10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

Form 10‑Q

☑QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended June 30, 2018

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 001‑38066

SELECT ENERGY SERVICES, INC.

(Exact name of registrant as specified in its charter)

Delaware	81‑4561945
(State of incorporation)	(IRS Employer Identification Number)
515 Post Oak Boulevard, Suite 200 Houston, TX	77027
(Address of principal executive offices)	(Zip Code)

(713) 235‑9500

(Registrant’s telephone number, including area code)

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  ☑    No  ☐

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

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

Large accelerated filer ☐	Accelerated filer ☐	Non-accelerated filer ☑	Smaller reporting company ☐
		(Do not check if a smaller reporting company)	Emerging growth company ☑

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 7(a)(2)(B) of the Securities Act. ☐

Indicate by check mark whether the registrant is a shell company.   Yes  ☐    No  ☑

As of August 3, 2018, the registrant had 79,337,119 shares of Class A common stock and 27,351,022 shares of Class B common stock outstanding.

SELECT ENERGY SERVICES, INC.

TABLE OF CONTENTS

		Page
PART I—FINANCIAL INFORMATION
Item 1.	Financial Statements (Unaudited)	5
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	41
Item 3.	Quantitative and Qualitative Disclosures about Market Risk	57
Item 4.	Controls and Procedures	58
PART II—OTHER INFORMATION
Item 1.	Legal Proceedings	59
Item 1A.	Risk Factors	59
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	59
Item 3.	Defaults upon Senior Securities	60
Item 4.	Mine Safety Disclosures	60
Item 5.	Other Information	60
Item 6.	Exhibits	60

2

CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS

This Quarterly Report on Form 10‑Q (the “Quarterly Report”) includes “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended (the “Securities Act”) and Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). All statements, other than statements of historical fact included in this Quarterly Report, regarding our strategy, future operations, financial position, estimated revenues and losses, projected costs, prospects, plans and objectives of management are forward-looking statements. When used in this Quarterly Report, the words “could,” “believe,” “anticipate,” “intend,” “estimate,” “expect,” “project,” “preliminary,” “forecast,” and similar expressions or variations are intended to identify forward-looking statements, although not all forward-looking statements contain such identifying words. These forward-looking statements are based on our current expectations and assumptions about future events and are based on currently available information as to the outcome and timing of future events. When considering forward-looking statements, you should keep in mind the risk factors and other cautionary statements described under the heading “Risk Factors” included in our most recent Annual Report on Form 10-K and under the heading “Part II―Item 1A. Risk Factors” in this Quarterly Report. These forward-looking statements are based on management’s current belief, based on currently available information, as to the outcome and timing of future events.

Important factors that could cause actual results to differ materially from those in the forward-looking statements include, but are not limited to, those summarized below:

· the ultimate outcome and results of integrating our operations with the operations of Rockwater (as defined herein);

· the effects of our business combination with Rockwater, including the combined company’s future financial condition, results of operations, strategy and plans;

· potential adverse reactions or changes to business relationships resulting from the completion of the Rockwater Merger (as defined herein);

· expected benefits from the Rockwater Merger and the ability of the combined company to realize those benefits;

· the level of capital spending by oil and gas companies;

· trends and volatility in oil and gas prices;

· demand for our services;

· regional impacts to our business such as takeaway capacity and our key infrastructure assets;

· our ability to retain key management and employees;

· our ability to hire and retain skilled labor;

· our level of indebtedness and our ability to comply with covenants contained in our Credit Agreement (as defined herein) or future debt instruments;

· our access to capital to fund expansions, acquisitions and our working capital needs and our ability to obtain debt or equity financing on satisfactory terms;

· our safety performance;

3

· the impact of current and future laws, rulings and governmental regulations, including those related to hydraulic fracturing, accessing water, disposing of wastewater, transferring produced water, interstate fresh water transfer, chemicals and various environmental matters;

· the impacts of competition on our operations;

· the degree to which customers may elect to source water services internally;

· delays or restrictions in obtaining permits by us or our customers;

· constraints in supply or availability of equipment used in our business;

· the impacts of advancements, or changes in costs, in drilling, completions and well service technologies;

· changes in global political or economic conditions, generally, and in the markets we serve;

· accidents, weather, seasonality or other events affecting our business; and

· the other risks identified in our most recent Annual Report on Form 10-K, and under the headings “Part I―Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations” and “Part II―Item 1A. Risk Factors”  in this Quarterly Report.

These factors are not necessarily all of the important factors that could cause actual results to differ materially from those expressed in any of our forward-looking statements. Other unknown or unpredictable factors also could have material adverse effects on our future results. Our future results will depend upon various other risks and uncertainties, including those described under the heading “Part I―Item 1A. Risk Factors” in our most recent Annual Report on Form 10-K and under the heading “Part II―Item 1A. Risk Factors” in this Quarterly Report. Readers are cautioned not to place undue reliance on forward-looking statements, which speak only as of the date hereof. We undertake no obligation to update or revise any forward-looking statements after the date they are made, whether as a result of new information, future events or otherwise. All forward-looking statements attributable to us are qualified in their entirety by this cautionary note.

4

PART I – FINANCIAL INFORMATION

Item 1. Financial Statements

SELECT ENERGY SERVICES, INC.

CONSOLIDATED BALANCE SHEETS

(in thousands, except share data)

	June 30, 2018		December 31, 2017
	(unaudited)
Assets
Current assets
Cash and cash equivalents	$	11,301	$	2,774
Accounts receivable trade, net of allowance for doubtful accounts of $3,762 and $2,979, respectively		425,217		373,633
Accounts receivable, related parties		820		7,669
Inventories		51,680		44,598
Prepaid expenses and other current assets		29,800		17,842
Total current assets		518,818		446,516
Property and equipment		1,063,847		1,034,995
Accumulated depreciation		(580,102)		(560,886)
Property and equipment, net		483,745		474,109
Goodwill		278,359		273,421
Other intangible assets, net		148,908		156,066
Other assets		3,912		6,256
Total assets	$	1,433,742	$	1,356,368
Liabilities and Equity
Current liabilities
Accounts payable	$	66,756	$	52,579
Accounts payable and accrued expenses, related parties		3,924		2,772
Accrued salaries and benefits		14,394		21,324
Accrued insurance		23,260		12,510
Sales tax payable		9,870		12,931
Accrued expenses and other current liabilities		96,409		81,112
Current portion of capital lease obligations		1,468		1,965
Total current liabilities		216,081		185,193
Accrued lease obligations		19,220		18,979
Other long term liabilities		9,629		13,827
Long-term debt		80,000		75,000
Total liabilities		324,930		292,999
Commitments and contingencies (Note 9)
Class A common stock, $0.01 par value; 350,000,000 shares authorized and 77,298,660 shares issued and outstanding as of June 30, 2018; 350,000,000 shares authorized and 59,182,176 shares issued and outstanding as of December 31, 2017		773		592
Class A-2 common stock, $0.01 par value; 40,000,000 shares authorized, no shares issued or outstanding as of June 30, 2018; 40,000,000 shares authorized, 6,731,845 shares issued and outstanding as of December 31, 2017		—		67
Class B common stock, $0.01 par value; 150,000,000 shares authorized and 29,383,320 shares issued and outstanding as of June 30, 2018; 150,000,000 shares authorized and 40,331,989 shares issued and outstanding as of December 31, 2017		294		404
Preferred stock, $0.01 par value; 50,000,000 shares authorized and no shares issued and outstanding as of June 30, 2018 and December 31, 2017		—		—
Additional paid-in capital		790,699		673,141
Retained earnings (accumulated deficit)		9,203		(17,859)
Accumulated other comprehensive (deficit) income		(148)		302
Total stockholders’ equity		800,821		656,647
Noncontrolling interests		307,991		406,722
Total equity		1,108,812		1,063,369
Total liabilities and equity	$	1,433,742	$	1,356,368

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

5

SELECT ENERGY SERVICES, INC.

CONSOLIDATED STATEMENTS OF OPERATIONS

(unaudited)

(in thousands, except share and per share data)

	Three Months Ended June 30,				Six Months Ended June 30,
	2018		2017		2018		2017
Revenue
Water solutions and related services	$	297,446	$	107,812	$	579,001	$	186,189
Accommodations and rentals		15,949		13,327		30,693		22,842
Wellsite completion and construction services		15,045		13,310		31,511		25,343
Oilfield chemical product sales		64,807		—		128,437		—
Total revenue		393,247		134,449		769,642		234,374
Costs of revenue
Water solutions and related services		223,758		78,028		439,183		138,649
Accommodations and rentals		10,773		10,799		21,438		18,722
Wellsite completion and construction services		13,043		10,848		27,433		21,267
Oilfield chemical product sales		58,500		—		115,584		—
Depreciation and amortization		30,445		22,520		61,327		43,724
Total costs of revenue		336,519		122,195		664,965		222,362
Gross profit		56,728		12,254		104,677		12,012
Operating expenses
Selling, general and administrative		26,871		23,254		52,552		33,211
Depreciation and amortization		807		491		1,348		937
Impairment of property and equipment		2,282		—		2,282		—
Impairment of investment		—		—		2,000		—
Lease abandonment costs		1,973		418		3,097		2,281
Total operating expenses		31,933		24,163		61,279		36,429
Income (loss) from operations		24,795		(11,909)		43,398		(24,417)
Other income (expense)
Interest expense, net		(1,342)		(671)		(2,493)		(1,401)
Foreign currency losses, net		(340)		—		(740)		—
Other income, net		2,060		1,952		1,602		3,016
Income (loss) before tax expense		25,173		(10,628)		41,767		(22,802)
Tax (expense) benefit		(150)		138		(612)		32
Net income (loss)		25,023		(10,490)		41,155		(22,770)
Less: net (income) loss attributable to noncontrolling interests		(8,060)		6,274		(14,093)		14,382
Net income (loss) attributable to Select Energy Services, Inc.	$	16,963	$	(4,216)	$	27,062	$	(8,388)
Net income (loss) per share attributable to common stockholders (Note 15):
Class A—Basic	$	0.24	$	(0.16)	$	0.40	$	(0.36)
Class A-1—Basic	$	—	$	(0.16)	$	—	$	(0.36)
Class A-2—Basic	$	—	$	—	$	0.40	$	—
Class B—Basic	$	—	$	—	$	—	$	—
Net income (loss) per share attributable to common stockholders (Note 15):
Class A—Diluted	$	0.24	$	(0.16)	$	0.39	$	(0.36)
Class A-1—Diluted	$	—	$	(0.16)	$	—	$	(0.36)
Class A-2—Diluted	$	—	$	—	$	0.39	$	—
Class B—Diluted	$	—	$	—	$	—	$	—

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

6

SELECT ENERGY SERVICES, INC.

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)

(unaudited)

(in thousands)

	Three Months Ended June 30,				Six Months Ended June 30,
	2018		2017		2018		2017
Net income (loss)	$	25,023	$	(10,490)	$	41,155	$	(22,770)
Other comprehensive income (loss)
Foreign currency translation adjustment, net of tax of $0		(191)		—		(450)		—
Net change in unrealized loss		(191)		—		(450)		—
Comprehensive income (loss)		24,832		(10,490)		40,705		(22,770)
Less: comprehensive (income) loss attributable to noncontrolling interests		(7,998)		6,274		(13,939)		14,382
Comprehensive income (loss) attributable to Select Energy Services, Inc.	$	16,834	$	(4,216)	$	26,766	$	(8,388)

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

7

SELECT ENERGY SERVICES, INC.

CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY

For the six months ended June 30, 2018 and 2017

(unaudited)

(in thousands, except share data)

	Class A			Class A-2			Class B			Preferred							Accumulated
	Stockholders			Stockholders			Stockholders			Stockholders					Retained		Other
		Class A			Class A-2			Class B					Additional		Earnings		Comprehensive		Total
		Common			Common			Common			Preferred		Paid-In		(Accumulated		Income		Stockholders’		Noncontrolling
	Shares	Stock		Shares	Stock		Shares	Stock		Shares	Stock		Capital		Deficit)		(Loss)		Equity		Interests		Total
Balance as of December 31, 2017	59,182,176	$	592	6,731,845	$	67	40,331,989	$	404	—	$	—	$	673,141	$	(17,859)	$	302	$	656,647	$	406,722	$	1,063,369
Conversion of Class A-2 to Class A	6,731,839		67	(6,731,839)		(67)	—		—	—		—		—		—		—		—		—		—
Conversion of Class B to Class A	10,948,669		110	—		—	(10,948,669)		(110)	—		—		111,803		—		—		111,803		(111,803)		—
ESPP shares issued	3,986		—	—		—	—		—	—		—		50		—		—		50		4		54
Equity-based compensation	—		—	—		—	—		—	—		—		3,617		—		—		3,617		1,848		5,465
Issuance of restricted shares	430,595		4	—		—	—		—	—		—		2,261		—		—		2,265		(2,265)		—
Exercise of restricted stock units	27,860		—	—		—	—		—	—		—		104		—		—		104		(104)		—
Stock options exercised	37,209		—	—		—	—		—	—		—		376		—		—		376		1		377
Repurchase of common stock	(45,034)		—	(6)		—	—		—	—		—		(583)		—		—		(583)		(74)		(657)
Restricted shares forfeited	(18,640)		—	—		—	—		—	—		—		(70)		—		—		(70)		70		—
Noncontrolling interest in subsidiary	—		—	—		—	—		—	—		—		—		—		—		—		(280)		(280)
Foreign currency translation adjustment	—		—	—		—	—		—	—		—		—		—		(450)		(450)		(221)		(671)
Net income	—		—	—		—	—		—	—		—		—		27,062		—		27,062		14,093		41,155
Balance as of June 30, 2018	77,298,660	$	773	—	$	—	29,383,320	$	294	—	$	—	$	790,699	$	9,203	$	(148)	$	800,821	$	307,991	$	1,108,812

	Class A			Class A-1			Class A-2			Class B			Preferred							Accumulated
	Stockholders			Stockholders			Stockholders			Stockholders			Stockholders							Other
		Class A			Class A-1			Class A-2			Class B					Additional				Comprehensive		Total
		Common			Common			Common			Common			Preferred		Paid-In		Accumulated		Income		Stockholders’		Noncontrolling
	Shares	Stock		Shares	Stock		Shares	Stock		Shares	Stock		Shares	Stock		Capital		Deficit		(Loss)		Equity		Interests		Total
Balance as of December 31, 2016	3,802,972	$	38	16,100,000	$	161	—	$	—	38,462,541	$	385	—	$	—	$	113,175	$	(1,043)	$	—	$	112,716	$	221,992	$	334,708
Conversion of Class A-1 to Class A	16,100,000		161	(16,100,000)		(161)	—		—	—		—	—		—		—		—		—		—		—		—
Issuance of shares for acquisition	403,368		4	—		—	—		—	—		—	—		—		3,301		—		—		3,305		4,195		7,500
Issuance of shares for initial public offering	10,005,000		100	—		—	—		—	—		—	—		—		87,276		—		—		87,376		41,128		128,504
Equity-based compensation	—		—	—		—	—		—	—		—	—		—		543		—		—		543		689		1,232
Noncontrolling interest in subsidiary	—		—	—		—	—		—	—		—	—		—		—		—		—		—		(309)		(309)
Net loss	—		—	—		—	—		—	—		—	—		—		—		(8,388)		—		(8,388)		(14,382)		(22,770)
Balance as of June 30, 2017	30,311,340	$	303	—	$	—	—	$	—	38,462,541	$	385	—	$	—	$	204,295	$	(9,431)	$	—	$	195,552	$	253,313	$	448,865

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

8

SELECT ENERGY SERVICES, INC.

CONSOLIDATED STATEMENTS OF CASH FLOWS

(unaudited)

(in thousands)

	Six Months Ended June 30,
	2018		2017
Cash flows from operating activities
Net income (loss)	$	41,155	$	(22,770)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities
Depreciation and amortization		62,675		44,661
Gain on disposal of property and equipment		(1,503)		(2,919)
Bad debt expense		876		708
Amortization of debt issuance costs		344		618
Equity-based compensation		5,465		1,232
Impairment of property and equipment		2,282		—
Impairment of investment		2,000		—
Other operating items, net		291		(237)
Changes in operating assets and liabilities
Accounts receivable		(46,057)		(47,998)
Prepaid expenses and other assets		(17,848)		(830)
Accounts payable and accrued liabilities		14,625		3,525
Net cash provided by (used in) operating activities		64,305		(24,010)
Cash flows from investing activities
Acquisitions, net of cash received		—		(55,507)
Purchase of property and equipment		(63,050)		(41,680)
Proceeds received from sale of property and equipment		3,953		5,738
Net cash used in investing activities		(59,097)		(91,449)
Cash flows from financing activities
Proceeds from revolving line of credit and issuance of long-term debt		25,000		34,000
Payments on long-term debt		(20,000)		(34,000)
Payments of capital lease obligations		(1,029)		—
Proceeds from initial public offering		—		140,070
Proceeds from share issuance		431		—
Payments incurred for initial public offering		—		(11,566)
Distributions to noncontrolling interests		(280)		(309)
Other		(657)		—
Net cash provided by financing activities		3,465		128,195
Effect of exchange rate changes on cash		(146)		—
Net increase in cash and cash equivalents		8,527		12,736
Cash and cash equivalents, beginning of period		2,774		40,041
Cash and cash equivalents, end of period	$	11,301	$	52,777
Supplemental cash flow disclosure:
Cash paid for interest	$	1,959	$	849
Cash (refunds) paid for income taxes	$	(1,188)	$	27
Supplemental disclosure of noncash investing activities:
Capital expenditures included in accounts payable and accrued liabilities	$	25,013	$	4,961

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

9

SELECT ENERGY SERVICES, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(UNAUDITED)

NOTE 1—BUSINESS AND BASIS OF PRESENTATION

Description of the business:  Select Energy Services, Inc. (“we,” “Select Inc.” or the “Company”) was incorporated as a Delaware corporation on November 21, 2016. The Company is a holding company whose sole material asset consists of a membership interest in SES Holdings, LLC (“SES Holdings”).

