proved developed non-producing reserves that we reviewed were estimated by the volumetric method. Approximately 47 percent of the developed non-producing reserves that we reviewed were estimated by analogy. Approximately 98 percent of the proved undeveloped reserves that we reviewed were estimated by analogy. The other 2 percent was estimated by the volumetric method. The volumetric analysis utilized pertinent well and seismic data furnished to Ryder Scott by Unit for our review or which we have obtained from public data sources that were available through October - December 2013. The data utilized from the analogues in conjunction with well and seismic data incorporated into the volumetric analysis were considered sufficient for the purpose thereof.

To estimate economically recoverable proved oil and gas reserves, we consider many factors and assumptions including, but not limited to, the use of reservoir parameters derived from geological, geophysical and engineering data which cannot be measured directly, economic criteria based on current costs and SEC pricing requirements, and forecasts of future production rates. Under the SEC regulations 210.4-10(a)(22)(v) and (26), proved reserves must be anticipated to be economically producible from a given date forward based on existing economic conditions including the prices and costs at which economic producibility from a reservoir is to be determined. While it may reasonably be anticipated that the future prices received for the sale of production and the operating costs and other

RYDER SCOTT COMPANY PETROLEUM CONSULTANTS

Unit Corporation

January 17, 2014

Page 5

costs relating to such production may increase or decrease from those under existing economic conditions, such changes were, in accordance with rules adopted by the SEC, omitted from consideration in conducting this review.

As stated previously, proved reserves must be anticipated to be economically producible from a given date forward based on existing economic conditions including the prices and costs at which economic producibility from a reservoir is to be determined. To confirm that the proved reserves reviewed by us meet the SEC requirements to be economically producible, we have reviewed certain primary economic data utilized by Unit relating to hydrocarbon prices and costs as noted herein.

The hydrocarbon prices furnished by Unit for the properties reviewed by us are based on SEC price parameters using the average prices during the 12-month period prior to the ending date of the period covered in this report, determined as the unweighted arithmetic averages of the prices in effect on the first-day-of-the-month for each month within such period, unless prices were defined by contractual arrangements. For hydrocarbon products sold under contract, the contract prices, including fixed and determinable escalations exclusive of inflation adjustments, were used until expiration of the contract. Upon contract expiration, the prices were adjusted to the 12-month unweighted arithmetic average as previously described.

The initial SEC hydrocarbon prices in effect on December 31, 2013 for the properties reviewed by us were determined using the 12-month average first-day-of-the-month benchmark prices appropriate to the geographic area where the hydrocarbons are sold. These benchmark prices are prior to the adjustments for differentials as described herein. The table below summarizes the “benchmark prices” and “price reference” used by Unit for the geographic area reviewed by us. In certain geographic areas, the price reference and benchmark prices may be defined by contractual arrangements.

The product prices which were actually used by Unit to determine the future gross revenue for each property reviewed by us reflect adjustments to the benchmark prices for gravity, quality, local conditions, gathering and transportation fees and/or distance from market, referred to herein as “differentials.” The differentials used by Unitwere accepted as factual data, we have not conducted an independent verification of the data used by Unit.

The table below summarizes Unit’s net volume weighted benchmark prices adjusted for differentials for the properties reviewed by us and referred to herein as Unit’s “average realized prices.” The average realized prices shown in the table below were determined from Unit’s estimate of the total future gross revenue before production taxes for the properties reviewed by us and Unit’s estimate of the total net reserves for the properties reviewed by us for the geographic area. The data shown in the table below is presented in accordance with SEC disclosure requirements for each of the geographic areas reviewed by us.

Geographic Area	Product	Price Reference	Average Benchmark Prices	Average Realized Prices
United States	Oil/Condensate	WTI Cushing	$96.94/Bbl	$94.76/Bbl
	NGLs	Mont Belvieu Non TET Propane	$41.03/Bbl	$34.61/Bbl
	Gas	Henry Hub	$3.67/MMBTU	$3.58/MCF

RYDER SCOTT COMPANY PETROLEUM CONSULTANTS

Unit Corporation

January 17, 2014

Page 6

The effects of derivative instruments designated as price hedges of oil and gas quantities are not reflected in Unit’s individual property evaluations.

Accumulated gas production imbalances, if any, were not taken into account in the proved gas reserve estimates reviewed. In certain cases, the gas volumes presented herein include gas consumed in operations as reserves. In those cases, the effective price was reduced such that the fuel use had no value.

Operating costs furnished by Unit are based on the operating expense reports of Unit and include only those costs directly applicable to the leases or wells for the properties reviewed by us. The operating costs include a portion of general and administrative costs allocated directly to the leases and wells. For operated properties, the operating costs include an appropriate level of corporate general administrative and overhead costs. The operating costs for non-operated properties include the COPAS overhead costs that are allocated directly to the leases and wells under terms of operating agreements. The operating costs furnished by Unit were accepted as factual data, we have not conducted an independent verification of the data used by Unit. No deduction was made for loan repayments, interest expenses, or exploration and development prepayments that were not charged directly to the leases or wells.

Development costs furnished by Unit are based on authorizations for expenditure for the proposed work or actual costs for similar projects. The development costs furnished by Unit were accepted as factual data, we have not conducted an independent verification of the data used by Unit. Unit has informed us that abandonment costs are reported outside of this report; therefore, their projection of future net income associated with the reserve projections does not reflect abandonment cost.

The proved developed non-producing and undeveloped reserves for the properties reviewed by us have been incorporated herein in accordance with Unit’s plans to develop these reserves as of December 31, 2013. The implementation of Unit’s development plans as presented to us is subject to the approval process adopted by Unit’s management. As the result of our inquiries during the course of our review, Unit has informed us that the development activities for the properties reviewed by us have been subjected to and received the internal approvals required by Unit’s management at the appropriate local, regional and/or corporate level. In addition to the internal approvals as noted, certain development activities may still be subject to specific partner AFE processes, Joint Operating Agreement (JOA) requirements or other administrative approvals external to Unit. Unithas provided written documentation stating their commitment to proceed with the development activities as presented to us. Additionally, Unit has informed us that they are not aware of any legal, regulatory, political or economic obstacles that would significantly alter their plans.

Current costs used by Unit were held constant throughout the life of the properties.

Unit’s forecasts of future production rates are based on historical performance from wells currently on production. If no production decline trend has been established, future production rates were held constant, or adjusted for the effects of curtailment where appropriate, until a decline in ability to produce was anticipated. An estimated rate of decline was then applied to depletion of the reserves. If a decline trend has been established, this trend was used as the basis for estimating future production rates.

Test data and other related information were used by Unit to estimate the anticipated initial production rates for those wells or locations that are not currently producing. For reserves not yet on production, sales were estimated to commence at an anticipated date furnished by Unit. Wells or

RYDER SCOTT COMPANY PETROLEUM CONSULTANTS

Unit Corporation

January 17, 2014

Page 7

locations that are not currently producing may start producing earlier or later than anticipated in Unit’s estimates due to unforeseen factors causing a change in the timing to initiate production. Such factors may include delays due to weather, the availability of rigs, the sequence of drilling, completing and/or recompleting wells and/or constraints set by regulatory bodies.

The future production rates from wells currently on production or wells or locations that are not currently producing may be more or less than estimated because of changes including, but not limited to, reservoir performance, operating conditions related to surface facilities, compression and artificial lift, pipeline capacity and/or operating conditions, producing market demand and/or allowables or other constraints set by regulatory bodies.

Unit’s operations may be subject to various levels of governmental controls and regulations. These controls and regulations may include, but may not be limited to, matters relating to land tenure and leasing, the legal rights to produce hydrocarbons, drilling and production practices, environmental protection, marketing and pricing policies, royalties, various taxes and levies including income taxand are subject to change from time to time. Such changes in governmental regulations and policies may cause volumes of proved reserves actually recovered and amounts of proved income actually received to differ significantly from the estimated quantities.

The estimates of proved reserves presented herein were based upon a detailed study of the properties in which Unit owns an interest; however, we have not made any field examination of the properties. No consideration was given in this report to potential environmental liabilities that may exist nor were any costs included by Unit for potential liabilities to restore and clean up damages, if any, caused by past operating practices.

Certain technical personnel of Unit are responsible for the preparation of reserve estimates on new properties and for the preparation of revised estimates, when necessary, on old properties. These personnel assembled the necessary data and maintained the data and workpapers in an orderly manner. We consulted with these technical personnel and had access to their workpapers and supporting data in the course of our audit.

Unit has informed us that they have furnished us all of the material accounts, records, geological and engineering data, and reports and other data required for this investigation. In performing our audit of Unit’s forecast of future proved production, we have relied upon data furnished by Unit with respect to property interests owned, production and well tests from examined wells, normal direct costs of operating the wells or leases, other costs such as transportation and/or processing fees, ad valorem and production taxes, recompletion and development costs, abandonment costs after salvage, product prices based on the SEC regulations, adjustments or differentials to product prices, geological structural and isochore maps, well logs, core analyses, and pressure measurements. Ryder Scott reviewed such factual data for its reasonableness; however, we have not conducted an independent verification of the data furnished by Unit. We consider the factual data furnished to us by Unit to be appropriate and sufficient for the purpose of our review of Unit’s estimates of reserves. In summary, we consider the assumptions, data, methods and analytical procedures used by Unit and as reviewed by us appropriate for the purpose hereof, and we have used all such methods and procedures that we consider necessary and appropriate under the circumstances to render the conclusions set forth herein.

Audit Opinion

Based on our review, including the data, technical processes and interpretations presented by Unit, it is our opinion that the overall procedures and methodologies utilized by Unit in preparing their

RYDER SCOTT COMPANY PETROLEUM CONSULTANTS

Unit Corporation

January 17, 2014

Page 8

estimates of the proved reserves as of December 31, 2013 comply with the current SEC regulations and that the overall proved reservesfor the reviewed properties as estimated by Unit are, in the aggregate, reasonable within the established audit tolerance guidelines of 10 percent as set forth in the SPE auditing standards.

We were in reasonable agreement with Unit's estimates of proved reserves for the properties which we reviewed; although, in certain cases there was more than an acceptable variance between Unit's estimates and our estimates due to a difference in interpretation of data or due to our having access to data which were not available to Unit when its reserve estimates were prepared. However, not withstanding, it is our opinion that on an aggregate basis the data presented herein for the properties that we reviewed fairly reflects the estimated net reserves owned by Unit.

Other Properties

Other properties, as used herein, are those properties of Unit which we did not review. The proved net reserves attributable to the other properties account for 23 percent of the total proved net liquid hydrocarbon reserves and 36 percent of the total proved net gas reserves based on estimates prepared by Unit as of December 31, 2013.

The same technical personnel of Unit were responsible for the preparation of the reserve estimates for the properties that we reviewed as well as for the properties not reviewed by Ryder Scott.

Standards of Independence and Professional Qualification

Ryder Scott is an independent petroleum engineering consulting firm that has been providing petroleum consulting services throughout the world for over seventy-five years. Ryder Scott is employee-owned and maintains offices in Houston, Texas; Denver, Colorado; and Calgary, Alberta, Canada. We have over eighty engineers and geoscientists on our permanent staff. By virtue of the size of our firm and the large number of clients for which we provide services, no single client or job represents a material portion of our annual revenue. We do not serve as officers or directors of any privately-owned or publicly-traded oil and gas company and are separate and independent from the operating and investment decision-making process of our clients. This allows us to bring the highest level of independence and objectivity to each engagement for our services.

Ryder Scott actively participates in industry-related professional societies and organizes an annual public forum focused on the subject of reserves evaluations and SEC regulations. Many of our staff have authored or co-authored technical papers on the subject of reserves related topics. We encourage our staff to maintain and enhance their professional skills by actively participating in ongoing continuing education.

Prior to becoming an officer of the Company, Ryder Scott requires that staff engineers and geoscientists have received professional accreditation in the form of a registered or certified professional engineer’s license or a registered or certified professional geoscientist’s license, or the equivalent thereof, from an appropriate governmental authority or a recognized self-regulating professional organization.

We are independent petroleum engineers with respect to Unit. Neither we nor any of our employees have any interest in the subject properties, and neither the employment to do this work nor the compensation is contingent on our estimates of reserves for the properties which were reviewed.

RYDER SCOTT COMPANY PETROLEUM CONSULTANTS

Unit Corporation

January 17, 2014

Page 9

The results of this audit, presented herein, are based on technical analysis conducted by teams of geoscientists and engineers from Ryder Scott. The professional qualifications of the undersigned, the technical person primarily responsible for overseeing the review of the reserves information discussed in this report, are included as an attachment to this letter.

Terms of Usage

The results of our third party audit, presented in report form herein, were prepared in accordance with the disclosure requirements set forth in the SEC regulations and intended for public disclosure as an exhibit in filings made with the SEC by Unit.

Unit makes periodic filings on Form 10-K with the SEC under the 1934 Exchange Act. Furthermore, Unit has certain registration statements filed with the SEC under the 1933 Securities Act into which any subsequently filed Form 10-K is incorporated by reference. We have consented to the incorporation by reference in the registration statements on Form S-8 of Unit of the references to our name as well as to the references to our third party report for Unit, which appears in the December 31, 2013 annual report on Form 10-K of Unit. Our written consent for such use is included as a separate exhibit to the filings made with the SEC by Unit.

We have provided Unit with a digital version of the original signed copy of this report letter. In the event there are any differences between the digital version included in filings made by Unit and the original signed report letter, the original signed report letter shall control and supersede the digital version.

The data and work papers used in the preparation of this report are available for examination by authorized parties in our offices. Please contact us if we can be of further service.

Very truly yours,

RYDER SCOTT COMPANY, L.P.

TBPE Firm Registration No. F-1580

\s\ Fred Richoux

Fred Richoux, P.E.

TBPE License No. 33949

President

[SEAL]

FPR/pl

RYDER SCOTT COMPANY PETROLEUM CONSULTANTS

Professional Qualifications of Primary Technical Person

The conclusions presented in this report are the result of technical analysis conducted by teams of geoscientists and engineers from Ryder Scott Company, L.P. Fred Richoux was the primary technical person responsible for preparing the estimates of reserves presented herein.

Richoux, an employee of Ryder Scott Company, L.P. (Ryder Scott) since 1978, is the President and member of the Board of Directors at Ryder Scott. He is responsible for coordinating and supervising staff and consulting engineers of the company in ongoing reservoir evaluation studies worldwide as well as other administrative functions at the Company. Before joining Ryder Scott, Richoux served in a number of engineering positions with Phillips Petroleum Company. For more information regarding Mr. Richoux’s geographic and job specific experience, please refer to the Ryder Scott Company website at www.ryderscott.com/Experience/Employees.

Richoux earned a Bachelor of Science degree in Electrical Engineering from the University of Louisiana at Lafayette and is a registered Professional Engineer in the State of Texas and the Province of Alberta. He is also a member of the Society of Petroleum Engineers and the Society of Petroleum Evaluation Engineers.

In addition to gaining experience and competency through prior work experience, the Texas Board of Professional Engineers requires a minimum of fifteen hours of continuing education annually, including at least one hour in the area of professional ethics, which Richoux fulfills.

Based on his educational background, professional training and more than 45 years of practical experience in the estimation and evaluation of petroleum reserves, Richoux has attained the professional qualifications as a Reserves Estimator [requires appropriate degree and/or is registered as Professional Engineer and has a minimum of 3 years experience in the estimation and evaluation of reserves] and Reserves Auditor [requires appropriate degree and/or is registered as Professional Engineer and has a minimum of 10 years experience in the estimation and evaluation of reserves of which at least 5 years of such experience is being in responsible charge of the estimation and evaluation of reserves] set forth in Article III of the “Standards Pertaining to the Estimating and Auditing of Oil and Gas Reserves Information” promulgated by the Society of Petroleum Engineers as of February 19, 2007.

RYDER SCOTT COMPANY PETROLEUM CONSULTANTS

PETROLEUM RESERVES DEFINITIONS

As Adapted From:

RULE 4-10(a) of REGULATION S-X PART 210

UNITED STATES SECURITIES AND EXCHANGE COMMISSION (SEC)

PREAMBLE

On January 14, 2009, the United States Securities and Exchange Commission (SEC) published the “Modernization of Oil and Gas Reporting; Final Rule” in the Federal Register of National Archives and Records Administration (NARA). The “Modernization of Oil and Gas Reporting; Final Rule” includes revisions and additions to the definition section in Rule 4-10 of Regulation S-X, revisions and additions to the oil and gas reporting requirements in Regulation S-K, and amends and codifies Industry Guide 2 in Regulation S-K. The “Modernization of Oil and Gas Reporting; Final Rule”, including all references to Regulation S-X and Regulation S-K, shall be referred to herein collectively as the “SEC regulations”. The SEC regulations take effect for all filings made with the United States Securities and Exchange Commission as of December 31, 2009, or after January 1, 2010. Reference should be made to the full text under Title 17, Code of Federal Regulations, Regulation S-X Part 210, Rule 4-10(a) for the complete definitions (direct passages excerpted in part or wholly from the aforementioned SEC document are denoted in italics herein).

Reserves are estimated remaining quantities of oil and gas and related substances anticipated to be economically producible, as of a given date, by application of development projects to known accumulations. All reserve estimates involve an assessment of the uncertainty relating the likelihood that the actual remaining quantities recovered will be greater or less than the estimated quantities determined as of the date the estimate is made. The uncertainty depends chiefly on the amount of reliable geologic and engineering data available at the time of the estimate and the interpretation of these data. The relative degree of uncertainty may be conveyed by placing reserves into one of two principal classifications, either proved or unproved. Unproved reserves are less certain to be recovered than proved reserves and may be further sub-classified as probable and possible reserves to denote progressively increasing uncertainty in their recoverability. Under the SEC regulations as of December 31, 2009, or after January 1, 2010, a company may optionally disclose estimated quantities of probable or possible oil and gas reserves in documents publicly filed with the SEC. The SEC regulations continue to prohibit disclosure of estimates of oil and gas resources other than reserves and any estimated values of such resources in any document publicly filed with the SEC unless such information is required to be disclosed in the document by foreign or state law as noted in §229.1202 Instruction to Item 1202.

Reserves estimates will generally be revised only as additional geologic or engineering data become available or as economic conditions change.

Reserves may be attributed to either natural energy or improved recovery methods. Improved recovery methods include all methods for supplementing natural energy or altering natural forces in the reservoir to increase ultimate recovery. Examples of such methods are pressure maintenance, natural gas cycling, waterflooding, thermal methods, chemical flooding, and the use of miscible and immiscible displacement fluids. Other improved recovery methods may be developed in the future as petroleum technology continues to evolve.

Reserves may be attributed to either conventional or unconventional petroleum accumulations. Petroleum accumulations are considered as either conventional or unconventional based on the nature of their in-place characteristics, extraction method applied, or degree of processing prior to sale. Examples of unconventional petroleum accumulations include coalbed or coalseam methane

RYDER SCOTT COMPANY PETROLEUM CONSULTANTS

PETROLEUM RESERVES DEFINITIONS

Page 2

(CBM/CSM), basin-centered gas, shale gas, gas hydrates, natural bitumen and oil shale deposits. These unconventional accumulations may require specialized extraction technology and/or significant processing prior to sale.

Reserves do not include quantities of petroleum being held in inventory.

Because of the differences in uncertainty, caution should be exercised when aggregating quantities of petroleum from different reserves categories.

RESERVES (SEC DEFINITIONS)

Securities and Exchange Commission Regulation S-X §210.4-10(a)(26) defines reserves as follows:

Reserves. Reserves are estimated remaining quantities of oil and gas and related substances anticipated to be economically producible, as of a given date, by application of development projects to known accumulations. In addition, there must exist, or there must be a reasonable expectation that there will exist, the legal right to produce or a revenue interest in the production, installed means of delivering oil and gas or related substances to market, and all permits and financing required to implement the project.

Note to paragraph (a)(26): Reserves should not be assigned to adjacent reservoirs isolated by major, potentially sealing, faults until those reservoirs are penetrated and evaluated as economically producible. Reserves should not be assigned to areas that are clearly separated from a known accumulation by a non-productive reservoir (i.e., absence of reservoir, structurally low reservoir, or negative test results). Such areas may contain prospective resources (i.e., potentially recoverable resources from undiscovered accumulations).

PROVED RESERVES (SEC DEFINITIONS)

Securities and Exchange Commission Regulation S-X §210.4-10(a)(22) defines proved oil and gas reserves as follows:

Proved oil and gas reserves. Proved oil and gas reserves are those quantities of oil and gas, which, by analysis of geoscience and engineering data, can be estimated with reasonable certainty to be economically producible-from a given date forward, from known reservoirs, and under existing economic conditions, operating methods, and government regulations-prior to the time at which contracts providing the right to operate expire, unless evidence indicates that renewal is reasonably certain, regardless of whether deterministic or probabilistic methods are used for the estimation. The project to extract the hydrocarbons must have commenced or the operator must be reasonably certain that it will commence the project within a reasonable time.

(i) The area of the reservoir considered as proved includes:

(A) The area identified by drilling and limited by fluid contacts, if any, and

(B) Adjacent undrilled portions of the reservoir that can, with reasonable certainty, be judged to be continuous with it and to contain economically producible oil or gas on the basis of available geoscience and engineering data.

RYDER SCOTT COMPANY PETROLEUM CONSULTANTS

PETROLEUM RESERVES DEFINITIONS

Page 3

PROVED RESERVES (SEC DEFINITIONS) CONTINUED

(ii) In the absence of data on fluid contacts, proved quantities in a reservoir are limited by the lowest known hydrocarbons (LKH) as seen in a well penetration unless geoscience, engineering, or performance data and reliable technology establishes a lower contact with reasonable certainty.

(iii) Where direct observation from well penetrations has defined a highest known oil (HKO) elevation and the potential exists for an associated gas cap, proved oil reserves may be assigned in the structurally higher portions of the reservoir only if geoscience, engineering, or performance data and reliable technology establish the higher contact with reasonable certainty.

(iv) Reserves which can be produced economically through application of improved recovery techniques (including, but not limited to, fluid injection) are included in the proved classification when:

(A) Successful testing by a pilot project in an area of the reservoir with properties no more favorable than in the reservoir as a whole, the operation of an installed program in the reservoir or an analogous reservoir, or other evidence using reliable technology establishes the reasonable certainty of the engineering analysis on which the project or program was based; and

(B) The project has been approved for development by all necessary parties and entities, including governmental entities.

(v) Existing economic conditions include prices and costs at which economic producibility from a reservoir is to be determined. The price shall be the average price during the 12-month period prior to the ending date of the period covered by the report, determined as an unweighted arithmetic average of the first-day-of-the-month price for each month within such period, unless prices are defined by contractual arrangements, excluding escalations based upon future conditions.

RYDER SCOTT COMPANY PETROLEUM CONSULTANTS

PETROLEUM RESERVES STATUS DEFINITIONS AND GUIDELINES

As Adapted From:

RULE 4-10(a) of REGULATION S-X PART 210

UNITED STATES SECURITIES AND EXCHANGE COMMISSION (SEC)

and

PETROLEUM RESOURCES MANAGEMENT SYSTEM (SPE-PRMS)

Sponsored and Approved by:

SOCIETY OF PETROLEUM ENGINEERS (SPE)

WORLD PETROLEUM COUNCIL (WPC)

AMERICAN ASSOCIATION OF PETROLEUM GEOLOGISTS (AAPG)

SOCIETY OF PETROLEUM EVALUATION ENGINEERS (SPEE)

Reserves status categories define the development and producing status of wells and reservoirs. Reference should be made to Title 17, Code of Federal Regulations, Regulation S-X Part 210, Rule 4-10(a) and the SPE-PRMS as the following reserves status definitions are based on excerpts from the original documents (direct passages excerpted from the aforementioned SEC and SPE-PRMS documents are denoted in italics herein).

DEVELOPED RESERVES (SEC DEFINITIONS)

Securities and Exchange Commission Regulation S-X §210.4-10(a)(6) defines developed oil and gas reserves as follows:

Developed oil and gas reserves are reserves of any category that can be expected to be recovered:

(i) Through existing wells with existing equipment and operating methods or in which the cost of the required equipment is relatively minor compared to the cost of a new well; and

(ii) Through installed extraction equipment and infrastructure operational at the time of the reserves estimate if the extraction is by means not involving a well.

Developed Producing (SPE-PRMS Definitions)

While not a requirement for disclosure under the SEC regulations, developed oil and gas reserves may be further sub-classified according to the guidance contained in the SPE-PRMS as Producing or Non-Producing.

Developed Producing Reserves

Developed Producing Reserves are expected to be recovered from completion intervals that are open and producing at the time of the estimate.

Improved recovery reserves are considered producing only after the improved recovery project is in operation.

RYDER SCOTT COMPANY PETROLEUM CONSULTANTS

PETROLEUM RESERVES STATUS DEFINITIONS AND GUIDLINES

Page 2

Developed Non-Producing

Developed Non-Producing Reserves include shut-in and behind-pipe reserves.

Shut-In

Shut-in Reserves are expected to be recovered from:

(1) completion intervals which are open at the time of the estimate, but which have not started producing;

(2) wells which were shut-in for market conditions or pipeline connections; or

(3) wells not capable of production for mechanical reasons.

Behind-Pipe

Behind-pipe Reserves are expected to be recovered from zones in existing wells, which will require additional completion work or future re-completion prior to start of production.

In all cases, production can be initiated or restored with relatively low expenditure compared to the cost of drilling a new well.

UNDEVELOPED RESERVES (SEC DEFINITIONS)

Securities and Exchange Commission Regulation S-X §210.4-10(a)(31) defines undeveloped oil and gas reserves as follows:

Undeveloped oil and gas reserves are reserves of any category that are expected to be recovered from new wells on undrilled acreage, or from existing wells where a relatively major expenditure is required for recompletion.

(i) Reserves on undrilled acreage shall be limited to those directly offsetting development spacing areas that are reasonably certain of production when drilled, unless evidence using reliable technology exists that establishes reasonable certainty of economic producibility at greater distances.

(ii) Undrilled locations can be classified as having undeveloped reserves only if a development plan has been adopted indicating that they are scheduled to be drilled within five years, unless the specific circumstances, justify a longer time.

(iii) Under no circumstances shall estimates for undeveloped reserves be attributable to any acreage for which an application of fluid injection or other improved recovery technique is contemplated, unless such techniques have been proved effective by actual projects in the same reservoir or an analogous reservoir, as defined in paragraph (a)(2) of this section, or by other evidence using reliable technology establishing reasonable certainty.

