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Supplemental Oil And Gas Disclosures
12 Months Ended
Dec. 31, 2020
Supplemental Oil and Gas Disclosures [Abstract]  
Supplemental Oil And Gas Disclosures
SUPPLEMENTAL OIL AND GAS DISCLOSURES
(UNAUDITED)

The supplemental data presented herein reflects information for all our oil and natural gas producing activities. Our oil and gas operations are substantially located in the United States.

Capitalized Costs

The capitalized costs at year end were as follows:
SuccessorPredecessor
20202019
 (In thousands)
Proved properties$238,581 $6,341,582 
Unproved properties (wells in progress)1,591 252,874 
240,172 6,594,456 
Accumulated depreciation, depletion, amortization, and impairment(40,806)(5,846,177)
Net capitalized costs$199,366 $748,279 

Costs Incurred in Oil and Natural Gas Property Acquisition, Exploration, and Development Activities

The following table sets forth costs incurred related to our oil and natural gas activities for the periods indicated:
SuccessorPredecessor
Period
September 1, 2020
through
December 31, 2020
Period
January 1, 2020 through
August 31, 2020
For the Year Ended
December 31, 2019
(In thousands)
Unproved properties acquired$26 $2,373 $34,668 
Proved properties acquired— 382 3,653 
Exploration— — 16,480 
Development3,992 6,440 211,443 
Asset retirement obligation(1,702)(29,189)76 
Total costs incurred$2,316 $(19,994)$266,320 

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:
SuccessorPredecessor
Period
September 1, 2020
through
December 31, 2020
Period
January 1, 2020 through
August 31, 2020
For the Year Ended
December 31, 2019
(In thousands)
Revenues$55,272 $96,033 $314,925 
Production costs(20,510)(46,633)(116,051)
Depreciation, depletion, amortization, and impairment(40,840)(461,901)(727,529)
(6,078)(412,501)(528,655)
Income tax (expense) benefit128 6,698 101,952 
Results of operations for producing activities (excluding corporate overhead and financing costs)
$(5,950)$(405,803)$(426,703)
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
Total
MBoe
 (In thousands)
2019
Proved developed and undeveloped reserves:
Beginning of year22,558 47,796 535,963 159,681 
Revision of previous estimates (1)
(8,263)(20,961)(234,852)(68,366)
Extensions and discoveries (1)
703 845 8,798 3,015 
Infill reserves in existing proved fields271 434 4,806 1,506 
Purchases of minerals in place183 101 1,316 503 
Production(3,208)(4,773)(53,064)(16,825)
Sales(48)(412)(42,780)(7,590)
Net proved reserves at December 31, 201912,196 23,030 220,187 71,924 
Proved developed reserves, December 31, 201912,196 23,030 220,187 71,924 
Proved undeveloped reserves, December 31, 2019— — — — 
2020
Proved developed and undeveloped reserves:
Beginning of year12,196 23,030 220,187 71,924 
Revision of previous estimates(1,909)(4,477)(38,901)(12,870)
Extensions and discoveries13 110 39 
Infill reserves in existing proved fields97 66 452 238 
Purchases of minerals in place62 20 172 112 
Production(2,186)(3,444)(37,567)(11,891)
Sales(1)— (62)(11)
Net proved reserves at December 31, 20208,267 15,208 144,391 47,541 
Proved developed reserves, December 31, 20208,267 15,208 144,391 47,541 
Proved undeveloped reserves, December 31, 2020— — — — 
_________________________
1.Revisions of previous estimates and extensions and discoveries decreased primarily due to the removal of proved undeveloped reserves due to uncertainty regarding our ability to finance the development of our proved undeveloped reserves over a five-year period and from lower commodity 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 adjusted for permanent differences that relate to existing proved oil, NGLs, and natural gas reserves. Future income tax expenses consider the Tax Act statutory tax rates. SMOG as of December 31 is as follows:
SuccessorPredecessor
20202019
 (In thousands)
Future cash flows$698,685 $1,386,777 
Future production costs(416,095)(698,357)
Future development costs— — 
Future income tax expenses(39)(321)
Future net cash flows282,551 688,099 
10% annual discount for estimated timing of cash flows(89,530)(226,390)
Standardized measure of discounted future net cash flows relating to proved oil, NGLs, and natural gas reserves
$193,021 $461,709 
The principal sources of changes in the standardized measure of discounted future net cash flows were as follows:
20202019
 
Sales and transfers of oil and natural gas produced, net of production costs$(84,163)$(200,233)
Net changes in prices and production costs(165,978)(508,066)
Revisions in quantity estimates and changes in production timing(50,979)(338,994)
Extensions, discoveries, and improved recovery, less related costs2,827 53,123 
Changes in estimated future development costs— 311,190 
Previously estimated cost incurred during the period— 64,362 
Purchases of minerals in place852 6,416 
Sales of minerals in place(46)(25,813)
Accretion of discount46,203 110,571 
Net change in income taxes282 121,708 
Changes in timing and other(17,686)(116,233)
Net change(268,688)(521,969)
Beginning of year461,709 983,678 
End of year$193,021 $461,709 

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 neither 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, 2020, future cash flows were computed by applying the unescalated 12-month average prices of $39.57 per barrel for oil, $18.70 per barrel for NGLs, and $1.98 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.