On November 1, 2017, the Company completed the transactions in which subsidiaries of Select Inc. and SES Holdings merged with Rockwater Energy Solutions, Inc. (“Rockwater”) and Rockwater Energy Solutions, LLC (“Rockwater LLC”), respectively, in a stock-for-stock or unit-for-unit transaction (the “Rockwater Merger”). Rockwater operations described in this report describe the operations of Rockwater LLC. See Note 3—Acquisitions for further discussion.

We are a leading provider of total water management and chemical solutions to the oil and gas industry in the United States and Western Canada. The oilfield water services market has grown rapidly over the past decade, driven by advances in drilling, completion and production technologies. Within the major unconventional onshore oil and gas plays in the United States, we believe we are a market leader in sourcing, transfer (both by permanent pipeline and temporary hose) and temporary containment of water prior to its use in drilling and completion activities associated with hydraulic fracturing or “fracking,” which we collectively refer to as “pre‑frac water services.” We also provide well testing and flowback services immediately following the well completion. In most of our areas of operations, we provide additional complementary water‑related services that support oil and gas well completion and production activities including monitoring, treatment, hauling, recycling and disposal. In addition to our water-related services, we also develop and manufacture specialty chemicals used in frac fluid systems and production chemicals used to enhance performance over the life of a well. We believe we are the only oilfield services company that provides total water solutions together with complementary chemical products and related expertise, which we believe gives us a unique competitive advantage in our industry.

We also offer wellsite services that complement our total water management and chemical solutions offering. These services include equipment rental, accommodations, crane and logistics services, wellsite and pipeline construction, field and well services, sand hauling and fluid logistics services. In addition, we provide water transfer, fluid hauling, containment and rental services in Canada.

Reorganization:  On December 20, 2016, Select Inc. completed a private placement (the “Select 144A Offering”) of 16,100,000 shares of Select Inc. Class A‑1 common stock, par value $0.01 per share (“Class A-1 Common Stock”) at an offering price of $20.00 per share. In conjunction with the Select 144A Offering, SES Holdings’ then existing Class A and Class B units were converted into a single class of common units (the “SES Holdings LLC Units”) and SES Holdings effected a 10.3583 for 1 unit split. In exchange for the contribution of all net proceeds from the Select 144A Offering to SES Holdings, SES Holdings issued 16,100,000 SES Holdings LLC Units to Select Inc., and Select Inc. became the sole managing member of SES Holdings. Select Inc. issued 38,462,541 shares of its Class B common stock, par value $0.01 per share (“Class B Common Stock”), to the other member of SES Holdings, SES Legacy Holdings, LLC (“Legacy Owner Holdco”) or one share for each SES Holdings LLC Unit held by Legacy Owner Holdco. Select Inc. also acquired 3,802,972 SES Holdings LLC Units from certain legacy owners (the “Contributing Legacy Owners”) in exchange for the issuance of 3,802,972 shares of Select Inc. Class A common stock, par value $0.01 per share (“Class A Common Stock”). Upon the effectiveness of a shelf registration statement registering such shares for resale on June 13, 2017, all shares of Class A-1 Common Stock converted into shares of Class A Common Stock on a one-for-one basis. Refer below for further discussion. Shareholders of Class A Common Stock, and Class B Common Stock vote together as a single class on all matters, subject to certain exceptions in the Company’s amended and restated certificate of incorporation. Holders of Class B Common Stock have voting rights only and are not entitled to an economic interest in Select Inc. based on their ownership of Class B Common Stock. The reorganization transactions were treated as a combination of entities under common control with assets and liabilities transferred at their carrying amounts in a manner similar to a pooling of interests.

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Initial Public Offering: On April 26, 2017, the Company completed its initial public offering (“IPO”) of 8,700,000 shares of Class A Common Stock at a price of $14.00 per share. On May 10, 2017, the underwriters of the IPO exercised their over-allotment option to purchase an additional 1,305,000 shares of Class A Common Stock at the IPO price of $14.00 per share. After deducting underwriting discounts and commissions and estimated offering expenses payable by it, the Company received $128.5 million of the aggregate net proceeds from the IPO (including the over-allotment option). The Company contributed all of the net proceeds received by it to SES Holdings in exchange for SES Holdings LLC Units. SES Holdings used the net proceeds in the following manner: (i) $34.0 million was used to repay borrowings incurred under the Company’s Previous Credit Facility (as defined and discussed in Note 8) to fund the cash portion of the purchase price of the GRR Acquisition, as defined below, (ii) $7.8 million was used for the cash settlement of outstanding phantom unit awards and (iii) the remaining net proceeds were used for general corporate purposes, including funding capital expenditures.

Rockwater Merger: On November 1, 2017, we completed the Rockwater Merger, as contemplated by the Agreement and Plan of Merger, dated as of July 18, 2017 (the “Merger Agreement”), by and among us, SES Holdings, Raptor Merger Sub, Inc., a Delaware corporation and our wholly owned subsidiary, Raptor Merger Sub, LLC, a Delaware limited liability company and an indirect wholly owned subsidiary of SES Holdings, Rockwater and Rockwater LLC. Pursuant to the Merger Agreement, we combined with Rockwater in a stock‑for‑stock transaction in which we issued approximately 25.9 million shares of Class A Common Stock, 6.7 million shares of Select Inc. Class A-2 common stock, par value $0.01 (the “Class A‑2 Common Stock”) and 4.4 million shares of Class B Common Stock to the former holders of Rockwater common stock and a unit‑for‑unit transaction in which SES Holdings issued approximately 37.3 million common units of SES Holdings  (each, an “SES Holdings LLC Unit”) to the former holders of units in Rockwater LLC (each, a “Rockwater LLC Unit”). See Note 3 – Acquisitions for further discussion.

Credit Agreement:  Concurrent with the Rockwater Merger, the Company entered into a $300.0 million senior secured revolving credit facility (the “Credit Agreement”). In addition, the obligations under the Previous Credit Facility were repaid in full and the Previous Credit Facility was terminated. See Note 8—Debt for further discussion.

Exchange rights:  Under the Eighth Amended and Restated Limited Liability Company Agreement of SES Holdings (the “SES Holdings LLC Agreement”), Legacy Owner Holdco and its permitted transferees have the right (an “Exchange Right”) to cause SES Holdings to acquire all or a portion of its SES Holdings LLC Units for, at SES Holdings’ election, (i) shares of Class A Common Stock at an exchange ratio of one share of Class A Common Stock for each SES Holdings LLC Unit exchanged, subject to conversion rate adjustments for stock splits, stock dividends, reclassification and other similar transactions or (ii) cash in an amount equal to the Cash Election Value (as defined within the SES Holdings LLC Agreement) of such Class A Common Stock. Alternatively, upon the exercise of any Exchange Right, Select Inc. has the right (the “Call Right”) to acquire the tendered SES Holdings LLC Units from the exchanging unitholder for, at its election, (i) the number of shares of Class A Common Stock the exchanging unitholder would have received under the Exchange Right or (ii) cash in an amount equal to the Cash Election Value of such Class A Common Stock. In connection with any exchange of SES Holdings LLC Units pursuant to an Exchange Right or Call Right, the corresponding number of shares of Class B Common Stock will be cancelled.

On May 14, 2018, SES Holdings, pursuant to the limited liability company agreement of SES Holdings, exchanged 10,948,669 SES Holdings LLC Units (along with a corresponding number of shares of our Class B common stock) for an equivalent number of shares of our Class A common stock. 9,948,669 of such shares of Class A common stock were distributed to members of Legacy Owner Holdco, with the remaining shares distributed to WDC Aggregate LLC.

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Registration rights:  In December 2016, in connection with the closing of the Select 144A Offering, Select Inc. entered into a registration rights agreement with FBR Capital Markets & Co. for the benefit of the investors in the Select 144A Offering. Under this registration rights agreement, the Company agreed, at its expense, to file with the U.S Securities and Exchange Commission (“SEC”), in no event later than April 30, 2017, a shelf registration statement registering for resale the 16,100,000 shares of Class A Common Stock issuable upon conversion of the Class A‑1 Common Stock sold in the Select 144A Offering plus any additional shares of Class A‑1 Common Stock issued in respect thereof whether by stock dividend, stock distribution, stock split or otherwise, and to use commercially reasonable efforts to cause such registration statement to be declared effective by the SEC as soon as practicable but in any event within 60 days after the closing of the IPO. The Company filed this registration statement with the SEC on April 28, 2017 and this registration statement was declared effective by the SEC on June 13, 2017. Accordingly, each share of Class A‑1 Common Stock outstanding automatically converted into a share of Class A Common Stock on a one‑for‑one basis at that time. In addition, Legacy Owner Holdco has the right, under certain circumstances, to cause the Company to register the shares of Class A Common Stock obtained pursuant to the Exchange Right. Legacy Owner Holdco exercised this right in May 2018, and the registration statement registering these shares was declared automatically effective by the SEC on May 16, 2018.

Rockwater Registration Rights Agreement: In connection with the closing of the Rockwater Merger, pursuant to that certain Assignment and Assumption Agreement (the “Assignment and Assumption Agreement”), dated as of November 1, 2017, by and between Rockwater and Select Inc., Rockwater assigned, and Select Inc. assumed, Rockwater’s rights and obligations under that certain Registration Rights Agreement made and entered into as of February 16, 2017, between Rockwater and FBR Capital Markets & Co. (as assumed by Select Inc. pursuant to the Assignment and Assumption Agreement, the “Rockwater Registration Rights Agreement”). Under the Rockwater Registration Rights Agreement, Select Inc. agreed, at its expense, to file with the SEC a shelf registration statement registering for resale shares of Class A Common Stock into which the outstanding shares of Class A-2 Common Stock were convertible, and to cause such registration statement to be declared effective by the SEC as soon as practicable but in any event within 180 days after the initial filing of such registration statement

On January 12, 2018, the Company, pursuant to the Rockwater Registration Rights Agreement, filed with the SEC a shelf registration statement registering for resale of 6,653,777 shares of Class A Common Stock into which certain of the outstanding shares of Class A-2 Common Stock registered under such registration statement were convertible. Pursuant to the Company’s Third Amended and Restated Certificate of Incorporation, upon the effectiveness of this registration statement on March 29, 2018, each outstanding share of Class A-2 Common Stock converted automatically into a share of Class A Common Stock on a one-for-one basis. No shares of Class A-2 Common Stock are currently outstanding.

Tax receivable agreements:  In connection with the Company’s restructuring at the Select 144A Offering, Select Inc. entered into two tax receivable agreements (the “Tax Receivable Agreements”) with Legacy Owner Holdco and certain other affiliates of the then-holders of SES Holdings LLC Units (each such person and any permitted transferee thereof, a “TRA Holder” and together, the “TRA Holders”). On July 18, 2017, the Company’s board of directors approved amendments to each of the Tax Receivable Agreements. See Note 12—Related Party Transactions for further discussion.

Basis of presentation:  The accompanying unaudited interim consolidated financial statements of the Company have been prepared in accordance with generally accepted accounting principles in the United States (“GAAP”) and pursuant to the rules and regulations of the SEC. These unaudited interim consolidated financial statements have been prepared in accordance with the instructions to Form 10-Q and, therefore, do not include all disclosures required for financial statements prepared in conformity with GAAP.

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This Form 10-Q relates to the three and six months ended June 30, 2018 (the “Current Quarter” and the “Current Period”, respectively) and the three and six months ended June 30, 2017 (the “Prior Quarter” and the “Prior Period”, respectively). The Company’s annual report on Form 10-K for the year ended December 31, 2017 (the “2017 Form 10-K”) filed with the SEC on March 19, 2018, includes certain definitions and a summary of significant accounting policies and should be read in conjunction with this Form 10-Q. All material adjustments (consisting solely of normal recurring adjustments) which, in the opinion of management, are necessary for a fair statement of the results for the interim periods have been reflected. The results for the Current Quarter and the Current Period are not necessarily indicative of the results to be expected for the full year.

The unaudited interim consolidated financial statements include the accounts of the Company and all of its majority‑owned or controlled subsidiaries. All significant intercompany accounts and transactions have been eliminated in consolidation.

For investments in subsidiaries that are not wholly owned, but where the Company exercises control, the equity held by the minority owners and their portion of net income or loss are reflected as noncontrolling interests. Investments in entities in which the Company exercises significant influence over operating and financial policies are accounted for using the equity method, and investments in entities for which the Company does not have significant control or influence are accounted for using the cost method. As of June 30, 2018, the Company has no equity method investees and one cost method investee. The Company’s investments are reviewed for impairment whenever events or circumstances indicate that the carrying value may not be recoverable. When circumstances indicate that the fair value of its investment is less than its carrying value and the reduction in value is other than temporary, the reduction in value is recognized in earnings. During the Current Period, the Company determined that its cost method investee was no longer fully recoverable and was written down to its estimated fair value of $0.5 million. The impairment expense of $2.0 million is included in impairment of investment within the consolidated statements of operations.

Reclassifications:Certain reclassifications have been made to the Company’s prior period consolidated financial information in order to conform to the current period presentation. These presentation changes did not impact the Company’s consolidated net income, total assets, total liabilities or total stockholders’ equity.

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NOTE 2—SIGNIFICANT ACCOUNTING POLICIES

Significant accounting policies: The Company’s significant accounting policies are disclosed in Note 2 of the consolidated financial statements for the year ended December 31, 2017 included in the Company’s most recent Annual Report on Form 10-K. There have been no significant changes in such policies or the application of such policies during the Current Period.

Use of estimates:  The preparation of consolidated financial statements in conformity with 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.

On an ongoing basis, the Company evaluates its estimates, including those related to recoverability of long‑lived assets and intangibles, useful lives used in depreciation and amortization, uncollectible accounts receivable, income taxes, self‑insurance liabilities, share‑based compensation and contingent liabilities. The Company bases its estimates on historical and other pertinent information that are believed to be reasonable under the circumstances. The accounting estimates used in the preparation of the consolidated financial statements may change as new events occur, as more experience is acquired, as additional information is obtained and as the Company’s operating environment changes.

Asset retirement obligations:  The following table describes the changes to the Company’s asset retirement obligation (ARO) liability for the Current Period:

	For the six months ended June 30, 2018
	(in thousands)
Balance at beginning of Current Period	$	1,846
Accretion expense, included in depreciation and amortization expense		97
Change in estimate		386
Divestitures		(508)
Balance at end of Current Period	$	1,821

We review the adequacy of our asset retirement obligation liabilities whenever indicators suggest that the estimated cash flows underlying the liabilities have changed. The Company’s ARO liabilities are included in accrued expenses and other current liabilities and other long term liabilities in the accompanying consolidated balance sheets for the six months ended June 30, 2018 and year ended December 31, 2017.

Change in depreciable lives of property and equipment: In accordance with its policy, the Company reviews the estimated useful lives of its fixed assets on an ongoing basis. This most recent review, conducted in first quarter 2018, indicated that the economic lives of certain assets were longer than the historic asset lives previously used by the Company. As a result, effective January 1, 2018, the Company changed its estimates of the useful lives of certain assets included in vehicles and equipment and machinery and equipment to better reflect the estimated periods during which these assets will remain in service. The average estimated useful lives of the assets impacted in the vehicles and equipment category increased from 6.0 to 8.1 years while the average estimated useful lives of assets impacted in machinery and equipment increased from 5.5 years to 6.9 years. The change in the estimated useful lives of fixed assets was implemented on a prospective basis and does not require restatement of previously reported depreciation and amortization expense. For the Current Quarter the effect of this change in accounting estimate was to reduce depreciation and amortization expense by $4.8 million, increase net income by $4.6 million and increase basic and diluted earnings per share by $0.04 attributable to our stockholders. For the Current Period the effect of this change in accounting estimates was to reduce depreciation and amortization expense by $9.5 million, increase net income by $9.3 million and increase basic and diluted earnings per share by $0.09 attributable to our stockholders.