RYDER SCOTT COMPANY PETROLEUM CONSULTANTS

XML

Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2013

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule Of Restricted Stock Awards Stock Options And SAR

For restricted stock awards and stock options, we had:

	2013		2012		2011
	(In millions)
Recognized stock compensation expense	$	16.1	$	11.4	$	10.0
Capitalized stock compensation cost for our oil and natural gas properties	3.5		2.7		2.5
Tax benefit on stock based compensation	6.2		4.5		3.9

Estimated Fair Value Of The Stock Options Granted

The table below shows the estimates of the fair value of stock options granted to our non-employee directors under the option plan in 2011 using the Black-Scholes model and applying the estimated values also presented in the table:

	2011
Options granted	31,500
Estimated fair value (in millions)	$	0.7
Estimate of stock volatility	0.48
Estimated dividend yield	—		%
Risk free interest rate	2		%
Expected life range based on prior experience (in years)	5
Forfeiture rate	—		%

Activity Pertaining to Stock Appreciation Rights

Activity pertaining to SARs granted under the Unit Corporation Stock and Incentive Compensation Plan is as follows:

	Number of Shares	Weighted Average Grant Date Price
Outstanding at January 1, 2011	145,901	$	46.59
Granted	—	—
Exercised	—	—
Forfeited	—	—
Outstanding at December 31, 2011	145,901	46.59
Granted	—	—
Exercised	—	—
Forfeited	—	—
Outstanding at December 31, 2012	145,901	46.59
Granted	—	—
Exercised	—	—
Forfeited	—	—
Outstanding at December 31, 2013	145,901	$	46.59

Activity Pertaining To Restricted Stock Awards

Activity pertaining to restricted stock awards granted under the amended plan is as follows:

Employees	Number of Shares		Weighted Average Grant Date Price
Nonvested at January 1, 2011	446,125		$	47.39
Granted	211,050		55.91
Vested	(190,262	)	43.32
Forfeited	(18,952	)	44.55
Nonvested at December 31, 2011	447,961		47.44
Granted	376,445		47.37
Vested	(220,788	)	45.66
Forfeited	(14,091	)	45.37
Nonvested at December 31, 2012	589,527		48.11
Granted	453,549		48.20
Vested	(248,003	)	46.46
Forfeited	(18,330	)	47.85
Nonvested at December 31, 2013	776,743		$	48.70

Non-Employee Directors	Number of Shares		Weighted Average Grant Date Price
Nonvested at December 31, 2011	—		$	—
Granted	24,606		40.23
Vested	—		—
Forfeited	—		—
Nonvested at December 31, 2012	24,606		$	40.23
Granted	21,128		41.65
Vested	(10,030	)	40.23
Forfeited	—		—
Nonvested at December 31, 2013	35,704		$	41.07

Activity Pertaining to the Stock Option Plan

Activity pertaining to the Stock Option Plan is as follows:

	Number of Shares		Weighted Average Exercise Price
Outstanding at January 1, 2011	184,765		$	31.11
Granted	—		—
Exercised	(42,285	)	28.29
Forfeited	(3,500	)	53.90
Outstanding at December 31, 2011	138,980		31.39
Granted	—		—
Exercised	(18,850	)	20.38
Forfeited	(2,100	)	37.83
Outstanding at December 31, 2012	118,030		33.03
Granted	—		—
Exercised	(48,110	)	26.09
Forfeited	(1,000	)	37.83
Outstanding at December 31, 2013	68,920		$	37.81

Activity Pertaining to Nonemployee Director Stock Award Plan

Activity pertaining to the Directors’ Plan is as follows:

	Number of Shares		Weighted Average Exercise Price
Outstanding at January 1, 2011	178,500		$	48.77
Granted	31,500		53.81
Exercised	(10,500	)	21.96
Forfeited	—		—
Outstanding at December 31, 2011	199,500		48.37
Granted	—		—
Exercised	(7,000	)	20.28
Forfeited	—		—
Outstanding at December 31, 2012	192,500		49.39
Granted	—		—
Exercised	(17,500	)	32.53
Forfeited	(3,500	)	20.46
Outstanding at December 31, 2013	171,500		$	51.70

Shares Authorized Under Stock Option Plans By Exercise Price Range

	Outstanding and Exercisable Options at December 31, 2013
Exercise Prices	Number of Shares	Weighted Average Remaining Contractual Life	Weighted Average Exercise Price
$37.69 - $37.83	68,920	1.0 year	$37.81

	Outstanding and Exercisable Options at December 31, 2013
Weighted Average Exercise Price	Number of Shares	Weighted Average Remaining Contractual Life	Weighted Average Exercise Price
$28.23 - $41.21	66,500	4.6 years	$	36.64
$53.81 - $73.26	105,000	4.5 years	$	61.24

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Accrued Liabilities (Accrued Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Accrued Liabilities [Abstract]
Employee costs	$ 27,633	$ 24,632
Lease operating expenses	16,073	10,903
Interest Payable	6,504	6,568
Deposits on assets held for sale	3,750	0
Taxes	2,313	7,308
Hedge settlements	416	160
Other	7,674	4,527
Total accrued liabilities	$ 64,363	$ 54,098

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Summary Of Significant Accounting Policies (Narrative) (Details) (USD $)	3 Months Ended		12 Months Ended
	Dec. 31, 2012	Jun. 30, 2012	Dec. 31, 2013 contract Unit	Dec. 31, 2012	Dec. 31, 2011
Summary Of Significant Accounting Policies [Line Items]
Number of daywork contracts			23
Number of contracts, daywork expiring in one year			22
Number of contracts, daywork expiring in two years			1
Book overdrafts	$ 7,000,000		$ 0	$ 7,000,000
Concentration of cash	40,400,000		52,100,000	40,400,000
Minimum depreciation percentage for idle drilling rigs			20.00%
Impairment of long-lived assets held-for-use	1,200,000		0	1,200,000	0
Goodwill impairment			0	0	0
Additions to goodwill			0	0	0
Goodwill deductible for tax purposes			3,900,000
Intangible asset impairment			0	0	0
Amortization on intangible assets			700,000	1,200,000	1,200,000
Accumulated amortization on intangible assets	17,300,000		18,000,000	17,300,000
Amortization to be recorded in 2014 on intangible assets			0
Directly related overhead costs capitalized	17,600,000		21,500,000	17,600,000	15,600,000
Average rates used for depreciation, depletion and amortization per Boe			13.32	14.70	15.06
Unproved properties not being amortized	521,659,000		545,588,000	521,659,000	185,632,000
Future discounted net cash flows discounted			10.00%
Impairment of oil and natural gas properties	167,700,000	115,900,000	0	283,606,000	0
Non-cash ceiling test write-down net of tax	104,400,000	72,100,000
Effects of cash flow hedges	29,800,000	32,500,000
Revenues from transactions with operating segments of same entity			64,300,000	49,600,000	52,200,000
Eliminated associated operating expense			46,900,000	34,100,000	32,600,000
Eliminated yielding			17,400,000	15,500,000	19,600,000
Number of partnerships			16
Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Number of days for drilling of one well			20 days
Duration length of contracts			0 years 6 months
Insurance coverage			50,000
Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Number of days for drilling of one well			90 days
Duration length of contracts			3 years
Insurance coverage			1,500,000
Under-Produced Properties [Member]
Summary Of Significant Accounting Policies [Line Items]
Natural gas balancing (MMcf)			5,200
Over-Produced Properties [Member]
Summary Of Significant Accounting Policies [Line Items]
Natural gas balancing (MMcf)			4,500
Natural Gas Balancing [Member]
Summary Of Significant Accounting Policies [Line Items]
Accounts receivable			2,000,000
Liability recognized to under production			$ 3,800,000
Jul'12 - Dec'12 [Member]
Summary Of Significant Accounting Policies [Line Items]
Portion of future oil and gas production being hedged, as of the reporting period (MMBoe)		2.9
Jan'13 - Dec'13 [Member]
Summary Of Significant Accounting Policies [Line Items]
Portion of future oil and gas production being hedged, as of the reporting period (MMBoe)	6.9	4.5
Property, Plant and Equipment, Other Types [Member] | Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Useful life, years			3 years
Property, Plant and Equipment, Other Types [Member] | Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Useful life, years			15 years
Drilling Equipment [Member] | Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Useful life, years			15 years

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Stock-Based Compensation (Activity Pertaining To Restricted Stock Awards) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares, beginning balance	589,527	447,961	446,125
Weighted average grant date price, beginning balance	$ 48.11	$ 47.44	$ 47.39
Number of shares, granted	453,549	376,445	211,050
Weighted average grant date price, granted	$ 48.20	$ 47.37	$ 55.91
Number of Shares, Vested	(248,003)	(220,788)	(190,262)
Weighted average grant date price, exercised	$ 46.46	$ 45.66	$ 43.32
Number of shares, forfeited	(18,330)	(14,091)	(18,952)
Weighted average grant date price, forfeited	$ 47.85	$ 45.37	$ 44.55
Number of shares, ending balance	776,743	589,527	447,961
Weighted average grant date price, ending balance	$ 48.70	$ 48.11	$ 47.44
Non-employee Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares, beginning balance	24,606	0
Weighted average grant date price, beginning balance	$ 40.23	$ 0.00
Number of shares, granted	21,128	24,606
Weighted average grant date price, granted	$ 41.65	$ 40.23
Number of Shares, Vested	(10,030)	0
Weighted average grant date price, exercised	$ 40.23	$ 0.00
Number of shares, forfeited	0	0
Weighted average grant date price, forfeited	$ 0.00	$ 0.00
Number of shares, ending balance	35,704	24,606
Weighted average grant date price, ending balance	$ 41.07	$ 40.23

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Long-Term Debt And Other Long-Term Liabilities (Long-Term Debt) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Long-term debt and other long-term liabilites [Abstract]
Credit agreement with an average interest rates of 2.9% at December 31, 2012	$ 0	$ 71,100,000
6.625% senior subordinated notes due 2021, net of unamortized discount of $4.3 million and $4.7 million at December 31, 2013 and 2012, respectively	645,696,000	645,259,000
Total long-term debt	645,696,000	716,359,000
Line of Credit Facility, Interest Rate at Period End	0.00%	2.90%
Debt Instrument, Unamortized Discount	$ 4,300,000	$ 4,700,000

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Derivatives (Amount Of Gain Or (Loss) Recognized In Accumulated OCI On Derivative) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Amount of Gain Recognized in Accumulated OCI on Derivative	$ 0	[1]	$ 7,587	[1]

[1] Net of taxes.

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Summary Of Significant Accounting Policies (Schedule Of Segment's Revenues) (Details)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Valero Energy Corporation | Oil and Natural Gas [Member]
Revenue, Major Customer [Line Items]
Segment's revenues	25.30%	26.00%	18.00%
Sunoco Partners Marketing | Oil and Natural Gas [Member]
Revenue, Major Customer [Line Items]
Segment's revenues	7.50%	8.00%	10.00%
QEP Resources, Inc. | Drilling [Member]
Revenue, Major Customer [Line Items]
Segment's revenues	18.00%	15.00%	22.00%
Kodiak Oil and Gas Corp. | Drilling [Member]
Revenue, Major Customer [Line Items]
Segment's revenues	10.00%	10.00%	6.00%
ONEOK, Inc. | Mid-Stream [Member]
Revenue, Major Customer [Line Items]
Segment's revenues	50.19%	54.00%	54.00%
Tenaska Resources, LLC | Mid-Stream [Member]
Revenue, Major Customer [Line Items]
Segment's revenues	16.37%	7.00%	1.38%
Gavilon, LLC | Mid-Stream [Member]
Revenue, Major Customer [Line Items]
Segment's revenues	0.00%	10.00%	19.00%

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Earnings Per Share Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2013

Earnings Per Share [Abstract]

Schedule of Earnings Per Share [Table Text Block]

The following data shows the amounts used in computing earnings per share:

	Income (Numerator)		Weighted Shares (Denominator)	Per-Share Amount
	(In thousands except per share amounts)
For the year ended December 31, 2013:
Basic earnings per common share	$	184,746	48,218	$	3.83
Effect of dilutive stock options, restricted stock, and SARs	—		354	(0.03		)
Diluted earnings per common share	$	184,746	48,572	$	3.80
For the year ended December 31, 2012:
Basic earnings per common share	$	23,176	47,909	$	0.48
Effect of dilutive stock options, restricted stock, and SARs	—		245	—
Diluted earnings per common share	$	23,176	48,154	$	0.48
For the year ended December 31, 2011:
Basic earnings per common share	$	195,867	47,658	$	4.11
Effect of dilutive stock options, restricted stock, and SARs	—		293	(0.03		)
Diluted earnings per common share	$	195,867	47,951	$	4.08

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]

The following options and their average exercise prices were not included in the computation of diluted earnings per share because the option exercise prices were greater than the average market price of our common stock for the years ended December 31:

	2013		2012		2011
Options and SARs	149,665		250,901		105,000
Average exercise price	$	58.41	$	52.72	$	61.24

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Derivatives (Gain Or Loss Of Reclassified Accumulated Other Comprehensive Income And Recognized Income) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income	$ 603		$ 51,853		$ 2,965
Amount of Gain or (Loss) Recognized in Income	(190)		(2,616)
Commodity Derivatives [Member] | Oil and natural gas revenue [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income	603	[1]	51,853	[1]	2,965	[1]
Commodity Derivatives [Member] | Gain (loss) on derivatives not designated as hedges and hedge ineffectiveness [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain on Derivative	$ (190)	[2]	$ (2,616)	[2]	$ 2,749	[2]

[1] Effective portion of gain (loss).

[2] Ineffective portion of gain (loss).

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Stock-Based Compensation Stock-Based Compensation (Activity Pertaining to Nonemployee Director Stock Award Plan) (Details) (Directors Plan [Member], USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Directors Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Beginning Balance	192,500	199,500	178,500
Weighted average grant date price, beginning balance	$ 49.39	$ 48.37	$ 48.77
Number of Shares, Granted	0	0	31,500
Weighted average grant date price, granted	$ 0.00	$ 0.00	$ 53.81
Number of Shares, Exercised	(17,500)	(7,000)	(10,500)
Weighted Average Grant Date Price, Exercised	$ 32.53	$ 20.28	$ 21.96
Number of Shares, Forfeited	(3,500)	0	0
Weighted average grant date price, forfeited	$ 20.46	$ 0.00	$ 0.00
Number of Shares, Ending Balance	171,500	192,500	199,500
Weighted average grant date price, ending balance	$ 51.70	$ 49.39	$ 48.37

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Industry Segment Information (Revenue From Different Segments) (Details) (USD $)	3 Months Ended										12 Months Ended
	Dec. 31, 2013		Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012		Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Segment Reporting [Abstract]
Oil and natural gas											$ 649,718,000		$ 567,944,000		$ 514,614,000
Contract drilling											479,091,000		579,368,000		536,872,000
Elimination of inter-segment revenue											(64,313,000)		(49,649,000)		(52,221,000)
Contract drilling net of inter-segment revenue											414,778,000		529,719,000		484,651,000
Gas gathering and processing											378,397,000		290,773,000		284,248,000
Elimination of inter-segment revenue											(91,043,000)		(73,313,000)		(76,010,000)
Gas gathering and processing											287,354,000		217,460,000		208,238,000
Total revenues	359,121,000		333,776,000	340,421,000	318,532,000	331,582,000		321,790,000	327,785,000	333,966,000	1,351,850,000		1,315,123,000		1,207,503,000
Oil and natural gas											239,219,000		(77,221,000)	[1]	199,993,000
Contract drilling											96,304,000		159,188,000		135,085,000
Gas gathering and processing											10,757,000		5,780,000	[2]	17,278,000
Total operating income											346,280,000	[3]	87,747,000	[3]	352,356,000	[3]
General and administrative expense											(38,323,000)		(33,086,000)		(30,055,000)
Gain (Loss) on Disposition of Assets											17,076,000		253,000		(595,000)
Interest expense, net											(15,015,000)		(14,137,000)		(4,167,000)
Gain (loss) on derivatives not designated as hedges and hedge ineffectiveness, net											(8,374,000)		(1,243,000)		1,702,000
Other Income (loss), net											(175,000)		(132,000)		(239,000)
Income before income taxes											301,469,000		39,402,000		319,002,000
Oil and natural gas	2,441,792,000					2,214,029,000					2,441,792,000		2,214,029,000		1,820,492,000
Contract drilling	1,042,661,000					1,079,736,000					1,042,661,000		1,079,736,000		1,118,666,000
Gas gathering and processing	473,717,000					413,708,000					473,717,000		413,708,000		247,763,000
Total identifiable assets	3,958,170,000	[4]				3,707,473,000	[4]				3,958,170,000	[4]	3,707,473,000	[4]	3,186,921,000	[4]
Corporate assets	64,220,000					53,647,000					64,220,000		53,647,000		69,799,000
Total assets	4,022,390,000					3,761,120,000					4,022,390,000		3,761,120,000		3,256,720,000
Oil and natural gas											531,233,000	[5]	1,145,337,000	[5]	588,158,000	[5]
Contract drilling											64,325,000		77,520,000		162,208,000
Gas gathering and processing											96,085,000		183,162,000		79,355,000
Other											4,483,000	[5]	11,083,000	[5]	2,688,000	[5]
Total capital expenditures											696,126,000		1,417,102,000		832,409,000
Oil and gas depreciation, depletion, and amortization											226,498,000		211,347,000		183,350,000
Impairment of Oil and Natural Gas Properties											0		283,606,000	[1]	0
Contract drilling											71,194,000		81,007,000		79,667,000
Gas gathering and processing											33,191,000		24,388,000	[2]	16,101,000
Other											3,024,000		2,279,000		1,333,000
Total depreciation, depletion, amortization and impairment											333,907,000		602,627,000		280,451,000
Non-cash write down of our oil and natural gas properties						167,700,000			115,900,000
Non-cash write down of our oil and natural gas properties net of tax						104,400,000			72,100,000
Impairment of long-lived assets held-for-use						1,200,000					0		1,200,000		0
Reclassified salt water disposal expenditures													$ 16,988,000		$ 8,103,000

[1] In June 2012 and December 2012, due to low 12-month average commodity prices, we incurred non-cash ceiling test write downs of our oil and natural gas properties of $115.9 million pre-tax ($72.1 million net of tax) and $167.7 million pre-tax ($104.4 million net of tax), respectively.

[2] Depreciation, depletion, amortization, and impairment for gas gathering and processing includes a $1.2 million write down of our Erick system.

[3] Operating income is total operating revenues less operating expenses, depreciation, depletion, amortization, and impairment and does not include general corporate expenses, (gain) loss on disposition of assets, gain (loss) on non-designated hedges and hedge ineffectiveness, interest expense, other income (loss), or income taxes.

[4] Identifiable assets are those used in Unit’s operations in each industry segment. Corporate assets are principally cash and cash equivalents, short-term investments, corporate leasehold improvements, furniture and equipment.

[5] Reclassified salt water disposal capital expenditures out of other and into oil and natural gas of $16,988 and $8,103 for 2012 and 2011, respectively.

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Long-Term Debt And Other Long-Term Liabilities (Narrative) (Details) (USD $)	0 Months Ended		12 Months Ended
	Jul. 24, 2012	May 18, 2012	Dec. 31, 2013	Dec. 31, 2012	Nov. 13, 2012	Sep. 05, 2012	May 18, 2011
Debt Instrument [Line Items]
Credit Facility Maximum Credit Amount			$ 900,000,000
Commitment fee under credit facility standard			1.00%
Origination, agency and syndication fees						1,500,000
Debt Instrument, Variable Interest Rate, Payable Assessment Period			90 days
LIBOR interest rate plus one percent			LIBOR plus 1.00%
Credit agreement with an average interest rates of 2.9% at December 31, 2012			0	71,100,000
Current ratio of credit facility			1 to 1
Leverage ratio of long-term debt			4 to 1
Aggregate principal amount					650,000,000		250,000,000
Interest percentage of senior subordinated notes			6.625%		6.625%		6.625%
Debt Instrument, Maturity Date	May 15, 2021	May 15, 2021	May 15, 2021
Proceeds from sale of notes		244,000,000
Deducting fees for debt issuance	8,700,000	6,000,000
Repayment of outstanding borrowings under unsecured credit facility		220,300,000
Debt Instrument, Issued at Discount, Percent of Par	98.75%
Percentage of maximum, aggregate principal equity amount			35.00%
Proceed from equity offerings redemption price percentage			106.625%
Minimum redemption percentage of debt outstanding			65.00%
Equal redemption price percentage of principal amount of debt			100.00%
Senior notes repurchase price in percentage			101.00%
Current Year			12,100,000
Year Two			2,800,000
Year Three			40,400,000
Year Four			4,200,000
Year Five			3,500,000
Minimum [Member]
Debt Instrument [Line Items]
Commitment fee percentage under credit facility			0.375%
LIBOR plus interest rate			1.75%
Maximum [Member]
Debt Instrument [Line Items]
Commitment fee percentage under credit facility			0.50%
LIBOR plus interest rate			2.50%
Payments of dividends exceeding percentage			30.00%
Senior Unsecured Credit Facility [Member]
Debt Instrument [Line Items]
Credit facility maturity date			September 13, 2016
Senior Notes, 6.625% Due 2021 [Member]
Debt Instrument [Line Items]
Aggregate principal amount	400,000,000
Line Of Credit Facility Commitment Amount [Member]
Debt Instrument [Line Items]
Credit facility current credit amount			500,000,000
Line Of Credit Facility Lender Determined Amount [Member]
Debt Instrument [Line Items]
Credit facility current credit amount			$ 800,000,000

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Derivatives (Schedule Of Subsequent Non-designated Hedges) (Details) (Not Designated as Hedging Instrument [Member], Subsequent to December 31, 2013 [Member], Mar'14 [Member], Natural Gas [Member], Basis Swap [Member])	12 Months Ended
	Dec. 31, 2013 MMBTU Unit
NGPL-TXOK [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Hedged Volume (MMBtu/day)	30,000
Weighted Average Fixed Price for Swaps	(0.095)
NGPL-Midcon [Member] [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Hedged Volume (MMBtu/day)	60,000
Weighted Average Fixed Price for Swaps	(0.027)
Start [Member] | NGPL-TXOK [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Commodity Derivatives Term	Mar'14
Start [Member] | NGPL-Midcon [Member] [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Commodity Derivatives Term	Mar'14
End [Member] | NGPL-TXOK [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Commodity Derivatives Term	Mar'14
End [Member] | NGPL-Midcon [Member] [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Commodity Derivatives Term	Mar'14

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Accumulated Other Comprehensive Income (Changes in accumulated other comprehensive income) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Beginning of Period:	$ 7,587	$ 19,026	$ (6,851)
Other comprehensive income before reclassification	(7,349)	18,635	29,384
Amounts reclassified from accumulated other comprehensive income	(238)	(30,074)	(3,507)
New current-period other comprehensive income	(7,587)	(11,439)	25,877
Ending of Period:	$ 0	$ 7,587	$ 19,026

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Derivatives (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012
Derivative [Line Items]
Accumulated OCI gain net of tax	$ 0	[1]	$ 7,587	[1]

[1] Net of taxes.

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Accumulated Other Comprehensive Income (Schedule of accumulated other comprehensive income (loss)) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Amounts reclassified from accumulated other comprehensive income	$ 603		$ 51,853		$ 2,965
Commodity Derivatives [Member]
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, before Tax	413		49,237		5,714
Tax expense	(175)		(19,163)		(2,207)
Total reclassification for the period	238		30,074		3,507
Oil and natural gas revenue [Member] | Commodity Derivatives [Member]
Amounts reclassified from accumulated other comprehensive income	603	[1]	51,853	[1]	2,965	[1]
Gain (loss) on derivatives not designated as hedges and hedge ineffectiveness [Member] | Commodity Derivatives [Member]
Derivative Instruments, Gain Recognized in Income	$ (190)	[2]	$ (2,616)	[2]	$ 2,749	[2]

[1] Effective portion of gain (loss).

[2] Ineffective portion of gain (loss).

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Derivatives (Fair Value Of Derivative Instruments And Locations In Balance Sheets) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Derivatives, Fair Value [Line Items]
Current derivative assets	$ 515	$ 16,552
Total derivatives assets	515	16,552
Current portion of derivative liabilities	5,561	1,948
Non-current derivative liabilities	0	562
Total derivative liabilities	5,561	2,510
Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Current derivative assets	0	13,674
Non-current derivative assets	0	0
Total derivatives assets	0	13,674
Current portion of derivative liabilities	0	1,005
Non-current derivative liabilities	0	0
Total derivative liabilities	0	1,005
Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Current derivative assets	515	2,878
Non-current derivative assets	0	0
Total derivatives assets	515	2,878
Current portion of derivative liabilities	5,561	943
Non-current derivative liabilities	0	562
Total derivative liabilities	$ 5,561	$ 1,505

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Stock-Based Compensation Stock-Based Compensation (Activity Pertaining to Stock Options) (Details) (Stock Options [Member], USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Beginning Balance	118,030	138,980	184,765
Weighted average grant date price, beginning balance	$ 33.03	$ 31.39	$ 31.11
Number of Shares, Granted	0	0	0
Weighted average grant date price, granted	$ 0.00	$ 0.00	$ 0.00
Number of Shares, Exercised	(48,110)	(18,850)	(42,285)
Weighted Average Grant Date Price, Exercised	$ 26.09	$ 20.38	$ 28.29
Number of Shares, Forfeited	(1,000)	(2,100)	(3,500)
Weighted average grant date price, forfeited	$ 37.83	$ 37.83	$ 53.90
Number of Shares, Ending Balance	68,920	118,030	138,980
Weighted average grant date price, ending balance	$ 37.81	$ 33.03	$ 31.39

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Commitments And Contingencies

12 Months Ended

Dec. 31, 2013

Commitments and Contingencies Disclosure [Abstract]

Commitments And Contingencies

We lease office space or yards in Edmond, Oklahoma City, and Tulsa, Oklahoma; Houston, Texas; Englewood, Colorado; Pinedale, Wyoming; and Pittsburgh, Pennsylvania under the terms of operating leases expiring through September, 2017. Additionally, we have several compressor rentals, equipment leases, and lease space on short-term commitments to stack excess drilling rig equipment and production inventory.Future minimum rental payments under the terms of the leases are approximately $8.4 million, $3.4 million, $0.6 million, and $0.1 million in 2014 through 2017, respectively. Total rent expense incurred was $16.9 million, $14.0 million, and $8.5 million in 2013, 2012, and 2011, respectively.

The Unit 1984 Oil and Gas Limited Partnership and the 1986 Energy Income Limited Partnership agreements along with the employee oil and gas limited partnerships require, on the election of a limited partner, that we repurchase the limited partner’s interest at amounts to be determined by appraisal in the future. These repurchases in any one year are limited to 20% of the units outstanding. We made repurchases of $16,000 in 2013, 56,000 in 2012, and $22,000 in 2011.

We manage our exposure to environmental liabilities on properties to be acquired by identifying existing problems and assessing the potential liability. We also conduct periodic reviews, on a company-wide basis, to identify changes in our environmental risk profile. These reviews evaluate whether there is a probable liability, its amount, and the likelihood that the liability will be incurred. The amount of any potential liability is determined by considering, among other matters, incremental direct costs of any likely remediation and the proportionate cost of employees who are expected to devote a significant amount of time directly to any possible remediation effort. As it relates to evaluations of purchased properties, depending on the extent of an identified environmental problem, we may exclude a property from the acquisition, require the seller to remediate the property to our satisfaction, or agree to assume liability for the remediation of the property.

We have not historically experienced any environmental liability while being a contract driller since the greatest portion of risk is borne by the operator. Any liabilities we have incurred have been small and have been resolved while the drilling rig is on the location and the cost has been included in the direct cost of drilling the well.

For the next twelve months, we have committed to purchase approximately $11.4 million of new drilling rig components, drill pipe, drill collars and related equipment and $0.6 million remaining towards a gas treating plant.

We are subject to various legal proceedings arising in the ordinary course of our various businesses none of which, in our opinion, will result in judgments which would have a material adverse effect on our financial position, operating results or cash flows.

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Acquisitions and Divestitures - Pro Forma (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Pro forma:
Revenues	$ 1,376,393	$ 1,336,227
Net income	$ 83,940	$ 229,272
Net income per common share:
Basic	$ 1.75	$ 4.81
Diluted	$ 1.74	$ 4.78

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Accumulated Other Comprehensive Income (Tables)

12 Months Ended

Dec. 31, 2013

Equity [Abstract]

Changes in accumulated other comprehensive income

Changes in accumulated other comprehensive income (loss) by component, net of tax, are as follows:

	Net Gains (Losses) on Cash Flow Hedges
	2013			2012			2011
	(In thousands)
Balance at January 1:	$	7,587		$	19,026		$	(6,851	)
Other comprehensive income before reclassification	(7,349		)	18,635			29,384
Amounts reclassified from accumulated other comprehensive income	(238		)	(30,074		)	(3,507		)
New current-period other comprehensive income	(7,587		)	(11,439		)	25,877
Balance at December 31:	$	—		$	7,587		$	19,026

Schedule of accumulated other comprehensive income

Amounts reclassified from accumulated other comprehensive income (loss) into the consolidated statements of income for the year ended December 31:

	2013			2012			2011			Affected Line Item in the Statement Where Net Income is Presented
	(In thousands)
Net gains (loss) on cash flow hedges
Commodity derivatives	$	603		$	51,853		$	2,965		Oil and natural gas revenues
Commodity derivatives	(190		)	(2,616		)	2,749			Gain (loss) on derivatives not designated as hedges and hedge ineffectiveness, net
	413			49,237			5,714			Total before tax
	(175		)	(19,163		)	(2,207		)	Tax expense
Total reclassification for the period	$	238		$	30,074		$	3,507		Net of tax

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Derivatives Derivatives (Schedule of Non-designated Hedges Outstanding) (Details) (Not Designated as Hedging Instrument [Member])	12 Months Ended
	Dec. 31, 2013 MMBTU Unit
Natural Gas [Member] | Swap [Member] | If Nymex [Member] | Jan'14 - Dec'14 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Hedged Volume (MMBtu/day)	80,000
Weighted Average Fixed Price for Swaps	4.24
Natural Gas [Member] | Collar [Member] | If Nymex [Member] | Jan'14 - Dec'14 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Hedged Volume (MMBtu/day)	10,000
Crude Oil [Member] | Swap [Member] | Wti Nymex [Member] | Jan'14 - Jun'14 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Hedged Volume (Bbl/day)	500
Weighted Average Fixed Price for Swaps	100.03
Crude Oil [Member] | Swap [Member] | Wti Nymex [Member] | Jan'14 - Dec'14 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Hedged Volume (Bbl/day)	3,000
Weighted Average Fixed Price for Swaps	91.77
Crude Oil [Member] | Collar [Member] | Wti Nymex [Member] | Jan'14 - Dec'14 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Hedged Volume (Bbl/day)	4,000
Minimum [Member] | Natural Gas [Member] | Swap [Member] | If Nymex [Member] | Jan'14 - Dec'14 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Commodity Derivatives Description Terms	Jan'14
Minimum [Member] | Natural Gas [Member] | Collar [Member] | If Nymex [Member] | Jan'14 - Dec'14 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Commodity Derivatives Description Terms	Jan'14
Weighted Average Fixed Price for Swaps	3.75
Minimum [Member] | Crude Oil [Member] | Swap [Member] | Wti Nymex [Member] | Jan'14 - Jun'14 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Commodity Derivatives Description Terms	Jan'14
Minimum [Member] | Crude Oil [Member] | Swap [Member] | Wti Nymex [Member] | Jan'14 - Dec'14 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Commodity Derivatives Description Terms	Jan'14
Minimum [Member] | Crude Oil [Member] | Collar [Member] | Wti Nymex [Member] | Jan'14 - Dec'14 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Commodity Derivatives Description Terms	Jan'14
Weighted Average Fixed Price for Swaps	90.00
Maximum [Member] | Natural Gas [Member] | Swap [Member] | If Nymex [Member] | Jan'14 - Dec'14 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Commodity Derivatives Description Terms	Dec'14
Maximum [Member] | Natural Gas [Member] | Collar [Member] | If Nymex [Member] | Jan'14 - Dec'14 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Commodity Derivatives Description Terms	Dec'14
Weighted Average Fixed Price for Swaps	4.37
Maximum [Member] | Crude Oil [Member] | Swap [Member] | Wti Nymex [Member] | Jan'14 - Jun'14 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Commodity Derivatives Description Terms	Jun'14
Maximum [Member] | Crude Oil [Member] | Swap [Member] | Wti Nymex [Member] | Jan'14 - Dec'14 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Commodity Derivatives Description Terms	Dec'14
Maximum [Member] | Crude Oil [Member] | Collar [Member] | Wti Nymex [Member] | Jan'14 - Dec'14 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Commodity Derivatives Description Terms	Dec'14
Weighted Average Fixed Price for Swaps	96.08

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Supplemental Oil And Gas Disclosures Supplemental Oil and Gas Disclosures (Narrative) (Details)	12 Months Ended
	Dec. 31, 2013
Oil [Member] (bbls)
Average Sales Prices	96.94
Natural Gas Liquids [Member] (bbls)
Average Sales Prices	41.03
Natural Gas [Member] (Mcf)
Average Sales Prices	3.67

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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2013

Income Tax Disclosure [Abstract]

Reconciliation Of Income Tax Expense

A reconciliation of income tax expense, computed by applying the federal statutory rate to pre-tax income to our effective income tax expense is as follows:

	2013		2012		2011
	(In thousands)
Income tax expense computed by applying the statutory rate	$	105,514	$	13,791	$	111,651
State income tax, net of federal benefit	8,290		1,084		8,941
Statutory depletion and other	2,919		1,351		2,543
Income tax expense	$	116,723	$	16,226	$	123,135

Schedule Of Total Provision For Income Taxes

For the periods indicated, the total provision for income taxes consisted of the following:

	2013		2012			2011
	(In thousands)
Current taxes:
Federal	$	15,845	$	2,084		$	(3,159	)
State	146		(1,388		)	743
	15,991		696			(2,416		)
Deferred taxes:
Federal	87,839		13,768			109,363
State	12,893		1,762			16,188
	100,732		15,530			125,551
Total provision	$	116,723	$	16,226		$	123,135

Schedule Of Deferred Tax Assets And Liabilities

Deferred tax assets and liabilities are comprised of the following at December 31:

	2013			2012
	(In thousands)
Deferred tax assets:
Allowance for losses and nondeductible accruals	$	77,285		$	74,890
Net operating loss carryforward	61,055			56,020
Alternative minimum tax credit carryforward	17,258			1,972
	155,598			132,882
Deferred tax liability:
Depreciation, depletion, amortization and impairment	(943,411		)	(819,893		)
Net deferred tax liability	(787,813		)	(687,011		)
Current deferred tax asset	13,585			8,765
Non-current—deferred tax liability	$	(801,398	)	$	(695,776	)

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Earnings Per Share (Schedule Of Earnings Per Share) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended												12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012		Sep. 30, 2012		Jun. 30, 2012		Mar. 31, 2012		Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Earnings Per Share [Abstract]
Income of basic earnings per common share	$ 51,301	$ 34,232	$ 59,007	$ 40,206	$ (56,547)		$ 46,586		$ (19,302)		$ 52,439		$ 184,746	$ 23,176	$ 195,867
Income of effect of dilutive stock options, restricted stock, and SARs													0	0	0
Income of diluted earnings per common share													$ 184,746	$ 23,176	$ 195,867
Weighted shares of basic earnings per common share													48,218	47,909	47,658
Weighted shares of effect of dilutive stock options, restricted stock, and SARs													354	245	293
Weighted shares of diluted earnings per common share													48,572	48,154	47,951
Per share amount of basic earnings per common share	$ 1.06	$ 0.71	$ 1.22	$ 0.84	$ (1.18)	[1]	$ 0.97	[1]	$ (0.40)	[1]	$ 1.10	[1]	$ 3.83	$ 0.48	$ 4.11
Per share amount of effect of dilutive stock options, restricted stock, and SARs													$ (0.03)	$ 0.00	$ (0.03)
Per share amount of diluted earnings per common share	$ 1.05	$ 0.70	$ 1.22	$ 0.83	$ (1.18)		$ 0.97		$ (0.40)		$ 1.09		$ 3.80	$ 0.48	$ 4.08

[1] Due to the effect of rounding the basic earnings per share for the year’s four quarters does not equal annual earnings per share.

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Stock-Based Compensation (Schedule Of Restricted Stock Awards Stock Options And SAR) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Recognized stock compensation expense	$ 16.1	$ 11.4	$ 10.0
Capitalized stock compensation cost for our oil and natural gas properties	3.5	2.7	2.5
Tax benefit on stock based compensation	$ 6.2	$ 4.5	$ 3.9

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Income Taxes (Schedule Of Deferred Tax Assets And Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Allowance for losses and nondeductible accruals	$ 77,285	$ 74,890
Net operating loss carryforward	61,055	56,020
Alternative minimum tax credit carryforward	17,258	1,972
Deferred tax assets, total	155,598	132,882
Depreciation, depletion, amortization and impairment	(943,411)	(819,893)
Net deferred tax liability	(787,813)	(687,011)
Current deferred tax asset	13,585	8,765
Non-current-deferred tax liability	$ (801,398)	$ (695,776)

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Summary Of Significant Accounting Policies (Schedule Of Fair Values Of The Net Assets (Liabilities)) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013
Derivative Counterparty [Line Items]
Total assets (liabilities)	$ (5,000)
Canadian Imperial Bank of Commerce
Derivative Counterparty [Line Items]
Total assets (liabilities)	500
Scotiabank
Derivative Counterparty [Line Items]
Total assets (liabilities)	(300)
Bank of Montreal
Derivative Counterparty [Line Items]
Total assets (liabilities)	$ (5,200)

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Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
OPERATING ACTIVITIES:
Net income	$ 184,746	$ 23,176	$ 195,867
Adjustments to reconcile net income (loss) to net cash provided (used) by operating activities:
Depreciation, depletion, amortization, and impairment	333,907	319,021	280,451
Impairment of oil and natural gas properties (Note 2)	0	283,606	0
(Gain) loss on derivatives	5,449	53,096	(159)
Derivatives settled	1,161	(51,853)	(2,254)
(Gain) loss on disposition of assets	(17,076)	(253)	595
Deferred tax expense	100,732	15,530	125,551
Employee stock compensation plans	21,317	16,956	14,303
Bad debt expense	0	90	260
ARO liability accretion	5,450	4,615	3,838
Other, net	2,250	781	294
Changes in operating assets and liabilities increasing (decreasing) cash:
Accounts receivable	2,967	13,994	(38,731)
Materials and supplies	(2,435)	(361)	(1,886)
Prepaid expenses and other	1,813	(3,466)	22,672
Accounts payable	15,715	10,187	(1,064)
Accrued liabilities	17,198	6,911	9,245
Contract advances	1,137	(1,119)	(527)
Net cash provided by operating activities	674,331	690,911	608,455
INVESTING ACTIVITIES:
Capital expeditures	(703,984)	(762,381)	(728,551)
Producing property and other acquisitions	0	(598,485)	(50,013)
Proceeds from disposition of property and equipment	120,910	281,824	10,328
Other	3,894	0	0
Net cash used in investing activities	(579,180)	(1,079,042)	(768,236)
FINANCING ACTIVITIES:
Borrowings under line of credit	222,500	735,300	441,500
Payments under line of credit	(293,600)	(714,200)	(554,500)
Proceeds from issuance of senior subordinated notes, net of debt issuance costs and discount	0	386,274	243,950
Proceeds from exercise of stock options	574	215	679
Tax benefit from stock options	8	121	1,174
Increase (decrease) in book overdrafts (Note 2)	(7,014)	(19,440)	26,454
Net cash provided by (used in) financing activities	(77,532)	388,270	159,257
Net increase (decrease) in cash and cash equivalents	17,619	139	(524)
Cash and cash equivalents, beginning of year	974	835	1,359
Cash and cash equivalents, end of year	18,593	974	835
Supplemental disclosure of cash flow information:
Interest paid (net of capitalization)	12,485	14,880	3,470
Income taxes	9,100	5,116	655
Changes in accounts payable and accrued liabilites related to purchases of property, plant, and equipment	(6,550)	(4,753)	(28,036)
Non-cash additions to oil and natural gas properties related to asset retirement obligations	$ (17,952)	$ 45,097	$ 23,345

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Income Taxes (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	$ 146.5
Start [Member]
Operating Loss Carryforwards [Line Items]
Operating loss expiration period	Dec. 31, 2015
End [Member]
Operating Loss Carryforwards [Line Items]
Operating loss expiration period	Dec. 31, 2033

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Industry Segment Information (Tables)

12 Months Ended

Dec. 31, 2013

Segment Reporting [Abstract]

Revenue From Different Segments

The following table provides certain information about the operations of each of our segments:

	2013			2012				2011
	(In thousands)
Revenues:
Oil and natural gas	$	649,718		$	567,944			$	514,614
Contract drilling	479,091			579,368				536,872
Elimination of inter-segment revenue	(64,313		)	(49,649		)		(52,221		)
Contract drilling net of inter-segment revenue	414,778			529,719				484,651
Gas gathering and processing	378,397			290,773				284,248
Elimination of inter-segment revenue	(91,043		)	(73,313		)		(76,010		)
Gas gathering and processing net of inter-segment revenue	287,354			217,460				208,238
Total revenues	$	1,351,850		$	1,315,123			$	1,207,503
Operating income:
Oil and natural gas	$	239,219		$	(77,221	)	(3)	$	199,993
Contract drilling	96,304			159,188				135,085
Gas gathering and processing	10,757			5,780			(4)	17,278
Total operating income (1)	346,280			87,747				352,356
General and administrative expense	(38,323		)	(33,086		)		(30,055		)
Gain (loss) on disposition of assets	17,076			253				(595		)
Interest expense, net	(15,015		)	(14,137		)		(4,167		)
Gain (loss) on derivatives not designated as hedges and hedge ineffectiveness, net	(8,374		)	(1,243		)		1,702
Other income (expense), net	(175		)	(132		)		(239		)
Income before income taxes	$	301,469		$	39,402			$	319,002
Identifiable assets:
Oil and natural gas	$	2,441,792		$	2,214,029			$	1,820,492
Contract drilling	1,042,661			1,079,736				1,118,666
Gas gathering and processing	473,717			413,708				247,763
Total identifiable assets (2)	3,958,170			3,707,473				3,186,921
Corporate assets	64,220			53,647				69,799
Total assets	$	4,022,390		$	3,761,120			$	3,256,720
Capital expenditures:
Oil and natural gas (5)	$	531,233		$	1,145,337			$	588,158
Contract drilling	64,325			77,520				162,208
Gas gathering and processing	96,085			183,162				79,355
Other (5)	4,483			11,083				2,688
Total capital expenditures	$	696,126		$	1,417,102			$	832,409
Depreciation, depletion, amortization, and impairment:
Oil and natural gas
Depreciation, depletion and amortization	226,498			211,347				183,350
Impairment of oil and natural gas properties	—			283,606			(3)	—
Contract drilling	71,194			81,007				79,667
Gas gathering and processing	33,191			24,388			(4)	16,101
Other	3,024			2,279				1,333
Total depreciation, depletion, amortization, and impairment	$	333,907		$	602,627			$	280,451

_________________________ 

(1) Operating income is total operating revenues less operating expenses, depreciation, depletion, amortization, and impairment and does not include general corporate expenses, (gain) loss on disposition of assets, gain (loss) on non-designated hedges and hedge ineffectiveness, interest expense, other income (loss), or income taxes.

(2) Identifiable assets are those used in Unit’s operations in each industry segment. Corporate assets are principally cash and cash equivalents, short-term investments, corporate leasehold improvements, furniture and equipment.

(3) In June 2012 and December 2012, due to low 12-month average commodity prices, we incurred non-cash ceiling test write downs of our oil and natural gas properties of $115.9 million pre-tax ($72.1 million net of tax) and $167.7 million pre-tax ($104.4 million net of tax), respectively.

(4) Depreciation, depletion, amortization, and impairment for gas gathering and processing includes a $1.2 million write down of our Erick system.

(5) Reclassified salt water disposal capital expenditures out of other and into oil and natural gas of $16,988 and $8,103 for 2012 and 2011, respectively.

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Schedule II - Valuation And Qualifying Accounts And Reserves

12 Months Ended

Dec. 31, 2013

Valuation and Qualifying Accounts [Abstract]

Valuation And Qualifying Accounts And Reserves

Allowance for Doubtful Accounts:

Description	Balance  at Beginning of Period		Additions Charged  to Costs & Expenses		Deductions & Net Write-Offs			Balance at End of Period
	(In thousands)
Year ended December 31, 2013	$	5,343	$	—	$	(1	)	$	5,342
Year ended December 31, 2012	$	5,343	$	90	$	(90	)	$	5,343
Year ended December 31, 2011	$	5,083	$	260	$	—		$	5,343

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Supplemental Oil And Gas Disclosures

12 Months Ended

Dec. 31, 2013

Supplemental Oil and Gas Disclosures [Abstract]

Supplemental Oil And Gas Disclosures

Our oil and gas operations are substantially located in the United States. We do have operations in Canada that are insignificant. The capitalized costs at year-end and costs incurred during the year were as follows:

	2013			2012			2011
	(In thousands)
Capitalized costs:
Proved properties	$	4,235,712		$	3,822,381		$	3,302,032
Unproved properties	545,588			521,659			185,632
	4,781,300			4,344,040			3,487,664
Accumulated depreciation, depletion, amortization, and impairment	(2,439,458		)	(2,216,787		)	(1,724,312		)
Net capitalized costs	$	2,341,842		$	2,127,253		$	1,763,352
Cost incurred:
Unproved properties acquired	$	76,304		$	420,467		$	70,999
Proved properties acquired	—			225,669			50,013
Exploration	33,373			46,467			43,836
Development	424,314			390,649			391,862
Asset retirement obligation	(17,951		)	45,097			23,345
Total costs incurred	$	516,040		$	1,128,349		$	580,055

The following table shows a summary of the oil and natural gas property costs not being amortized at December 31, 2013, by the year in which such costs were incurred:

	2013		2012		2011		2010 and Prior		Total
	(In thousands)
Unproved properties acquired and wells in progress	$	92,929	$	412,623	$	32,492	$	7,544	$	545,588

Unproved properties not subject to amortization relates to properties which are not individually significant and consist primarily of lease acquisition costs. The evaluation process associated with these properties has not been completed and therefore, the company is unable to estimate when these costs will be included in the amortization calculation.

The results of operations for producing activities are as follows:

	2013			2012			2011
	(In thousands)
Revenues	$	633,792		$	557,003		$	505,450
Production costs	(162,822		)	(131,389		)	(115,400		)
Depreciation, depletion, amortization, and impairment	(222,672		)	(492,475		)	(181,960		)
	248,298			(66,861		)	208,090
Income tax (expense) benefit	(96,091		)	27,533			(80,323		)
Results of operations for producing activities (excluding corporate overhead and financing costs)	$	152,207		$	(39,328	)	$	127,767

Estimated quantities of proved developed oil, NGLs, and natural gas reserves and changes in net quantities of proved developed and undeveloped oil, NGLs, and natural gas reserves were as follows:

	Oil Bbls		NGLs Bbls		Natural Gas Mcf
	(In thousands)
2013
Proved Developed and Undeveloped Reserves:
Beginning of Year	21,998		35,166		555,647
Revision of Previous Estimates	(2,113	)	836		2,421
Extensions and Discoveries	4,678		7,273		68,611
Infill Reserves in Existing Proved Fields	2,299		1,945		21,573
Purchases of Minerals in Place	—		—		11
Production	(3,360	)	(3,914	)	(56,757	)
Sales	(1,737	)	(101	)	(9,722	)
End of Year	21,765		41,205		581,784
Proved Developed Reserves:
Beginning of Year	16,441		25,657		452,844
End of Year	15,594		30,437		464,234
Proved Undeveloped Reserves:
Beginning of Year	5,557		9,509		102,803
End of Year	6,171		10,768		117,550
2012
Proved Developed and Undeveloped Reserves:
Beginning of Year	20,255		22,087		442,135
Revision of Previous Estimates (1)	(1,747	)	(2,682	)	(55,110	)
Extensions and Discoveries	5,014		4,819		54,761
Infill Reserves in Existing Proved Fields	4,196		3,018		25,057
Purchases of Minerals in Place	2,830		11,098		141,494
Production	(3,279	)	(2,796	)	(48,930	)
Sales	(5,271	)	(378	)	(3,760	)
End of Year	21,998		35,166		555,647
Proved Developed Reserves:
Beginning of Year	15,618		16,649		372,311
End of Year	16,441		25,657		452,844
Proved Undeveloped Reserves:
Beginning of Year	4,637		5,438		69,824
End of Year	5,557		9,509		102,803
2011
Proved Developed and Undeveloped Reserves:
Beginning of Year	17,494		16,117		420,486
Revision of Previous Estimates (1)	374		2,112		(30,510	)
Extensions and Discoveries	3,477		3,924		39,836
Infill Reserves in Existing Proved Fields	1,229		1,780		15,592
Purchases of Minerals in Place	192		393		40,835
Production	(2,511	)	(2,239	)	(44,104	)
Sales	—		—		—
End of Year	20,255		22,087		442,135
Proved Developed Reserves:
Beginning of Year	12,773		12,088		346,928
End of Year	15,618		16,649		372,311
Proved Undeveloped Reserves:
Beginning of Year	4,721		4,029		73,558
End of Year	4,637		5,438		69,824

_________________________

(1) Natural gas revisions of previous estimates decreased primarily due to a decline in natural gas prices.

Estimates of oil, NGLs, and natural gas reserves require extensive judgments of reservoir engineering data. Assigning monetary values to such estimates does not reduce the subjectivity and changing nature of such reserve estimates. Indeed the uncertainties inherent in the disclosure are compounded by applying additional estimates of the rates and timing of production and the costs that will be incurred in developing and producing the reserves. The information set forth in this report is, therefore, subjective and, since judgments are involved, may not be comparable to estimates submitted by other oil and natural gas producers. In addition, since prices and costs do not remain static, and no price or cost escalations or de-escalations have been considered, the results are not necessarily indicative of the estimated fair market value of estimated proved reserves, nor of estimated future cash flows.

The standardized measure of discounted future net cash flows (SMOG) was calculated using 12-month average prices and year-end costs and statutory tax rates, adjusted for permanent differences that relate to existing proved oil, NGLs, and natural gas reserves. SMOG as of December 31 is as follows:

	2013			2012			2011
	(In thousands)
Future cash flows	$	5,573,119		$	4,522,351		$	4,583,629
Future production costs	(1,734,985		)	(1,405,773		)	(1,277,856		)
Future development costs	(571,170		)	(431,673		)	(340,992		)
Future income tax expenses	(1,044,608		)	(762,519		)	(952,736		)
Future net cash flows	2,222,356			1,922,386			2,012,045
10% annual discount for estimated timing of cash flows	(996,380		)	(842,430		)	(924,136		)
Standardized measure of discounted future net cash flows relating to proved oil, NGLs, and natural gas reserves	$	1,225,976		$	1,079,956		$	1,087,909

The principal sources of changes in the standardized measure of discounted future net cash flows were as follows:

	2013			2012			2011
	(In thousands)
Sales and transfers of oil and natural gas produced, net of production costs	$	(470,970	)	$	(425,626	)	$	(389,339	)
Net changes in prices and production costs	188,826			(321,099		)	115,852
Revisions in quantity estimates and changes in production timing	(10,650		)	(148,648		)	(38,336		)
Extensions, discoveries and improved recovery, less related costs	426,377			432,058			401,134
Changes in estimated future development costs	26,629			51,587			37,742
Previously estimated cost incurred during the period	96,457			104,377			45,327
Purchases of minerals in place	9			283,774			58,567
Sales of minerals in place	(43,435		)	(112,359		)	(29		)
Accretion of discount	147,579			157,842			128,492
Net change in income taxes	(170,091		)	94,678			(60,675		)
Other—net	(44,711		)	(124,537		)	(65,912		)
Net change	146,020			(7,953		)	232,823
Beginning of year	1,079,956			1,087,909			855,086
End of year	$	1,225,976		$	1,079,956		$	1,087,909

Certain information concerning the assumptions used in computing SMOG and their inherent limitations are discussed below. We believe this information is essential for a proper understanding and assessment of the data presented.

The assumptions used to compute SMOG do not necessarily reflect our expectations of actual revenues to be derived from those reserves nor their present worth. Assigning monetary values to the reserve quantity estimation process does not reduce the subjective and ever-changing nature of reserve estimates. Additional subjectivity occurs when determining present values because the rate of producing the reserves must be estimated. In addition to difficulty inherent in predicting the future, variations from the expected production rate could result from factors outside of our control, such as unintentional delays in development, environmental concerns or changes in prices or regulatory controls. Also, the reserve valuation assumes that all reserves will be disposed of by production. However, other factors such as the sale of reserves in place could affect the amount of cash eventually realized.

The December 31, 2013, future cash flows were computed by applying the unescalated 12-month average prices of $96.94 per barrel for oil, $41.03 per barrel for NGLs, and $3.67 per Mcf for natural gas, then adjusted for price differentials, relating to proved reserves and to the year-end quantities of those reserves. Future price changes are considered only to the extent provided by contractual arrangements in existence at year-end.

Future production and development costs are computed by estimating the expenditures to be incurred in developing and producing the proved oil, NGLs, and natural gas reserves at the end of the year, based on continuation of existing economic conditions.

Future income tax expenses are computed by applying the appropriate year-end statutory tax rates to the future pretax net cash flows relating to proved oil, NGLs, and natural gas reserves less the tax basis of our properties. The future income tax expenses also give effect to permanent differences and tax credits and allowances relating to our proved oil, NGLs, and natural gas reserves.

Care should be exercised in the use and interpretation of the above data. As production occurs over the next several years, the results shown may be significantly different as changes in production performance, petroleum prices and costs are likely to occur.

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Long-Term Debt And Other Long-Term Liabilities (Other Long-Term Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Long-term debt and other long-term liabilites [Abstract]
ARO liability	$ 133,657	$ 146,159	$ 96,446
Workers' compensation	20,041	18,517
Separation benefit plans	9,382	7,972
Gas balancing liability	3,775	3,838
Deferred compensation plan	3,589	2,779
Other liabilities	170,444	179,265
Less current portion	12,113	12,282
Total other long-term liabilities	$ 158,331	$ 166,983

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Selected Quarterly Financial Information (Tables)

12 Months Ended

Dec. 31, 2013

Selected Quarterly Financial Information [Abstract]

Schedule Of Quarterly Financial Information

Summarized unaudited quarterly financial information is as follows:

	Three Months Ended
	March 31		June 30			September 30		December 31
	(In thousands except per share amounts)
2013
Revenues	$	318,532	$	340,421		$	333,776	$	359,121
Gross profit	$	83,683	$	90,823		$	79,082	$	92,692		(1)
Net income	$	40,206	$	59,007		$	34,232	$	51,301
Net income per common share:
Basic	$	0.84	$	1.22		$	0.71	$	1.06
Diluted	$	0.83	$	1.22		$	0.70	$	1.05
2012
Revenues	$	333,966	$	327,785		$	321,790	$	331,582
Gross profit (loss)	$	95,912	$	(22,253	)	$	95,921	$	(81,833	)	(1)
Net income (loss)	$	52,439	$	(19,302	)	$	46,586	$	(56,547	)
Net income (loss) per common share:
Basic	$	1.10	$	(0.40	)	$	0.97	$	(1.18	)	(2)
Diluted	$	1.09	$	(0.40	)	$	0.97	$	(1.18	)

_________________________

(1) Gross profit excludes general and administrative expense, interest expense, (gain) loss on disposition of assets, gain (loss) on non-designated hedges and hedge ineffectiveness, income taxes, and other income (loss).

(2) Due to the effect of rounding the basic earnings per share for the year’s four quarters does not equal annual earnings per share.

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Summary Of Significant Accounting Policies (Policy)

12 Months Ended

Dec. 31, 2013

Accounting Policies [Abstract]

Principles Of Consolidation

The consolidated financial statements include the accounts of Unit Corporation and its subsidiaries. Our investment in limited partnerships is accounted for on the proportionate consolidation method, whereby our share of the partnerships’ assets, liabilities, revenues, and expenses are included in the appropriate classification in the accompanying consolidated financial statements.

Certain amounts in the accompanying consolidated financial statements for prior periods have been reclassified to conform to current year presentation. Certain financial statement captions were expanded or combined with no impact to consolidated net income or shareholders' equity.

Accounting Estimates

The preparation of financial statements in conformity with generally accepted accounting principles (GAAP) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Drilling Contracts

We recognize revenues and expenses generated from “daywork” drilling contracts as the services are performed, since we do not bear the risk of completion of the well. Under “footage” and “turnkey” contracts, we bear the risk of completion of the well; therefore, revenues and expenses are recognized when the well is substantially completed. Under this method, substantial completion is determined when the well bore reaches the negotiated depth as stated in the contract. The entire amount of a loss, if any, is recorded when the loss is determinable. The costs of uncompleted drilling contracts include expenses incurred to date on “footage” or “turnkey” contracts, which are still in process at the end of the period, and are included in other current assets. Typically, any one of these three types of contracts can be used for the drilling of one well which can take from 20 to 90 days. At December 31, 2013, all of our contracts were daywork contracts of which 23 were multi-well and had durations which ranged from six months to three years, 22 of which expire in 2014 and one expiring in 2015. These longer term contracts may contain a fixed rate for the duration of the contract or provide for the periodic renegotiation of the rate within a specific range from the existing rate.

Cash Equivalents And Book Overdrafts

We include as cash equivalents all investments with maturities at date of purchase of three months or less which are readily convertible into known amounts of cash. Book overdrafts are checks that have been issued before the end of the period, but not presented to our bank for payment before the end of the period. There were no book overdrafts at December 31, 2013. At December 31, 2012, book overdrafts were $7.0 million and included in accounts payable.

Accounts Receivable

Accounts receivable are carried on a gross basis, with no discounting, less an allowance for doubtful accounts. We estimate the allowance for doubtful accounts based on existing economic conditions, the financial condition of our customers, and the amount and age of past due accounts. Receivables are considered past due if full payment is not received by the contractual due date. Past due accounts are generally written off against the allowance for doubtful accounts only after all collection attempts have been unsuccessful.

Financial Instruments And Concentrations Of Credit Risk And Non-Performance Risk

Financial instruments, which potentially subject us to concentrations of credit risk, consist primarily of trade receivables with a variety of oil and natural gas companies. We do not generally require collateral related to receivables. Our credit risk is considered to be limited due to the large number of customers comprising our customer base. Below are the third-party customers that accounted for more than 10% of our segment’s revenues:

	2013		2012		2011
Oil and Natural Gas:
Valero Energy Corporation	25	%	26	%	18	%
Sunoco Partners Marketing	8	%	8	%	10	%
Drilling:
QEP Resources, Inc.	18	%	15	%	22	%
Kodiak Oil and Gas Corp.	10	%	10	%	6	%
Mid-Stream:
ONEOK, Inc.	50	%	54	%	54	%
Tenaska Resources, LLC	16	%	7	%	1	%
Gavilon, LLC	—	%	10	%	19	%

We had a concentration of cash of $52.1 million and $40.4 million at December 31, 2013 and 2012, respectively with one bank.

The use of derivative transactions also involves the risk that the counterparties will be unable to meet the financial terms of the transactions. We considered this non-performance risk with regard to our counterparties and our own non-performance risk in our derivative valuation at December 31, 2013 and determined there was no material risk at that time. At December 31, 2013, the fair values of the net assets (liabilities) we had with each of the counterparties with respect to all of our commodity derivative transactions are listed in the table below:

	December 31, 2013
	(In millions)
Canadian Imperial Bank of Commerce	$	0.5
Scotiabank	(0.3		)
Bank of Montreal	(5.2		)
Total assets (liabilities)	$	(5.0	)

Property And Equipment

Drilling equipment, natural gas gathering and processing equipment, transportation equipment, and other property and equipment are carried at cost. Renewals and improvements are capitalized while repairs and maintenance are expensed. Depreciation of drilling equipment is recorded using the units-of-production method based on estimated useful lives starting at 15 years , including a minimum provision of 20% of the active rate when the equipment is idle. We use the composite method of depreciation for drill pipe and collars and calculate the depreciation by footage actually drilled compared to total estimated remaining footage. Depreciation of other property and equipment is computed using the straight-line method over the estimated useful lives of the assets ranging from 3 to 15 years.

Realization of the carrying value of property and equipment is reviewed for possible impairment whenever events or changes in circumstances indicate that the carrying amount may not be recoverable. Assets are determined to be impaired if a forecast of undiscounted estimated future net operating cash flows directly related to the asset including disposal value if any, is less than the carrying amount of the asset. If any asset is determined to be impaired, the loss is measured as the amount by which the carrying amount of the asset exceeds its fair value. An estimate of fair value is based on the best information available, including prices for similar assets. Changes in such estimates could cause us to reduce the carrying value of property and equipment. In December 2012, our mid-stream segment had a $1.2 million write down of its Erick system. There was no volume from the wells connected to this system, the compressor and related surface equipment have been removed from this location and there is no future activity anticipated from this gathering system. No significant impairments were recorded in 2013 or 2011.