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Emerging Growth Company status:  Under the Jumpstart Our Business Startups Act of 2012 (the “JOBS Act”), the Company is an “emerging growth company,” or an “EGC,” which allows the Company to have an extended transition period for complying with new or revised accounting standards pursuant to Section 107(b) of the JOBS Act. The Company intends to take advantage of all of the reduced reporting requirements and exemptions, including the longer phase‑in periods for the adoption of new or revised financial accounting standards under Section 107 of the JOBS Act until the Company is no longer an emerging growth company. The Company’s election to use the phase‑in periods permitted by this election may make it difficult to compare the Company’s financial statements to those of non‑emerging growth companies and other emerging growth companies that have opted out of the longer phase‑in periods under Section 107 of the JOBS Act and who will comply with new or revised financial accounting standards. 

The Company will lose its emerging growth company status as of December 31, 2018, as the market value of our common stock held by non-affiliates was greater than $700 million as of June 30, 2018.

Recent accounting pronouncements:  In May 2014, the Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update (“ASU”) 2014-09, Revenue from Contracts with Customers, which supersedes the revenue recognition requirements in Revenue Recognition (Topic 605), and requires entities to recognize revenue in a way that depicts the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled to in exchange for those goods or services. In August 2015, the FASB deferred the effective date by one year to annual reporting periods beginning after December 15, 2017, including interim reporting periods within that reporting period. As the Company will lose its EGC status on December 31, 2018, the ASU will become effective for calendar year 2018 at that time. The Company does not expect the adoption of the ASU or related ASU’s 2016-08, 2016-10, 2016-12 and 2016-20, will have a material impact on its consolidated financial statements and is evaluating the impact on the related disclosures and internal controls over financial reporting. The Company will use the modified retrospective method upon adoption of the ASU.

In February 2016, the FASB issued ASU 2016-02, Leases, which modifies the lease recognition requirements and requires entities to recognize the assets and liabilities arising from leases on the balance sheet and to disclose key qualitative and quantitative information about the entity’s leasing arrangements. Based on the original guidance in ASU 2016-02, lessees and lessors would have been required to recognize and measure leases at the beginning of the earliest period presented using a modified retrospective approach, including a number of optional practical expedients. In July 2018, the FASB issued ASU No. 2018-11, Leases (ASC 842): Targeted Improvements, which provides entities with an option to apply the guidance prospectively, instead of retrospectively, and allows for other classification provisions. ASU 2016-02 is effective for annual reporting periods beginning after December 15, 2018, including interim periods within those fiscal years, with early adoption permitted. As the Company will lose its EGC status on December 31, 2018, the ASU will become effective January 1, 2019. The Company currently anticipates that it will elect to recognize its lease assets and liabilities on a prospective basis, beginning on January 1, 2019, using an optional transition method. The adoption of these ASU’s will have an impact on how the Company’s consolidated balance sheets, statements of operations, cash flows, and disclosures contained in its notes to consolidated financial statements will be presented; however, because the Company is currently evaluating the impact of these ASU’s and, ASU 2018-01, Land Easements, it is unable to quantify the overall impact at this time.

In March 2016, the FASB issued ASU 2016-09, Improvements to Employee Share-Based Payment Accounting, which is intended to simplify several aspects of the accounting for share‑based payment award transactions. ASU 2016-09 was effective for annual reporting periods beginning after December 15, 2016, and interim periods within those annual periods. As an EGC utilizing the extended transition period for new accounting pronouncements, this pronouncement was effective for annual reporting periods beginning after December 15, 2017, and interim periods within fiscal years beginning after December 15, 2018. As the Company will lose its EGC status on December 31, 2018, the ASU will become effective for calendar year 2018 at that time. Certain amendments in this update should be applied prospectively, while other amendments in the update should be applied retrospectively, with early adoption permitted in any interim or annual period. The Company is currently evaluating the impact that the new accounting guidance will have on its consolidated financial statements and related disclosures.

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In August 2016, the FASB issued ASU 2016-15, Classification of Certain Cash Receipts and Cash Payments, which amends eight specific cash flow issues with the objective of reducing diversity in practice. ASU 2016-15 was effective for annual reporting periods beginning after December 15, 2017, and interim periods within those fiscal years. As an EGC utilizing the extended transition period for new accounting pronouncements, this pronouncement is effective for annual reporting periods beginning after December 15, 2018, and interim periods within fiscal years beginning after December 15, 2019. As the Company will lose its EGC status on December 31, 2018, the ASU will become effective for calendar year 2018 at that time. The amendments in this ASU should be applied using a retrospective approach. The Company is currently evaluating the impact that the new accounting guidance will have on its consolidated financial statements and related disclosures.

In January 2017, the FASB issued ASU 2017-01, Clarifying the Definition of a Business, with the objective of adding guidance to assist entities with evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. This update was effective for fiscal years and interim periods within fiscal years beginning after December 15, 2017. As an EGC utilizing the extended transition period for new accounting pronouncements, this pronouncement is effective for annual reporting periods beginning after December 15, 2018, and interim periods within fiscal years beginning after December 15, 2019. As the Company will lose its EGC status on December 31, 2018, the ASU will become effective for calendar year 2018 at that time. The amendments in this ASU should be applied prospectively. The Company does not expect the adoption of the ASU will have a material impact on its consolidated financial statements and related disclosures.

In January 2017, the FASB issued ASU 2017-04, Simplifying the Test for Goodwill Impairment. This pronouncement removes Step 2 of the goodwill impairment test, which requires a hypothetical purchase price allocation. A goodwill impairment will now be the amount by which a reporting unit’s carrying value exceeds its fair value, not to exceed the carrying amount of goodwill. This update is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2019. The amendments in this ASU should be applied prospectively. The Company is currently evaluating the impact that the new accounting guidance will have on its consolidated financial statements and related disclosures.

In May 2017, the FASB issued ASU 2017-09, Scope of Modification Accounting. This pronouncement provides guidance about which changes to the terms and conditions of a share-based payment award require an entity to apply modification accounting in ASC 718. The pronouncement should be applied prospectively to an award modified on or after the adoption date. The Company adopted this ASU in 2018, and the adoption of this guidance did not materially affect its consolidated financial statements and related disclosures.

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NOTE 3— ACQUISITIONS

Business combinations

Rockwater Merger 

On November 1, 2017, the Company completed the Rockwater Merger in which the Company combined with Rockwater. Total consideration was $620.2 million based on the closing price of the Company’s shares of Class A Common Stock on November 1, 2017. Consideration transferred consisted of shares of Class A Common Stock, shares of Class A-2 Common Stock, shares of Class B Common Stock, and SES Holdings LLC Units. Consideration transferred also included the Company’s previously held interest in Rockwater, which was acquired as consideration in a sale of assets by Select’s predecessor to Rockwater’s predecessor in 2008 prior to the contribution of those assets to Rockwater and the related conversion of the ownership interests received by Select’s predecessor to ownership interests in Rockwater in 2011, and the fair value of Rockwater’s replaced share-based payments attributed to pre-acquisition service. In addition, the Company’s previously held interest in Rockwater was cancelled pursuant to the Merger Agreement. The previously held interest in Rockwater was previously included in other assets in the consolidated balance sheet. It was remeasured to a fair value of $2.3 million, which resulted in a gain of $1.2 million recognized in the fourth quarter of 2017 in other income in the consolidated statements of operations. For the Current Quarter and the Current Period, the Company expensed $1.7 million and $3.7 million of transaction-related costs, respectively, which are included in selling, general and administrative expenses within the consolidated statements of operations.

The Rockwater Merger was accounted for as a business combination under the acquisition method of accounting. Assets acquired and liabilities assumed in the Rockwater Merger were recorded at their estimated fair values as of the merger date. The Company has not finalized these estimates; therefore, the fair value estimates set forth below are subject to adjustment during a one-year measurement period following the merger date. The final allocation of purchase consideration could include changes in the estimated fair value of working capital, property and equipment, intangible assets, other long-term assets, deferred tax liabilities and other long-term liabilities. Adjustments in the purchase price allocation may require a change in the amount allocated to goodwill during the period in which the adjustments are determined.

When determining the fair values of assets acquired and liabilities assumed, management made significant estimates, judgments and assumptions. The Company also engaged third-party valuation experts to assist in the purchase price allocation and the recorded valuation of property and equipment. The Company has received reports from these experts including estimates, judgments and assumptions for the valuation of the tangible and intangible assets acquired and liabilities assumed. These reports along with the analysis and expertise of management have formed the basis for the preliminary allocation. Detailed analysis and review of the assets acquired, including confirmation of the condition, existence and utility of the assets is currently ongoing. Management believes that the current information provides a reasonable basis for estimating fair values of assets acquired and liabilities assumed. These estimates, judgments and assumptions are subject to change and should be treated as preliminary as purchase accounting is subject to a twelve month measurement period adjustment to reflect any new information about the facts and circumstances that existed as of the acquisition date, if such facts and circumstances would have affected the measurement of the amounts recognized as of the acquisition date. Included in the working capital figure in the table below is accounts receivable acquired with a fair value of $196.9 million, and a gross contractual amount of $199.1 million. The Company expects $2.2 million of the gross contractual amount to be uncollectible. Management estimated that total consideration paid exceeded the fair value of the net assets acquired and liabilities assumed by $252.2 million, which excess was recognized as goodwill. The goodwill recognized was primarily attributable to synergies driven by expanding into new geographies and service offerings, strengthening existing service lines, acquiring an established, trained workforce and expected cost reductions. Goodwill of $235.9 million and $16.3 million was allocated to the Company’s Water Solutions and Oilfield Chemicals segments, respectively.

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The following table summarizes the consideration transferred and the estimated fair value of identified assets acquired and liabilities assumed at the date of acquisition:  

Preliminary purchase price allocation	Amount
Consideration  transferred	(in thousands)
Class A Common Stock (25,914,260 shares)	$	423,957
Class A-2 Common Stock (6,731,845 shares)		110,133
Class B Common Stock (4,356,477 shares) and SES Holdings common units issued (4,356,477 units)		71,272
Fair value of previously held interest in Rockwater		2,310
Fair value of Rockwater share-based awards attributed to pre-acquisition service		12,529
Total consideration transferred		620,201
Less: identifiable assets acquired and liabilities assumed
Working capital(1)		143,571
Property and equipment(2)		183,975
Intangible assets
Customer relationships		89,007
Trademarks and patents		31,215
Non-compete agreements		3,810
Other long-term assets		62
Deferred tax liabilities		(408)
Long-term debt		(80,555)
Other long-term liabilities		(2,650)
Total identifiable net assets acquired		368,027
Goodwill		252,174
Fair value allocated to net assets acquired	$	620,201

(1) During the Current Period, the Company obtained additional information related to working capital which led to a decrease of $3.3 million and a corresponding increase in goodwill of $3.3 million compared to the estimated fair values included in the 2017 Form 10-K.

(2) During the Current Period, the Company obtained additional information related to property and equipment which led to a decrease of $1.6 million and a corresponding increase in goodwill of $1.6 million compared to the estimated fair values included in the 2017 Form 10-K.

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Resource Water Acquisition

On September 15, 2017, the Company completed its acquisition (the “Resource Water Acquisition”) of Resource Water Transfer Services, L.P. and certain other affiliated assets (collectively, “Resource Water”). Resource Water provides water transfer services to exploration and production (“E&P”) operators in West Texas and East Texas. Resource Water’s assets include 24 miles of layflat hose as well as numerous pumps and ancillary equipment required to support water transfer operations. Resource Water has longstanding customer relationships across its operating regions which are viewed as strategic to the Company’s water solutions business. 

The total consideration for the Resource Water Acquisition was $9.0 million, with $6.6 million paid in cash and $2.4 million paid in shares of Class A Common Stock valued at $15.17 per share, subject to customary post‑closing adjustments. The Company funded the cash portion of the consideration for the Resource Water Acquisition with $6.6 million of cash on hand. The Resource Water Acquisition was accounted for as a business combination under the acquisition method of accounting. The allocation of the consideration transferred was based on management’s estimates, judgments and assumptions. When determining the fair values of assets acquired and liabilities assumed, management made significant estimates, judgments and assumptions. These estimates, judgments and assumptions are subject to change upon final valuation and should be treated as preliminary values. Working capital estimates are based on provisional amounts. Management estimated that total consideration paid exceeded the fair value of the net assets acquired by $1.9 million, which excess was recognized as goodwill. The goodwill recognized was attributable to Resource Water’s assembled workforce as well as synergies related to the Company’s comprehensive water solutions strategy. The goodwill was included in the assets of the Company’s Water Solutions segment. The following table summarizes the consideration transferred and the estimated fair value of identified assets acquired and liabilities assumed at the date of acquisition:

Purchase price allocation	Amount
Consideration  transferred	(in thousands)
Cash paid	$	6,586
Class A Common Stock (156,909 shares)		2,380
Total consideration transferred		8,966
Less: identifiable assets acquired and liabilities assumed
Working capital		1,189
Fixed assets		3,485
Customer relationship intangible assets		1,933
Other intangible assets		465
Total identifiable net assets acquired		7,072
Goodwill		1,894
Fair value allocated to net assets acquired	$	8,966

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GRR Acquisition

On March 10, 2017, the Company completed its acquisition (the “GRR Acquisition”) of Gregory Rockhouse Ranch, Inc. and certain other affiliated entities and assets (collectively, the “GRR Entities”). The GRR Entities provide water and water‑related services to E&P companies in the Permian Basin and own and have rights to a vast array of fresh, brackish and effluent water sources with access to significant volumes of water annually and water transport infrastructure, including over 1,200 miles of temporary and permanent pipeline infrastructure and related storage facilities and pumps, all located in the northern Delaware Basin portion of the Permian Basin.

The total consideration for the GRR Acquisition was $59.6 million, subject to customary post-closing adjustments, with $53.0 million paid in cash, $1.1 million in assumed tax liabilities and $5.5 million paid to the sellers in shares of Class A Common Stock valued at $20.00 per share. The Company funded the cash portion of the consideration for the GRR Acquisition with $19.0 million of cash on hand and $34.0 million of borrowings under the Company’s Previous Credit Facility. For the six months ended June 30, 2017, the Company expensed $1.0 million of transaction-related costs, which are included in selling, general and administrative expenses within the consolidated statements of operations. The GRR Acquisition was accounted for as a business combination under the acquisition method of accounting. When determining the fair values of assets acquired and liabilities assumed, management made significant estimates, judgments and assumptions. Management estimated that consideration paid exceeded the fair value of the net assets acquired. Therefore, goodwill of $12.0 million was recorded. The goodwill recognized was primarily attributable to synergies related to the Company’s comprehensive water solutions strategy that are expected to arise from the GRR Acquisition and was attributable to the Company’s Water Solutions segment. The assets acquired and liabilities assumed and the results of operations of the acquired business are included in the Company’s Water Solutions segment. The following table summarizes the consideration transferred and the estimated fair value of identified assets acquired and liabilities assumed at the date of acquisition:

Purchase price allocation	Amount
Consideration  transferred	(in thousands)
Cash paid	$	53,032
Class A Common Stock (274,998 shares)		5,500
Assumed liabilities		1,106
Total consideration transferred		59,638
Less: identifiable assets acquired and liabilities assumed
Working capital		7,728
Fixed assets		13,225
Customer relationship intangible assets		21,484
Other intangible assets		5,152
Total identifiable net assets acquired		47,589
Goodwill		12,049
Fair value allocated to net assets acquired	$	59,638

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The GRR Acquisition contributed revenue and net income of $11.1 million and $1.7 million, respectively, to the consolidated results of the Company for the period from March 10, 2017, the date of completion of the GRR Acquisition, to June 30, 2017.

The following unaudited consolidated pro forma information is presented as if the Rockwater Merger, the Resource Water Acquisition and the GRR acquisition had occurred on January 1, 2017:

	Pro Forma
	Three months ended June 30,		Six months ended June 30,
	2017		2017
	(unaudited)
	(in thousands)
Revenue	$	303,047	$	532,282
Net loss	$	(9,393)	$	(33,537)
Less: net loss attributable to noncontrolling interests(1)		3,780		13,564
Net loss attributable to Select Energy Services, Inc.(1)	$	(5,613)	$	(19,973)

(1) The allocation of net loss attributable to noncontrolling interests and Select Inc. gives effect to the equity structure as of June 30, 2017 as though the Select 144A Offering, the IPO, the Rockwater Merger, the Resource Water Acquisition and the GRR Acquisition occurred as of January 1, 2017. However, the calculation of pro forma net loss does not give effect to any other pro forma adjustments for the Select 144A Offering or the subsequent IPO.

The unaudited pro forma amounts above have been calculated after applying the Company’s accounting policies and adjusting the Rockwater Merger, Resource Water Acquisition and GRR Acquisition results to reflect the increase to depreciation and amortization that would have been charged assuming the fair value adjustments to property, plant and equipment and intangible assets had been applied from January 1, 2017 and other related pro forma adjustments.