When property and equipment components are disposed of, the cost and the related accumulated depreciation are removed from the accounts and any resulting gain or loss is generally reflected in operations. For dispositions of drill pipe and drill collars, an average cost for the appropriate feet of drill pipe and drill collars is removed from the asset account and charged to accumulated depreciation and proceeds, if any, are credited to accumulated depreciation.

We record an asset and a liability equal to the present value of the expected future asset retirement obligation (ARO) associated with our oil and gas properties. The ARO asset is depreciated in a manner consistent with the depreciation of the underlying physical asset. We measure changes in the liability due to passage of time by accreting an interest charge. This amount is recognized as an increase in the carrying amount of the liability and as a corresponding accretion expense.

Capitalized Interest

 During 2013, 2012, and 2011, interest of approximately $33.7 million, $18.9 million, and $11.5 million, respectively, was capitalized based on the net book value associated with unproved properties not being amortized, the construction of additional drilling rigs, and the construction of gas gathering systems. Interest is being capitalized using a weighted average interest rate based on our outstanding borrowings.

Goodwill

Goodwill represents the excess of the cost of acquisitions over the fair value of the net assets acquired. Goodwill is not amortized, but an impairment test is performed at least annually to determine whether the fair value has decreased and is performed additionally when events indicate an impairment may have occurred. Goodwill is all related to our contract drilling segment, and accordingly, the impairment test is generally based on the estimated discounted future net cash flows of our drilling segment, utilizing discount rates and other factors in determining the fair value of our drilling segment. Inputs in our estimated discounted future net cash flows include rig utilization, day rates, gross margin percentages, and terminal value (these are all considered level 3 inputs). No goodwill impairment was recorded for the years ended December 31, 2013, 2012, or 2011. There were no additions to goodwill in 2013, 2012, or 2011. Goodwill of $3.9 million is deductible for tax purposes.

Intangible Assets

Intangible assets are capitalized and amortized over the estimated period benefited. Such amounts are reviewed for possible impairment whenever events or changes in circumstances indicate that the carrying amount may not be recoverable. No intangible asset impairment was recorded for the years ended December 31, 2013, 2012, or 2011. Amortization of $0.7 million, $1.2 million and $1.2 million was recorded in 2013, 2012, and 2011, respectively. Accumulated amortization for 2013 and 2012 was $18.0 million and $17.3 million, respectively. Our intangible assets became fully amortized in 2013, so no amortization is expected to be recorded in 2014.

Oil And Natural Gas Operations

We account for our oil and natural gas exploration and development activities using the full cost method of accounting prescribed by the SEC. Accordingly, all productive and non-productive costs incurred in connection with the acquisition, exploration and development of our oil, NGLs, and natural gas reserves, including directly related overhead costs and related asset retirement costs, are capitalized and amortized on a units-of-production method based on proved oil and natural gas reserves. Directly related overhead costs of $21.5 million, $17.6 million, and $15.6 million were capitalized in 2013, 2012, and 2011, respectively. Independent petroleum engineers annually audit our internal evaluation of our reserves. The average rates used for depreciation, depletion, and amortization (DD&A) were $13.32, $14.70, and $15.06 per Boe in 2013, 2012, and 2011, respectively. The calculation of DD&A includes estimated future expenditures to be incurred in developing proved reserves and estimated dismantlement and abandonment costs, net of estimated salvage values. Our unproved properties totaling $545.6 million are excluded from the DD&A calculation.

No gains or losses are recognized on the sale, conveyance or other disposition of oil and natural gas properties unless a significant reserve amount to our total reserves is involved.

Revenue from the sale of oil and natural gas is recognized when title passes, net of royalties.

Under the full cost rules, at the end of each quarter, we review the carrying value of our oil and natural gas properties. The full cost ceiling is based principally on the estimated future discounted net cash flows from our oil and natural gas properties discounted at 10%. We use the unweighted arithmetic average of the commodity prices existing on the first day of each of the 12 months before the end of the reporting period to calculate discounted future revenues, unless prices were otherwise determined under contractual arrangements. In the event the unamortized cost of oil and natural gas properties being amortized exceeds the full cost ceiling, as defined by the SEC, the excess is charged to expense in the period during which such excess occurs. Once incurred, a write-down of oil and natural gas properties is not reversible.

For the quarter ended June 30, 2012, the 12-month average commodity prices, including the discounted value of our cash flow hedges, decreased significantly, resulting in a non-cash ceiling test write down of $115.9 million pre-tax ($72.1 million, net of tax). Our qualifying cash flow hedges used in the ceiling test determination at June 30, 2012, consisted of swaps and collars, covering production of 2.9 MMBoe in 2012 and 4.5 MMBoe in 2013. The effect of those hedges on the June 30, 2012 ceiling test was a $32.5 million pre-tax increase in the discounted net cash flows of our oil and natural gas properties.

For the quarter ended December 31, 2012, the 12-month average commodity prices, including the discounted value of our cash flow hedges, decreased further, resulting in an additional non-cash ceiling test write down of $167.7 million pre-tax ($104.4 million, net of tax). Our qualifying cash flow hedges used in the ceiling test determination at December 31, 2012, consisted of swaps and collars covering 6.9 MMBoe in 2013. The effect of those hedges on the December 31, 2012 ceiling test was a $29.8 million pre-tax increase in the discounted net cash flows of our oil and natural gas properties. Our oil and natural gas hedging is discussed in Note 13 of the Notes to our Consolidated Financial Statements.

At December 31, 2013, using the existing 12-month average commodity prices, we were not required to record a ceiling test write-down. All cash flow hedges expired at December 31, 2013 and did not effect the ceiling test determination.

If there are declines in the 12-month average prices, we may be required to record a write-down in future periods.

Our contract drilling segment provides drilling services for our exploration and production segment. Depending on their timing some of the drilling services performed on our properties are also deemed to be associated with the acquisition of an ownership interest in the property. Revenues and expenses for such services are eliminated in our income statement, with any profit recognized as a reduction in our investment in our oil and natural gas properties. The contracts for these services are issued under the same conditions and rates as the contracts entered into with unrelated third parties. We eliminated revenue of $64.3 million, $49.6 million, and $52.2 million for 2013, 2012, and 2011, respectively from our contract drilling segment and eliminated the associated operating expense of $46.9 million, $34.1 million, and $32.6 million during 2013, 2012, and 2011, respectively, yielding $17.4 million, $15.5 million, and $19.6 million during 2013, 2012, and 2011, respectively, as a reduction to the carrying value of our oil and natural gas properties.

Gas Gathering And Processing Revenue

Our gathering and processing segment recognizes revenue from the gathering and processing of natural gas and NGLs in the period the service is provided based on contractual terms.

Insurance

We are self-insured for certain losses relating to workers’ compensation, control of well and employee medical benefits. Insured policies for other coverage contain deductibles or retentions per occurrence that range from $50,000 to $1.5 million. We have purchased stop-loss coverage in order to limit, to the extent feasible, per occurrence and aggregate exposure to certain types of claims. However, there is no assurance that the insurance coverage will adequately protect us against liability from all potential consequences. We have elected to use an ERISA governed occupational injury benefit plan to cover all Texas drilling operations in lieu of covering them under Texas Workers’ Compensation. If insurance coverage becomes more expensive, we may choose to self-insure, decrease our limits, raise our deductibles or any combination of these rather than pay higher premiums.

Hedging Activities

All derivatives are recognized on the balance sheet and measured at fair value. Derivatives that are designated as a cash flow hedge are measured by the effectiveness of the hedge, or the degree that the gain (loss) for the hedging instrument offsets the loss (gain) on the hedged item, at each reporting period. The effective portion of the gain (loss) on the derivative instrument is recognized in other comprehensive income as a component of equity and subsequently reclassified into earnings when the forecasted transaction affects earnings. The ineffective portion of a derivative’s change in fair value is required to be recognized in earnings immediately. Derivatives that are not designated for hedge treatment are recorded at fair value with gains (losses) recognized in earnings in the period of change. In August 2012, we determined on a prospective basis, to enter into economic hedges without electing cash flow hedge accounting. Our cash flow hedges (that existed before August 2012) expired in December 2013.

We do not engage in derivative transactions for speculative purposes. We document our risk management strategy, and for the cash flow hedges, we tested the hedge effectiveness at the inception of and during the term of each hedge.

Limited Partnerships

Unit Petroleum Company is a general partner in 16 oil and natural gas limited partnerships sold privately and publicly. Some of our officers, directors, and employees own the interests in most of these partnerships. We share in each partnership’s revenues and costs in accordance with formulas set out in each of the limited partnership agreement. The partnerships also reimburse us for certain administrative costs incurred on behalf of the partnerships.

Income Taxes

Measurement of current and deferred income tax liabilities and assets is based on provisions of enacted tax law; the effects of future changes in tax laws or rates are not included in the measurement. Valuation allowances are established where necessary to reduce deferred tax assets to the amount expected to be realized. Income tax expense is the tax payable for the year and the change during that year in deferred tax assets and liabilities.

The accounting for uncertainty in income taxes prescribes a recognition threshold and measurement attribute for the financial statement recognition and measurement of a tax position taken or expected to be taken in a return. Guidance is also provided on de-recognition, classification, interest and penalties, accounting in interim periods, disclosure, and transition. We have no unrecognized tax benefits and we do not expect any significant changes in unrecognized tax benefits in the next twelve months.

Natural Gas Balancing

We use the sales method for recording natural gas sales. This method allows for recognition of revenue, which may be more or less than its share of pro-rata production from certain wells. We estimate our December 31, 2013 balancing position to be approximately 5.2 Bcf on under-produced properties and approximately 4.5 Bcf on over-produced properties. We have recorded a receivable of $2.0 million on certain wells where we estimate that insufficient reserves are available for us to recover the under-production from future production volumes. We have also recorded a liability of $3.8 million on certain properties where we believe there are insufficient reserves available to allow the under-produced owners to recover their under-production from future production volumes. Our policy is to expense the pro-rata share of lease operating costs from all wells as incurred. Such expenses relating to the balancing position on wells in which we have imbalances are not material.

Employee And Director Stock Based Compensation

We recognize in our financial statements the cost of employee services received in exchange for awards of equity instruments based on the grant date fair value of those awards. The amount of our equity compensation cost relating to employees directly involved in exploration activities of our oil and natural gas segment is capitalized to our oil and natural gas properties. Amounts not capitalized to our oil and natural gas properties are recognized in general and administrative expense and operating costs of our business segments. We utilize the Black-Scholes option pricing model to measure the fair value of stock options and stock appreciation rights (SARs). The value of our restricted stock grants is based on the closing stock price on the date of the grants.

Impact of Financial Accounting Pronouncements

Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists. In July 2013, ASU 2013-11 was issued because GAAP does not include explicit guidance on the financial statement presentation of an unrecognized tax benefit when a net operating loss carryforward, a similar tax loss, or a tax credit carryforward exists. The amendment provides explicit guidance on the financial statement presentation of an unrecognized tax benefit when a net operating loss carryforward, a similar tax loss, or a tax credit carryforward exists. The amendments in this Update are effective for fiscal years, and interim periods within those years, beginning after December 15, 2013. Early adoption is permitted.  The amendments should be applied prospectively to all unrecognized tax benefits that exist at the effective date. Retrospective application is permitted. We anticipate there will be no effect on our financial position or results of operations when adopted.

Inclusion of the Fed Funds Effective Swap Rate (or Overnight Index Swap Rate) as a Benchmark Interest Rate for Hedge Accounting Purposes. The FASB has issued ASU 2013-10, the amendments in this update permit the Fed Funds Effective Swap Rate (OIS) to be used as a U.S. benchmark interest rate for hedge accounting purposes under Topic 815, in addition to U.S. Treasury and LIBOR. The amendments also remove the restriction on using different benchmark rates for similar hedges. The amendments are effective prospectively for qualifying new or redesignated hedging relationships entered into on or after July 17, 2013. We do not have any interest rate hedges at this time.

Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income. In February 2013, the FASB issued ASU 2013-02 to address the presentation of comprehensive income related to ASU 2011-05. The standard requires that companies present, either in a single note or parenthetically on the face of the financial statements, the effect of significant amounts reclassified from each component of accumulated other comprehensive income based on its source (e.g., the release due to cash flow hedges from interest rate contracts) and the income statement line items affected by the reclassification (e.g., interest income or interest expense). The amendments are effective for fiscal years, and interim periods within those years, beginning after December 15, 2012. We chose to present the information in a single note (Note 15 of the Notes to our Consolidated Financial Statements).

Clarifying the Scope of Disclosures about Offsetting Assets and Liabilities. In January 2013, the FASB issued ASU 2013-01 to limit the scope of balance sheet offsetting disclosures contained in previously issued guidance in ASU 2011-11—Disclosures about Offsetting Assets and Liabilities. Specifically, ASU 2011-11 applies only to derivatives, repurchase agreements and reverse purchase agreements, and securities borrowing and securities lending transactions that are either offset in accordance with specific criteria contained in the FASB Accounting Standards or subject to a master netting arrangement or similar agreement.

Unlike IFRS, GAAP allows companies the option to present net in their balance sheets derivatives that are subject to a legally enforceable netting arrangement with the same party where rights of set-off are only available in the event of default or bankruptcy. To address these differences between IFRS and GAAP, the FASB and the IASB (the Boards) issued an exposure draft that proposed new criteria for netting that were narrower than the current conditions currently in GAAP. Nevertheless, in response to feedback from their respective stakeholders, the Boards decided to retain their existing offsetting models. Instead, the Boards have issued common disclosure requirements related to offsetting arrangements to allow investors to better compare financial statements prepared in accordance with IFRS or GAAP. The amendments in this ASU require an entity to disclose information about offsetting and related arrangements to enable users of its financial statements to understand the effect of those arrangements on its financial position. An entity is required to apply the amendments for annual reporting periods beginning on or after January 1, 2013, and interim periods within those annual periods. An entity should provide the disclosures required by those amendments retrospectively for all comparative periods presented. Derivatives subject to a master netting agreement are the only transactions in this accounting standard that affect us. We provide the effect of netting on our financial position in Note 14 of the Notes to our Consolidated Financial Statements.

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Summary Of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2013

Accounting Policies [Abstract]

Schedule of Segment's Revenue

Below are the third-party customers that accounted for more than 10% of our segment’s revenues:

	2013		2012		2011
Oil and Natural Gas:
Valero Energy Corporation	25	%	26	%	18	%
Sunoco Partners Marketing	8	%	8	%	10	%
Drilling:
QEP Resources, Inc.	18	%	15	%	22	%
Kodiak Oil and Gas Corp.	10	%	10	%	6	%
Mid-Stream:
ONEOK, Inc.	50	%	54	%	54	%
Tenaska Resources, LLC	16	%	7	%	1	%
Gavilon, LLC	—	%	10	%	19	%

Schedule Of Fair Values Of The Net Assets (Liabilities)

At December 31, 2013, the fair values of the net assets (liabilities) we had with each of the counterparties with respect to all of our commodity derivative transactions are listed in the table below:

	December 31, 2013
	(In millions)
Canadian Imperial Bank of Commerce	$	0.5
Scotiabank	(0.3		)
Bank of Montreal	(5.2		)
Total assets (liabilities)	$	(5.0	)

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Consolidated Statements of Changes in Shareholders' Equity (Parenthetical) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Activity in employee compensation plans (shares)	525,056	430,506	241,011
Other comprehensive income, tax	$ (4,892)	$ (7,069)	$ 16,205

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Acquisitions and Divestitures (Tables)

12 Months Ended

Dec. 31, 2013

Acquisitions and divestitures [Abstract]

Schedule of Purchase Price Allocation

The Noble acquisition was accounted for using the acquisition method under ASC 805, Business Combinations, which required that the acquired assets and liabilities be recorded at their fair values as of the acquisition date. The following table summarizes the adjusted purchase price and the estimated values of assets acquired and liabilities assumed. It was based on information available to us at the time these consolidated financial statements were prepared and we believe these estimates are reasonable(in thousands):

Adjusted Purchase Price
Total consideration given	$	592,627
Adjusted Allocation of Purchase Price
Oil and natural gas properties included in the full cost pool:
Proved oil and natural gas properties	$	260,799
Unproved oil and natural gas properties	353,343
Total oil and natural gas properties included in the full cost pool (1)	614,142
Gas gathering and processing equipment and other	25,163
Asset retirement obligation	(46,678		)
Fair value of net assets acquired	$	592,627

(1) We used a discounted cash flow model and made market assumptions as to future commodity prices, projections of estimated quantities of oil and natural gas reserves, expectations for timing and amount of future development and operating costs, projections of future rates of production, expected recovery rates and risk adjusted discount rates.

Pro Forma Results

The following unaudited pro forma financial information is presented to reflect the operations of the acquired assets as if the acquisition had been completed on January 1, 2011. The unaudited pro forma financial information was derived from the historical accounting records of the seller adjusted for estimated transaction costs, depreciation, depletion and amortization, ceiling test impact, general and administrative expenses, capitalized interest, and interest on the $400.0 million of Notes issued along with additional borrowings under our credit agreement to finance the acquisition. The unaudited pro forma financial information does not purport to be indicative of results of operations that would have occurred had the transaction occurred on the basis assumed above, nor is such information indicative of our expected future results of operations. The pro forma results of operations do not include any cost savings or other synergies that resulted, or may result, from the acquisition or any estimated costs that will be incurred to integrate these assets. Future results may vary significantly from the results reflected in this pro forma financial information because of future events and transactions, as well as other factors.

	Twelve months ended December 31,
	2012		2011
	(In thousands, except per share amounts)
Pro forma:
Revenues	$	1,376,393	$	1,336,227
Net income	$	83,940	$	229,272
Net income per common share:
Basic	$	1.75	$	4.81
Diluted	$	1.74	$	4.78

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Fair Value Measurements (Reconciliations Of Level 3 Fair Value Measurements) (Details) (Collar [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012
Collar [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Beginning of period	$ (595)		$ 33,615
Included in earnings	(2,637)	[1]	24,484	[1]
Included in other comprehensive income (loss)	0		(11,641)
Settlements	637		(25,129)
Transfers out of Level 3 into Level 2	0		(21,924)
End of period	(2,595)		(595)
Total gains for the period included in earnings attributable to the change in unrealized gain relating to assets still held at end of period	$ (2,000)		$ (645)

[1] Commodity sales collars are reported in the consolidated statements of income in oil and gas revenues (for cash flow hedges), and gain (loss) on derivatives not designated as hedges and hedge ineffectiveness, net, respectively.

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Derivatives (Tables)

12 Months Ended

Dec. 31, 2013

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Non-designated Hedges Outstanding

At December 31, 2013, the following non-designated hedges were outstanding:

Term	Commodity	Hedged Volume	Weighted Average  Fixed Price for Swaps	Hedged Market
Jan’14 – Dec’14	Natural gas – swap	80,000 MMBtu/day	$4.24	IF – NYMEX (HH)
Jan’14 – Dec’14	Natural gas – collar	10,000 MMBtu/day	$3.75-4.37	IF – NYMEX (HH)
Jan’14 – Jun’14	Crude oil – swap	500 Bbl/day	$100.03	WTI – NYMEX
Jan’14 – Dec’14	Crude oil – swap	3,000 Bbl/day	$91.77	WTI – NYMEX
Jan’14 – Dec’14	Crude oil – collar	4,000 Bbl/day	$90.00-96.08	WTI – NYMEX

Schedule Of Subsequent Non-designated Hedges

Subsequent to December 31, 2013, the following non-designated hedges were entered into:

Term	Commodity	Hedged Volume	Weighted Average  Fixed Price for Swaps	Hedged Market
Mar'14	Natural gas – basis swap	30,000 MMBtu/day	$(0.095)	NGPL-TXOK
Mar'14	Natural gas – basis swap	60,000 MMBtu/day	$(0.027)	NGPL-Midcon

Fair Value Of Derivative Instruments And Locations In Balance Sheets

The following tables present the fair values of our derivative transactions and the location within our balance sheets where those values are recorded at December 31:

		Derivative Assets Fair Value
	Balance Sheet Location	2013		2012
		(In thousands)
Derivatives designated as hedging instruments
Commodity derivatives:
Current	Current derivative assets	$	—	$	13,674
Long-term	Non-current derivative assets	—		—
Total derivatives designated as hedging instruments		—		13,674
Derivatives not designated as hedging instruments
Commodity derivatives:
Current	Current derivative assets	515		2,878
Long-term	Non-current derivative assets	—		—
Total derivatives not designated as hedging instruments		515		2,878
Total derivative assets		$	515	$	16,552

		Derivative Liabilities Fair Value
	Balance Sheet Location	2013		2012
		(In thousands)
Derivatives designated as hedging instruments
Commodity derivatives:
Current	Current derivative liabilities	$	—	$	1,005
Long-term	Non-current derivative liabilities	—		—
Total derivatives designated as hedging instruments		—		1,005
Derivatives not designated as hedging instruments
Commodity derivatives:
Current	Current derivative liabilities	5,561		943
Long-term	Non-current derivative liabilities	—		562
Total derivatives not designated as hedging instruments		5,561		1,505
Total derivative liabilities		$	5,561	$	2,510

Amount Of Gain Or (Loss) Recognized In Accumulated OCI On Derivative

Effect of Derivative Instruments on the Consolidated Balance Sheets (cash flow hedges) for the year ended December 31:

Derivatives in Cash Flow Hedging Relationships	Amount of Gain or (Loss)  Recognized in Accumulated OCI on Derivative (Effective Portion) (1)
	2013		2012
	(In thousands)
Commodity derivatives	$	—	$	7,587

_________________________

(1) Net of taxes.

Gain Or Loss Of Reclassified Accumulated Other Comprehensive Income And Recognized Income

Effect of derivative instruments on the Consolidated Statements of Income (cash flow hedges) for the year ended December 31:

Derivative Instrument	Location of Gain or (Loss) Reclassified  from Accumulated OCI into Income &  Location of Gain or (Loss) Recognized in Income	Amount of Gain or (Loss) Reclassified from  Accumulated OCI into Income (1)				Amount of Gain or (Loss) Recognized in Income (2)
		2013		2012		2013			2012
		(In thousands)
Commodity derivatives	Oil and natural gas revenue (1)	$	603	$	51,853	$	—		$	—
Commodity derivatives	Gain (loss) on derivatives not designated as hedges and hedge ineffectiveness, net (2)	—		—		(190		)	(2,616		)
	Total	$	603	$	51,853	$	(190	)	$	(2,616	)

_________________________

(1) Effective portion of gain (loss).

(2) Ineffective portion of gain (loss).

Effect Of Derivative Instruments Recognized In Statement Of Operations, Not Designated As Hedging Instruments

Effect of Derivative Instruments on the Consolidated Statements of Income (derivatives not designated as hedging instruments) for the year ended December 31:

	Location of Gain or (Loss) Recognized in Income on Derivative	Amount of Gain or (Loss) Recognized in Income on  Derivative
Derivatives Not Designated as Hedging Instruments		2013			2012
		(In thousands)
Commodity derivatives	Gain (loss) on derivatives not designated as hedges and hedge ineffectiveness, net (1)	$	(8,184	)	$	1,373
Total		$	(8,184	)	$	1,373

_________________________

(1) Amount settled during the period is a loss of $(1,764) and $0, respectively.

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Earnings Per Share (Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share) (Details) (Derivative [Member], USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Derivative [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Stock options and SARs	149,665	250,901	105,000
Average Exercise Price	$ 58.41	$ 52.72	$ 61.24

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Stock-Based Compensation (Shares Authorized Under Stock Option Plans By Exercise Price Range) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013
Stock Options [Member] | $37.69 - $37.83 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Prices Minimum	$ 37.69
Exercise Prices Maximum	$ 37.83
Outstanding and Exercisable Options, Number Of Shares	68,920
Outstanding and exercisable options weighted average remaining contractual life, years	1 year
Outstanding and Exercisable Options, Weighted Average Exercise Price	$ 37.81
Directors Plan [Member] | $28.23 - $41.21 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Prices Minimum	$ 28.23
Exercise Prices Maximum	$ 41.21
Outstanding and Exercisable Options, Number Of Shares	66,500
Outstanding and exercisable options weighted average remaining contractual life, years	4 years 7 months 6 days
Outstanding and Exercisable Options, Weighted Average Exercise Price	$ 36.64
Directors Plan [Member] | $53.81 - $73.26 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Prices Minimum	$ 53.81
Exercise Prices Maximum	$ 73.26
Outstanding and Exercisable Options, Number Of Shares	105,000
Outstanding and exercisable options weighted average remaining contractual life, years	4 years 6 months
Outstanding and Exercisable Options, Weighted Average Exercise Price	$ 61.24

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Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 18,593	$ 974
Accounts receivable (less allowance for doubtful accounts of $5,342 and $5,343 at December 31, 2013 and 2012, respectively)	139,788	146,046
Materials and supplies	10,998	8,563
Current derivative asset (Note 13)	515	16,552
Current income tax receivable	0	901
Current deferred tax asset (Note 8)	13,585	8,765
Assets held for sale (Note 3)	15,621	0
Prepaid expenses and other	12,931	13,843
Total current assets	212,031	195,644
Oil and natural gas properties, on the full cost method:
Proved properties	4,235,712	3,822,381
Unproved properties not being amortized	545,588	521,659
Drilling equipment	1,477,093	1,478,645
Gas gathering and processing equipment	549,422	461,629
Transportation equipment	39,666	37,728
Other	87,435	62,840
Property, plant and equipment, gross, total	6,934,916	6,384,882
Less accumulated depreciation, depletion, amortization, and impairment	3,212,225	2,907,660
Net property and equipment	3,722,691	3,477,222
Debt issuance cost	11,844	13,432
Goodwill (Note 2)	62,808	62,808
Other intangible assets, net	0	680
Other assets	13,016	11,334
Total assets	4,022,390	3,761,120
Current liabilities:
Accounts payable	154,062	138,811
Accrued liabilities (Note 5)	64,363	54,098
Income taxes payable	7,474	0
Current derivative liabilities (Note 13)	5,561	1,948
Current portion of other long-term liabilities (Note 6)	12,113	12,282
Total current liabilities	243,573	207,139
Long-term debt (Note 6)	645,696	716,359
Non-current derivative liabilities (Note 13)	0	562
Other long-term liabilities (Note 6)	158,331	166,983
Deferred income taxes (Note 8)	801,398	695,776
Commitments and contingencies (Note 16)	0	0
Shareholders' equity:
Preferred stock, $1.00 par value, 5,000,000 shares authorized, none issued	0	0
Common stock, $0.20 par value, 175,000,000 shares authorized, 49,107,004 and 48,581,948 shares issued as of December 31, 2013 and 2012, respectively	9,659	9,594
Capital in excess of par value	445,470	423,603
Accumulated other comprehensive income (net of tax of $0 and $4,892, respectively) (Note 15)	0	7,587
Retained earnings	1,718,263	1,533,517
Total shareholders' equity	2,173,392	1,974,301
Total liabilities and shareholders' equity	$ 4,022,390	$ 3,761,120

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Supplemental Oil And Gas Disclosures (Tables)

12 Months Ended

Dec. 31, 2013

Supplemental Oil and Gas Disclosures [Abstract]

Schedule Of Capitalized Costs And Costs Incurred On Oil And Gas Properties

The capitalized costs at year-end and costs incurred during the year were as follows:

	2013			2012			2011
	(In thousands)
Capitalized costs:
Proved properties	$	4,235,712		$	3,822,381		$	3,302,032
Unproved properties	545,588			521,659			185,632
	4,781,300			4,344,040			3,487,664
Accumulated depreciation, depletion, amortization, and impairment	(2,439,458		)	(2,216,787		)	(1,724,312		)
Net capitalized costs	$	2,341,842		$	2,127,253		$	1,763,352
Cost incurred:
Unproved properties acquired	$	76,304		$	420,467		$	70,999
Proved properties acquired	—			225,669			50,013
Exploration	33,373			46,467			43,836
Development	424,314			390,649			391,862
Asset retirement obligation	(17,951		)	45,097			23,345
Total costs incurred	$	516,040		$	1,128,349		$	580,055

Schedule Of The Oil And Natural Gas Property Costs Not Being Amortized

The following table shows a summary of the oil and natural gas property costs not being amortized at December 31, 2013, by the year in which such costs were incurred:

	2013		2012		2011		2010 and Prior		Total
	(In thousands)
Unproved properties acquired and wells in progress	$	92,929	$	412,623	$	32,492	$	7,544	$	545,588

Results Of Operations For Producing Activities

The results of operations for producing activities are as follows:

	2013			2012			2011
	(In thousands)
Revenues	$	633,792		$	557,003		$	505,450
Production costs	(162,822		)	(131,389		)	(115,400		)
Depreciation, depletion, amortization, and impairment	(222,672		)	(492,475		)	(181,960		)
	248,298			(66,861		)	208,090
Income tax (expense) benefit	(96,091		)	27,533			(80,323		)
Results of operations for producing activities (excluding corporate overhead and financing costs)	$	152,207		$	(39,328	)	$	127,767

Schedule Of Proved Developed And Undeveloped Oil And Gas Reserve Quantities

Estimated quantities of proved developed oil, NGLs, and natural gas reserves and changes in net quantities of proved developed and undeveloped oil, NGLs, and natural gas reserves were as follows:

	Oil Bbls		NGLs Bbls		Natural Gas Mcf
	(In thousands)
2013
Proved Developed and Undeveloped Reserves:
Beginning of Year	21,998		35,166		555,647
Revision of Previous Estimates	(2,113	)	836		2,421
Extensions and Discoveries	4,678		7,273		68,611
Infill Reserves in Existing Proved Fields	2,299		1,945		21,573
Purchases of Minerals in Place	—		—		11
Production	(3,360	)	(3,914	)	(56,757	)
Sales	(1,737	)	(101	)	(9,722	)
End of Year	21,765		41,205		581,784
Proved Developed Reserves:
Beginning of Year	16,441		25,657		452,844
End of Year	15,594		30,437		464,234
Proved Undeveloped Reserves:
Beginning of Year	5,557		9,509		102,803
End of Year	6,171		10,768		117,550
2012
Proved Developed and Undeveloped Reserves:
Beginning of Year	20,255		22,087		442,135
Revision of Previous Estimates (1)	(1,747	)	(2,682	)	(55,110	)
Extensions and Discoveries	5,014		4,819		54,761
Infill Reserves in Existing Proved Fields	4,196		3,018		25,057
Purchases of Minerals in Place	2,830		11,098		141,494
Production	(3,279	)	(2,796	)	(48,930	)
Sales	(5,271	)	(378	)	(3,760	)
End of Year	21,998		35,166		555,647
Proved Developed Reserves:
Beginning of Year	15,618		16,649		372,311
End of Year	16,441		25,657		452,844
Proved Undeveloped Reserves:
Beginning of Year	4,637		5,438		69,824
End of Year	5,557		9,509		102,803
2011
Proved Developed and Undeveloped Reserves:
Beginning of Year	17,494		16,117		420,486
Revision of Previous Estimates (1)	374		2,112		(30,510	)
Extensions and Discoveries	3,477		3,924		39,836
Infill Reserves in Existing Proved Fields	1,229		1,780		15,592
Purchases of Minerals in Place	192		393		40,835
Production	(2,511	)	(2,239	)	(44,104	)
Sales	—		—		—
End of Year	20,255		22,087		442,135
Proved Developed Reserves:
Beginning of Year	12,773		12,088		346,928
End of Year	15,618		16,649		372,311
Proved Undeveloped Reserves:
Beginning of Year	4,721		4,029		73,558
End of Year	4,637		5,438		69,824

_________________________

(1) Natural gas revisions of previous estimates decreased primarily due to a decline in natural gas prices.