The pro forma amounts do not include any potential synergies, cost savings or other expected benefits of the Rockwater Merger, the Resource Water Acquisition or the GRR Acquisition, and are presented for illustrative purposes only and are not necessarily indicative of results that would have been achieved if the Rockwater Merger, the Resource Water Acquisition and the GRR Acquisition had occurred as of January 1, 2017 or of future operating performance. 

Asset acquisitions

On May 30, 2017 the Company completed the acquisition of automated manifold intellectual property and related assets from Data Automated Water Systems, LLC (the “DAWS Acquisition”) for $4.0 million.  This acquisition was paid with $2.0 million of cash and 128,370 shares of Class A Common Stock valued at $2.0 million. The DAWS Acquisition resulted in fixed assets of $1.8 million, patents of $1.9 million and software of $0.3 million.

On June 21, 2017 the Company completed the acquisition of fixed assets from Tex-Star Water Services, LLC (the “TEX Acquisition”) for $4.2 million in cash.

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NOTE 4—EXIT AND DISPOSAL ACTIVITIES

Due to a reduction in industry activity that began in 2014, the Company made the decision during the year ended December 31, 2016 to close 15 facilities and consolidate operations for the purpose of improving operating efficiencies. In addition, the Company has decided to consolidate or close additional facilities in relation to its Rockwater Merger.  During the Current Period, the Company recorded $3.1 million of charges related to exit and disposal activities. During the Prior Period, the Company recorded $2.3 million of charges related to exit and disposal activities and reclassified $0.2 million of deferred rent related to accrued lease obligations related to exited facilities. The Company had a remaining balance of $22.0 million, inclusive of a short‑term balance of $2.8 million in accrued expenses and other current liabilities, as of June 30, 2018 related to accrued lease obligations and terminations at exited facilities within its Water Solutions segment. As of June 30, 2018, the Company has completed its exit from underperforming facilities but will continue to make non‑cancelable lease payments for related facilities through the year ended 2027. The Company’s abandonment of these facilities is not a part of a formalized exit plan. The changes in the abandoned lease obligations for the Current Period and Prior Period are as follows:

			Provision during  the		Usage during the
	Balance as of		six months ended		six months ended		Balance as of
	December 31, 2017		June 30, 2018		June 30, 2018		June 30, 2018
	(in thousands)
Lease obligations and terminations	$	21,350	$	2,807	$	3,465	$	20,692
Reclassification of deferred rent		1,254						1,332
Total	$	22,604					$	22,024

			Provision during  the		Usage during the
	Balance as of		six months ended		six months ended		Balance as of
	December 31, 2016		June 30, 2017		June 30, 2017		June 30, 2017
	(in thousands)
Lease obligations and terminations	$	18,000	$	2,281	$	1,384	$	18,897
Reclassification of deferred rent		1,069						1,254
Total	$	19,069					$	20,151

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NOTE 5—INVENTORIES

Inventories, which are comprised of chemicals and materials available for resale and parts and consumables used in operations, are valued at the lower of cost and net realizable value, with cost determined under the weighted-average method. The significant components of inventory are as follows:

	June 30, 2018		December 31, 2017
	(in thousands)
Raw materials	$	16,161	$	11,462
Finished goods		32,961		29,674
Materials and supplies		2,952		3,462
		52,074		44,598
Inventory reserve		(394)		—
	$	51,680	$	44,598

During the Current Quarter and the Current Period, the Company recorded charges to the reserve for excess and obsolete inventory in the amount of $0.1 million and $0.4 million, respectively, which were recognized within costs of revenue on the accompanying consolidated statements of operations. No charges were recorded during the Prior Quarter or Prior Period. The reserve for excess and obsolete inventories is determined based on the Company’s historical usage of inventory on hand, as well as future expectations, and the amount necessary to reduce the cost of the inventory to its estimated net realizable value.

NOTE 6—PROPERTY AND EQUIPMENT

Property and equipment consists of the following as of June  30, 2018 and December 31, 2017:

	June 30, 2018		December 31, 2017
	(in thousands)
Land	$	14,402	$	15,286
Buildings and leasehold improvements		98,376		99,222
Vehicles and equipment		72,529		70,537
Vehicles and equipment - capital lease		2,628		2,810
Machinery and equipment		715,302		716,420
Machinery and equipment - capital lease		545		544
Computer equipment and software		13,082		12,466
Computer equipment and software - capital lease		356		356
Office furniture and equipment		4,320		4,320
Disposal wells		63,294		67,805
Other		497		497
Construction in progress		78,516		44,732
		1,063,847		1,034,995
Less accumulated depreciation and impairment		(580,102)		(560,886)
Total property and equipment, net	$	483,745	$	474,109

Long‑lived assets are evaluated for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. During the Current Quarter,  the Company reviewed certain fluid disposal machinery and equipment used in our fluid hauling and disposal services that are included in our Water Solutions segment. Due to the condition of the equipment, the Company determined that long-lived assets with a carrying value of $2.3 million were no longer recoverable and were written down to their estimated fair value of zero.

During the Current Quarter,  Prior Quarter,  Current Period and Prior Period, depreciation expense was $27.9 million, $20.3 million, $55.4 million and $39.9 million, respectively.

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As a result of the Rockwater Merger, the Company acquired various capital leases for certain vehicles, machinery and equipment that expire at various dates during the next five years. Depreciation of assets held under capital leases for the Current Quarter and the Current Period was $0.3 million and $0.7 million, respectively, and is included in depreciation and amortization expense in the accompanying consolidated statements of operations. The Company had no capital lease obligations as of June 30, 2017.

NOTE 7—GOODWILL AND OTHER INTANGIBLE ASSETS

Goodwill is evaluated for impairment on at least an annual basis, or more frequently if indicators of impairment exist. The annual impairment tests are based on Level 3 inputs. The changes in the carrying amounts of goodwill by reportable segment as of June 30, 2018 and December 31, 2017 are as follows:

	Water		Oilfield		Wellsite
	Solutions		Chemicals		Services		Total
	(in thousands)
Balance as of December 31, 2016	$	—	$	—	$	12,242	$	12,242
Additions		245,542		15,637		—		261,179
Balance as of December 31, 2017		245,542		15,637		12,242		273,421
Measurement period adjustment(1)		4,282		656		—		4,938
Balance as of June 30, 2018	$	249,824	$	16,293	$	12,242	$	278,359

(1) See Note 3―Acquisitions for additional information.

The components of other intangible assets as of June 30, 2018 and December 31, 2017 are as follows:

	As of June 30, 2018						As of December 31, 2017
	Gross		Accumulated		Net		Gross		Accumulated		Net
	Value		Amortization		Value		Value		Amortization		Value
	(in thousands)						(in thousands)
Customer relationships	$	169,250	$	63,569	$	105,681	$	169,250	$	57,836	$	111,414
Patents and trademarks		33,544		915		32,629		33,544		414		33,130
Other		14,704		4,106		10,598		14,704		3,182		11,522
Total other intangible assets	$	217,498	$	68,590	$	148,908	$	217,498	$	61,432	$	156,066

The Company had $5.3 million in indefinite-lived water rights as of both June 30, 2018 and December 31, 2017 and are included within the other component in the tables above. The Company had $23.4 million in indefinite-lived trademarks as of both June 30, 2018 and December 31, 2017 and are included in the patents and trademarks component in the table above.

Amortization expense was $3.3 million, $2.6 million,  $7.2 million and $4.8 million for the Current Quarter, Prior Quarter, Current Period and Prior Period, respectively. Annual amortization of intangible assets for the next five years and beyond is as follows:

	Amount
	(in thousands)
Remainder of 2018	$	5,846
2019		11,595
2020		11,301
2021		10,118
2022		9,904
Thereafter		71,428

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NOTE 8—DEBT

Credit facility and revolving line of credit

Our subsidiary, Select Energy Services, LLC’s (“Select LLC”) previous credit facility (the “Previous Credit Facility”), was amended on December 20, 2016 to extend the maturity date from February 28, 2018 to February 28, 2020 and reduce the revolving line of credit to $100.0 million. On November 1, 2017, in connection with the Closing (defined below), SES Holdings entered into the Credit Agreement, the obligations of SES Holdings and Select LLC under the Previous Credit Facility were repaid in full and the Previous Credit Facility was terminated.

On November 1, 2017, in connection with the closing of the Rockwater Merger (the “Closing”), SES Holdings and Select LLC entered into a $300.0 million senior secured revolving credit facility (the “Credit Agreement”), by and among SES Holdings, as parent, Select LLC, as Borrower and certain of SES Holdings’ subsidiaries, as guarantors, each of the lenders party thereto and Wells Fargo Bank, N.A., as administrative agent, issuing lender and swingline lender (the “Administrative Agent”). The Credit Agreement also has a sublimit of $40.0 million for letters of credit and a sublimit of $30.0 million for swingline loans. Subject to obtaining commitments from existing or new lenders, the Company has the option to increase the maximum amount under the Credit Agreement by $150.0 million during the first three years following the closing. The maturity date of the Credit Agreement is the earlier of (a) November 1, 2022, and (b) the earlier termination in whole of the Commitments pursuant to Section 2.1(b) of Article VII of the Credit Agreement.

The Credit Agreement permits extensions of credit up to the lesser of $300.0 million and a borrowing base that is determined by calculating the amount equal to the sum of (i) 85% of the Eligible Billed Receivables (as defined in the Credit Agreement), plus (ii) 75% of Eligible Unbilled Receivables (as defined in the Credit Agreement), provided that this amount will not equal more than 35% of the borrowing base, plus (iii) the lesser of (A) the product of 70% multiplied by the value of Eligible Inventory (as defined in the Credit Agreement) at such time and (B) the product of 85% multiplied by the Net Recovery Percentage (as defined in the Credit Agreement) identified in the most recent Acceptable Appraisal of Inventory (as defined in the Credit Agreement), multiplied by the value of Eligible Inventory at such time, provided that this amount will not equal more than 30% of the borrowing base, minus (iv) the aggregate amount of Reserves (as defined in the Credit Agreement), if any, established by the Administrative Agent from time to time, including, if any, the amount of the Dilution Reserve (as defined in the Credit Agreement). The borrowing base is calculated on a monthly basis pursuant to a borrowing base certificate delivered by Select LLC to the Administrative Agent.

Borrowings under the Credit Agreement bear interest, at Select LLC’s election, at either the (a) one-, two-, three- or six-month LIBOR (“Eurocurrency Rate”) or (b) the greatest of (i) the federal funds rate plus 0.5%, (ii) the one-month Eurocurrency Rate plus 1% and (iii) the Administrative Agent’s prime rate (the ”Base Rate”), in each case plus an applicable margin. Interest is payable monthly in arrears. The applicable margin for Eurocurrency Rate loans ranges from 1.50% to 2.00% and the applicable margin for Base Rate loans ranges from 0.50% to 1.00%, in each case, depending on Select LLC’s average excess availability under the Credit Agreement. During the continuance of a bankruptcy event of default, automatically and during the continuance of any other default, upon the Administrative Agent’s or the required lenders’ election, all outstanding amounts under the Credit Agreement will bear interest at 2.00% plus the otherwise applicable interest rate.

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Level	Average Excess Availability	Base Rate Margin	Eurocurrency Rate Margin
I	< 33% of the commitments	1.00%	2.00%
II	< 66.67% of the commitments and ≥ 33.33% of the commitments	0.75%	1.75%
III	≥ 66.67% of the commitments	0.50%	1.50%

Level	Average Revolver Usage	Unused Line Fee Percentage
I	≥ 50% of the commitments	0.250%
II	< 50% of the commitments	0.375%

The obligations under the Credit Agreement are guaranteed by SES Holdings and certain subsidiaries of SES Holdings and Select LLC and secured by a security interest in substantially all of the personal property assets of SES Holdings, Select LLC and their domestic subsidiaries.

The Credit Agreement contains certain customary representations and warranties, affirmative and negative covenants and events of default. If an event of default occurs and is continuing, the lenders may declare all amounts outstanding under the Credit Agreement to be immediately due and payable.

In addition, the Credit Agreement restricts SES Holdings’ and Select LLC’s ability to make distributions on, or redeem or repurchase, its equity interests, except for certain distributions, including distributions of cash so long as, both at the time of the distribution and after giving effect to the distribution, no default exists under the Credit Agreement and either (a) excess availability at all times during the preceding 30 consecutive days, on a pro forma basis and after giving effect to such distribution, is not less than the greater of (1) 25% of the lesser of (A) the maximum revolver amount and (B) the then-effective borrowing base and (2) $37.5 million or (b) if SES Holdings’ fixed charge coverage ratio is at least 1.0 to 1.0 on a pro forma basis, and excess availability at all times during the preceding 30 consecutive days, on a pro forma basis and after giving effect to such distribution, is not less than the greater of (1) 20% of the lesser of (A) the maximum revolver amount and (B) the then-effective borrowing base and (2) $30.0 million. Additionally, the Credit Agreement generally permits Select LLC to make distributions to allow Select Inc. to make payments required under the existing Tax Receivable Agreements.

The Credit Agreement also requires SES Holdings to maintain a fixed charge coverage ratio of at least 1.0 to 1.0 at any time availability under the Credit Agreement is less than the greater of (i) 10% of the lesser of (A) the maximum revolver amount and (B) the then-effective borrowing base and (ii) $15.0 million and continuing through and including the first day after such time that availability under the Credit Agreement has equaled or exceeded the greater of (i) 10% of the lesser of (A) the maximum revolver amount and (B) the then-effective borrowing base and (ii) $15.0 million for 60 consecutive calendar days.

Certain lenders party to the Credit Agreement and their respective affiliates have from time to time performed, and may in the future perform, various financial advisory, commercial banking and investment banking services for the Company and its affiliates in the ordinary course of business for which they have received and would receive customary compensation. In addition, in the ordinary course of their various business activities, such parties and their respective affiliates may make or hold a broad array of investments and actively trade debt and equity securities (or related derivative securities) and financial instruments (including bank loans) for their own account and for the accounts of their customers, and such investments and securities activities may involve the Company’s securities and/or instruments.

In addition, certain lenders party to the Previous Credit Facility are lenders under the Credit Agreement.

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The Company had $80.0 million and $75.0 million outstanding under the Credit Agreement as of June 30, 2018 and December 31, 2017, respectively. The weighted‑average interest rate of outstanding borrowings under the Credit Agreement was 3.966% and 3.319% as of June 30, 2018 and December 31, 2017, respectively. As of June 30, 2018 and December 31, 2017, the borrowing base under the Credit Agreement was $286.9 million and $262.1 million, respectively. The borrowing capacity under the Credit Agreement was reduced by outstanding letters of credit of $18.3 million and $19.8 million as of June 30, 2018 and December 31, 2017, respectively. The Company’s letters of credit have a variable interest rate between 1.50% and 2.00% based on the Company’s average excess availability as outlined above. The unused portion of the available borrowings under the Credit Agreement was $188.6 million at June 30, 2018.

Debt issuance costs are amortized to interest expense over the life of the debt to which they pertain. Total unamortized debt issuance costs as of June 30, 2018 and December 31, 2017 were $3.0 million and $3.3 million, respectively. As these debt issuance costs relate to a revolving line of credit, they are presented as a deferred charge within other assets on the consolidated balance sheet. Amortization expense related to debt issuance costs were $0.2 million, $0.3 million, $0.3 million and $0.6 million for the Current Quarter, Prior Quarter, Current Period and Prior Period, respectively.

The Company was in compliance with all debt covenants as of June 30, 2018.

NOTE 9—COMMITMENTS AND CONTINGENCIES

Litigation

The Company is subject to a number of lawsuits and claims arising out of the conduct of its business. The ability to predict the ultimate outcome of such matters involves judgments, estimates and inherent uncertainties. Based on a consideration of all relevant facts and circumstances, including applicable insurance coverage, it is not expected that the ultimate outcome of any currently pending lawsuits or claims against the Company will have a material adverse effect on its consolidated financial position, results of operations or cash flows; however, there can be no assurance as to the ultimate outcome of these matters.

Certain subsidiaries acquired in the Rockwater Merger are under investigation by the U.S. Attorney's Office for the Middle District of Pennsylvania and the U.S. Environmental Protection Agency (“U.S. EPA”). It is alleged that certain employees at some of the facilities altered emissions controls systems on 4% of the vehicles in the fleet in violation of the Clean Air Act. The Company is cooperating with the relevant authorities to resolve the matter. At this time no administrative, civil or criminal charges have been brought against the Company and the Company cannot estimate the possible fines and penalties that may be levied against the Company.

Self-Insured Reserves

We are self-insured up to certain retention limits with respect to workers’ compensation, general liability and vehicle liability matters. We maintain accruals for self-insurance retentions that we estimate using third-party data and claims history.

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NOTE 10—EQUITY‑BASED COMPENSATION

The SES Holdings 2011 Equity Incentive Plan, (“2011 Plan”) was approved by the board of managers of SES Holdings in April 2011. In conjunction with the Select 144A Offering, the Company adopted the Select Energy Services, Inc. 2016 Equity Incentive Plan (as amended from time to time, the “2016 Plan”) for employees, consultants and directors of the Company and its affiliates. Options that were outstanding under the 2011 Plan immediately prior to the Select 144A Offering were cancelled in exchange for new options granted under the 2016 Plan.

On July 18, 2017, the Select Inc. board of directors approved the First Amendment to the 2016 Plan (the “Equity Plan Amendment”), which clarifies the treatment of substitute awards under the 2016 Plan (including substitute awards that may be granted in connection with the Rockwater Merger) and allows for the assumption by the Company of shares eligible under any pre-existing stockholder-approved plan of an entity acquired by the Company or its affiliate (including the Rockwater Energy Solutions Inc. Amended and Restated 2017 Long Term Incentive Plan (the “Rockwater Equity Plan”)), in each case subject to the listing rules of the stock exchange on which Class A Common Stock is listed. The effectiveness of the Equity Plan Amendment was subject to approval by the Company's stockholders and the consummation of the transactions contemplated by the Merger Agreement for the Rockwater Merger. The Company’s consenting stockholders, who hold a majority of the outstanding common stock of the Company, approved the Equity Plan Amendment on July 18, 2017. The Equity Plan Amendment became effective on November 1, 2017 upon the consummation of the Rockwater Merger.

The maximum number of shares initially reserved for issuance under the 2016 Plan was 5,400,400 shares of Class A Common Stock, subject to adjustment in the event of recapitalization or reorganization, or related to forfeitures or the expiration of awards. Stock options are granted with terms not to exceed ten years. After giving effect to the Equity Plan Amendment, the maximum number of shares of Class A Common Stock reserved for issuance under the 2016 Plan is equal to (i) 5,400,400 shares plus (ii) 1,011,087 shares that became available on account of the assumption of the Rockwater Equity Plan, subject to adjustment in the event of recapitalization or reorganization, or related to forfeitures or the expiration of awards. The maximum number of shares described in the preceding sentence does not include 2,879,112 shares of Class A Common Stock related to substitute awards that were granted under the 2016 Plan following the conversion of outstanding equity awards originally granted under the Rockwater Equity Plan in accordance with the Merger Agreement.

Stock option awards

Stock options were granted with an exercise price equal to or greater than the fair market value of a share of Class A Common Stock as of the date of grant. The Company historically valued Class A Common Stock on a quarterly basis using a market approach that includes a comparison to publicly traded peer companies using earnings multiples based on their market values and a discount for lack of marketability. The fair value measurement relies on Level 3 inputs. The estimated fair value of its stock options is expensed over their vesting period, which is generally three years from the applicable date of grant. However, certain awards that were granted during the years ended December 31, 2017 and 2016 in exchange for cancelled awards were immediately vested and fully exercisable on the date of grant because they were either granted in exchange for the cancellation of outstanding options granted under the 2011 Plan or the Rockwater Equity Plan, as applicable, that were fully vested and exercisable prior to such cancellation.

The Company utilized the Monte Carlo simulation model to determine fair value of the options granted during January 2018, which incorporates assumptions to value equity‑based awards. The risk‑free interest rate is based on the U.S. Treasury yield curve in effect for the expected term of the option at the time of grant. The expected life of the options was based on the vesting period and term of the options awarded, which is ten years.

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The table below presents the assumptions used in determining the fair value of stock options granted during January 2018. The weighted‑average grant date fair value of stock options granted was $8.98.

	Assumptions
Underlying equity	$	20.50
Strike price	$	20.50 - 30.75
Dividend yield (%)		0.0	%
Risk free rate (%)		2.3	%
Volatility (%)		50.0	%
Expected term (years)		10.0

A summary of the Company’s stock option activity and related information as of and for the Current Period is as follows:

	For the six months ended June 30, 2018
				Weighted-average
		Weighted-average		Remaining Contractual	Aggregate Intrinsic
	Stock Options	Exercise Price		Term (Years)	Value (in thousands) (a)
Beginning balance, outstanding	3,495,935	$	14.12	8.7	$	5,998
Granted	584,846		26.02
Exercised	(37,209)		10.13
Forfeited	(29,626)		16.94
Expired	(38,611)		17.32
Ending balance, outstanding	3,975,335	$	15.85	5.0	$	6,566
Ending balance, exercisable	1,763,150	$	12.06	3.6	$	4,356
Non-vested at end of period	1,073,723	$	19.25

(a)Aggregate intrinsic value for stock options is based on the difference between the exercise price of the stock options and the quoted closing Class A Common Stock price of $14.53 as of June 29, 2018.  

The Company recognized $1.4 million, $0.5 million, $2.7 million and $1.0 million of compensation expense related to stock options during the Current Quarter, Prior Quarter, Current Period and Prior Period, respectively. As of June 30, 2018, there was $7.5 million of unrecognized equity-based compensation expense related to non-vested stock options. This cost is expected to be recognized over a weighted-average period of 1.5 years.

Restricted Stock Awards and Restricted Stock Units

The value of the restricted stock awards and restricted stock units issued was established by the market price of the Class A Common Stock on the date of grant and is being recorded as compensation expense ratably over the vesting term which is generally one to three years from the applicable date of grant. The Company recognized compensation expense of $1.2 million, $0.1 million, $2.1 million and $0.2 million related to the restricted stock awards and restricted stock units for the Current Quarter, Prior Quarter, Current Period and Prior Period, respectively. As of June 30, 2018, there was $8.3 million of unrecognized compensation expense with a weighted-average remaining life of 2.1 years related to unvested restricted stock awards and restricted stock units.

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A summary of the Company’s restricted stock awards activity and related information for the Current Period is as follows:

	For the six months ended June 30, 2018
		Weighted-average
	Restricted Stock Awards	Grant Date Fair Value
Non-vested at December 31, 2017	299,801	$	16.36
Granted	430,595		19.62
Vested	(137,824)		16.36
Forfeited	(18,640)		16.36
Non-vested at June 30, 2018	573,932	$	18.80

A summary of the Company’s restricted stock unit activity and related information for the Current Period is as follows:

	For the six months ended June 30, 2018
		Weighted-average
	Restricted Stock Units	Grant Date Fair Value
Non-vested at December 31, 2017	30,360	$	19.88
Granted	—		—
Vested	(27,860)		19.96
Non-vested at June 30, 2018	2,500	$	19.00

Performance Share Units (PSUs)

During 2018, the Company approved grants of performance share units (“PSUs”) that are subject to both performance-based and service-based vesting provisions. The number of shares of Class A Common Stock issued to a recipient upon vesting of the PSU will be calculated based on performance against certain metrics that relate to the Company’s return on asset  performance over the January 1, 2018 through December 31, 2020 performance period. The target number of shares of Class A Common Stock subject to each PSU is one; however, based on the achievement of performance criteria, the number of shares of Class A Common Stock that may be received in settlement of each PSU can range from zero to 1.75 times the target number. The PSUs become earned at the end of the performance period after the attainment of the performance level has been certified by the compensation committee, which will be no later than June 30, 2021, assuming the minimum performance metrics are achieved. The target PSUs that become earned PSUs during the performance period will be determined in accordance with the following table:

Return on Assets at Performance Period End Date	Percentage of Target PSUs Earned
Less than 9.6%	0%
9.6%	50%
12%	100%
14.4%	175%

Compensation expense related to the PSUs is determined by multiplying the number of shares of Class A Common Stock underlying such awards that, based on the Company’s estimate, are probable to vest, by the measurement-date (i.e., the last day of each reporting period date) fair value and recognized using the accelerated attribution method. The Company recognized compensation expense of $0.4 million and $0.6 million related to the PSUs for the Current Quarter and Current Period, respectively.

As of June 30, 2018, the fair value of outstanding PSUs issued was $4.0 million. The unrecognized compensation cost related to our unvested PSUs is estimated to be $3.4 million and is expected to be recognized over a weighted-average period of 2.5 years as of June 30, 2018.

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The following table summarizes the information about the performance share units that were outstanding at June 30, 2018:

Period Granted	Target Shares Outstanding at Beginning of Period	Target Shares Granted	Target Shares Vested	Target Shares Forfeited	Target Shares Outstanding at End of Period
2018	—	274,106	—	—	274,106
Total	—	274,106	—	—	274,106

Stock-Settled Incentive Awards

Effective May 17, 2018, Company approved grants of stock-settled incentive awards to certain key employees under the 2016 Equity Incentive Plan that are subject to both market-based and service-based vesting provisions. These awards will vest after a two-year service period and, if earned, settled in shares of the Company stock. The ultimate amount earned is based on the achievement of the market metrics, which is based on the stock price of the Company at the vesting date, for which payout could range from 0% to 200%. Any award not earned on the vesting date is forfeited. The target amount that becomes earned during the performance period will be determined in accordance with the following table:

Stock Price at Vesting Date(1)	Percentage of Target Amount Earned
Less than $20.00	0%
At least $20.00, but less than $25.00	100%
$25.00 or greater	200%

(1) The stock price at vesting date equals the greater of (i) the fair market value of a share of the Company’s stock on the vesting date, or (ii) the volume weighted average closing price of a share of the Company’s stock, as reported on the NYSE, for the 30 trading days preceding the vesting date.

The target amount of stock-settled incentive awards granted was $3.8 million. However, the ultimate settlement of the awards will be in shares of the Company’s stock with fair market value equal to the earned amount, which could range from 0% to 200% of the target amount depending on the stock price at vesting date.

Compensation expense associated with the stock-settled incentive awards is recognized ratably over the corresponding requisite service period. The fair value of the stock-settled incentive awards was determined using the Black-Scholes-Merton probability model. The key assumptions in the model included price, the expected volatility of our stock, risk-free interest rate is based on U.S. Treasury yield curve, cross-correlations between our and our self-determined peer companies’ asset, equity and debt-to-equity volatility.

During both the Current Quarter and the Current Period, the Company recognized stock compensation expense of $0.1 million related to the stock-settled incentive awards. The unrecognized compensation cost related to our unvested stock-settled incentive awards is estimated to be $1.4 million and is expected to be recognized over approximately 22 months as of June 30, 2018.

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Employee Stock Purchase Plan (ESPP)

We have an Employee Stock Purchase Plan (“ESPP”) under which employees that have been continuously employed for at least one year may purchase shares of our common stock at a discount. The plan provides for four offering periods for purchases: December 1 through February 28, March 1 through May 31, June 1 through August 31 and September 1 through November 30. At the end of each offering period, enrolled employees purchase shares of our common stock at a price equal to 95% of the market value of the stock on the last day of such offering period. The purchases are made at the end of an offering period with funds accumulated through payroll deductions over the course of the offering period. Subject to limitations set forth in the plan and under IRS regulations, eligible employees may elect to contribute a maximum of $15,000 to the plan in a single calendar year. The plan is deemed to be noncompensatory.

The following table summarizes ESPP activity (in thousands, except shares):

	For the six months ended June 30, 2018
Cash received for shares issued	$	54
Shares issued		3,986

Phantom unit awards

The Company’s phantom unit awards were cash settled awards that were contingent upon meeting certain equity returns and a liquidation event. The settlement amount was based on the fair market value of a share of the Company’s Class A common stock on the date of completion of the Company’s IPO, which constituted a liquidation event with respect to such phantom unit awards. As a result of the cash‑settlement feature of these awards, the Company considered these awards to be liability awards, which were measured at fair value at each reporting date and the pro rata vested portion of the award was recognized as a liability to the extent that the performance condition was deemed probable. On May 5, 2017, the Company settled its outstanding phantom unit awards for an aggregate amount equal to $7.8 million as a result of the completion of its IPO, which constituted a liquidity event with respect to such phantom unit awards. Based on the fair market value of a share of the Company’s Class A common stock on the date of the IPO of $14.00, the cash payment with respect to each phantom unit was approximately $5.53, before employer taxes.  The Company recognized compensation expense of $7.8 million during both the Prior Quarter and the Prior Period related to the settlement of its phantom unit awards. As of June 30, 2018 and 2017 there were no phantom units outstanding.

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NOTE 11—FAIR VALUE MEASUREMENT

The Company utilizes fair value measurements to measure assets and liabilities in a business combination or assess impairment of property and equipment, intangible assets and goodwill. Fair value is defined as the amount at which an asset (or liability) could be bought (or incurred) or sold (or settled) in an orderly transaction between market participants at the measurement date. Further, ASC 820, Fair Value Measurements, establishes a framework for measuring fair value, establishes a fair value hierarchy based on the quality of inputs used to measure fair value, and includes certain disclosure requirements. Fair value estimates are based on either (i) actual market data or (ii) assumptions that other market participants would use in pricing an asset or liability, including estimates of risk.

ASC 820 establishes a three‑level valuation hierarchy for disclosure of fair value measurements. The valuation hierarchy categorizes assets and liabilities measured at fair value into one of three different levels depending on the observability of the inputs employed in the measurement. The three levels are defined as follows:

Level 1—Unadjusted quoted prices for identical assets or liabilities in active markets.

Level 2—Quoted prices for similar assets or liabilities in non‑active markets, and inputs that are observable for the asset or liability, either directly or indirectly, for substantially the full term of the financial instrument.

Level 3—Inputs that are unobservable and significant to the fair value measurement (including the Company’s own assumptions in determining fair value).

A financial instrument’s categorization within the valuation hierarchy is based upon the lowest level of input that is significant to the fair value measurement. The Company’s assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment and considers factors specific to the asset or liability. There were no transfers into, or out of, the three levels of the fair value hierarchy for the six months ended June 30, 2018 or the year ended December 31, 2017.

Other fair value considerations

The carrying values of the Company’s current financial instruments, which include cash and cash equivalents, accounts receivable trade and accounts payable, approximate their fair value at June 30, 2018 and December 31, 2017 due to the short‑term maturity of these instruments. The carrying value of debt as of June 30, 2018 and December 31, 2017 approximates fair value due to variable market rates of interest. The fair value of debt at June 30, 2018 and December 31, 2017, which is a Level 3 measurement, is estimated based on the Company’s incremental borrowing rates for similar types of borrowing arrangements, when quoted market prices are not available. The estimated fair values of the Company’s financial instruments are not necessarily indicative of the amounts that would be realized in a current market exchange. The consideration transferred and the purchase price allocation of identified assets acquired and liabilities assumed related to the Rockwater Merger, Resource Water Acquisition and GRR Acquisition are based on the Company’s estimate of fair value utilizing Level 3 inputs at the date of acquisition. Refer to Note 3 – Acquisitions for further discussion.

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NOTE 12—RELATED PARTY TRANSACTIONS

The Company considers its related parties to be those stockholders who are beneficial owners of more than 5.0% of its common stock, executive officers, members of its board of directors or immediate family members of any of the foregoing persons. The Company has entered into a significant number of transactions with related parties. In accordance with the Company’s related persons transactions policy, the Company’s board of directors regularly reviews these transactions; however, the Company’s results of operations may have been different if these transactions were conducted with non‑related parties.

During the Current Quarter, sales to related parties were $1.2 million and purchases from related party vendors were $4.2 million. These purchases consisted of $1.0 million relating to purchases of property and equipment, $2.6 million relating to the rental of certain equipment or other services used in operations and $0.6 million relating to management, consulting and other services.

During the Prior Quarter, sales to related parties were $0.6 million and purchases from related party vendors were $1.7 million. These purchases consisted of $0.5 million relating to purchases of property and equipment, $0.1 million relating to inventory and consumables, $0.4 million relating to the rental of certain equipment or other services used in operations, and $0.7 million relating to management, consulting and other services.

During the Current Period, sales to related parties were $3.6 million and purchases from related party vendors were $7.5 million. These purchases consisted of $2.6 million relating to purchases of property and equipment, $0.2 million relating to inventory and consumables, $3.8 million relating to the rental of certain equipment or other services used in operations and $0.9 million relating to management, consulting and other services.

During the Prior Period, sales to related parties were $1.1 million and purchases from related party vendors were $2.9 million. These purchases consisted of $0.7 million relating to purchases of property and equipment, $0.2 million relating to inventory and consumables, $0.8 million relating to the rental of certain equipment or other services used in operations, and $1.2 million relating to management, consulting and other services.

Tax receivable agreements

In connection with the Select 144A Offering, the Company entered into the Tax Receivable Agreements with the TRA Holders.

The first of the Tax Receivable Agreements, which the Company entered into with Legacy Owner Holdco and Crestview Partners II GP, L.P. (“Crestview GP”), generally provides for the payment by the Company to such TRA Holders of 85% of the net cash savings, if any, in U.S. federal, state and local income and franchise tax that the Company actually realizes (computed using simplifying assumptions to address the impact of state and local taxes) or is deemed to realize in certain circumstances in periods after the Select 144A Offering as a result of, as applicable to each such TRA Holder, (i) certain increases in tax basis that occur as a result of the Company’s acquisition (or deemed acquisition for U.S. federal income tax purposes) of all or a portion of such TRA Holder’s SES Holdings LLC Units in connection with the Select 144A Offering or pursuant to the exercise of the Exchange Right or the Company’s Call Right and (ii) imputed interest deemed to be paid by the Company as a result of, and additional tax basis arising from, any payments the Company makes under such Tax Receivable Agreement.