Standardized Measure Of Discounted Future Cash Flows Relating To Proved Reserves Disclosure

The standardized measure of discounted future net cash flows (SMOG) was calculated using 12-month average prices and year-end costs and statutory tax rates, adjusted for permanent differences that relate to existing proved oil, NGLs, and natural gas reserves. SMOG as of December 31 is as follows:

	2013			2012			2011
	(In thousands)
Future cash flows	$	5,573,119		$	4,522,351		$	4,583,629
Future production costs	(1,734,985		)	(1,405,773		)	(1,277,856		)
Future development costs	(571,170		)	(431,673		)	(340,992		)
Future income tax expenses	(1,044,608		)	(762,519		)	(952,736		)
Future net cash flows	2,222,356			1,922,386			2,012,045
10% annual discount for estimated timing of cash flows	(996,380		)	(842,430		)	(924,136		)
Standardized measure of discounted future net cash flows relating to proved oil, NGLs, and natural gas reserves	$	1,225,976		$	1,079,956		$	1,087,909

Schedule Of Principal Sources Of Changes In Standardized Measure Of Discounted Future Net Cash Flows

The principal sources of changes in the standardized measure of discounted future net cash flows were as follows:

	2013			2012			2011
	(In thousands)
Sales and transfers of oil and natural gas produced, net of production costs	$	(470,970	)	$	(425,626	)	$	(389,339	)
Net changes in prices and production costs	188,826			(321,099		)	115,852
Revisions in quantity estimates and changes in production timing	(10,650		)	(148,648		)	(38,336		)
Extensions, discoveries and improved recovery, less related costs	426,377			432,058			401,134
Changes in estimated future development costs	26,629			51,587			37,742
Previously estimated cost incurred during the period	96,457			104,377			45,327
Purchases of minerals in place	9			283,774			58,567
Sales of minerals in place	(43,435		)	(112,359		)	(29		)
Accretion of discount	147,579			157,842			128,492
Net change in income taxes	(170,091		)	94,678			(60,675		)
Other—net	(44,711		)	(124,537		)	(65,912		)
Net change	146,020			(7,953		)	232,823
Beginning of year	1,079,956			1,087,909			855,086
End of year	$	1,225,976		$	1,079,956		$	1,087,909

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Supplemental Oil And Gas Disclosures (Schedule Of Principal Sources Of Changes In Standardized Measure Of Discounted Future Net Cash Flows) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Reserve Quantities [Line Items]
Sales and transfers of oil and natural gas produced, net of production costs	$ (470,970)	$ (425,626)	$ (389,339)
Net changes in prices and production costs	188,826	(321,099)	115,852
Revisions in quantity estimates and changes in production timing	(10,650)	(148,648)	(38,336)
Extensions, discoveries and improved recovery, less related costs	426,377	432,058	401,134
Changes in estimated future development costs	26,629	51,587	37,742
Previously estimated cost incurred during the period	96,457	104,377	45,327
Purchases of minerals in place	9	283,774	58,567
Sales of minerals in place	(43,435)	(112,359)	(29)
Accretion of discount	147,579	157,842	128,492
Net change in income taxes	(170,091)	94,678	(60,675)
Other-net	(44,711)	(124,537)	(65,912)
Net change	146,020	(7,953)	232,823
Beginning of year	1,079,956	1,087,909	855,086
End of year	$ 1,225,976	$ 1,079,956	$ 1,087,909

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Consolidated Statements of Comprehensive Income Consolidated Statements of Comprehensive Income (Parenthetical) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Statement of Comprehensive Income Parenthetical [Abstract]
Change in value of derivative instruments used as cash flow hedges, tax	$ (4,717)	$ 12,094	$ 18,412
Reclassification - derivative settlements, tax	(249)	(20,171)	(1,146)
Ineffective portion of derivatives, tax	$ 74	$ 1,008	$ (1,061)

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Supplemental Oil And Gas Disclosures (Schedule Of Proved Developed And Undeveloped Oil And Gas Reserve Quantities) (Details)	12 Months Ended
	Dec. 31, 2013 bbl	Dec. 31, 2012 bbl	Dec. 31, 2011 bbl
Oil [Member] (bbls)
Reserve Quantities [Line Items]
Beginning of year	21,998,000	20,255,000	17,494,000
Revision of previous estimates	(2,113,000)	(1,747,000)	374,000	[1]
Extensions and discoveries	4,678,000	5,014,000	3,477,000
Infill reserves in existing proved fields	2,299,000	4,196,000	1,229,000
Purchases of minerals in place	0	2,830,000	192,000
Production	(3,360,000)	(3,279,000)	(2,511,000)
Sales	(1,737,000)	(5,271,000)	0
End of Year	21,765,000	21,998,000	20,255,000
Beginning of year, developed	16,441,000	15,618,000	12,773,000
End of year, developed	15,594,000	16,441,000	15,618,000
Beginning of year, undeveloped	5,557,000	4,637,000	4,721,000
End of year, undeveloped	6,171,000	5,557,000	4,637,000
Natural Gas Liquids [Member] (bbls)
Reserve Quantities [Line Items]
Beginning of year	35,166,000	22,087,000	16,117,000
Revision of previous estimates	836,000	(2,682,000)	2,112,000	[1]
Extensions and discoveries	7,273,000	4,819,000	3,924,000
Infill reserves in existing proved fields	1,945,000	3,018,000	1,780,000
Purchases of minerals in place	0	11,098,000	393,000
Production	(3,914,000)	(2,796,000)	(2,239,000)
Sales	(101,000)	(378,000)	0
End of Year	41,205,000	35,166,000	22,087,000
Beginning of year, developed	25,657,000	16,649,000	12,088,000
End of year, developed	30,437,000	25,657,000	16,649,000
Beginning of year, undeveloped	9,509,000	5,438,000	4,029,000
End of year, undeveloped	10,768,000	9,509,000	5,438,000
Natural Gas [Member] (Mcf)
Reserve Quantities [Line Items]
Beginning of year	555,647,000	442,135,000	420,486,000
Revision of previous estimates	2,421,000	(55,110,000)	(30,510,000)	[1]
Extensions and discoveries	68,611,000	54,761,000	39,836,000
Infill reserves in existing proved fields	21,573,000	25,057,000	15,592,000
Purchases of minerals in place	11,000	141,494,000	40,835,000
Production	(56,757,000)	(48,930,000)	(44,104,000)
Sales	(9,722,000)	(3,760,000)	0
End of Year	581,784,000	555,647,000	442,135,000
Beginning of year, developed	452,844,000	372,311,000	346,928,000
End of year, developed	464,234,000	452,844,000	372,311,000
Beginning of year, undeveloped	102,803,000	69,824,000	73,558,000
End of year, undeveloped	117,550,000	102,803,000	69,824,000

[1] Natural gas revisions of previous estimates decreased primarily due to a decline in natural gas prices.

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Income Taxes (Reconciliation Of Income Tax Expense) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]
Income tax expense computed by applying the statutory rate	$ 105,514	$ 13,791	$ 111,651
State income tax, net of federal benefit	8,290	1,084	8,941
Statutory depletion and other	2,919	1,351	2,543
Total income taxes	$ 116,723	$ 16,226	$ 123,135

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Long-Term Debt And Other Long-Term Liabilities (Tables)

12 Months Ended

Dec. 31, 2013

Long-term debt and other long-term liabilites [Abstract]

Long Term Debt

Long-term debt consisted of the following as of December 31:

	2013		2012
	(In thousands)
Credit agreement with an average interest rates of 2.9% at December 31, 2012	$	—	$	71,100
6.625% senior subordinated notes due 2021, net of unamortized discount of $4.3 million and $4.7 million at December 31, 2013 and 2012, respectively	645,696		645,259
Total long-term debt	$	645,696	$	716,359

Other Long Term Liabilities

Other long-term liabilities consisted of the following as of December 31:

	2013		2012
	(In thousands)
ARO liability	$	133,657	$	146,159
Workers’ compensation	20,041		18,517
Separation benefit plans	9,382		7,972
Gas balancing liability	3,775		3,838
Deferred compensation plan	3,589		2,779
	170,444		179,265
Less current portion	12,113		12,282
Total other long-term liabilities	$	158,331	$	166,983

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Transactions With Related Parties (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Related Party Transaction [Line Items]
Number of oil and gas limited partnerships	16
Number of oil and gas limited partnerships for third party investment	3
Number of oil and gas limited partnerships for employee investment	13
Minimum salary for employees to participate in the oil and gas partnership			$ 36,000
Minimum [Member]
Related Party Transaction [Line Items]
Interest rate of employee partnerships in oil and gas properties	1.00%
Maximum [Member]
Related Party Transaction [Line Items]
Interest rate of employee partnerships in oil and gas properties	15.00%
Upland Resources [Member]
Related Party Transaction [Line Items]
Number of wells drilled	0	3.0
Revenue from Related Parties		1,600,000
Payments for Royalties	$ 1,400,000	$ 1,200,000	$ 700,000

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Derivatives

12 Months Ended

Dec. 31, 2013

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivatives

Commodity Derivatives

We have entered into various types of derivative transactions covering some of our projected natural gas, NGLs, and oil production. These transactions are intended to reduce our exposure to market price volatility by setting the price(s) we will receive for that production. Our decisions on the price(s), type, and quantity of our production hedged is based, in part, on our view of current and future market conditions. As of December 31, 2013, our derivative transactions consisted of the following types of hedges:

• Swaps. We receive or pay a fixed price for the hedged commodity and pay or receive a floating market price to the counterparty. The fixed-price payment and the floating-price payment are netted, resulting in a net amount due to or from the counterparty.

• Collars. A collar contains a fixed floor price (put) and a ceiling price (call). If the market price exceeds the call strike price or falls below the put strike price, we receive the fixed price and pay the market price. If the market price is between the call and the put strike price, no payments are due from either party.

We have documented policies and procedures to monitor and control the use of derivative instruments. We do not engage in derivative transactions for speculative purposes. In August 2012, we determined on a prospective basis, to enter into economic hedges without electing cash flow hedge accounting. Therefore, the change in fair value, on all commodity derivatives entered into after that determination, will be reflected in the income statement and not in accumulated other comprehensive income (OCI).

At December 31, 2013, the following non-designated hedges were outstanding:

Term	Commodity	Hedged Volume	Weighted Average  Fixed Price for Swaps	Hedged Market
Jan’14 – Dec’14	Natural gas – swap	80,000 MMBtu/day	$4.24	IF – NYMEX (HH)
Jan’14 – Dec’14	Natural gas – collar	10,000 MMBtu/day	$3.75-4.37	IF – NYMEX (HH)
Jan’14 – Jun’14	Crude oil – swap	500 Bbl/day	$100.03	WTI – NYMEX
Jan’14 – Dec’14	Crude oil – swap	3,000 Bbl/day	$91.77	WTI – NYMEX
Jan’14 – Dec’14	Crude oil – collar	4,000 Bbl/day	$90.00-96.08	WTI – NYMEX

Subsequent to December 31, 2013, the following non-designated hedges were entered into:

Term	Commodity	Hedged Volume	Weighted Average  Fixed Price for Swaps	Hedged Market
Mar'14	Natural gas – basis swap	30,000 MMBtu/day	$(0.095)	NGPL-TXOK
Mar'14	Natural gas – basis swap	60,000 MMBtu/day	$(0.027)	NGPL-Midcon

The following tables present the fair values of our derivative transactions and the location within our balance sheets where those values are recorded at December 31:

		Derivative Assets Fair Value
	Balance Sheet Location	2013		2012
		(In thousands)
Derivatives designated as hedging instruments
Commodity derivatives:
Current	Current derivative assets	$	—	$	13,674
Long-term	Non-current derivative assets	—		—
Total derivatives designated as hedging instruments		—		13,674
Derivatives not designated as hedging instruments
Commodity derivatives:
Current	Current derivative assets	515		2,878
Long-term	Non-current derivative assets	—		—
Total derivatives not designated as hedging instruments		515		2,878
Total derivative assets		$	515	$	16,552

		Derivative Liabilities Fair Value
	Balance Sheet Location	2013		2012
		(In thousands)
Derivatives designated as hedging instruments
Commodity derivatives:
Current	Current derivative liabilities	$	—	$	1,005
Long-term	Non-current derivative liabilities	—		—
Total derivatives designated as hedging instruments		—		1,005
Derivatives not designated as hedging instruments
Commodity derivatives:
Current	Current derivative liabilities	5,561		943
Long-term	Non-current derivative liabilities	—		562
Total derivatives not designated as hedging instruments		5,561		1,505
Total derivative liabilities		$	5,561	$	2,510

If a legal right of set-off exists, we net the value of the derivative transactions we have with the same counterparty in our balance sheets.

We recognized in accumulated other comprehensive income (OCI) the effective portion of any changes in fair value and reclassified the recognized gains (losses) on the sales to oil and natural gas revenue as the underlying transactions were settled. All cash flow hedges expired as of December 31, 2013, therefore we had no balance in accumulated OCI at December 31, 2013 and at December 31, 2012, we had a gain of $7.6 million, net of tax.

For our economic hedges that we elected not to apply cash flow accounting to, any changes in their fair value occurring before their maturity (i.e., temporary fluctuations in value) are reported in gain (loss) on derivatives not designated as hedges and hedge ineffectiveness, net in our consolidated statements of income. Changes in the fair value of derivatives that were designated as cash flow hedges, to the extent they were effective in offsetting cash flows attributable to the hedged risk, were recorded in OCI until the hedged item was recognized into earnings. When the hedged item was recognized into earnings, it was reported in oil and natural gas revenues. Any change in fair value that resulted from ineffectiveness was recognized in gain (loss) on derivatives not designated as hedges and hedge ineffectiveness, net.

Effect of Derivative Instruments on the Consolidated Balance Sheets (cash flow hedges) for the year ended December 31:

Derivatives in Cash Flow Hedging Relationships	Amount of Gain or (Loss)  Recognized in Accumulated OCI on Derivative (Effective Portion) (1)
	2013		2012
	(In thousands)
Commodity derivatives	$	—	$	7,587

_________________________

(1) Net of taxes.

Effect of derivative instruments on the Consolidated Statements of Income (cash flow hedges) for the year ended December 31:

Derivative Instrument	Location of Gain or (Loss) Reclassified  from Accumulated OCI into Income &  Location of Gain or (Loss) Recognized in Income	Amount of Gain or (Loss) Reclassified from  Accumulated OCI into Income (1)				Amount of Gain or (Loss) Recognized in Income (2)
		2013		2012		2013			2012
		(In thousands)
Commodity derivatives	Oil and natural gas revenue (1)	$	603	$	51,853	$	—		$	—
Commodity derivatives	Gain (loss) on derivatives not designated as hedges and hedge ineffectiveness, net (2)	—		—		(190		)	(2,616		)
	Total	$	603	$	51,853	$	(190	)	$	(2,616	)

_________________________

(1) Effective portion of gain (loss).

(2) Ineffective portion of gain (loss).

Effect of Derivative Instruments on the Consolidated Statements of Income (derivatives not designated as hedging instruments) for the year ended December 31:

	Location of Gain or (Loss) Recognized in Income on Derivative	Amount of Gain or (Loss) Recognized in Income on  Derivative
Derivatives Not Designated as Hedging Instruments		2013			2012
		(In thousands)
Commodity derivatives	Gain (loss) on derivatives not designated as hedges and hedge ineffectiveness, net (1)	$	(8,184	)	$	1,373
Total		$	(8,184	)	$	1,373

_________________________

(1) Amount settled during the period is a loss of $(1,764) and $0, respectively.

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Asset Retirement Obligations (Tables)

12 Months Ended

Dec. 31, 2013

Asset Retirement Obligation Disclosure [Abstract]

Schedule Of Asset Retirement Obligations

The following table shows certain information about our AROs for the periods indicated:

	2013			2012
	(In thousands)
ARO liability, January 1:	$	146,159		$	96,446
Accretion of discount	5,450			4,615
Liability incurred	4,857			56,650			(1)
Liability settled	(4,751		)	(2,788		)
Liability sold	(2,622		)	(1,258		)
Revision of estimates (2)	(15,436		)	(7,506		)
ARO liability, December 31:	133,657			146,159
Less current portion	2,954			2,953
Total long-term ARO liability	$	130,703		$	143,206

_________________________

(1) The liability incurred increased $46.7 million related to the Noble properties acquired in September 2012.

(2) Plugging liability estimates were revised in both 2013 and 2012 for updates in the cost of services used to plug wells over the preceding year. We had various upward and downward adjustments as well as changes in estimated timing of cash flows.

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Schedule II - Valuation And Qualifying Accounts And Reserves (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Valuation and Qualifying Accounts [Abstract]
Balance at Beginning of Period	$ 5,343	$ 5,343	$ 5,083
Additions Charged to Costs And Expenses	0	90	260
Deductions And Net Write-Offs	(1)	(90)	0
Balance at End of Period	$ 5,342	$ 5,343	$ 5,343

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Accumulated Other Comprehensive Income

12 Months Ended

Dec. 31, 2013

Equity [Abstract]

Accumulated other comprehensive income

Changes in accumulated other comprehensive income (loss) by component, net of tax, are as follows:

	Net Gains (Losses) on Cash Flow Hedges
	2013			2012			2011
	(In thousands)
Balance at January 1:	$	7,587		$	19,026		$	(6,851	)
Other comprehensive income before reclassification	(7,349		)	18,635			29,384
Amounts reclassified from accumulated other comprehensive income	(238		)	(30,074		)	(3,507		)
New current-period other comprehensive income	(7,587		)	(11,439		)	25,877
Balance at December 31:	$	—		$	7,587		$	19,026

Amounts reclassified from accumulated other comprehensive income (loss) into the consolidated statements of income for the year ended December 31:

	2013			2012			2011			Affected Line Item in the Statement Where Net Income is Presented
	(In thousands)
Net gains (loss) on cash flow hedges
Commodity derivatives	$	603		$	51,853		$	2,965		Oil and natural gas revenues
Commodity derivatives	(190		)	(2,616		)	2,749			Gain (loss) on derivatives not designated as hedges and hedge ineffectiveness, net
	413			49,237			5,714			Total before tax
	(175		)	(19,163		)	(2,207		)	Tax expense
Total reclassification for the period	$	238		$	30,074		$	3,507		Net of tax

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Stock-Based Compensation (Estimated Fair Value Of The Stock Options Granted) (Details) (Directors Plan [Member], USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Directors Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted	0	0	31,500
Estimated fair value (in millions)			$ 0.7
Estimate of stock volatility			0.48
Estimated dividend yield			0.00%
Risk free interest rate			2.00%
Expected life range based on prior experience (in years)			5 years
Forfeiture rate			0.00%

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Consolidated Statements of Changes in Shareholders' Equity (USD $) In Thousands, unless otherwise specified	Total	Common Stock	Capital In Excess of Par Value	Accumulated Other Comprehensive Income	Retained Earnings [Member]
Beginning balances at Dec. 31, 2010
Comprehensive income:
Net income	$ 195,867	$ 0	$ 0	$ 0	$ 195,867
Other comprehensive income, net of tax	25,877	0	0	25,877	0
Total comprehensive income	221,744
Activity in employee compensation plans	14,656	48	14,608	0	0
Ending balances at Dec. 31, 2011	1,947,017	9,541	408,109	19,026	1,510,341
Comprehensive income:
Net income	23,176	0	0	0	23,176
Other comprehensive income, net of tax	(11,439)	0	0	(11,439)	0
Total comprehensive income	11,737
Activity in employee compensation plans	15,547	53	15,494	0	0
Ending balances at Dec. 31, 2012	1,974,301	9,594	423,603	7,587	1,533,517
Comprehensive income:
Net income	184,746	0	0	0	184,746
Other comprehensive income, net of tax	(7,587)	0	0	(7,587)	0
Total comprehensive income	177,159
Activity in employee compensation plans	21,932	65	21,867	0	0
Ending balances at Dec. 31, 2013	$ 2,173,392	$ 9,659	$ 445,470	$ 0	$ 1,718,263

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Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Statement of Financial Position [Abstract]
Accounts receivable, allowance for doubtful accounts	$ 5,342	$ 5,343
Preferred stock, par value	$ 1	$ 1
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, issued	0	0
Common stock, par value	$ 0.2	$ 0.2
Common stock, shares authorized	175,000,000	175,000,000
Common stock, shares issued	49,107,004	48,581,948
Accumulated other comprehensive income, tax	$ 0	$ 4,892

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Income Taxes

12 Months Ended

Dec. 31, 2013

Income Tax Disclosure [Abstract]

Income Taxes

A reconciliation of income tax expense, computed by applying the federal statutory rate to pre-tax income to our effective income tax expense is as follows:

	2013		2012		2011
	(In thousands)
Income tax expense computed by applying the statutory rate	$	105,514	$	13,791	$	111,651
State income tax, net of federal benefit	8,290		1,084		8,941
Statutory depletion and other	2,919		1,351		2,543
Income tax expense	$	116,723	$	16,226	$	123,135

For the periods indicated, the total provision for income taxes consisted of the following:

	2013		2012			2011
	(In thousands)
Current taxes:
Federal	$	15,845	$	2,084		$	(3,159	)
State	146		(1,388		)	743
	15,991		696			(2,416		)
Deferred taxes:
Federal	87,839		13,768			109,363
State	12,893		1,762			16,188
	100,732		15,530			125,551
Total provision	$	116,723	$	16,226		$	123,135

Deferred tax assets and liabilities are comprised of the following at December 31:

	2013			2012
	(In thousands)
Deferred tax assets:
Allowance for losses and nondeductible accruals	$	77,285		$	74,890
Net operating loss carryforward	61,055			56,020
Alternative minimum tax credit carryforward	17,258			1,972
	155,598			132,882
Deferred tax liability:
Depreciation, depletion, amortization and impairment	(943,411		)	(819,893		)
Net deferred tax liability	(787,813		)	(687,011		)
Current deferred tax asset	13,585			8,765
Non-current—deferred tax liability	$	(801,398	)	$	(695,776	)

Realization of the deferred tax assets are dependent on generating sufficient future taxable income. Although realization is not assured, management believes it is more likely than not that the deferred tax asset will be realized. The amount of the deferred tax asset considered realizable, however, could be reduced in the near-term if estimates of future taxable income are reduced. At December 31, 2013, we have federal net operating loss carryforwards of approximately $146.5 million which expire from 2015 to 2033.

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Supplemental Oil And Gas Disclosures (Results Of Operations For Producing Activities) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Supplemental Oil and Gas Disclosures [Abstract]
Revenues	$ 633,792	$ 557,003	$ 505,450
Production costs	(162,822)	(131,389)	(115,400)
Depreciation, depletion, amortization and impairment	(222,672)	(492,475)	(181,960)
Results of operations, income before income taxes	248,298	(66,861)	208,090
Income tax (expense) benefit	(96,091)	27,533	(80,323)
Results of operations for producing activities (excluding corporate overhead and financing costs)	$ 152,207	$ (39,328)	$ 127,767

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Supplemental Oil And Gas Disclosures (Schedule Of Capitalized Costs And Costs Incurred On Oil And Gas Properties) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Supplemental Oil and Gas Disclosures [Abstract]
Proved properties	$ 4,235,712	$ 3,822,381	$ 3,302,032
Unproved properties not being amortized	545,588	521,659	185,632
Capitalized costs gross	4,781,300	4,344,040	3,487,664
Accumulated depreciation, depletion, amortization and impairment	(2,439,458)	(2,216,787)	(1,724,312)
Net capitalized costs	2,341,842	2,127,253	1,763,352
Unproved properties acquired	76,304	420,467	70,999
Proved properties acquired	0	225,669	50,013
Exploration	33,373	46,467	43,836
Development	424,314	390,649	391,862
Asset retirement obligation	(17,951)	45,097	23,345
Total costs incurred	$ 516,040	$ 1,128,349	$ 580,055

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Document and Entity Information Document and Entity Information (USD $)	12 Months Ended
	Dec. 31, 2013	Feb. 14, 2014	Jun. 30, 2013
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2013
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	FY
Trading Symbol	unt
Entity Registrant Name	UNIT CORP
Entity Central Index Key	0000798949
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		49,232,860
Entity Well-known Seasoned Issuer	Yes
Entity Public Float			$ 1,080,689,810
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No

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Employee Benefit Plans

12 Months Ended

Dec. 31, 2013

Employee benefit plans [Abstract]

Employee Benefit Plans

Under our 401(k) Employee Thrift Plan, employees who meet specified service requirements may contribute a percentage of their total compensation, up to a specified maximum, to the plan. We may match each employee’s contribution, up to a specified maximum, in full or on a partial basis. We made discretionary contributions under the plan of 111,995, 95,598, and 71,742 shares of common stock and recognized expense of $6.0 million, $5.5 million, and $4.3 million in 2013, 2012, and 2011, respectively.

We provide a salary deferral plan (Deferral Plan) which allows participants to defer the recognition of salary for income tax purposes until actual distribution of benefits which occurs at either termination of employment, death or certain defined unforeseeable emergency hardships. The liability recorded under the Deferral Plan at December 31, 2013 and 2012 was $3.6 million and $2.8 million, respectively. We recognized payroll expense and recorded a liability at the time of deferral.

Effective January 1, 1997, we adopted a separation benefit plan (Separation Plan). The Separation Plan allows eligible employees whose employment is involuntarily terminated or, in the case of an employee who has completed 20 years of service, voluntarily or involuntarily terminated, to receive benefits equivalent to four weeks salary for every whole year of service completed up to a maximum of 104 weeks. To receive payments, the recipient must waive any claims against us in exchange for receiving the separation benefits. On October 28, 1997, we adopted a Separation Benefit Plan for Senior Management (Senior Plan). The Senior Plan provides certain officers and key executives of Unit with benefits generally equivalent to the Separation Plan. The Compensation Committee of the Board of Directors has absolute discretion in the selection of the individuals covered in this plan. On May 5, 2004 we also adopted the Special Separation Benefit Plan (Special Plan). This plan is identical to the Separation Benefit Plan with the exception that the benefits under the plan vest on the earliest of a participant’s reaching the age of 65 or serving 20 years with the company.

On December 31, 2008, we amended all three Plans to be in compliance with Section 409A of the Internal Revenue Code of 1986, as amended. The key amendments to the Plans address, among other things, when distributions may be made, the timing of payments, and the circumstances under which employees become eligible to receive benefits. None of the amendments materially increase the benefits, grants or awards issuable under the Plans. We recognized expense of $2.4 million, $2.2 million, and $1.9 million in 2013, 2012, and 2011, respectively, for benefits associated with anticipated payments from these separation plans.