The second of the Tax Receivable Agreements, which the Company entered into with an affiliate of the Contributing Legacy Owners and Crestview GP, generally provides for the payment by the Company to such TRA Holders of 85% of the net cash savings, if any, in U.S. federal, state and local income and franchise tax that the Company actually realizes (computed using simplifying assumptions to address the impact of state and local taxes) or is deemed to realize in certain circumstances in periods after the Select 144A Offering as a result of, as applicable to each such TRA Holder, (i) any net operating losses available to the Company as a result of certain reorganization transactions entered into in connection with the Select 144A Offering and (ii) imputed interest deemed to be paid by the Company as a result of any payments the Company makes under such Tax Receivable Agreement.

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On July 18, 2017, the Company’s boardof directors approved amendments to each of the Tax Receivable Agreements revising the definition of a “change of control” for purposes of the Tax Receivable Agreements and acknowledging that the Rockwater Merger would not result in such a change of control.

NOTE 13—INCOME TAXES

The Company’s effective tax rates for the Current Quarter, Prior Quarter, Current Period and Prior Period were 0.6%, (1.3)%,  1.5% and (0.1)%, respectively. The effective tax rates for the Current and Prior Quarter and the Current and Prior Period differ from the statutory rate of 21% and 35%, respectively, due to net income allocated to noncontrolling interests, state income taxes, and valuation allowances. The change in the effective tax rate is primarily due to positive pretax income in the Current Period relative to a loss in the Prior Period. The Company recorded income tax expense (benefit) of $0.2 million, $(0.1) million, $0.6 million and a nominal amount for the Current Quarter, Prior Quarter, Current Period and Prior Period, respectively.

The Tax Cuts and Jobs Act (“the TCJA”), was enacted on December 22, 2017, and the Company recorded provisional estimates for the impacts of the TCJA in the December 31, 2017 period. Such amounts remain provisional and the Company has not made any material adjustments as of June 30, 2018. Staff Accounting Bulletin No. 118 provides the Company with one year from the date of enactment to finalize its accounting related to the TCJA. Certain provisions of the TCJA became effective beginning on January 1, 2018 and the Company has incorporated reasonable estimates of these provisions into its calculation of its effective annual tax rate and its tax expense for the period ending June 30, 2018. The Company’s reasonable estimates may be affected in the future as additional regulatory guidance is provided and the Company gains a more thorough understanding of the TCJA. The Company intends to make any necessary final adjustments to the estimates upon the filing of its remaining tax returns during the quarter ending September 30, 2018. The Company does not anticipate the adjustments, if any, will be material.

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NOTE 14—NONCONTROLLING INTERESTS

The Company has ownership interests in multiple subsidiaries that are consolidated within the Company’s financial statements but are not wholly owned. During the Current Period and Prior Period, the Company entered into transactions that impacted its ownership interest in certain of these subsidiaries while maintaining control over such subsidiaries. As a result of the Company’s change in ownership interest in these subsidiaries, the Company reduced its noncontrolling interests and recognized an increase in equity related to transactions with holders of noncontrolling interests. The Company reports a noncontrolling interest representing the common units of SES Holdings held by Legacy Owner Holdco. Changes in Select Inc.’s ownership interest in SES Holdings while it retains its controlling interest are accounted for as equity transactions.

The following table summarizes the effects of changes in noncontrolling interests on equity for the Current Period and the Prior Period:

	For the six months ended June 30,
	2018		2017
	(in thousands)
Net income (loss) attributable to Select Energy Services, Inc.	$	27,062	$	(8,388)
Transfers from noncontrolling interests:
Decrease in additional paid-in capital as a result of the contribution of proceeds from the IPO to SES Holdings, LLC in exchange for common units		—		(41,128)
Decrease in additional paid-in capital as a result of the contribution of net assets acquired to SES Holdings, LLC in exchange for common units		—		(4,195)
Decrease in additional paid-in capital as a result of stock option exercises		(1)		—
Increase in additional paid-in capital as a result of restricted stock issuance, net of forfeitures		2,195		—
Increase in additional paid-in capital as a result of issuance of common stock due to vesting of restricted stock units		104		—
Increase in additional paid-in capital as a result of the repurchase of common units of SES Holdings, LLC		74		—
Increase in additional paid-in capital as a result of the conversion of Class B to Class A shares		111,803		—
Decrease in additional paid-in capital as a result of the Employee Stock Purchase Plan shares issued		(4)		—
Change to equity from net income (loss) attributable to Select Energy Services, Inc. and transfers from noncontrolling interests	$	141,233	$	(53,711)

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NOTE 15—EARNINGS (LOSS) PER SHARE

Earnings per share are based on the amount of income allocated to the shareholders and the weighted‑average number of shares outstanding during the period for each class of common stock. Outstanding options to purchase 1,834,105 and 1,848,482 shares are not included in the calculation of diluted weighted-average shares outstanding for the Current Quarter and Current Period, respectively, as the effect is antidilutive.

The following tables presents the Company’s calculation of basic and diluted earnings per share for the Current and Prior Quarter and the Current and Prior Period (dollars in thousands, except share and per share amounts):

	Three months ended June 30, 2018								Three months ended June 30, 2017
	Select Energy Services, Inc.		Class A		Class A-2		Class B		Select Energy Services, Inc.		Class A		Class A-1		Class B
Numerator:
Net income (loss)	$	25,023							$	(10,490)
Net (income) loss attributable to noncontrolling interests		(8,060)								6,274
Net income (loss) attributable to Select Energy Services, Inc. — basic		16,963	$	16,963	$	—	$	—		(4,216)	$	(2,184)	$	(2,032)	$	—
Add: Reallocation of net income attributable to noncontrolling interests for the dilutive effect of restricted stock		6		6		—		—		—		—		—		—
Add: Reallocation of net income attributable to noncontrolling interests for the dilutive effect of stock options		22		22		—		—		—		—		—		—
Add: Reallocation of net income attributable to noncontrolling interests for the dilutive effect of ESPP		—		—		—		—		—		—		—		—
Net income (loss) attributable to Select Energy Services, Inc. — diluted	$	16,991	$	16,991	$	—	$	—	$	(4,216)	$	(2,184)	$	(2,032)	$	—
Denominator:
Weighted-average shares of common stock outstanding — basic				71,412,158		—		34,677,182				14,075,052		13,092,308		38,462,541
Dilutive effect of restricted stock				71,969		—		—				—		—		—
Dilutive effect of stock options				261,582		—		—				—		—		—
Dilutive effect of ESPP				99		—		—				—		—		—
Weighted-average shares of common stock outstanding — diluted				71,745,808		—		34,677,182				14,075,052		13,092,308		38,462,541
Earnings (loss) per share:
Basic			$	0.24	$	—	$	—			$	(0.16)	$	(0.16)	$	—
Diluted			$	0.24	$	—	$	—			$	(0.16)	$	(0.16)	$	—

	Six months ended June 30, 2018								Six months ended June 30, 2017
	Select Energy Services, Inc.		Class A		Class A-2		Class B		Select Energy Services, Inc.		Class A		Class A-1		Class B
Numerator:
Net income (loss)	$	41,155							$	(22,770)
Net (income) loss attributable to noncontrolling interests		(14,093)								14,382
Net income (loss) attributable to Select Energy Services, Inc. — basic		27,062	$	25,784	$	1,278	$	—		(8,388)	$	(3,200)	$	(5,188)	$	—
Add: Reallocation of net income attributable to noncontrolling interests for the dilutive effect of restricted stock		17		18		(1)		—		—		—		—		—
Add: Reallocation of net income attributable to noncontrolling interests for the dilutive effect of stock options		49		53		(4)		—		—		—		—		—
Add: Reallocation of net income attributable to noncontrolling interests for the dilutive effect of ESPP		—		—		—		—		—		—		—		—
Net income (loss) attributable to Select Energy Services, Inc. — diluted	$	27,128	$	25,855	$	1,273	$	—	$	(8,388)	$	(3,200)	$	(5,188)	$	—
Denominator:
Weighted-average shares of common stock outstanding — basic				65,270,048		3,235,746		37,488,964				8,999,294		14,587,845		38,462,541
Dilutive effect of restricted stock				118,719		—		—				—		—		—
Dilutive effect of stock options				343,127		—		—				—		—		—
Dilutive effect of ESPP				83		—		—				—		—		—
Weighted-average shares of common stock outstanding — diluted				65,731,977		3,235,746		37,488,964				8,999,294		14,587,845		38,462,541
Earnings (loss) per share:
Basic			$	0.40	$	0.40	$	—			$	(0.36)	$	(0.36)	$	—
Diluted			$	0.39	$	0.39	$	—			$	(0.36)	$	(0.36)	$	—

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NOTE 16—SEGMENT INFORMATION

Select Inc. is an oilfield services company that provides solutions to the North American onshore oil and natural gas industry. The Company’s services are offered through three operating segments. Operating segments are defined as components of an enterprise for which separate financial information is evaluated regularly by the chief operating decision maker (“CODM”) in deciding how to allocate resources and assess performance. The Company’s chief operating decision maker assesses performance and allocates resources on the basis of the three reportable segments. Corporate and other expenses that do not individually meet the criteria for segment reporting are reported separately as Corporate. Each operating segment reflects a reportable segment led by separate managers that report directly to the Company’s CODM.

As a result of the Rockwater Merger, during the fourth quarter 2017, the Company reorganized its reporting structure and aligned its segments and underlying businesses to execute on the strategies of the combined company.  The Company’s revised operating and reportable segments are Water Solutions, Oilfield Chemicals and Wellsite Services. Accordingly, prior period segment information has been retrospectively revised as of and for the quarter ended June 30, 2017.

The Company’s CODM assesses performance and allocates resources on the basis of the following three reportable segments:

Water Solutions —The Water Solutions segment provides water‑related services to customers that include major integrated oil companies and independent oil and natural gas producers. These services include: the sourcing of water; the transfer of the water to the wellsite through permanent pipeline infrastructure and temporary pipe; the containment of fluids off‑ and on‑location; measuring and monitoring of water; the filtering and treatment of fluids, well testing and handling of flowback and produced formation water; and the transportation and recycling or disposal of drilling, completion and production fluids.

Oilfield Chemicals —The Oilfield Chemicals segment develops, manufactures and provides a full suite of chemicals utilized in hydraulic fracturing, stimulation, cementing and well completions, including polymer slurries, crosslinkers, friction reducers, buffers, breakers and other chemical technologies, to leading pressure pumping service companies in the United States.

Wellsite Services —The Wellsite Completion and Construction Services segment provides oil and natural gas operators with a variety of services, including provision of workforce accommodations and surface rental equipment, crane and logistics services, wellsite and pipeline construction, field and well services, sand hauling and fluid logistics services. In addition, we provide water transfer, fluid hauling, containment and rental services in Canada. These services are performed to establish, maintain or improve production throughout the productive life of an oil or gas well or to otherwise facilitate other services performed on a well.

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Financial information by segment for the Current and Prior Quarter and the Current and Prior Period is as follows:

	For the three months ended June 30, 2018
			Income (loss)		Depreciation and		Capital
	Revenue		before taxes		Amortization		Expenditures
	(in thousands)
Water solutions	$	273,788	$	32,997	$	21,599	$	37,875
Oilfield chemicals		64,842		1,031		2,823		3,424
Wellsite services		55,400		1,983		6,023		4,520
Eliminations		(783)		—		—		—
Income from operations				36,011
Corporate		—		(11,216)		807		—
Interest expense, net		—		(1,342)		—		—
Other income, net		—		1,720		—		—
	$	393,247	$	25,173	$	31,252	$	45,819

	For the three months ended June 30, 2017
			Income (loss)		Depreciation and		Capital
	Revenue		before taxes		Amortization		Expenditures
	(in thousands)
Water solutions	$	107,738	$	3,479	$	18,642	$	23,058
Oilfield chemicals		—		—		—		—
Wellsite services		26,922		(799)		3,878		8,010
Eliminations		(211)		(1)		—		—
Income from operations				2,679
Corporate		—		(14,588)		491		—
Interest expense, net		—		(671)		—		—
Other income, net		—		1,952		—		—
	$	134,449	$	(10,628)	$	23,011	$	31,068

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	For the six months ended June 30, 2018
			Income (loss)		Depreciation and		Capital
	Revenue		before taxes		Amortization		Expenditures
	(in thousands)
Water solutions	$	531,320	$	61,200	$	42,842	$	61,769
Oilfield chemicals		128,472		1,962		5,738		5,679
Wellsite services		111,122		1,278		12,747		9,477
Eliminations		(1,272)		—		—		—
Income from operations				64,440
Corporate		—		(21,042)		1,348		—
Interest expense, net		—		(2,493)		—		—
Other income, net		—		862		—		—
	$	769,642	$	41,767	$	62,675	$	76,925

	For the six months ended June 30, 2017
			Income (loss)		Depreciation and		Capital
	Revenue		before taxes		Amortization		Expenditures
	(in thousands)
Water solutions	$	186,503	$	(4,192)	$	36,190	$	35,013
Oilfield chemicals		—		—		—		—
Wellsite services		48,732		(3,451)		7,534		10,065
Eliminations		(861)		—		—		—
Loss from operations				(7,643)
Corporate		—		(16,774)		937		—
Interest expense, net		—		(1,401)		—		—
Other income, net		—		3,016		—		—
	$	234,374	$	(22,802)	$	44,661	$	45,078

Total assets by segment as of June 30, 2018 and December 31, 2017 is as follows:

	As of		As of
	June 30, 2018		December 31, 2017
	(in thousands)
Water solutions	$	1,079,348	$	994,159
Oilfield chemicals		180,999		186,333
Wellsite services		143,582		151,272
Corporate		29,813		24,604
	$	1,433,742	$	1,356,368

NOTE 17—SUBSEQUENT EVENTS

The Company has evaluated subsequent events for potential recognition and/or disclosure through August 10, 2018, the date these consolidated financial statements were available to be issued.

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Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

The following discussion and analysis should be read in conjunction with the consolidated financial statements and related notes included elsewhere in this report, as well as the historical consolidated financial statements and notes thereto included in our 2017 Form 10-K. This discussion and analysis contains forward-looking statements based upon our current expectations that involve risks and uncertainties. Our actual results may differ materially from those anticipated in these forward-looking statements as a result of various factors as described under “Cautionary Note Regarding Forward-Looking Statements.”

Overview

We are a leading provider of total water management and chemical solutions to the oil and gas industry in the United States and Western Canada. The oilfield water services market has grown rapidly over the past decade, driven by advances in drilling, completion and production technologies. Within the major unconventional onshore oil and gas plays in the United States, we believe we are a market leader in sourcing, transfer (both by permanent pipeline and temporary hose) and temporary containment of water prior to its use in drilling and completion activities associated with hydraulic fracturing or “fracking,” which we collectively refer to as “pre‑frac water services.” We also provide well testing and flowback services immediately following the well completion. In most of our areas of operations, we provide additional complementary water‑related services that support oil and gas well completion and production activities including monitoring, treatment, hauling, recycling and disposal. In addition to our water-related services, we also develop and manufacture specialty chemicals used in frac fluid systems and production chemicals used to enhance performance over the life of a well. We believe we are the only oilfield services company that provides total water solutions together with complementary chemical products and related expertise, which we believe gives us a unique competitive advantage in our industry.

We also offer wellsite services that complement our total water management and chemical solutions offering. These services include equipment rental, accommodations, crane and logistics services, wellsite and pipeline construction, field and well services, sand hauling and fluid logistics services. In addition, we provide water transfer, fluid hauling, containment and rental services in Canada.

Going forward, we may pursue selected, accretive acquisitions of complementary assets, businesses and technologies, including water transfer infrastructure, and believe we are well positioned to capture attractive opportunities due to our market position, customer relationships and industry experience and expertise.

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Our Segments

Our services are offered through three operating segments: (i) Water Solutions, (ii) Oilfield Chemicals and (iii) Wellsite Services.

· Water Solutions.  Our Water Solutions segment is operated primarily under our subsidiary, Select Energy Services, LLC (“Select LLC”), and provides water‑related services to customers that include major integrated oil companies and independent oil and natural gas producers. These services include: the sourcing of water; the transfer of the water to the wellsite through permanent pipeline infrastructure and temporary hose; the containment of fluids off‑ and on‑location; measuring and monitoring of water; the filtering and treatment of fluids, well testing and handling of flowback and produced formation water; and the transportation and recycling or disposal of drilling, completion and production fluids. 

· Oilfield Chemicals.  Our Oilfield Chemicals segment is operated primarily under our subsidiary, Rockwater Energy Solutions, LLC (“Rockwater LLC”). Under this segment, we develop, manufacture and provide a full suite of completion and specialty chemical products utilized in hydraulic fracturing, stimulation, cementing and related well completion processes. These products include polymers that create viscosity, crosslinkers, friction reducers, surfactants, buffers, breakers and other chemical technologies. Our customers for completion and specialty chemicals are primarily leading pressure pumping service companies in the United States. We also provide production chemicals, which are used by oil and gas companies to enhance well performance and reduce production costs throughout the life of a well. 