We have entered into key employee change of control contracts with three of our current executive officers. These severance contracts have an initial three-year term that is automatically extended for one year on each anniversary, unless a notice not to extend is given by us. If a change of control of the company, as defined in the contracts, occurs during the term of the severance contract, then the contract becomes operative for a fixed three-year period. The severance contracts generally provide that the executive’s terms and conditions for employment (including position, work location, compensation, and benefits) will not be adversely changed during the three-year period after a change of control. If the executive’s employment is terminated (other than for cause, death, or disability), the executive terminates for good reason during such three-year period, or the executive terminates employment for any reason during the 30-day period following the first anniversary of the change of control, and on certain terminations prior to a change of control or in connection with or in anticipation of a change of control, the executive is generally entitled to receive, in addition to certain other benefits, any earned but unpaid compensation; up to 2.9 times the executive’s base salary plus annual bonus (based on historic annual bonus); and the company matching contributions that would have been made had the executive continued to participate in the company’s 401(k) plan for up to an additional three years.

The severance contract provides that the executive is entitled to receive a payment in an amount sufficient to make the executive whole for any excise tax on excess parachute payments imposed under Section 4999 of the Code. As a condition to receipt of these severance benefits, the executive must remain in the employ of the company prior to change of control and render services commensurate with his position.

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Derivatives (Effect Of Derivative Instruments Recognized In Statement Of Operations, Not Designated As Hedging Instruments) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Recognized in Income on Derivative	$ (8,184)		$ 1,373
Loss on derivatives not designated as hedging instruments, amount settled during period	(1,764)		0
Commodity Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Recognized in Income on Derivative	$ (8,184)	[1]	$ 1,373	[1]

[1] Amount settled during the period is a loss of $(1,764) and $0, respectively.

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Selected Quarterly Financial Information (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended																12 Months Ended
	Dec. 31, 2013		Sep. 30, 2013		Jun. 30, 2013		Mar. 31, 2013		Dec. 31, 2012		Sep. 30, 2012		Jun. 30, 2012		Mar. 31, 2012		Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Selected Quarterly Financial Information [Abstract]
Revenues	$ 359,121		$ 333,776		$ 340,421		$ 318,532		$ 331,582		$ 321,790		$ 327,785		$ 333,966		$ 1,351,850	$ 1,315,123	$ 1,207,503
Gross profit	92,692	[1]	79,082	[1]	90,823	[1]	83,683	[1]	(81,833)	[1]	95,921	[1]	(22,253)	[1]	95,912	[1]
Net income	$ 51,301		$ 34,232		$ 59,007		$ 40,206		$ (56,547)		$ 46,586		$ (19,302)		$ 52,439		$ 184,746	$ 23,176	$ 195,867
Basic	$ 1.06		$ 0.71		$ 1.22		$ 0.84		$ (1.18)	[2]	$ 0.97	[2]	$ (0.40)	[2]	$ 1.10	[2]	$ 3.83	$ 0.48	$ 4.11
Diluted	$ 1.05		$ 0.70		$ 1.22		$ 0.83		$ (1.18)		$ 0.97		$ (0.40)		$ 1.09		$ 3.80	$ 0.48	$ 4.08

[1] Gross profit excludes general and administrative expense, interest expense, (gain) loss on disposition of assets, gain (loss) on non-designated hedges and hedge ineffectiveness, income taxes, and other income (loss).

[2] Due to the effect of rounding the basic earnings per share for the year’s four quarters does not equal annual earnings per share.

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Consolidated Statements of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Revenues
Oil and natural gas	$ 649,718	$ 567,944	$ 514,614
Contract drilling	414,778	529,719	484,651
Gas gathering and processing	287,354	217,460	208,238
Total revenues	1,351,850	1,315,123	1,207,503
Oil and natural gas
Operating costs	184,001	150,212	131,271
Depreciation, depletion, and amortization	226,498	211,347	183,350
Impairment of oil and natural gas properties (Note 2)	0	283,606	0
Contract drilling
Operating costs	247,280	289,524	269,899
Depreciation	71,194	81,007	79,667
Gas gathering and processing
Operating costs	243,406	187,292	174,859
Depreciation, amortization, and impairment	33,191	24,388	16,101
General and administrative	38,323	33,086	30,055
(Gain) loss on disposition of assets	(17,076)	(253)	595
Total expenses	1,026,817	1,260,209	885,797
Income from operations	325,033	54,914	321,706
Other income (expense):
Interest, net	(15,015)	(14,137)	(4,167)
Gain (loss) on derivatives not designated as hedges and hedge ineffectiveness, net	(8,374)	(1,243)	1,702
Other	(175)	(132)	(239)
Total other expense	(23,564)	(15,512)	(2,704)
Income before income taxes	301,469	39,402	319,002
Income tax expense (benefit):
Current	15,991	696	(2,416)
Deferred	100,732	15,530	125,551
Total income taxes	116,723	16,226	123,135
Net income	$ 184,746	$ 23,176	$ 195,867
Net income per common share:
Basic	$ 3.83	$ 0.48	$ 4.11
Diluted	$ 3.80	$ 0.48	$ 4.08

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Acquisitions and Divestitures

12 Months Ended

Dec. 31, 2013

Acquisitions and divestitures [Abstract]

Acquisitions and Divestitures

On July 20, 2011, we acquired certain producing properties from an unaffiliated seller for approximately $12.3 million in cash, after post-closing adjustments, consisting of 30 operated wells and 59 non-operated well interests located in Beaver, Harper, and Ellis Counties,Oklahoma and Lipscomb County, Texas. The purchase price allocation was $8.4 million for proved properties and $3.9 million for acreage. The acquisition also included in excess of 12,000 net acres held by production available for future development.

On August 31, 2011, we acquired certain producing oil and gas properties for $30.5 million in cash, from an unaffiliated seller. Included in the acquisition were more than 500 wells located principally in the Oklahoma Arkoma Woodford and Hartshorne Coal plays along with other properties located throughout Oklahoma and Texas. The acquisition also included approximately 55,000 net acres of which 96% was held by production.

On September 17, 2012, we closed on the acquisition of certain oil and natural gas assets from Noble Energy, Inc. (Noble). After final closing adjustments, the acquisition included approximately 83,000 net acres primarily in the Granite Wash, Cleveland, and various other plays in western Oklahoma and the Texas Panhandle. The adjusted amount paid was $592.6 million.

As of the effective date of the Noble acquisition (April 1, 2012), the estimated proved reserves of the acquired properties were 44 million barrels of oil equivalent (MMBoe). The acquisition added approximately 24,000 net acres to our Granite Wash core area in the Texas Panhandle with significant resource potential including approximately 600 horizontal drilling locations. The total acreage acquired in other plays in western Oklahoma and the Texas Panhandle was approximately 59,000 net acres and is characterized by high working interest and operatorship, 95% of which was held by production. We also received four gathering systems as part of the transaction and other miscellaneous assets.

The Noble acquisition was accounted for using the acquisition method under ASC 805, Business Combinations, which required that the acquired assets and liabilities be recorded at their fair values as of the acquisition date. The following table summarizes the adjusted purchase price and the estimated values of assets acquired and liabilities assumed. It was based on information available to us at the time these consolidated financial statements were prepared and we believe these estimates are reasonable(in thousands):

Adjusted Purchase Price
Total consideration given	$	592,627
Adjusted Allocation of Purchase Price
Oil and natural gas properties included in the full cost pool:
Proved oil and natural gas properties	$	260,799
Unproved oil and natural gas properties	353,343
Total oil and natural gas properties included in the full cost pool (1)	614,142
Gas gathering and processing equipment and other	25,163
Asset retirement obligation	(46,678		)
Fair value of net assets acquired	$	592,627

(1) We used a discounted cash flow model and made market assumptions as to future commodity prices, projections of estimated quantities of oil and natural gas reserves, expectations for timing and amount of future development and operating costs, projections of future rates of production, expected recovery rates and risk adjusted discount rates.

Pro Forma Financial Information    

The following unaudited pro forma financial information is presented to reflect the operations of the acquired assets as if the acquisition had been completed on January 1, 2011. The unaudited pro forma financial information was derived from the historical accounting records of the seller adjusted for estimated transaction costs, depreciation, depletion and amortization, ceiling test impact, general and administrative expenses, capitalized interest, and interest on the $400.0 million of Notes issued along with additional borrowings under our credit agreement to finance the acquisition. The unaudited pro forma financial information does not purport to be indicative of results of operations that would have occurred had the transaction occurred on the basis assumed above, nor is such information indicative of our expected future results of operations. The pro forma results of operations do not include any cost savings or other synergies that resulted, or may result, from the acquisition or any estimated costs that will be incurred to integrate these assets. Future results may vary significantly from the results reflected in this pro forma financial information because of future events and transactions, as well as other factors.

	Twelve months ended December 31,
	2012		2011
	(In thousands, except per share amounts)
Pro forma:
Revenues	$	1,376,393	$	1,336,227
Net income	$	83,940	$	229,272
Net income per common share:
Basic	$	1.75	$	4.81
Diluted	$	1.74	$	4.78

From September 17, 2012, the date of the acquisition, through December 31, 2012, the portion of our revenues that were attributable to Noble were $21.4 million with a net loss of $0.8 million.

2012 Divestitures

We completed the following divestitures in 2012, the proceeds all of which reduced the net book value of the full cost pool with no gain or loss recognized:

•In September 2012, we sold our interest in certain Bakken properties. The proceeds, net of related expenses were $226.6 million.

•In September 2012, we sold certain oil and natural gas assets located in Brazos and Madison Counties, Texas, for approximately $44.1 million.

2012 Other

In conjunction with the acquisition and divestitures completed in the third quarter 2012, we took the necessary steps to secure like-kind exchange tax treatment for the transactions under Section 1031 of the Internal Revenue Code.

2013 Divestitures and Assets Held for Sale

In August 2013, we sold additional Bakken property interests. The proceeds, net of related expenses, were $57.1 million. In addition, we had other non-core asset sales with proceeds, net of related expenses, of $21.7 million for 2013. Proceeds from these dispositions reduced the net book value of the full cost pool with no gain or loss recognized.

During 2013, we sold five 2,000-3,000 horsepower drilling rigs to unaffiliated third-parties for a gain of $16.5 million. Four of our idle drilling rigs were classified as assets held for sale at December 31, 2013 and were sold to an unaffiliated third-party in the first quarter of 2014. The proceeds for the sale of these assets, less costs to sell, is expected to exceed the approximate $15.6 million net book value of the drilling rigs, both in the aggregate and for each drilling rig with an estimated gain of $10.4 million.

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Summary Of Significant Accounting Policies

12 Months Ended

Dec. 31, 2013

Accounting Policies [Abstract]

Summary Of Significant Accounting Policies

Principles of Consolidation.  The consolidated financial statements include the accounts of Unit Corporation and its subsidiaries. Our investment in limited partnerships is accounted for on the proportionate consolidation method, whereby our share of the partnerships’ assets, liabilities, revenues, and expenses are included in the appropriate classification in the accompanying consolidated financial statements.

Certain amounts in the accompanying consolidated financial statements for prior periods have been reclassified to conform to current year presentation. Certain financial statement captions were expanded or combined with no impact to consolidated net income or shareholders' equity.

Accounting Estimates.  The preparation of financial statements in conformity with generally accepted accounting principles (GAAP) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Drilling Contracts.  We recognize revenues and expenses generated from “daywork” drilling contracts as the services are performed, since we do not bear the risk of completion of the well. Under “footage” and “turnkey” contracts, we bear the risk of completion of the well; therefore, revenues and expenses are recognized when the well is substantially completed. Under this method, substantial completion is determined when the well bore reaches the negotiated depth as stated in the contract. The entire amount of a loss, if any, is recorded when the loss is determinable. The costs of uncompleted drilling contracts include expenses incurred to date on “footage” or “turnkey” contracts, which are still in process at the end of the period, and are included in other current assets. Typically, any one of these three types of contracts can be used for the drilling of one well which can take from 20 to 90 days. At December 31, 2013, all of our contracts were daywork contracts of which 23 were multi-well and had durations which ranged from six months to three years, 22 of which expire in 2014 and one expiring in 2015. These longer term contracts may contain a fixed rate for the duration of the contract or provide for the periodic renegotiation of the rate within a specific range from the existing rate.

Cash Equivalents and Book Overdrafts.  We include as cash equivalents all investments with maturities at date of purchase of three months or less which are readily convertible into known amounts of cash. Book overdrafts are checks that have been issued before the end of the period, but not presented to our bank for payment before the end of the period. There were no book overdrafts at December 31, 2013. At December 31, 2012, book overdrafts were $7.0 million and included in accounts payable.

Accounts Receivable.  Accounts receivable are carried on a gross basis, with no discounting, less an allowance for doubtful accounts. We estimate the allowance for doubtful accounts based on existing economic conditions, the financial condition of our customers, and the amount and age of past due accounts. Receivables are considered past due if full payment is not received by the contractual due date. Past due accounts are generally written off against the allowance for doubtful accounts only after all collection attempts have been unsuccessful.

Financial Instruments and Concentrations of Credit Risk and Non-performance Risk.  Financial instruments, which potentially subject us to concentrations of credit risk, consist primarily of trade receivables with a variety of oil and natural gas companies. We do not generally require collateral related to receivables. Our credit risk is considered to be limited due to the large number of customers comprising our customer base. Below are the third-party customers that accounted for more than 10% of our segment’s revenues:

	2013		2012		2011
Oil and Natural Gas:
Valero Energy Corporation	25	%	26	%	18	%
Sunoco Partners Marketing	8	%	8	%	10	%
Drilling:
QEP Resources, Inc.	18	%	15	%	22	%
Kodiak Oil and Gas Corp.	10	%	10	%	6	%
Mid-Stream:
ONEOK, Inc.	50	%	54	%	54	%
Tenaska Resources, LLC	16	%	7	%	1	%
Gavilon, LLC	—	%	10	%	19	%

We had a concentration of cash of $52.1 million and $40.4 million at December 31, 2013 and 2012, respectively with one bank.

The use of derivative transactions also involves the risk that the counterparties will be unable to meet the financial terms of the transactions. We considered this non-performance risk with regard to our counterparties and our own non-performance risk in our derivative valuation at December 31, 2013 and determined there was no material risk at that time. At December 31, 2013, the fair values of the net assets (liabilities) we had with each of the counterparties with respect to all of our commodity derivative transactions are listed in the table below:

	December 31, 2013
	(In millions)
Canadian Imperial Bank of Commerce	$	0.5
Scotiabank	(0.3		)
Bank of Montreal	(5.2		)
Total assets (liabilities)	$	(5.0	)

Property and Equipment.  Drilling equipment, natural gas gathering and processing equipment, transportation equipment, and other property and equipment are carried at cost. Renewals and improvements are capitalized while repairs and maintenance are expensed. Depreciation of drilling equipment is recorded using the units-of-production method based on estimated useful lives starting at 15 years , including a minimum provision of 20% of the active rate when the equipment is idle. We use the composite method of depreciation for drill pipe and collars and calculate the depreciation by footage actually drilled compared to total estimated remaining footage. Depreciation of other property and equipment is computed using the straight-line method over the estimated useful lives of the assets ranging from 3 to 15 years.

Realization of the carrying value of property and equipment is reviewed for possible impairment whenever events or changes in circumstances indicate that the carrying amount may not be recoverable. Assets are determined to be impaired if a forecast of undiscounted estimated future net operating cash flows directly related to the asset including disposal value if any, is less than the carrying amount of the asset. If any asset is determined to be impaired, the loss is measured as the amount by which the carrying amount of the asset exceeds its fair value. An estimate of fair value is based on the best information available, including prices for similar assets. Changes in such estimates could cause us to reduce the carrying value of property and equipment. In December 2012, our mid-stream segment had a $1.2 million write down of its Erick system. There was no volume from the wells connected to this system, the compressor and related surface equipment have been removed from this location and there is no future activity anticipated from this gathering system. No significant impairments were recorded in 2013 or 2011.

When property and equipment components are disposed of, the cost and the related accumulated depreciation are removed from the accounts and any resulting gain or loss is generally reflected in operations. For dispositions of drill pipe and drill collars, an average cost for the appropriate feet of drill pipe and drill collars is removed from the asset account and charged to accumulated depreciation and proceeds, if any, are credited to accumulated depreciation.

We record an asset and a liability equal to the present value of the expected future asset retirement obligation (ARO) associated with our oil and gas properties. The ARO asset is depreciated in a manner consistent with the depreciation of the underlying physical asset. We measure changes in the liability due to passage of time by accreting an interest charge. This amount is recognized as an increase in the carrying amount of the liability and as a corresponding accretion expense.

Capitalized Interest.  During 2013, 2012, and 2011, interest of approximately $33.7 million, $18.9 million, and $11.5 million, respectively, was capitalized based on the net book value associated with unproved properties not being amortized, the construction of additional drilling rigs, and the construction of gas gathering systems. Interest is being capitalized using a weighted average interest rate based on our outstanding borrowings.

Goodwill.  Goodwill represents the excess of the cost of acquisitions over the fair value of the net assets acquired. Goodwill is not amortized, but an impairment test is performed at least annually to determine whether the fair value has decreased and is performed additionally when events indicate an impairment may have occurred. Goodwill is all related to our contract drilling segment, and accordingly, the impairment test is generally based on the estimated discounted future net cash flows of our drilling segment, utilizing discount rates and other factors in determining the fair value of our drilling segment. Inputs in our estimated discounted future net cash flows include rig utilization, day rates, gross margin percentages, and terminal value (these are all considered level 3 inputs). No goodwill impairment was recorded for the years ended December 31, 2013, 2012, or 2011. There were no additions to goodwill in 2013, 2012, or 2011. Goodwill of $3.9 million is deductible for tax purposes.

Intangible Assets.  Intangible assets are capitalized and amortized over the estimated period benefited. Such amounts are reviewed for possible impairment whenever events or changes in circumstances indicate that the carrying amount may not be recoverable. No intangible asset impairment was recorded for the years ended December 31, 2013, 2012, or 2011. Amortization of $0.7 million, $1.2 million and $1.2 million was recorded in 2013, 2012, and 2011, respectively. Accumulated amortization for 2013 and 2012 was $18.0 million and $17.3 million, respectively. Our intangible assets became fully amortized in 2013, so no amortization is expected to be recorded in 2014.

Oil and Natural Gas Operations.  We account for our oil and natural gas exploration and development activities using the full cost method of accounting prescribed by the SEC. Accordingly, all productive and non-productive costs incurred in connection with the acquisition, exploration and development of our oil, NGLs, and natural gas reserves, including directly related overhead costs and related asset retirement costs, are capitalized and amortized on a units-of-production method based on proved oil and natural gas reserves. Directly related overhead costs of $21.5 million, $17.6 million, and $15.6 million were capitalized in 2013, 2012, and 2011, respectively. Independent petroleum engineers annually audit our internal evaluation of our reserves. The average rates used for depreciation, depletion, and amortization (DD&A) were $13.32, $14.70, and $15.06 per Boe in 2013, 2012, and 2011, respectively. The calculation of DD&A includes estimated future expenditures to be incurred in developing proved reserves and estimated dismantlement and abandonment costs, net of estimated salvage values. Our unproved properties totaling $545.6 million are excluded from the DD&A calculation.

No gains or losses are recognized on the sale, conveyance or other disposition of oil and natural gas properties unless a significant reserve amount to our total reserves is involved.

Revenue from the sale of oil and natural gas is recognized when title passes, net of royalties.

Under the full cost rules, at the end of each quarter, we review the carrying value of our oil and natural gas properties. The full cost ceiling is based principally on the estimated future discounted net cash flows from our oil and natural gas properties discounted at 10%. We use the unweighted arithmetic average of the commodity prices existing on the first day of each of the 12 months before the end of the reporting period to calculate discounted future revenues, unless prices were otherwise determined under contractual arrangements. In the event the unamortized cost of oil and natural gas properties being amortized exceeds the full cost ceiling, as defined by the SEC, the excess is charged to expense in the period during which such excess occurs. Once incurred, a write-down of oil and natural gas properties is not reversible.

For the quarter ended June 30, 2012, the 12-month average commodity prices, including the discounted value of our cash flow hedges, decreased significantly, resulting in a non-cash ceiling test write down of $115.9 million pre-tax ($72.1 million, net of tax). Our qualifying cash flow hedges used in the ceiling test determination at June 30, 2012, consisted of swaps and collars, covering production of 2.9 MMBoe in 2012 and 4.5 MMBoe in 2013. The effect of those hedges on the June 30, 2012 ceiling test was a $32.5 million pre-tax increase in the discounted net cash flows of our oil and natural gas properties.

For the quarter ended December 31, 2012, the 12-month average commodity prices, including the discounted value of our cash flow hedges, decreased further, resulting in an additional non-cash ceiling test write down of $167.7 million pre-tax ($104.4 million, net of tax). Our qualifying cash flow hedges used in the ceiling test determination at December 31, 2012, consisted of swaps and collars covering 6.9 MMBoe in 2013. The effect of those hedges on the December 31, 2012 ceiling test was a $29.8 million pre-tax increase in the discounted net cash flows of our oil and natural gas properties. Our oil and natural gas hedging is discussed in Note 13 of the Notes to our Consolidated Financial Statements.

At December 31, 2013, using the existing 12-month average commodity prices, we were not required to record a ceiling test write-down. All cash flow hedges expired at December 31, 2013 and did not effect the ceiling test determination.

If there are declines in the 12-month average prices, we may be required to record a write-down in future periods.

Our contract drilling segment provides drilling services for our exploration and production segment. Depending on their timing some of the drilling services performed on our properties are also deemed to be associated with the acquisition of an ownership interest in the property. Revenues and expenses for such services are eliminated in our income statement, with any profit recognized as a reduction in our investment in our oil and natural gas properties. The contracts for these services are issued under the same conditions and rates as the contracts entered into with unrelated third parties. We eliminated revenue of $64.3 million, $49.6 million, and $52.2 million for 2013, 2012, and 2011, respectively from our contract drilling segment and eliminated the associated operating expense of $46.9 million, $34.1 million, and $32.6 million during 2013, 2012, and 2011, respectively, yielding $17.4 million, $15.5 million, and $19.6 million during 2013, 2012, and 2011, respectively, as a reduction to the carrying value of our oil and natural gas properties.

Gas Gathering and Processing Revenue. Our gathering and processing segment recognizes revenue from the gathering and processing of natural gas and NGLs in the period the service is provided based on contractual terms.

Insurance.  We are self-insured for certain losses relating to workers’ compensation, control of well and employee medical benefits. Insured policies for other coverage contain deductibles or retentions per occurrence that range from $50,000 to $1.5 million. We have purchased stop-loss coverage in order to limit, to the extent feasible, per occurrence and aggregate exposure to certain types of claims. However, there is no assurance that the insurance coverage will adequately protect us against liability from all potential consequences. We have elected to use an ERISA governed occupational injury benefit plan to cover all Texas drilling operations in lieu of covering them under Texas Workers’ Compensation. If insurance coverage becomes more expensive, we may choose to self-insure, decrease our limits, raise our deductibles or any combination of these rather than pay higher premiums.

Hedging Activities.  All derivatives are recognized on the balance sheet and measured at fair value. Derivatives that are designated as a cash flow hedge are measured by the effectiveness of the hedge, or the degree that the gain (loss) for the hedging instrument offsets the loss (gain) on the hedged item, at each reporting period. The effective portion of the gain (loss) on the derivative instrument is recognized in other comprehensive income as a component of equity and subsequently reclassified into earnings when the forecasted transaction affects earnings. The ineffective portion of a derivative’s change in fair value is required to be recognized in earnings immediately. Derivatives that are not designated for hedge treatment are recorded at fair value with gains (losses) recognized in earnings in the period of change. In August 2012, we determined on a prospective basis, to enter into economic hedges without electing cash flow hedge accounting. Our cash flow hedges (that existed before August 2012) expired in December 2013.

We do not engage in derivative transactions for speculative purposes. We document our risk management strategy, and for the cash flow hedges, we tested the hedge effectiveness at the inception of and during the term of each hedge.

Limited Partnerships.  Unit Petroleum Company is a general partner in 16 oil and natural gas limited partnerships sold privately and publicly. Some of our officers, directors, and employees own the interests in most of these partnerships. We share in each partnership’s revenues and costs in accordance with formulas set out in each of the limited partnership agreement. The partnerships also reimburse us for certain administrative costs incurred on behalf of the partnerships.

Income Taxes.  Measurement of current and deferred income tax liabilities and assets is based on provisions of enacted tax law; the effects of future changes in tax laws or rates are not included in the measurement. Valuation allowances are established where necessary to reduce deferred tax assets to the amount expected to be realized. Income tax expense is the tax payable for the year and the change during that year in deferred tax assets and liabilities.

The accounting for uncertainty in income taxes prescribes a recognition threshold and measurement attribute for the financial statement recognition and measurement of a tax position taken or expected to be taken in a return. Guidance is also provided on de-recognition, classification, interest and penalties, accounting in interim periods, disclosure, and transition. We have no unrecognized tax benefits and we do not expect any significant changes in unrecognized tax benefits in the next twelve months.

Natural Gas Balancing.  We use the sales method for recording natural gas sales. This method allows for recognition of revenue, which may be more or less than its share of pro-rata production from certain wells. We estimate our December 31, 2013 balancing position to be approximately 5.2 Bcf on under-produced properties and approximately 4.5 Bcf on over-produced properties. We have recorded a receivable of $2.0 million on certain wells where we estimate that insufficient reserves are available for us to recover the under-production from future production volumes. We have also recorded a liability of $3.8 million on certain properties where we believe there are insufficient reserves available to allow the under-produced owners to recover their under-production from future production volumes. Our policy is to expense the pro-rata share of lease operating costs from all wells as incurred. Such expenses relating to the balancing position on wells in which we have imbalances are not material.

Employee and Director Stock Based Compensation.  We recognize in our financial statements the cost of employee services received in exchange for awards of equity instruments based on the grant date fair value of those awards. The amount of our equity compensation cost relating to employees directly involved in exploration activities of our oil and natural gas segment is capitalized to our oil and natural gas properties. Amounts not capitalized to our oil and natural gas properties are recognized in general and administrative expense and operating costs of our business segments. We utilize the Black-Scholes option pricing model to measure the fair value of stock options and stock appreciation rights (SARs). The value of our restricted stock grants is based on the closing stock price on the date of the grants.

Impact of Financial Accounting Pronouncements.

Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists. In July 2013, ASU 2013-11 was issued because GAAP does not include explicit guidance on the financial statement presentation of an unrecognized tax benefit when a net operating loss carryforward, a similar tax loss, or a tax credit carryforward exists. The amendment provides explicit guidance on the financial statement presentation of an unrecognized tax benefit when a net operating loss carryforward, a similar tax loss, or a tax credit carryforward exists. The amendments in this Update are effective for fiscal years, and interim periods within those years, beginning after December 15, 2013. Early adoption is permitted.  The amendments should be applied prospectively to all unrecognized tax benefits that exist at the effective date. Retrospective application is permitted. We anticipate there will be no effect on our financial position or results of operations when adopted.

Inclusion of the Fed Funds Effective Swap Rate (or Overnight Index Swap Rate) as a Benchmark Interest Rate for Hedge Accounting Purposes. The FASB has issued ASU 2013-10, the amendments in this update permit the Fed Funds Effective Swap Rate (OIS) to be used as a U.S. benchmark interest rate for hedge accounting purposes under Topic 815, in addition to U.S. Treasury and LIBOR. The amendments also remove the restriction on using different benchmark rates for similar hedges. The amendments are effective prospectively for qualifying new or redesignated hedging relationships entered into on or after July 17, 2013. We do not have any interest rate hedges at this time.

Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income. In February 2013, the FASB issued ASU 2013-02 to address the presentation of comprehensive income related to ASU 2011-05. The standard requires that companies present, either in a single note or parenthetically on the face of the financial statements, the effect of significant amounts reclassified from each component of accumulated other comprehensive income based on its source (e.g., the release due to cash flow hedges from interest rate contracts) and the income statement line items affected by the reclassification (e.g., interest income or interest expense). The amendments are effective for fiscal years, and interim periods within those years, beginning after December 15, 2012. We chose to present the information in a single note (Note 15 of the Notes to our Consolidated Financial Statements).

Clarifying the Scope of Disclosures about Offsetting Assets and Liabilities. In January 2013, the FASB issued ASU 2013-01 to limit the scope of balance sheet offsetting disclosures contained in previously issued guidance in ASU 2011-11—Disclosures about Offsetting Assets and Liabilities. Specifically, ASU 2011-11 applies only to derivatives, repurchase agreements and reverse purchase agreements, and securities borrowing and securities lending transactions that are either offset in accordance with specific criteria contained in the FASB Accounting Standards or subject to a master netting arrangement or similar agreement.

Unlike IFRS, GAAP allows companies the option to present net in their balance sheets derivatives that are subject to a legally enforceable netting arrangement with the same party where rights of set-off are only available in the event of default or bankruptcy. To address these differences between IFRS and GAAP, the FASB and the IASB (the Boards) issued an exposure draft that proposed new criteria for netting that were narrower than the current conditions currently in GAAP. Nevertheless, in response to feedback from their respective stakeholders, the Boards decided to retain their existing offsetting models. Instead, the Boards have issued common disclosure requirements related to offsetting arrangements to allow investors to better compare financial statements prepared in accordance with IFRS or GAAP. The amendments in this ASU require an entity to disclose information about offsetting and related arrangements to enable users of its financial statements to understand the effect of those arrangements on its financial position. An entity is required to apply the amendments for annual reporting periods beginning on or after January 1, 2013, and interim periods within those annual periods. An entity should provide the disclosures required by those amendments retrospectively for all comparative periods presented. Derivatives subject to a master netting agreement are the only transactions in this accounting standard that affect us. We provide the effect of netting on our financial position in Note 14 of the Notes to our Consolidated Financial Statements.

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Fair Value Measurements

12 Months Ended

Dec. 31, 2013

Fair Value Disclosures [Abstract]

Fair Value Measurements

Fair value is defined as the amount that would be received from the sale of an asset or paid for the transfer of a liability in an orderly transaction between market participants (in either case, an exit price). To estimate an exit price, a three-level hierarchy is used prioritizing the valuation techniques used to measure fair value into three levels with the highest priority given to Level 1 and the lowest priority given to Level 3. The levels are summarized as follows:

• Level 1—unadjusted quoted prices in active markets for identical assets and liabilities.

• Level 2—significant observable pricing inputs other than quoted prices included within level 1 that are either directly or indirectly observable as of the reporting date. Essentially, inputs (variables used in the pricing models) that are derived principally from or corroborated by observable market data.

• Level 3—generally unobservable inputs which are developed based on the best information available and may include our own internal data.

The inputs available to us determine the valuation technique we use to measure the fair values of our financial instruments.

The following tables set forth our recurring fair value measurements:

	December 31, 2013
	Level 2			Level 3			Effect of Netting			Total
	(In thousands)
Financial assets (liabilities):
Commodity derivatives:
Assets	$	1,978		$	20		$	(1,483	)	$	515
Liabilities	(4,429		)	(2,615		)	1,483			(5,561		)
	$	(2,451	)	$	(2,595	)	$	—		$	(5,046	)

	December 31, 2012
	Level 2			Level 3			Effect of Netting			Total
	(In thousands)
Financial assets (liabilities):
Commodity derivatives:
Assets	$	18,555		$	—		$	(2,003	)	$	16,552
Liabilities	(3,918		)	(595		)	2,003			(2,510		)
	$	14,637		$	(595	)	$	—		$	14,042

All of our counterparties are subject to master netting arrangements. If a legal right of set-off exists, we net the value of the derivative transactions we have with the same counterparty. We are not required to post any cash collateral with our counterparties and no collateral has been posted as of December 31, 2013.

Certain natural gas fixed price swaps were transferred from Level 3 to Level 2 as of March 31, 2012 because of improvements in our ability to obtain and corroborate observable significant inputs to assess the fair value. Our policy is to recognize transfers either in or out of fair value hierarchy levels as of the end of the quarterly reporting period in which the event or change in circumstances causing the transfer occurred.

The following methods and assumptions were used to estimate the fair values of the assets and liabilities in the table above.

Level 2 Fair Value Measurements

Commodity Derivatives.    We measure the fair values of our crude oil and natural gas swaps using estimated internal discounted cash flow calculations based on the NYMEX futures index.

Level 3 Fair Value Measurements

Commodity Derivatives.    The fair values of our natural gas and crude oil collars are estimated using internal discounted cash flow calculations based on forward price curves, quotes obtained from brokers for contracts with similar terms, or quotes obtained from counterparties to the agreements.

The following tables are reconciliations of our level 3 fair value measurements:

	Net Derivatives
	For the Year Ended,
	December 31, 2013			December 31, 2012
	(In thousands)
Beginning of period	$	(595	)	$	33,615
Total gains or losses:
Included in earnings (1)	(2,637		)	24,484
Included in other comprehensive income (loss)	—			(11,641		)
Settlements	637			(25,129		)
Transfers out of Level 3 into Level 2	—			(21,924		)
End of period	$	(2,595	)	$	(595	)
Total gains (losses) for the period included in earnings attributable to the change in unrealized loss relating to assets still held at end of period	$	(2,000	)	$	(645	)

_________________________

(1) Commodity sales collars are reported in the consolidated statements of income in oil and gas revenues (for cash flow hedges), and gain (loss) on derivatives not designated as hedges and hedge ineffectiveness, net, respectively.

The following table provides quantitative information about our Level 3 unobservable inputs at December 31, 2013:

Commodity (1)	Fair Value			Valuation Technique	Unobservable Input	Range
	(In thousands)
Oil collars	$	(2,246	)	Discounted cash flow	Forward commodity price curve	$0.20-$5.29
Natural gas collar	$	(349	)	Discounted cash flow	Forward commodity price curve	$0.00-$0.39

 _________________________

(1) The commodity contracts detailed in this category include non-exchange-traded natural gas and crude oil collars that are valued based on NYMEX. The forward pricing range represents the low and high price expected to be received within the settlement period.

Based on our valuation at December 31, 2013, we determined that the non-performance risk with regard to our counterparties was immaterial.

Fair Value of Other Financial Instruments

The following disclosure of the estimated fair value of financial instruments is made in accordance with accounting guidance for financial instruments. We have determined the estimated fair values by using available market information and valuation methodologies. Considerable judgment is required in interpreting market data to develop the estimates of fair value. The use of different market assumptions or valuation methodologies may have a material effect on the estimated fair value amounts.

At December 31, 2013, the carrying values on the consolidated balance sheets for cash and cash equivalents (classified as Level 1), accounts receivable, accounts payable, other current assets, and current liabilities approximate their fair value because of their short term nature.

Based on the borrowing rates currently available to us for credit agreement debt with similar terms and maturities and also considering the risk of our non-performance, long-term debt under our credit agreement at December 31, 2013 approximates its fair value. This debt would be classified as Level 2.

The carrying amounts of long-term debt, net of unamortized discount, associated with the Notes reported in the consolidated balance sheets at December 31, 2013 and December 31, 2012 were $645.7 million and $645.3 million, respectively. We estimate the fair value of these Notes using quoted marked prices at December 31, 2013 and December 31, 2012 were $688.2 million and $687.7 million, respectively. These Notes would be classified as Level 2.

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Transactions With Related Parties

12 Months Ended

Dec. 31, 2013

Related Party Transactions [Abstract]

Transactions With Related Parties

Unit Petroleum Company serves as the general partner of 16 oil and gas limited partnerships. Three were formed for investment by third parties and 13 (the employee partnerships) were formed to allow certain of our qualified employees and our directors to participate in Unit Petroleum’s oil and gas exploration and production operations. The partnerships for the third party investments were formed in 1984 and 1986. Employee partnerships have been formed for each year beginning with 1984 and ending with 2011. Interests in the employee partnerships were offered to the employees of Unit and its subsidiaries whose annual base compensation was at least a specified amount ($36,000 for 2011) and to the directors of Unit.

The employee partnerships formed in 1984 through 1990 were consolidated into a single consolidating partnership in 1993 and the employee partnerships formed in 1991 through 1999 were also consolidated into the consolidating partnership in 2002. The consolidation of the 1991 through the 1999 employee partnerships was done by the general partners under the authority contained in the respective partnership agreements and did not involve any vote, consent or approval by the limited partners. The employee partnerships have each had a set percentage (ranging from 1% to 15%) of our interest in most of the oil and natural gas wells we drill or acquire for our own account during the particular year for which the partnership was formed. The total interest the employees have in our oil and natural gas wells by participating in these partnerships does not exceed one percent.

Amounts received in the years ended December 31, from both public and private Partnerships for which Unit is a general partner are as follows:

	2013		2012		2011
	(In thousands)
Contract drilling	$	16	$	246	$	352
Well supervision and other fees	$	470	$	434	$	396
General and administrative expense reimbursement	$	36	$	39	$	610

Related party transactions for contract drilling and well supervision fees are the related party’s share of such costs. These costs are billed to related parties on the same basis as billings to unrelated parties for such services. General and administrative reimbursements are both direct general and administrative expense incurred on the related party’s behalf and indirect expenses allocated to the related parties. Such allocations are based on the related party’s level of activity and are considered by management to be reasonable.

One of our directors, G. Bailey Peyton IV, also serves as the President and a significant investor in Upland Resources, L.L.C., a small independent oil and natural gas exploration company, and as Manager of Peyton Royalties, LP, a family-controlled limited partnership that owns royalty rights in wells in the Texas and Oklahoma Panhandles. In the ordinary course of business, there were no wells drilled for Upland Resources, L.L.C. during 2013 or 2011 and the Company drilled three wells during 2012, under its usual standard dayrate contracts, in which Upland Resources, L.L.C. was a participant, for which the Company received payments of approximately $1.6 million from Upland Resources, L.L.C. The Company also paid royalties during 2013 and 2012, primarily due to its status as successor in interest to prior transactions and as operator of the wells involved and, in some cases, as lessee, with respect to certain wells in which Mr. Peyton, members of Mr. Peyton's family, and Peyton Royalties, LP have an interest. Such payments totaled approximately $1.4 million, $1.2 million, and $0.7 million during 2013, 2012, and 2011, respectively. Our Audit Committee and the board, in accordance with the Policy, have determined that these arrangements are in the best interest of the Company.

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Fair Value Measurements (Schedule Of Quantitative Information About Unobservable Inputs) (Details) (Level 3 [Member], Collar [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013
Natural Gas [Member]
Derivative assets, Fair Value	$ (349)	[1]
Derivatives assets, Valuation Technique(s)	Discounted cash flow	[1]
Unobservable Input	Forward commodity price curve	[1]
Natural Gas [Member] | Minimum [Member]
Forward commodity price curve	0
Natural Gas [Member] | Maximum [Member]
Forward commodity price curve	0.39
Crude Oil [Member]
Derivative assets, Fair Value	$ (2,246)	[1]
Derivatives assets, Valuation Technique(s)	Discounted cash flow	[1]
Unobservable Input	Forward commodity price curve	[1]
Crude Oil [Member] | Minimum [Member]
Forward commodity price curve	0.20
Crude Oil [Member] | Maximum [Member]
Forward commodity price curve	5.29060

[1] The commodity contracts detailed in this category include non-exchange-traded natural gas and crude oil collars that are valued based on NYMEX. The forward pricing range represents the low and high price expected to be received within the settlement period.

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Long-Term Debt And Other Long-Term Liabilities

12 Months Ended

Dec. 31, 2013

Long-term debt and other long-term liabilites [Abstract]

Long-term Debt

Long-Term Debt

Long-term debt consisted of the following as of December 31:

	2013		2012
	(In thousands)
Credit agreement with an average interest rates of 2.9% at December 31, 2012	$	—	$	71,100
6.625% senior subordinated notes due 2021, net of unamortized discount of $4.3 million and $4.7 million at December 31, 2013 and 2012, respectively	645,696		645,259
Total long-term debt	$	645,696	$	716,359

Credit Agreement.    Under our Senior Credit Agreement (credit agreement), the amount available to be borrowed is the lesser of the amount we elect (from time to time) as the commitment amount ($500.0 million) or the value of the borrowing base as determined by the lenders ($800.0 million), but in either event not to exceed the maximum credit agreement amount of $900.0 million. We are charged a commitment fee ranging from 0.375 to 0.50 of 1% on the amount available but not borrowed. The rate varies based on the amount borrowed as a percentage of the amount of the total borrowing base. The credit agreement matures as of September 13, 2016. In connection with this new amendment, we paid $1.5 million in origination, agency, syndication, and other related fees when the credit agreement was amended on September 5, 2012. We are amortizing these fees over the life of the credit agreement.

The amount of the borrowing base, which is subject to redetermination by the lenders on April 1st and October 1st of each year, is based primarily on a percentage of the discounted future value of our oil and natural gas reserves. There was no change to the borrowing base as of the October 1, 2013 redetermination. We or the lenders may request a onetime special redetermination of the borrowing base between each scheduled redetermination. In addition, we may request a redetermination following the completion of an acquisition that meets the requirements set forth in the credit agreement.

At our election, any part of the outstanding debt under the credit agreement may be fixed at a London Interbank Offered Rate (LIBOR). LIBOR interest is computed as the sum of the LIBOR base for the applicable term plus 1.75% to 2.50% depending on the level of debt as a percentage of the borrowing base and is payable at the end of each term, or every 90 days, whichever is less. Borrowings not under LIBOR bear interest at the Prime Rate, which cannot be less than LIBOR plus 1.00%. Interest is payable at the end of each month, and the principal may be repaid in whole or in part at anytime, without a premium or penalty. At December 31, 2013, we had no outstanding borrowings under our credit agreement.

We can use borrowings for financing general working capital requirements for (a) exploration, development, production and acquisition of oil and gas properties, (b) acquisitions and operation of mid-stream assets, (c) issuance of standby letters of credit, (d) contract drilling services, and (e) general corporate purposes.

The credit agreement prohibits, among other things:

• the payment of dividends (other than stock dividends) during any fiscal year in excess of 30% of our consolidated net income for the preceding fiscal year;

• the incurrence of additional debt with certain limited exceptions; and

• the creation or existence of mortgages or liens, other than those in the ordinary course of business, on any of our properties, except in favor of our lenders.

The credit agreement also requires that we have at the end of each quarter:

• a current ratio (as defined in the credit agreement) of not less than 1 to 1; and

• a leverage ratio of funded debt to consolidated EBITDA (as defined in the credit agreement) for the most recently ended rolling four fiscal quarters of no greater than 4 to 1.

As of December 31, 2013, we were in compliance with the covenants contained in the credit agreement.

6.625% Senior Subordinated Notes.    On May 18, 2011, we completed the sale of $250.0 million aggregate principal amount of registered senior subordinated notes due 2021 (the 2011 Notes) which bear interest at a rate of 6.625% per year. The Notes were issued at par and mature on May 15, 2021. We received net proceeds of approximately $244.0 million after deducting fees of approximately $6.0 million. Those fees are being amortized as deferred financing costs over the life of the Notes. We used the net proceeds to repay outstanding borrowings under our credit agreement, which was $220.3 million on May 18, 2011. The remaining proceeds were used for general working capital purposes.

On July 24, 2012, we completed the sale of $400.0 million aggregate principal amount of unregistered senior subordinated notes (the 2012 Notes) due May 15, 2021, which will bear interest at a rate of 6.625% per year. The 2012 Notes were sold at 98.75% of par plus accrued interest from May 15, 2012. We used the net proceeds from the offering to partially finance the acquisition of oil and natural gas properties from Noble. We incurred $8.7 million of fees that are being amortized as debt issuance cost over the life of the 2012 Notes. 

On November 13, 2012, we registered with the SEC on Form S-4 an offer to exchange the 2012 Notes for additional notes with materially identical terms to our existing 2011 Notes, which were registered under the Securities Act. On January 7, 2013, the exchange of the 2012 Notes was completed. The notes issued in exchange for the 2012 Notes are now registered and treated as a single series of debt securities with the 2011 Notes, bringing the total to $650.0 million aggregate principal amount of 6.625% senior subordinated notes (the Notes). The interest is payable semi-annually (in arrears) on May 15 and November 15 of each year, and the Notes will mature on May 15, 2021.

The Notes are guaranteed by our 100% owned domestic direct and indirect subsidiaries (the Guarantors). Unit, as the parent company, has no independent assets or operations. The guarantees registered under the registration statement are full and unconditional and joint and several, subject to certain automatic customary releases, including sale, disposition, or transfer of the capital stock or substantially all of the assets of a subsidiary guarantor, exercise of legal defeasance option or covenant defeasance option, and designation of a subsidiary guarantor as unrestricted in accordance with the Indenture. Any subsidiaries of Unit other than the Guarantors are minor. There are no significant restrictions on the ability of Unit to receive funds from its subsidiaries through dividends, loans, advances or otherwise.

The Notes are subject to an Indenture dated as of May 18, 2011, between us and Wilmington Trust, National Association (successor to Wilmington Trust FSB), as Trustee (the Trustee), as supplemented by the First Supplemental Indenture thereto dated as of May 18, 2011, between us, the Guarantors, and the Trustee, and as further supplemented by that the Second Supplemental Indenture thereto dated as of January 7, 2013, between us, the Guarantors and the Trustee, establishing the terms and providing for the issuance of the Notes (as supplemented, the 2011 Indenture). The discussion of the Notes in this report is qualified by and subject to the actual terms of the 2011 Indenture.

On and after May 15, 2016, we may redeem all or, from time to time, a part of the Notes at certain redemption prices, plus accrued and unpaid interest. Before May 15, 2014, we may on any one or more occasions redeem up to 35% of the original principal amount of the Notes with the net cash proceeds of one or more equity offerings at a redemption price of 106.625% of the principal amount, plus accrued and unpaid interest, if any, to the redemption date, provided that at least 65% of the original principal amount of the Notes remains outstanding after each redemption. In addition, at any time before May 15, 2016, we may redeem the Notes, in whole or in part, at a redemption price equal to 100% of the principal amount plus a “make whole” premium, plus accrued and unpaid interest, if any, to the redemption date. If a “change of control” occurs, subject to certain conditions, we must offer to repurchase from each holder all or any part of that holder’s Notes at a purchase price in cash equal to 101% of the principal amount of the Notes plus accrued and unpaid interest, if any, to the date of purchase. The Indenture contains customary events of default. The Indenture contains covenants that, among other things, limit our ability and the ability of certain of our subsidiaries to incur or guarantee additional indebtedness; pay dividends on our capital stock or redeem capital stock or subordinated indebtedness; transfer or sell assets; make investments; incur liens; enter into transactions with our affiliates; and merge or consolidate with other companies. We were in compliance with all covenants of the Notes as of December 31, 2013.

Other Long-Term Liabilities

Other long-term liabilities consisted of the following as of December 31:

	2013		2012
	(In thousands)
ARO liability	$	133,657	$	146,159
Workers’ compensation	20,041		18,517
Separation benefit plans	9,382		7,972
Gas balancing liability	3,775		3,838
Deferred compensation plan	3,589		2,779
	170,444		179,265
Less current portion	12,113		12,282
Total other long-term liabilities	$	158,331	$	166,983

Estimated annual principal payments under the terms of debt and other long-term liabilities from 2014 through 2018 are $12.1 million, $2.8 million, $40.4 million, $4.2 million, and $3.5 million, respectively.

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Income Taxes (Schedule Of Total Provision For Income Taxes) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]
Current taxes, Federal	$ 15,845	$ 2,084	$ (3,159)
Current taxes, State	146	(1,388)	743
Current taxes	15,991	696	(2,416)
Deferred taxes, Federal	87,839	13,768	109,363
Deferred taxes, State	12,893	1,762	16,188
Deferred taxes	100,732	15,530	125,551
Total provision	$ 116,723	$ 16,226	$ 123,135

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Earnings Per Share

12 Months Ended

Dec. 31, 2013

Earnings Per Share [Abstract]

Earnings Per Share

The following data shows the amounts used in computing earnings per share:

	Income (Numerator)		Weighted Shares (Denominator)	Per-Share Amount
	(In thousands except per share amounts)
For the year ended December 31, 2013:
Basic earnings per common share	$	184,746	48,218	$	3.83
Effect of dilutive stock options, restricted stock, and SARs	—		354	(0.03		)
Diluted earnings per common share	$	184,746	48,572	$	3.80
For the year ended December 31, 2012:
Basic earnings per common share	$	23,176	47,909	$	0.48
Effect of dilutive stock options, restricted stock, and SARs	—		245	—
Diluted earnings per common share	$	23,176	48,154	$	0.48
For the year ended December 31, 2011:
Basic earnings per common share	$	195,867	47,658	$	4.11
Effect of dilutive stock options, restricted stock, and SARs	—		293	(0.03		)
Diluted earnings per common share	$	195,867	47,951	$	4.08

The following options and their average exercise prices were not included in the computation of diluted earnings per share because the option exercise prices were greater than the average market price of our common stock for the years ended December 31:

	2013		2012		2011
Options and SARs	149,665		250,901		105,000
Average exercise price	$	58.41	$	52.72	$	61.24

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Accrued Liabilities

12 Months Ended

Dec. 31, 2013

Accrued Liabilities [Abstract]

Accrued Liabilities

Accrued liabilities consisted of the following as of December 31:

	2013		2012
	(In thousands)
Employee costs	$	27,633	$	24,632
Lease operating expenses	16,073		10,903
Interest payable	6,504		6,568
Deposits on assets held for sale	3,750		—
Taxes	2,313		7,308
Hedge settlements	416		160
Other	7,674		4,527
Total accrued liabilities	$	64,363	$	54,098

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Asset Retirement Obligations

12 Months Ended

Dec. 31, 2013

Asset Retirement Obligation Disclosure [Abstract]

Asset Retirement Obligations

We are required to record the estimated fair value of the liabilities relating to the future retirement of our long-lived assets (AROs). Our oil and natural gas wells are plugged and abandoned when the oil and natural gas reserves in those wells are depleted or the wells are no longer able to produce. The plugging and abandonment liability for a well is recorded in the period in which the obligation is incurred (at the time the well is drilled or acquired). None of our assets are restricted for purposes of settling these AROs. All of our AROs relate to plugging costs associated with our oil and gas wells.

The following table shows certain information about our AROs for the periods indicated:

	2013			2012
	(In thousands)
ARO liability, January 1:	$	146,159		$	96,446
Accretion of discount	5,450			4,615
Liability incurred	4,857			56,650			(1)
Liability settled	(4,751		)	(2,788		)
Liability sold	(2,622		)	(1,258		)
Revision of estimates (2)	(15,436		)	(7,506		)
ARO liability, December 31:	133,657			146,159
Less current portion	2,954			2,953
Total long-term ARO liability	$	130,703		$	143,206

_________________________

(1) The liability incurred increased $46.7 million related to the Noble properties acquired in September 2012.

(2) Plugging liability estimates were revised in both 2013 and 2012 for updates in the cost of services used to plug wells over the preceding year. We had various upward and downward adjustments as well as changes in estimated timing of cash flows.

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Transactions With Related Parties Transactions With Related Parties (Schedule of Amount Received in Public and Private Partnerships) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Related Party Transaction [Line Items]
Contract Drilling Fees	$ 16	$ 246	$ 352
Well Supervision And Other Fees	470	434	396
General And Administrative Expense Reimbursement	$ 36	$ 39	$ 610

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Fair Value Measurements (Narrative) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
6.625% senior subordinated notes due 2021, net of unamortized discount of $4.3 million and $4.7 million at December 31, 2013 and 2012, respectively	$ 645,696,000	$ 645,259,000
Estimated fair value of long-term debt	$ 688,200,000	$ 687,700,000

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Shareholder Rights Plan (Details) (USD $)	12 Months Ended
	Dec. 31, 2013 D
Shareholder Rights Plan [Abstract]
Right of common stock	one
Percentage of fair value of common stock that can be acquired	50.00%
Rights become exercisable period, in days	10
Minimum percentage of common stock that should be acquired	15.00%
Redemption price per share	$ 0.01
Shareholder rights plan expiration date	May 19, 2015

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Employee Benefit Plans (Details) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended										12 Months Ended
	Dec. 31, 2013 D Y	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013 Employee Thrift Plan [Member]	Dec. 31, 2012 Employee Thrift Plan [Member]	Dec. 31, 2011 Employee Thrift Plan [Member]	Dec. 31, 2013 Salary Deferral Plan [Member]	Dec. 31, 2012 Salary Deferral Plan [Member]	Jan. 01, 1997 Separation Plan [Member] Y week	May 05, 2004 Special Separation Benefit Plan [Member] Y	Dec. 31, 2013 Change Of Control Contracts [Member] Y	Dec. 31, 2013 Plan 401k [Member] Y
Defined Benefit Plan Disclosure [Line Items]
Contribution of shares, common stock				111,995	95,598	71,742
Recognized stock compensation expense	$ 16.1	$ 11.4	$ 10.0	$ 6.0	$ 5.5	$ 4.3
Liability recorded under deferral plan							3.6	2.8
Service period, years									20	20
Maximum period benefit, weeks									104
Age limit										65
Separation benefit plans expense	$ 2.4	$ 2.2	$ 1.9
Employee contract period, years											3
Employment contract period extension, years	1
Grace period following the first anniversary	30
Multiple for determination compensation											2.9
Additional period for 401k, years												3

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Supplemental Oil And Gas Disclosures (Schedule Of The Oil And Natural Gas Property Costs Not Being Amortized) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Supplemental Oil and Gas Disclosures [Abstract]
Unproved properties acquired and wells in progress	$ 92,929	$ 412,623	$ 32,492	$ 7,544
Unproved properties acquired, total	$ 545,588

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Accrued Liabilities (Tables)

12 Months Ended

Dec. 31, 2013

Accrued Liabilities [Abstract]

Accrued Liabilities

Accrued liabilities consisted of the following as of December 31:

	2013		2012
	(In thousands)
Employee costs	$	27,633	$	24,632
Lease operating expenses	16,073		10,903
Interest payable	6,504		6,568
Deposits on assets held for sale	3,750		—
Taxes	2,313		7,308
Hedge settlements	416		160
Other	7,674		4,527
Total accrued liabilities	$	64,363	$	54,098

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Acquisitions and Divestitures - Narrative (Details) (USD $)	3 Months Ended								12 Months Ended					1 Months Ended			3 Months Ended				1 Months Ended
	Dec. 31, 2013 rig	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013 rig	Dec. 31, 2012	Dec. 31, 2011	Nov. 13, 2012	May 18, 2011	Aug. 31, 2013 Bakken [Member]	Sep. 30, 2012 Bakken [Member]	Sep. 30, 2012 Brazos and Madison Counties [Member]	Dec. 31, 2012 Noble Energy, Inc. [Member]	Jul. 24, 2012 Noble Energy, Inc. [Member]	Sep. 17, 2012 Noble Energy, Inc. [Member] Granite Wash [Member] locations acre	Sep. 17, 2012 Noble Energy, Inc. [Member] Other Plays [Member] acre	Jul. 20, 2011 Oklahoma And Lipscomb [Member] acre Unit	Aug. 31, 2011 Oklahoma Arkoma Woodford And Hartshorne Coal [Member] locations	Aug. 31, 2012 Oklahoma Arkoma Woodford And Hartshorne Coal [Member] acre	Sep. 17, 2012 Western Oklahoma and Texas Panhandle [Member] Noble Energy, Inc. [Member] systems MMBoe acre
Business Combination, Description [Abstract]
Payments to acquire oil and gas property																					$ 12,300,000	$ 30,500,000
Acquired operated wells																					30
Acquired non-operated wells																					59
Purchase price allocation for proved properties																					8,400,000
Unproved properties																					3,900,000
Acres acquired held by production																					12,000
Operating and non-operating number of wells																						500
Oil And Gas Developed And Undeveloped Acreage Net																							55,000
Percentage of acre held for production																						96.00%
Land acquired (in acres)																			24,000	59,000				83,000
Total consideration given																								592,627,000
Proved developed reserves (BOE)																								44,000,000
Number of horizontal driling locations included in the land acquired																			600
Acquired land with existing production capacity, percent																				95.00%
Natural gas gathering systems received as part of acquisition																								4
Aggregate principal amount												650,000,000	250,000,000					400,000,000
Revenues	359,121,000	333,776,000	340,421,000	318,532,000	331,582,000	321,790,000	327,785,000	333,966,000	1,351,850,000	1,315,123,000	1,207,503,000						21,400,000
Net income	51,301,000	34,232,000	59,007,000	40,206,000	(56,547,000)	46,586,000	(19,302,000)	52,439,000	184,746,000	23,176,000	195,867,000						800,000
Asset Divestiture [Abstract]
Proceeds from divestiture of assets									21,700,000					57,100,000	226,600,000	44,100,000
Number of rigs sold									5
Gain (Loss) on Disposition of Property Plant Equipment									16,500,000
Number of rigs held for sale	4								4
Assets held for sale	15,621,000				0				15,621,000	0
Estimated gain (loss) on sale of assets									$ 10,400,000

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Stock-Based Compensation

12 Months Ended

Dec. 31, 2013

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Stock-Based Compensation

For restricted stock awards and stock options, we had:

	2013		2012		2011
	(In millions)
Recognized stock compensation expense	$	16.1	$	11.4	$	10.0
Capitalized stock compensation cost for our oil and natural gas properties	3.5		2.7		2.5
Tax benefit on stock based compensation	6.2		4.5		3.9

The remaining unrecognized compensation cost related to unvested awards at December 31, 2013 is approximately $14.2 million with $2.4 million of this amount anticipated to be capitalized. The weighted average period of time over which this cost will be recognized is 0.8 years.

At our annual meeting of stockholders held on May 2, 2012, our stockholders approved the Unit Corporation Stock and Incentive Compensation Plan Amended and Restated May 2, 2012 (the amended plan).   The amended plan allows us to grant stock-based and cash-based compensation to our employees (including employees of subsidiaries) as well as non-employee directors.  The amended plan succeeds the Non-employee Directors' 2000 Stock Option Plan (the option plan), and no new awards will be issued under the option plan.