· Wellsite Services.  Our Wellsite Services segment provides a number of services across the U.S. and Canada and is operated primarily under our subsidiaries Peak Oilfield Services, LLC (“Peak”), Affirm Oilfield Services, LLC (“Affirm”) and Rockwater LLC. Peak provides workforce accommodations and surface rental equipment supporting drilling, completion and production operations to the U.S. onshore oil and gas industry. Affirm provides oil and gas operators with a variety of services, including crane and logistics services, wellsite and pipeline construction and field services. Operating under Rockwater LLC, we also offer sand hauling and fluid logistics services in the Rockies and Bakken regions as well as water transfer, containment, fluid hauling and rental services in Canada.

How We Generate Revenue

We currently generate a significant majority of our revenue through our Water Solutions segment, specifically through our water management services associated with hydraulic fracturing. We generate the majority of our revenue through customer agreements with fixed pricing terms but no guaranteed throughput amounts. While we have some long‑term pricing arrangements, most of our water and water‑related services are priced based on prevailing market conditions, giving due consideration to the specific requirements of the customer.

We also generate revenue through our Oilfield Chemicals segment, which provides completion, specialty chemicals and production chemicals, and our Wellsite Services segment, which provides workforce accommodations and related rentals; a variety of wellsite completion and construction services, including wellsite and pipeline construction, field and well services, sand hauling and fluid logistics services. In addition, we provide water transfer, fluid hauling, containment and rental services in Canada. We invoice the majority of our Oilfield Chemicals customers for services provided under such segment based on the quantity of chemicals used or pursuant to short‑term contracts as the customer’s needs arise. We invoice the majority of our customers for services under our Wellsite Services segments on a per job basis or pursuant to short‑term contracts as the customer’s needs arise.

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Costs of Conducting Our Business

The principal expenses involved in conducting our business are labor costs, equipment costs (including depreciation, repair and maintenance and leasing costs), raw materials and water sourcing costs and fuel costs. Our fixed costs are relatively low and a large portion of the costs we incur in our business are only incurred when we provide water, water‑related services, chemicals and chemical‑related services to our customers.

Labor costs associated with our employees represent the most significant costs of our business. We incurred labor costs of $117.5 million,  $60.4 million, $233.9 million and $100.8 million for the Current Quarter, Prior Quarter, Current Period and Prior Period, respectively. The majority of our recurring labor costs are variable and are incurred only while we are providing our operational services. We also incur costs to employ personnel to sell and supervise our services and perform maintenance on our assets which are not directly tied to our level of business activity. Additionally, we incur selling, general and administrative costs for compensation of our administrative personnel at our field sites and in our operational and corporate headquarters.

We incur significant equipment costs in connection with the operation of our business, including depreciation, repair and maintenance and leasing costs. We incurred equipment costs of $71.2 million,  $33.1 million, $140.2 million and $62.4 million for the Current Quarter, Prior Quarter, Current Period and Prior Period, respectively. Our depreciation costs are expected to increase over the next year as a result of the Rockwater Merger.

We incur significant transportation costs, associated with our service lines, including fuel and freight. We incurred fuel costs of $21.7 million,  $7.2 million, $42.2 million and $13.3 million for the Current Quarter, Prior Quarter, Current Period and Prior Period, respectively. Fuel prices impact our transportation costs, which affect the pricing and demand of our services and have an impact on our results of operations.

We incur raw material costs in manufacturing our chemical products, as well as water sourcing costs in connection with obtaining strategic and reliable water sources to provide repeatable water volumes to our customers. We incurred raw material costs of $69.3 million,  $12.5 million, $137.8 million and $20.8 million for the Current Quarter, Prior Quarter, Current Period and Prior Period, respectively. Raw materials costs of  $47.5 million and $95.6 million were attributable to our chemical products for the Current Quarter and the Current Period, respectively. We incurred water sourcing costs of $14.2 million,  $8.8 million, $26.7 million and $14.2 million for the Current Quarter, Prior Quarter, Current Period and Prior Period, respectively.

Industry Overview

We benefited from increasing crude oil pricing during the Current Quarter, which provides our customers with additional incentive to drill and complete wells. WTI (Cushing) spot prices rose from $63.05 on April 2, 2018 to close at $74.13 on June 29, 2018. The average WTI price for the Current Quarter of $68.07 compared favorably to average price of the $48.10 for the Prior Quarter. While we cannot be confident on the future direction of oil prices, our discussions with customers and market knowledge indicate that this price range is supportive for continued development of U.S. unconventional oil resources. While natural gas prices are not presently at a level that would encourage activity growth, the bulk of our business is tied to completions of oil wells.

Trends beyond oil prices present both support and challenges. While leading edge lateral lengths and proppant use have plateaued, the average operator continues to catch up to this leading edge. The increased use of lower cost, in-basin sand in the Permian Basin supports this development, which should lead to increased pre-frac water demand per well. While pipeline capacity constraints may temporarily restrain completion activity in the Permian, we believe we are better positioned than many of our smaller competitors to reallocate equipment and personnel across basins to where they are most needed. A moderation of activity in this region may also curb cost inflation, which has posed a challenge as both the rig count and the number of working frac crews have increased substantially in the Permian over the last 18 months.

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For our Oilfield Chemicals segment, the recent opening of our Midland Friction Reducer production line should save us substantial freight and logistics cost relative to shipping this high-volume product out of our Tyler, TX production facility. The trend of increased use of produced water may require additional chemical treatment solutions, which we are well positioned to provide given our water treatment capabilities.

Our operations have benefited from the investments and acquisitions we have made since our IPO, and we continue to invest in the business. When evaluating new investment decisions, we prioritize high returns on long-lived assets. One way we do this is through margin-enhancing capital expenditures, which often comprises upgrading equipment to realize a higher margin on it, such as replacing conventional water pumps with automated ones. Another area of evaluation is the potential to invest in longer-lived infrastructure assets in areas we believe will see major completion activity. We believe our customer relationships, technical expertise, and formidable balance sheet provide us with advantages in this area.

How We Evaluate Our Operations

We use a variety of operational and financial metrics to assess our performance. Among other measures, management considers each of the following:

· Revenue;

· Gross Profit (Loss);

· EBITDA; and

· Adjusted EBITDA.

Revenue

We analyze our revenue and assess our performance by comparing actual monthly revenue to our internal projections. We also assess incremental changes in revenue compared to incremental changes in direct operating costs, and selling, general and administrative expenses across our operating segments to identify potential areas for improvement, as well as to determine whether segments are meeting management’s expectations.

Gross Profit (Loss)

To measure our financial performance, we analyze our gross profit (loss), which we define as revenues less direct operating expenses (including depreciation and amortization expenses). We believe gross profit is a meaningful metric because it provides insight on profitability and true operating performance based on the historical cost basis of our assets. We also compare gross profit (loss) to prior periods and across segments to identify trends as well as underperforming segments.

EBITDA and Adjusted EBITDA

We view EBITDA and Adjusted EBITDA as important indicators of performance. We define EBITDA as net income/(loss), plus interest expense, taxes, and depreciation and amortization. We define Adjusted EBITDA as EBITDA plus/(minus) loss/(income) from discontinued operations, plus any impairment charges or asset write-offs pursuant to GAAP, plus/(minus) non-cash losses/(gains) on the sale of assets or subsidiaries, non-recurring compensation expense, non-cash compensation expense, and non-recurring or unusual expenses or charges, including severance expenses, transaction costs, or facilities-related exit and disposal-related expenditures, plus/(minus) foreign currency losses/(gains) and plus any inventory write-downs. See “—Comparison of Non‑GAAP Financial Measures” for more information and a reconciliation of EBITDA and Adjusted EBITDA to net income (loss), the most directly comparable financial measure calculated and presented in accordance with GAAP. 

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Factors Affecting the Comparability of Our Results of Operations to Our Historical Results of Operations

Our future results of operations may not be comparable to our historical results of operations for the periods presented, primarily for the reasons described below.

Acquisition Activity

As described above, we are continuously evaluating potential investments, particularly in water transfer, infrastructure and other water‑related services and technology. To the extent we consummate acquisitions, any incremental revenues or expenses from such transactions would not be included in our historical results of operations.

Rockwater Merger

On November 1, 2017, we completed the Rockwater Merger whereby we acquired the business, assets and operations of Rockwater and Rockwater LLC. Our historical financial statements for periods prior to November 1, 2017 do not include the results of operations of Rockwater or Rockwater LLC.

Resource Water Acquisition

On September 15, 2017, we completed our acquisition of Resource Water. Our historical financial statements for periods prior to September 15, 2017 do not include the results of operations of Resource Water.

GRR Acquisition

On March 10, 2017, we completed our acquisition of GRR Entities. Our historical financial statements for periods prior to March 10, 2017 do not include the results of operations of the GRR Entities.

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Results of Operations

The following tables set forth our results of operations for the periods presented, including revenue by segment.

Current Quarter Compared to the Prior Quarter

	Three months ended June 30,				Change
	2018		2017		Dollars		Percentage
		(in thousands)
Revenue
Water solutions	$	273,733	$	107,812	$	165,921	153.9	%
Oilfield chemicals		64,807		—		64,807	NM
Wellsite services		54,707		26,637		28,070	105.4	%
Total revenue		393,247		134,449		258,798	192.5	%
Costs of revenue
Water solutions		203,681		78,028		125,653	161.0	%
Oilfield chemicals		58,500		—		58,500	NM
Wellsite services		43,893		21,647		22,246	102.8	%
Depreciation and amortization		30,445		22,520		7,925	35.2	%
Total costs of revenue		336,519		122,195		214,324	175.4	%
Gross profit		56,728		12,254		44,474	362.9	%
Operating expenses
Selling, general and administrative		26,871		23,254		3,617	15.6	%
Depreciation and amortization		807		491		316	64.4	%
Impairment of property and equipment		2,282		—		2,282	NM
Lease abandonment costs		1,973		418		1,555	372.0	%
Total operating expenses		31,933		24,163		7,770	32.2	%
Income (loss) from operations		24,795		(11,909)		36,704	308.2	%
Other income (expense)
Interest expense, net		(1,342)		(671)		(671)	100.0	%
Foreign currency losses, net		(340)		—		(340)	NM
Other income, net		2,060		1,952		108	5.5	%
Income (loss) before tax expense		25,173		(10,628)		35,801	336.9	%
Tax benefit (expense)		(150)		138		(288)	NM
Net income (loss)	$	25,023	$	(10,490)	$	35,513	338.5	%

Revenue

Our revenue increased $258.8 million, or 192.5%, to $393.2 million for the Current Quarter compared to $134.4 million for the Prior Quarter. The increase was primarily attributable to an increase in our Water Solutions segment revenues of $165.9 million resulting from an increase in demand for our services as a result of a rise in completion activities, as well as the Rockwater Merger, which closed on November 1, 2017. For the Current Quarter, our Water Solutions, Oilfield Chemicals and Wellsite Services segments constituted 69.6%, 16.5% and 13.9% of our total revenue, respectively, compared to 80.2%, 0.0%, and 19.8%, respectively, for the Prior Quarter. The revenue increase by operating segment was as follows:

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Water Solutions.  Revenue increased $165.9 million, or 153.9%, to $273.7 million for the Current Quarter compared to $107.8 million for the Prior Quarter. The increase was primarily attributable to the Rockwater Merger as well as an increase in the demand for our services as a result of a rise in well completion count of 29.7% and an increase in average quarterly U.S. land rig count of 16.8% during the Current Quarter compared to the Prior Quarter.   

Oilfield Chemicals.  Revenue from our oilfield chemicals segment relates entirely to our Rockwater LLC operations.

Wellsite Services.  Revenue increased $28.1 million, or 105.4%, to $54.7 million for the Current Quarter compared to $26.6 million for the Prior Quarter. The increase was primarily attributable to the Rockwater Merger as well as an increase in the demand for our services as a result of a rise in well completion count of 29.7% and an increase in average quarterly U.S. land rig count of 16.8% as compared to the Prior Quarter. The Rockwater Merger contributed $23.7 million of revenue for the Current Quarter.

Costs of Revenue

Costs of revenue increased $214.3 million, or 175.4%, to $336.5 million for the Current Quarter compared to $122.2 million for the Prior Quarter. The increase was largely attributable to the Rockwater Merger as well as higher salaries and wages due to an increase in employee headcount, and outside services, rentals and materials expense as a result of increased demand for our services due to the overall increase in drilling, completion and production activities, particularly in our Water Solutions segment. The cost of revenue increase by operating segment was as follows:

Water Solutions.  Cost of revenue increased $125.7 million, or 161.0%, to $203.7 million for the Current Quarter compared to $78.0 million for the Prior Quarter.  The results for the Current Quarter includes costs associated with Rockwater LLC’s operations. The increase was partly attributable to an increase in salaries and wages of $45.5 million as a result of a 114.0% increase in average headcount during the Current Quarter as compared to the Prior Quarter.  In addition to the increases in salaries and wages, we saw an increase in our contract labor expense of $19.0 million as the rapid growth rate in the demand for our services has resulted in increased short-term labor needs while our internal recruitment and hiring continues. The increase in cost of revenue was also attributable to an increase in equipment rental and maintenance expense of $22.6 million, materials and supplies expense of $15.1 million and bulk and retail fuel expense of $11.0 million. The increase in fuel and maintenance related expenses were largely attributable to a 129.0% increase in the average number of trucks and tractors in our fleet. 

Oilfield Chemicals.  Cost of revenue from our oilfield chemicals relates entirely to our Rockwater LLC operations. These costs primarily related to raw material costs incurred in manufacturing our chemical products.

Wellsite Services.  Cost of revenue increased $22.2 million, or 102.8%, to $43.9 million for the Current Quarter compared to $21.6 million for the Prior Quarter. The results for the Current Quarter include $20.0 million of costs associated with Rockwater LLC’s Canadian operations and Bakken sand and fluid hauling operations. Excluding Rockwater LLC’s operations, the remaining increase was largely attributable to an increase in salaries and wages, certain labor support and materials costs of $2.4 million during the Current Quarter as compared to the Prior Quarter resulting from increased demand for our services, partially offset by a reduction in equipment rental expense of $1.0 million.

Depreciation and Amortization. Depreciation and amortization expense increased $7.9 million, or 35.2%, to $30.4 million for the Current Quarter compared to $22.5 million for the Prior Quarter.  The increase was primarily attributable to additional depreciation from assets acquired in the Rockwater Merger, which closed on November 1, 2017.

Gross Profit

Gross profit improved by $44.5 million, or 362.9%, to a gross profit of $56.7 million for the Current Quarter compared to a gross profit of $12.3 million for the Prior Quarter as a result of factors described above.

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Selling, General and Administrative Expenses

Selling, general and administrative expenses increased  $3.6 million, or 15.6%, to $26.9 million for the Current Quarter compared to $23.3 million for the Prior Quarter.  The Prior Quarter included one-time charges of $12.5 million related to payouts on our phantom equity units and IPO success bonuses. Excluding these one-time charges incurred during the Prior Quarter, selling, general and administrative expenses increased $16.1 million, or 149.1% for the Current Quarter compared to the Prior Quarter. This overall increase was primarily related to the Rockwater Merger.

Impairment

During the Current Quarter, the Company reviewed certain fluid disposal machinery and equipment used in our fluid hauling and disposal services that are included in our Water Solutions segment. Due to the condition of the equipment, the Company determined that long-lived assets with a carrying value of $2.3 million were no longer recoverable and were written down to their estimated fair value of zero.

Lease Abandonment Costs

Due to depressed industry conditions and a resulting reduction in the need for facilities, we decided to close certain facilities beginning in the third quarter of 2016. In conjunction with the Rockwater Merger, we decided to close certain additional facilities that were deemed duplicative of our existing operational locations. As a result of continuing costs related to certain facilities that are no longer in use, we recorded $2.0 million of lease abandonment costs during the Current Quarter. We recorded $0.4 million of lease abandonment costs during the Prior Quarter.

Net Interest Expense

The increase in net interest expense of $0.7 million, or 100.0% during the Current Quarter compared to the Prior Quarter was due to an increase in our debt borrowings largely in connection with the Rockwater Merger.

Net Income (Loss)

Net income (loss) improved by $35.5 million, or 338.5% to a net income of  $25.0 million for the Current Quarter compared to a net loss of  $10.5 million for the Prior Quarter largely as a result of the factors described above.