The amended plan allows for the issuance of 3.3 million shares of common stock with 2.0 million shares being the maximum number of shares that can be issued as “incentive stock options.” Awards under this plan may be granted in any one or a combination of the following:

• incentive stock options under Section 422 of the Internal Revenue Code;

• non-qualified stock options;

• performance shares;

• performance units;

• restricted stock;

• restricted stock units;

• stock appreciation rights;

• cash based awards; and

• other stock-based awards.

This plan also contains various limits as to the amount of awards that can be given to an employee in any fiscal year. All awards are generally subject to the minimum vesting periods, as determined by our Compensation Committee and included in the award agreement.

The table below shows the estimates of the fair value of stock options granted to our non-employee directors under the option plan in 2011 using the Black-Scholes model and applying the estimated values also presented in the table:

	2011
Options granted	31,500
Estimated fair value (in millions)	$	0.7
Estimate of stock volatility	0.48
Estimated dividend yield	—		%
Risk free interest rate	2		%
Expected life range based on prior experience (in years)	5
Forfeiture rate	—		%

Expected volatilities are based on the historical volatility of our stock. We use historical data to estimate option exercise and termination rates within the model and aggregate groups that have similar historical exercise behavior for valuation purposes. To date, we have not paid dividends on our stock. The risk free interest rate is computed from the United States Treasury Strips rate using the term over which it is anticipated the grant will be exercised.

SARs

Activity pertaining to SARs granted under the Unit Corporation Stock and Incentive Compensation Plan is as follows:

	Number of Shares	Weighted Average Grant Date Price
Outstanding at January 1, 2011	145,901	$	46.59
Granted	—	—
Exercised	—	—
Forfeited	—	—
Outstanding at December 31, 2011	145,901	46.59
Granted	—	—
Exercised	—	—
Forfeited	—	—
Outstanding at December 31, 2012	145,901	46.59
Granted	—	—
Exercised	—	—
Forfeited	—	—
Outstanding at December 31, 2013	145,901	$	46.59

There were no SARs granted in 2013, 2012, or 2011. The SARs expire after 10 years from the date of the grant. In 2013 and 2012, no shares vested. In 2011, 33,745 shares vested. The aggregate intrinsic value of the 145,901 shares outstanding at December 31, 2013 was $0.7 million with a weighted average remaining contractual term of 3.6 years.

Restricted Stock

Activity pertaining to restricted stock awards granted under the amended plan is as follows:

Employees	Number of Shares		Weighted Average Grant Date Price
Nonvested at January 1, 2011	446,125		$	47.39
Granted	211,050		55.91
Vested	(190,262	)	43.32
Forfeited	(18,952	)	44.55
Nonvested at December 31, 2011	447,961		47.44
Granted	376,445		47.37
Vested	(220,788	)	45.66
Forfeited	(14,091	)	45.37
Nonvested at December 31, 2012	589,527		48.11
Granted	453,549		48.20
Vested	(248,003	)	46.46
Forfeited	(18,330	)	47.85
Nonvested at December 31, 2013	776,743		$	48.70

Non-Employee Directors	Number of Shares		Weighted Average Grant Date Price
Nonvested at December 31, 2011	—		$	—
Granted	24,606		40.23
Vested	—		—
Forfeited	—		—
Nonvested at December 31, 2012	24,606		$	40.23
Granted	21,128		41.65
Vested	(10,030	)	40.23
Forfeited	—		—
Nonvested at December 31, 2013	35,704		$	41.07

The restricted stock awards vest in periods ranging from 2 to 3 years, except for a portion of those granted to certain executive officers. As to those executive officers, 30% of the shares granted, or 57,405 shares in 2013, 46,441 shares in 2012, and 20,062 shares in 2011 (the performance shares), will cliff vest in the first half of 2016, 2015, and 2014, respectively. The actual number of performance shares that vest in 2014, 2015, and 2016 will be based on the company’s achievement of certain performance criteria over a three-year period, and will range from 0% to 150% of the restricted shares granted as performance shares. Based on the performance criteria, the participants will receive 65.25% of the 2011 performance based shares and are estimated to receive the targeted amount (or 100%) of the 2012 and 2013 performance shares.

The fair value of the restricted stock granted in 2013, 2012, and 2011 at the grant date was $21.3 million, $16.9 million, and $10.8 million, respectively. The aggregate intrinsic value of the 248,003 shares of restricted stock on their 2013 vesting date was $11.3 million. The aggregate intrinsic value of the 776,743 shares outstanding subject to vesting at December 31, 2013 was $40.1 million with a weighted average remaining life of 1.0 year.

Employee Stock Option Plan

The Stock Option Plan, provided the granting of options for up to 2,700,000 shares of common stock to officers and employees. The option plan permitted the issuance of qualified or nonqualified stock options. Options granted typically became exercisable at the rate of 20% per year one year after being granted and expire after 10 years from the original grant date. The exercise price for options granted under this plan was the fair market value of the common stock on the date of the grant. In 2006, as a result of the approval of the adoption of the Unit Corporation Stock and Incentive Compensation Plan, no further awards were made under this plan.

Activity pertaining to the Stock Option Plan is as follows:

	Number of Shares		Weighted Average Exercise Price
Outstanding at January 1, 2011	184,765		$	31.11
Granted	—		—
Exercised	(42,285	)	28.29
Forfeited	(3,500	)	53.90
Outstanding at December 31, 2011	138,980		31.39
Granted	—		—
Exercised	(18,850	)	20.38
Forfeited	(2,100	)	37.83
Outstanding at December 31, 2012	118,030		33.03
Granted	—		—
Exercised	(48,110	)	26.09
Forfeited	(1,000	)	37.83
Outstanding at December 31, 2013	68,920		$	37.81

There were no shares that vested in 2013, 2012, or 2011. The intrinsic value of options exercised in 2013 was $1.1 million. Total cash received from the options exercised in 2013 was $0.1 million.

	Outstanding and Exercisable Options at December 31, 2013
Exercise Prices	Number of Shares	Weighted Average Remaining Contractual Life	Weighted Average Exercise Price
$37.69 - $37.83	68,920	1.0 year	$37.81

Options for 68,920, 118,030, and 138,980 shares were exercisable with weighted average exercise prices of $37.81, $33.03, and $31.39 at December 31, 2013, 2012, and 2011, respectively. The aggregate intrinsic value of the 68,920 shares outstanding subject to options at December 31, 2013 was $1.0 million with a weighted average remaining contractual term of 1.0 year.

Non-Employee Directors' Stock Option Plan

Under the Unit Corporation 2000 Non-Employee Directors’ Stock Option Plan, on the first business day following each annual meeting of shareholders, each person who was then a member of our Board of Directors and who was not then an employee of the company or any of its subsidiaries was granted an option to purchase 3,500 shares of common stock. The option price for each stock option was the fair market value of the common stock on the date the stock options were granted. The term of each option is 10 years and cannot be increased and no stock options were to be exercised during the first six months of its term except in case of death. As mentioned above, on May 2, 2012, our stockholders approved the amended plan which succeeds this plan, and no new awards will be issued under the non-employee director option plan.

Activity pertaining to the Directors’ Plan is as follows:

	Number of Shares		Weighted Average Exercise Price
Outstanding at January 1, 2011	178,500		$	48.77
Granted	31,500		53.81
Exercised	(10,500	)	21.96
Forfeited	—		—
Outstanding at December 31, 2011	199,500		48.37
Granted	—		—
Exercised	(7,000	)	20.28
Forfeited	—		—
Outstanding at December 31, 2012	192,500		49.39
Granted	—		—
Exercised	(17,500	)	32.53
Forfeited	(3,500	)	20.46
Outstanding at December 31, 2013	171,500		$	51.70

The total grant date fair value of the 31,500 shares vesting in 2011 was $0.7 million. The intrinsic value of the 17,500 options exercised in 2013 was $0.2 million. Total cash received from options exercised in 2013 was $0.6 million.

	Outstanding and Exercisable Options at December 31, 2013
Weighted Average Exercise Price	Number of Shares	Weighted Average Remaining Contractual Life	Weighted Average Exercise Price
$28.23 - $41.21	66,500	4.6 years	$	36.64
$53.81 - $73.26	105,000	4.5 years	$	61.24

Options for 171,500, 192,500, and 199,500 shares were exercisable with weighted average exercise prices of $51.70, $49.39, and $48.37 at December 31, 2013, 2012, and 2011, respectively. The aggregate intrinsic value of the shares outstanding subject to options at December 31, 2013 was $1.0 million with a weighted average remaining contractual term of 4.6 years.

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Industry Segment Information

12 Months Ended

Dec. 31, 2013

Segment Reporting [Abstract]

Industry Segment Information

We have three main business segments offering different products and services:

• Oil and natural gas,

• Contract drilling, and

• Mid-stream

The oil and natural gas segment is engaged in the development, acquisition, and production of oil and natural gas properties. The contract drilling segment is engaged in the land contract drilling of oil and natural gas wells and the mid-stream segment is engaged in the buying, selling, gathering, processing, and treating of natural gas.

We evaluate each segment’s performance based on its operating income, which is defined as operating revenues less operating expenses and depreciation, depletion, amortization, and impairment. Our oil and natural gas production outside the United States is not significant.

The following table provides certain information about the operations of each of our segments:

	2013			2012				2011
	(In thousands)
Revenues:
Oil and natural gas	$	649,718		$	567,944			$	514,614
Contract drilling	479,091			579,368				536,872
Elimination of inter-segment revenue	(64,313		)	(49,649		)		(52,221		)
Contract drilling net of inter-segment revenue	414,778			529,719				484,651
Gas gathering and processing	378,397			290,773				284,248
Elimination of inter-segment revenue	(91,043		)	(73,313		)		(76,010		)
Gas gathering and processing net of inter-segment revenue	287,354			217,460				208,238
Total revenues	$	1,351,850		$	1,315,123			$	1,207,503
Operating income:
Oil and natural gas	$	239,219		$	(77,221	)	(3)	$	199,993
Contract drilling	96,304			159,188				135,085
Gas gathering and processing	10,757			5,780			(4)	17,278
Total operating income (1)	346,280			87,747				352,356
General and administrative expense	(38,323		)	(33,086		)		(30,055		)
Gain (loss) on disposition of assets	17,076			253				(595		)
Interest expense, net	(15,015		)	(14,137		)		(4,167		)
Gain (loss) on derivatives not designated as hedges and hedge ineffectiveness, net	(8,374		)	(1,243		)		1,702
Other income (expense), net	(175		)	(132		)		(239		)
Income before income taxes	$	301,469		$	39,402			$	319,002
Identifiable assets:
Oil and natural gas	$	2,441,792		$	2,214,029			$	1,820,492
Contract drilling	1,042,661			1,079,736				1,118,666
Gas gathering and processing	473,717			413,708				247,763
Total identifiable assets (2)	3,958,170			3,707,473				3,186,921
Corporate assets	64,220			53,647				69,799
Total assets	$	4,022,390		$	3,761,120			$	3,256,720
Capital expenditures:
Oil and natural gas (5)	$	531,233		$	1,145,337			$	588,158
Contract drilling	64,325			77,520				162,208
Gas gathering and processing	96,085			183,162				79,355
Other (5)	4,483			11,083				2,688
Total capital expenditures	$	696,126		$	1,417,102			$	832,409
Depreciation, depletion, amortization, and impairment:
Oil and natural gas
Depreciation, depletion and amortization	226,498			211,347				183,350
Impairment of oil and natural gas properties	—			283,606			(3)	—
Contract drilling	71,194			81,007				79,667
Gas gathering and processing	33,191			24,388			(4)	16,101
Other	3,024			2,279				1,333
Total depreciation, depletion, amortization, and impairment	$	333,907		$	602,627			$	280,451

_________________________ 

(1) Operating income is total operating revenues less operating expenses, depreciation, depletion, amortization, and impairment and does not include general corporate expenses, (gain) loss on disposition of assets, gain (loss) on non-designated hedges and hedge ineffectiveness, interest expense, other income (loss), or income taxes.

(2) Identifiable assets are those used in Unit’s operations in each industry segment. Corporate assets are principally cash and cash equivalents, short-term investments, corporate leasehold improvements, furniture and equipment.

(3) In June 2012 and December 2012, due to low 12-month average commodity prices, we incurred non-cash ceiling test write downs of our oil and natural gas properties of $115.9 million pre-tax ($72.1 million net of tax) and $167.7 million pre-tax ($104.4 million net of tax), respectively.

(4) Depreciation, depletion, amortization, and impairment for gas gathering and processing includes a $1.2 million write down of our Erick system.

(5) Reclassified salt water disposal capital expenditures out of other and into oil and natural gas of $16,988 and $8,103 for 2012 and 2011, respectively.

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Supplemental Oil And Gas Disclosures (Standardized Measure Of Discounted Future Cash Flows Relating To Proved Reserves Disclosure) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Supplemental Oil and Gas Disclosures [Abstract]
Future net cash flows relating to proved oil and gas reserves future cash inflows	$ 5,573,119	$ 4,522,351	$ 4,583,629
Future production costs	(1,734,985)	(1,405,773)	(1,277,856)
Future development costs	(571,170)	(431,673)	(340,992)
Future income tax expenses	(1,044,608)	(762,519)	(952,736)
Future net cash flows	2,222,356	1,922,386	2,012,045
10% annual discount for estimated timing of cash flows	(996,380)	(842,430)	(924,136)
Standardized measure of discounted future net cash flows relating to proved oil, NGLs and natural gas reserves	$ 1,225,976	$ 1,079,956	$ 1,087,909
Percentage of annual discount for estimated timing of cash flows	10.00%	10.00%	10.00%

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Acquisitions and Divestitures - Fair Value of Acquired Assets and Liabilities (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Sep. 17, 2012 Western Oklahoma and Texas Panhandle [Member] Noble Energy, Inc. [Member]
Adjusted Purchase Price [Abstract]
Total consideration given				$ 592,627
Oil and natural gas properties included in the full cost pool:
Proved oil and natural gas properties				260,799
Unproved oil and natural gas properties				353,343
Total oil and natural gas properties included in the full cost pool				614,142	[1]
Equipment and facilities				25,163
Asset retirement obligation	(133,657)	(146,159)	(96,446)	(46,678)
Fair value of net assets acquired				$ 592,627

[1] We used a discounted cash flow model and made market assumptions as to future commodity prices, projections of estimated quantities of oil and natural gas reserves, expectations for timing and amount of future development and operating costs, projections of future rates of production, expected recovery rates and risk adjusted discount rates.

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Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2013

Fair Value Disclosures [Abstract]

Recurring Fair Value Measurements

The following tables set forth our recurring fair value measurements:

	December 31, 2013
	Level 2			Level 3			Effect of Netting			Total
	(In thousands)
Financial assets (liabilities):
Commodity derivatives:
Assets	$	1,978		$	20		$	(1,483	)	$	515
Liabilities	(4,429		)	(2,615		)	1,483			(5,561		)
	$	(2,451	)	$	(2,595	)	$	—		$	(5,046	)

	December 31, 2012
	Level 2			Level 3			Effect of Netting			Total
	(In thousands)
Financial assets (liabilities):
Commodity derivatives:
Assets	$	18,555		$	—		$	(2,003	)	$	16,552
Liabilities	(3,918		)	(595		)	2,003			(2,510		)
	$	14,637		$	(595	)	$	—		$	14,042

Reconciliations Of Level 3 Fair Value Measurements

The following tables are reconciliations of our level 3 fair value measurements:

	Net Derivatives
	For the Year Ended,
	December 31, 2013			December 31, 2012
	(In thousands)
Beginning of period	$	(595	)	$	33,615
Total gains or losses:
Included in earnings (1)	(2,637		)	24,484
Included in other comprehensive income (loss)	—			(11,641		)
Settlements	637			(25,129		)
Transfers out of Level 3 into Level 2	—			(21,924		)
End of period	$	(2,595	)	$	(595	)
Total gains (losses) for the period included in earnings attributable to the change in unrealized loss relating to assets still held at end of period	$	(2,000	)	$	(645	)

_________________________

(1) Commodity sales collars are reported in the consolidated statements of income in oil and gas revenues (for cash flow hedges), and gain (loss) on derivatives not designated as hedges and hedge ineffectiveness, net, respectively.

Schedule Of Quantitative Information About Unobservable Inputs

The following table provides quantitative information about our Level 3 unobservable inputs at December 31, 2013:

Commodity (1)	Fair Value			Valuation Technique	Unobservable Input	Range
	(In thousands)
Oil collars	$	(2,246	)	Discounted cash flow	Forward commodity price curve	$0.20-$5.29
Natural gas collar	$	(349	)	Discounted cash flow	Forward commodity price curve	$0.00-$0.39

 _________________________

(1) The commodity contracts detailed in this category include non-exchange-traded natural gas and crude oil collars that are valued based on NYMEX. The forward pricing range represents the low and high price expected to be received within the settlement period.

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Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Net income	$ 184,746	$ 23,176	$ 195,867
Change in value of derivative instruments used as cash flow hedges, net of tax of ($4,717), $12,094, and $18,412	(7,349)	18,635	29,384
Reclassification - derivative settlements, net of tax of ($249), ($20,171), and ($1,146)	(354)	(31,682)	(1,819)
Ineffective portion of derivatives, net of tax of $74, $1,008, and ($1,061)	116	1,608	(1,688)
Total comprehensive income	$ 177,159	$ 11,737	$ 221,744

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Commitments And Contingencies (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Other Commitments [Line Items]
Lease expiration date	Sep. 01, 2017
Future minimum rental payments under leases, year one	$ 8,400,000
Future minimum rental payments under leases, year two	3,400,000
Future minimum rental payments under leases, year three	600,000
Future minimum rental payments under leases, year four	100,000
Rent expense incurred	16,900,000	14,000,000	8,500,000
Repurchase of limited units outstanding	20.00%
Repurchase of limited units outstanding amount	16,000	56,000	22,000
Drilling Equipment [Member]
Other Commitments [Line Items]
Purchase Commitment, Remaining Minimum Amount Committed	11,400,000
Gas Gathering and Processing Equipment [Member]
Other Commitments [Line Items]
Purchase Commitment, Remaining Minimum Amount Committed	$ 600,000

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Organization

12 Months Ended

Dec. 31, 2013

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Organization

Unless the context clearly indicates otherwise, references in this report to “Unit”, “Company”, “we”, “our”, “us”, or like terms refer to Unit Corporation and its subsidiaries.

We are primarily engaged in the land contract drilling of natural gas and oil wells, the exploration, development, acquisition, and production of oil and natural gas properties, and the buying, selling, gathering, processing, and treating of natural gas. Our operations are located principally in the United States and are organized in the following three reporting segments: (1) Oil and Natural Gas, (2) Contract Drilling, and (3) Mid-Stream.

Oil and Natural Gas.  Carried out by our subsidiary, Unit Petroleum Company, we explore, develop, acquire, and produce oil and natural gas properties for our own account. Our producing oil and natural gas properties, unproved properties, and related assets are located mainly in Oklahoma and Texas, and to a lesser extent, in Arkansas, Colorado, Kansas, Louisiana, Mississippi, Montana, New Mexico, North Dakota, Pennsylvania, and Wyoming.

Historically, our contract drilling segment experienced more demand for natural gas drilling as opposed to drilling for oil and NGLs. With the current natural gas market, operators have been focusing on drilling for oil and NGLs.

Contract Drilling.  Carried out by our subsidiary, Unit Drilling Company and its subsidiary Unit Texas Drilling, L.L.C., we drill onshore oil and natural gas wells for our own account as well as for a wide range of other oil and natural gas companies. Our drilling operations are mainly located in Oklahoma, Texas, Louisiana, Kansas, Wyoming, Colorado, Utah, Montana, and North Dakota.

Mid-Stream.  Carried out by our subsidiary, Superior Pipeline Company, L.L.C. and its subsidiaries, we buy, sell, gather, transport, process, and treat natural gas for our own account and for third parties. Mid-stream operations are performed in Oklahoma, Texas, Kansas, Pennsylvania, and West Virginia.

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Asset Retirement Obligations (Schedule Of Asset Retirement Obligations) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012
ARO liability, January 1:	$ 146,159		$ 96,446
Accretion of discount	5,450		4,615
Liability incurred	4,857		56,650	[1]
Liability settled	(4,751)		(2,788)
Liability sold	(2,622)		(1,258)
Revision of estimates	(15,436)	[2]	(7,506)	[2]
ARO liability, December 31:	133,657		146,159
Less current portion	2,954		2,953
Total long-term ARO liability	130,703		143,206
Noble Energy, Inc. [Member]
Liability incurred			$ 46,700

[1] The liability incurred increased $46.7 million related to the Noble properties acquired in September 2012.

[2] Plugging liability estimates were revised in both 2013 and 2012 for updates in the cost of services used to plug wells over the preceding year. We had various upward and downward adjustments as well as changes in estimated timing of cash flows.

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Fair Value Measurements (Recurring Fair Value Measurements) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Financial assets (liabilities)	$ (5,000)
Commodity Derivatives [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets	515	16,552
Liabilities	(5,561)	(2,510)
Financial assets (liabilities)	(5,046)	14,042
Commodity Derivatives [Member] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets	1,978	18,555
Liabilities	(4,429)	(3,918)
Financial assets (liabilities)	(2,451)	14,637
Commodity Derivatives [Member] | Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets	20	0
Liabilities	(2,615)	(595)
Financial assets (liabilities)	(2,595)	(595)
Commodity Derivatives [Member] | Effect of Netting [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets	(1,483)	(2,003)
Liabilities	1,483	2,003
Financial assets (liabilities)	$ 0	$ 0

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Stock-Based Compensation Stock-Based Compensation (Activity Pertaining to Stock Appreciation Rights) (Details) (Stock Appreciation Rights (SARs) [Member], USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Stock Appreciation Rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares, beginning balance	145,901	145,901	145,901
Weighted average grant date price, beginning balance	$ 46.59	$ 46.59	$ 46.59
Number of shares, granted	0	0	0
Weighted average grant date price, granted	$ 0	$ 0	$ 0
Number of shares, exercised	0	0	0
Weighted average grant date price, exercised	$ 0	$ 0	$ 0
Number of shares, forfeited	0	0	0
Weighted average grant date price, forfeited	$ 0	$ 0	$ 0
Number of shares, ending balance	145,901	145,901	145,901
Weighted average grant date price, ending balance	$ 46.59	$ 46.59	$ 46.59

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Selected Quarterly Financial Information

12 Months Ended

Dec. 31, 2013

Selected Quarterly Financial Information [Abstract]

Selected Quarterly Financial Information

Summarized unaudited quarterly financial information is as follows:

	Three Months Ended
	March 31		June 30			September 30		December 31
	(In thousands except per share amounts)
2013
Revenues	$	318,532	$	340,421		$	333,776	$	359,121
Gross profit	$	83,683	$	90,823		$	79,082	$	92,692		(1)
Net income	$	40,206	$	59,007		$	34,232	$	51,301
Net income per common share:
Basic	$	0.84	$	1.22		$	0.71	$	1.06
Diluted	$	0.83	$	1.22		$	0.70	$	1.05
2012
Revenues	$	333,966	$	327,785		$	321,790	$	331,582
Gross profit (loss)	$	95,912	$	(22,253	)	$	95,921	$	(81,833	)	(1)
Net income (loss)	$	52,439	$	(19,302	)	$	46,586	$	(56,547	)
Net income (loss) per common share:
Basic	$	1.10	$	(0.40	)	$	0.97	$	(1.18	)	(2)
Diluted	$	1.09	$	(0.40	)	$	0.97	$	(1.18	)

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(1) Gross profit excludes general and administrative expense, interest expense, (gain) loss on disposition of assets, gain (loss) on non-designated hedges and hedge ineffectiveness, income taxes, and other income (loss).

(2) Due to the effect of rounding the basic earnings per share for the year’s four quarters does not equal annual earnings per share.

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Stock-Based Compensation (Narrative) (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended	12 Months Ended					12 Months Ended				12 Months Ended									12 Months Ended					12 Months Ended
	Mar. 31, 2013	Dec. 31, 2013	Dec. 31, 2013 Stock Appreciation Rights (SARs) [Member]	Dec. 31, 2012 Stock Appreciation Rights (SARs) [Member]	Dec. 31, 2011 Stock Appreciation Rights (SARs) [Member]	Dec. 31, 2010 Stock Appreciation Rights (SARs) [Member]	Dec. 31, 2013 Restricted Stock [Member]	Dec. 31, 2012 Restricted Stock [Member]	Dec. 31, 2011 Restricted Stock [Member]	Dec. 31, 2010 Restricted Stock [Member]	Dec. 31, 2013 Restricted Stock [Member] Minimum [Member]	Dec. 31, 2013 Restricted Stock [Member] Maximum [Member]	Dec. 31, 2013 Restricted Stock [Member] First Half of 2016 [Member]	Dec. 31, 2012 Restricted Stock [Member] First Half of 2015 [Member]	Dec. 31, 2011 Restricted Stock [Member] First Half of 2014 [Member]	Dec. 31, 2013 Stock Options [Member]	Dec. 31, 2012 Stock Options [Member]	Dec. 31, 2011 Stock Options [Member]	Dec. 31, 2010 Stock Options [Member]	Dec. 31, 2013 Directors Plan [Member]	Dec. 31, 2012 Directors Plan [Member]	Dec. 31, 2011 Directors Plan [Member]	Dec. 31, 2010 Directors Plan [Member]	Dec. 31, 2013 Incentive Stock Grants [Member]	Dec. 31, 2013 2011 [Member] Restricted Stock [Member]	Dec. 31, 2013 2012 [Member] Restricted Stock [Member]	Dec. 31, 2013 2013 [Member] Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost related to unvested awards		$ 14.2
Unrecognized compensation cost, expect to be capitalized		2.4
Weighted average years over which this cost will be recognized		0 years 9 months 18 days
Maximum number of shares of common stock allowed for the issuance		3,300,000																						2,000,000
Number of shares, granted			0	0	0		453,549	376,445	211,050
Expire years			10 years													10 years				10 years
Shares vested			0	0	33,745											0	0	0
Number of shares, ending balance			145,901	145,901	145,901	145,901	776,743	589,527	447,961	446,125
Aggregate intrinsic value			0.7				40.1													1.0
Weighted average remaining contractual term, years			3 years 7 months 6 days													1 year				4 years 7 months 6 days
Vesting Period											2 years	3 years								0 years 6 months
Percentage of restricted stock awards to be vested as performance shares to executives							30.00%
Restricted stock awards granted to designated executive officers													57,405	46,441	20,062
Performance evaluation period	3 years
Performance percentage criteria											0.00%	150.00%													65.25%	100.00%	100.00%
Grant date fair value							21.3	16.9	10.8													0.7
Number of Shares, Vested							(248,003)	(220,788)	(190,262)
Exercised intrinsic value							11.3									1.1
Restricted stock weighted average remaining contractual term, years							1 year
Maximum Number of Shares of Common Stock Previously Allowed for the Issuance																2,700,000
Vesting rate of options																20.00%
Cash received from the options exercised																0.1				0.6
Options Outstanding																68,920	118,030	138,980	184,765	171,500	192,500	199,500	178,500
Weighted average grant date price, ending balance			$ 46.59	$ 46.59	$ 46.59	$ 46.59	$ 48.70	$ 48.11	$ 47.44	$ 47.39						$ 37.81	$ 33.03	$ 31.39	$ 31.11	$ 51.70	$ 49.39	$ 48.37	$ 48.77
Exercisable options intrinsic value																$ 1.0				$ 0.2
Director option awards																					3,500
Options granted																0	0	0		0	0	31,500
Number of Shares, Exercised																(48,110)	(18,850)	(42,285)		(17,500)	(7,000)	(10,500)

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Transactions With Related Parties (Tables)

12 Months Ended

Dec. 31, 2013

Related Party Transactions [Abstract]

Schedule Of Amount Received In Public And Private Partnerships

Amounts received in the years ended December 31, from both public and private Partnerships for which Unit is a general partner are as follows:

	2013		2012		2011
	(In thousands)
Contract drilling	$	16	$	246	$	352
Well supervision and other fees	$	470	$	434	$	396
General and administrative expense reimbursement	$	36	$	39	$	610

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Shareholder Rights Plan

12 Months Ended

Dec. 31, 2013

Shareholder Rights Plan [Abstract]

Shareholder Rights Plan

We maintain a Shareholder Rights Plan (the Plan) designed to deter coercive or unfair takeover tactics, to prevent a person or group from gaining control of us without offering fair value to all our shareholders and to deter other abusive takeover tactics, which are not in the best interest of shareholders.

Under the terms of the Plan, each share of common stock is accompanied by one right, which given certain acquisition and business combination criteria, entitles the shareholder to purchase from us one one-hundredth of a newly issued share of Series A Participating Cumulative Preferred Stock at a price subject to adjustment by us or to purchase from an acquiring company certain shares of its common stock or the surviving company’s common stock at 50% of its value.

The rights become exercisable 10 days after we learn that an acquiring person (as defined in the Plan) has acquired 15% or more of the outstanding common stock of Unit or 10 business days after the commencement of a tender offer, which would result in a person owning 15% or more of our shares. We can redeem the rights for $0.01 per right at any date before the earlier of (i) the close of business on the 10th day following the time we learn that a person has become an acquiring person or (ii) May 19, 2015 (the “Expiration Date”). The rights will expire on the Expiration Date, unless redeemed earlier by Unit.