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Current Period Compared to the Prior Period

	Six months ended June 30,				Change
	2018		2017		Dollars		Percentage
		(in thousands)
Revenue
Water solutions	$	531,276	$	186,189	$	345,087	185.3	%
Oilfield chemicals		128,437		—		128,437	NM
Wellsite services		109,929		48,185		61,744	128.1	%
Total revenue		769,642		234,374		535,268	228.4	%
Costs of revenue
Water solutions		397,743		138,649		259,094	186.9	%
Oilfield chemicals		115,584		—		115,584	NM
Wellsite services		90,311		39,989		50,322	125.8	%
Depreciation and amortization		61,327		43,724		17,603	40.3	%
Total costs of revenue		664,965		222,362		442,603	199.0	%
Gross profit		104,677		12,012		92,665	771.4	%
Operating expenses
Selling, general and administrative		52,552		33,211		19,341	58.2	%
Depreciation and amortization		1,348		937		411	43.9	%
Impairment of property and equipment		2,282		—		2,282	NM
Impairment of investment		2,000		—		2,000	NM
Lease abandonment costs		3,097		2,281		816	35.8	%
Total operating expenses		61,279		36,429		24,850	68.2	%
Income (loss) from operations		43,398		(24,417)		67,815	277.7	%
Other income (expense)
Interest expense, net		(2,493)		(1,401)		(1,092)	77.9	%
Foreign currency losses, net		(740)		—		(740)	NM
Other income, net		1,602		3,016		(1,414)	(46.9)	%
Income (loss) before tax expense		41,767		(22,802)		64,569	283.2	%
Tax benefit (expense)		(612)		32		(644)	NM
Net income (loss)	$	41,155	$	(22,770)	$	63,925	280.7	%

Revenue

Our revenue increased $535.3 million, or 228.4%, to $769.6 million for the Current Period compared to $234.4 million for the Prior Period. The increase was primarily attributable to an increase in our Water Solutions segment revenues of $345.1 million, resulting from an increase in demand for our services as a result of a rise in completion activities, as well as the GRR Acquisition, which closed on March 10, 2017, and the Rockwater Merger, which closed on November 1, 2017. For the Current Period, our Water Solutions, Oilfield Chemicals and Wellsite Services segments constituted 69.0%, 16.7% and 14.3% of our total revenue, respectively, compared to 79.4%, 0.0%, and 20.6%, respectively, for the Prior Period. The revenue increase by operating segment was as follows:

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Water Solutions.  Revenue increased $345.1 million, or 185.3%, to $531.3 million for the Current Period compared to $186.2 million for the Prior Period. The increase was primarily attributable to the Rockwater Merger as well as an increase in the demand for our services as a result of a rise in well completion count of 31.8% and an increase in average quarterly U.S. land rig count of 23.5% during the Current Period compared to the Prior Period.  Additionally, the GRR Acquisition, which closed March 10, 2017, contributed $11.1 million of revenue from the close of the acquisition through June 30, 2017. 

Oilfield Chemicals.  Revenue from our oilfield chemicals segment relates entirely to our Rockwater LLC operations.

Wellsite Services.  Revenue increased $61.7 million, or 128.1%, to $109.9 million for the Current Period compared to $48.2 million for the Prior Period. The increase was primarily attributable to the Rockwater Merger as well as an increase in the demand for our services as a result of a rise in well completion count of 31.8% and an increase in average quarterly U.S. land rig count of 23.5% as compared to the Prior Period. The Rockwater Merger contributed $47.7 million of revenue for the Current Period.

Costs of Revenue

Cost of revenue increased $442.6 million, or 199.0%, to $665.0 million for the Current Period compared to $222.4 million for the Prior Period. The increase was largely attributable to the Rockwater Merger as well as higher salaries and wages due to an increase in employee headcount, and outside services, rentals and materials expense as a result of increased demand for our services due to the overall increase in drilling, completion and production activities, particularly in our Water Solutions segment. The cost of revenue increase by operating segment was as follows:

Water Solutions.  Cost of revenue increased $259.1 million, or 186.9%, to $397.7 million for the Current Period compared to $138.6 million for the Prior Period. The results for the Current Period includes costs associated with Rockwater LLC’s operations. The increase was partly attributable to an increase in salaries and wages of $93.2 million as a result of a 126.5% increase in average headcount during the Current Period as compared to the Prior Period. In addition to the increases in salaries and wages, we saw an increase in our contract labor expense of $46.2 million as the rapid growth rate in the demand for our services has resulted in increased short-term labor needs while our internal recruitment and hiring continues. The increase in cost of revenue was also attributable to an increase in equipment rental and maintenance expense of $42.3 million, materials and supplies expense of $32.9 million and bulk and retail fuel expense of $21.5 million. The increase in fuel and maintenance related expenses were largely attributable to a 138.7% increase in the average number of trucks and tractors in our fleet. 

Oilfield Chemicals.  Cost of revenue from our oilfield chemicals relates entirely to our Rockwater LLC operations. These costs primarily related to raw material costs incurred in manufacturing our chemical products.

Wellsite Services.  Cost of revenue increased $50.3 million, or 125.8%, to $90.3 million for the Current Period compared to $40.0 million for the Prior Period. The results for the Current Period include $41.4 million of costs associated with Rockwater LLC’s Canadian operations and Bakken sand and fluid hauling operations. Excluding Rockwater LLC’s operations, the remaining increase was partially attributable to an increase in salaries and wages and certain labor support and materials costs of $6.8 million resulting from a 12.4% increase in average headcount during the Current Period as compared to the Prior Period resulting from increased demand for our services.

Depreciation and Amortization. Depreciation and amortization expense increased $17.6 million, or 40.3%, to $61.3 million for the Current Period compared to $43.7 million for the Prior Period. The increase was primarily attributable to additional depreciation from assets acquired in the Rockwater Merger, which closed on November 1, 2017.

Gross Profit

Gross profit improved by $92.7 million, or 771.4% to a gross profit of $104.7 million for the Current Period compared to a gross profit of $12.0 million for the Prior Period as a result of factors described above.

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Selling, General and Administrative Expenses

Selling, general and administrative expenses increased  $19.3 million, or 58.2%, to $52.6 million for the Current Period compared to $33.2 million for the Prior Period.  The Prior Period included one-time charges of $12.5 million related to payouts on our phantom equity units and IPO success bonuses. Excluding these one-time charges incurred during the Prior Period, selling, general and administrative expenses increased $31.9 million, or 154.1% for the Current Period compared to the Prior Period. This overall increase was primarily related to the Rockwater Merger, GRR Acquisition and other deal costs, and a $7.8 million increase in other administrative and labor costs, largely related to our new status as a public company during the Current Period as compared to the Prior Period. 

Impairment

During the Current Period, we determined that our cost method investee was no longer fully recoverable, and as such, it was written down to its estimated fair value of $0.5 million. The impairment expense of $2.0 million is included in impairment of investment within the consolidated statements of operations. Additionally, during the Current Period, the company reviewed certain fluid disposal machinery and equipment used in our fluid hauling and disposal services that are included in our Water Solutions segment. Due to the condition of the equipment, the Company determined that long-lived assets with a carrying value of $2.3 million were no longer recoverable and were written down to their estimated fair value of zero. The impairment expense of $2.3 million is included in impairment of property and equipment within the consolidated statements of operations.

Lease Abandonment Costs

Due to depressed industry conditions and a resulting reduction in the need for facilities, we decided to close certain facilities beginning in the third quarter of 2016. In conjunction with the Rockwater Merger, we decided to close certain additional facilities that were deemed duplicative of our existing operational locations. As a result of continuing costs related to certain facilities that are no longer in use, we recorded $3.1 million of lease abandonment costs during the Current Period, approximately $0.6 million of which are directly attributable to the Rockwater Merger. We recorded $2.3 million of lease abandonment costs during the Prior Period.

Net Interest Expense

The increase in net interest expense of $1.1 million, or 77.9% during the Current Period compared to the Prior Period was due to an increase in our debt borrowings in connection with the Rockwater Merger.

Net Income (Loss)

Net income (loss) improved by $63.9 million, or 280.7%, to a net income of $41.2 million for the Current Period compared to a net loss of $22.8 million for the Prior Period largely as a result of the factors described above.

Comparison of Non-GAAP Financial Measures

We view EBITDA and Adjusted EBITDA as important indicators of performance. We define EBITDA as net income (loss), plus interest expense, taxes, and depreciation and amortization. We define Adjusted EBITDA as EBITDA plus/(minus) loss/(income) from discontinued operations, plus any impairment charges or asset write-offs pursuant to GAAP, plus/(minus) non-cash losses/(gains) on the sale of assets or subsidiaries, non-recurring compensation expense, non-cash compensation expense, and non-recurring or unusual expenses or charges, including severance expenses, transaction costs, or facilities-related exit and disposal-related expenditures, plus/(minus) foreign currency losses/(gains) and plus any inventory write-downs. 

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Our board of directors, management and investors use EBITDA and Adjusted EBITDA to assess our financial performance because it allows them to compare our operating performance on a consistent basis across periods by removing the effects of our capital structure (such as varying levels of interest expense), asset base (such as depreciation and amortization) and items outside the control of our management team. We present EBITDA and Adjusted EBITDA because we believe they provide useful information regarding the factors and trends affecting our business in addition to measures calculated under GAAP.

Note Regarding Non-GAAP Financial Measures

EBITDA and Adjusted EBITDA are not financial measures presented in accordance with GAAP. We believe that the presentation of these non-GAAP financial measures will provide useful information to investors in assessing our financial performance and results of operations. Net income is the GAAP measure most directly comparable to EBITDA and Adjusted EBITDA. Our non-GAAP financial measures should not be considered as alternatives to the most directly comparable GAAP financial measure. Each of these non-GAAP financial measures has important limitations as an analytical tool due to exclusion of some but not all items that affect the most directly comparable GAAP financial measures. One should not consider EBITDA or Adjusted EBITDA in isolation or as substitutes for an analysis of our results as reported under GAAP. Because EBITDA and Adjusted EBITDA may be defined differently by other companies in our industry, our definitions of these non-GAAP financial measures may not be comparable to similarly titled measures of other companies, thereby diminishing their utility. For further discussion, please see “Item 6. Selected Financial Data” in our 2017 Form 10-K.

The following tables present a reconciliation of EBITDA and Adjusted EBITDA to our net loss, which is the most directly comparable GAAP measure for the periods presented:

	Three months ended June 30,				Six months ended June 30,
	2018		2017		2018		2017
	(in thousands)
Net income (loss)	$	25,023	$	(10,490)	$	41,155	$	(22,770)
Interest expense		1,342		671		2,493		1,401
Tax expense (benefit)		150		(138)		612		(32)
Depreciation and amortization		31,252		23,011		62,675		44,661
EBITDA		57,767		13,054		106,935		23,260
Impairment of property and equipment		2,282		—		2,282		—
Impairment of investment		—		—		2,000		—
Lease abandonment costs		1,973		418		3,097		2,281
Non-recurring severance expenses		—		122		—		122
Non-recurring transaction costs		2,481		332		5,175		1,080
Non-cash compensation expenses		2,984		589		5,465		1,232
Non-cash loss on sale of assets or subsidiaries		249		198		1,764		507
Non-recurring phantom equity and IPO-related compensation		—		12,537		—		12,537
Foreign currency losses		340		—		740		—
Inventory write downs		128		—		394		—
Adjusted EBITDA	$	68,204	$	27,250	$	127,852	$	41,019

EBITDA was $57.8 million for the Current Quarter compared to $13.1 million for the Prior Quarter. Adjusted EBITDA was $68.2 million for the Current Quarter compared to $27.3 million for the Prior Quarter. The increases in EBITDA and Adjusted EBITDA resulted from an increase in our revenues and gross profit, as discussed above.

EBITDA was $106.9 million for the Current Period compared to $23.3 million for the Prior Period. Adjusted EBITDA was $127.9 million for the Current Period compared to $41.0 million for the Prior Period. The increases in EBITDA and Adjusted EBITDA resulted from an increase in our revenues and gross profit, as discussed above.

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Liquidity and Capital Resources

Overview

Our primary sources of liquidity to date have been capital contributions from our members, the net proceeds from the Select 144A Offering, the net proceeds from the IPO, borrowings under our credit facilities and cash flows from operations. Our primary uses of capital have been capital expenditures to support organic growth and fund acquisitions. Depending upon market conditions and other factors, we may also issue debt and equity securities if needed.

We intend to finance most of our capital expenditures, contractual obligations and working capital needs with cash generated from operations and borrowings from our Credit Agreement. For a discussion of the Credit Agreement, see “—Credit Agreement” below. We believe that our operating cash flow and available borrowings under our Credit Agreement will be sufficient to fund our operations for at least the next twelve months.

 On April 26, 2017, we completed the IPO for net proceeds of approximately $111.4 million, net of underwriting discounts and commissions and estimated offering expenses. We contributed all of these net proceeds to SES Holdings in exchange for SES Holdings LLC Units. SES Holdings used the net proceeds to repay borrowings incurred under our Previous Credit Facility to fund the cash portion of the purchase price of the GRR Acquisition, for the cash settlement of outstanding phantom unit awards at SES Holdings and for capital expenditures.On May 10, 2017, we received cash proceeds of approximately $17.1 million, net of underwriting discounts and commissions and estimated offering expenses, from the exercise in full by the underwriters of our IPO of their option to purchase additional shares of Class A Common Stock. We used the net proceeds from the underwriters’ option exercise for general corporate purposes, including funding additional capital expenditures.

At June 30, 2018, cash and cash equivalents totaled $11.3 million. In addition to cash and cash equivalents, we had approximately $188.6 million of available borrowing capacity under our Credit Agreement as of June 30, 2018. As of June  30, 2018, the borrowing base under the Credit Agreement was $286.9 million, the outstanding borrowings totaled $80.0 million and the outstanding letters of credit totaled $18.3 million. As of August 3, 2018, the borrowing base under the Credit Agreement was $282.3 million, the outstanding borrowings totaled $80.0 million and the outstanding letters of credit totaled$18.3million. At the same date, the available borrowing capacity under the Credit Agreement was $184.0 million.

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Cash Flows

The following table summarizes our cash flows for the periods indicated:

	Six months ended June 30,				Change
	2018		2017		Dollars		Percentage
	(in thousands)
Net cash provided by (used in) operating activities	$	64,305	$	(24,010)	$	88,315	NM
Net cash used in investing activities		(59,097)		(91,449)		32,352	(35.4)	%
Net cash provided by financing activities		3,465		128,195		(124,730)	(97.3)	%
Subtotal		8,673		12,736
Effect of exchange rate changes on cash and cash equivalents		(146)		—		(146)	NM
Net increase in cash	$	8,527	$	12,736

Analysis of  Cash Flow Changes Between the Six Months Ended June 30, 2018 and 2017

Operating Activities. Net cash provided by operating activities was $64.3 million for the Current Period, compared to net cash used in operating activities of $24.0 million for the Prior Period.  The $88.3 million increase in net cash provided by operating activities related primarily to increased net income adjusted for noncash items which was driven by a significant growth in revenue and improvement in gross margins resulting from recovering demand for our services as compared to the prior year period, as well as the financial earnings contribution of the Rockwater Merger.

Investing Activities. Net cash used in investing activities was $59.1 million for the Current Period, compared to $91.4 million for the Prior Period. The $32.4 million decrease in net cash used in investing activities was primarily due to the $55.5 million decrease in cash used for acquisitions, primarily related to the GRR Acquisition in March 10, 2017, net of an increase in cash used for capital expenditures during the Current Period of $21.4 million.

Financing Activities. Net cash provided by financing activities was $3.5 million for the Current Period, compared to cash provided by financing activities of $128.2 million for the Prior Period.  The $124.7 million decrease in net cash provided by financing activities was primarily due to non-recurring nature of the $128.5 million in net proceeds received from the issuance of shares in our IPO on April 26, 2017, including exercise of the over-allotment option.

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Credit Agreement

Our previous credit facility (the “Previous Credit Facility”), was amended  effective December 20, 2016, to extend the maturity date from February 28, 2018 to February 28, 2020 and reduce the revolving line of credit to $100.0 million.

On November 1, 2017, in connection with the closing of the Rockwater Merger (the “Closing”), SES Holdings and Select LLC, entered into a $300.0 million senior secured revolving credit facility (the “Credit Agreement”), by and among SES Holdings, as parent, Select LLC, as borrower, and certain of SES Holdings’ subsidiaries, as guarantors, and each of the lenders party thereto and Wells Fargo Bank, N.A., as administrative agent, issuing lender and swingline lender (the “Administrative Agent”). The Credit Agreement also has a sublimit of $40.0 million for letters of credit and a sublimit of $30.0 million for swingline loans. Subject to obtaining commitments from existing or new lenders, we have the option to increase the maximum amount under the Credit Agreement by $150.0 million during the first three years following the Closing. The maturity date of Credit Facility was also extended from February 28, 2020 to November 1, 2022.

In connection with our entry into the Credit Agreement, the obligations of SES Holdings and Select LLC under the Previous Credit Facility were repaid in full and the Previous Credit Facility was terminated.

The Credit Agreement permits extensions of credit up to the lesser of $300.0 million and a borrowing base that is determined by calculating the amount equal to the sum of (i) 85.0% of the Eligible Billed Receivables (as defined in the Credit Agreement), plus (ii) 75.0% of Eligible Unbilled Receivables (as defined in the Credit Agreement), provided that this amount will not equal more than 35.0% of the borrowing base, plus (iii) the lesser of (A) the product of 70.0% multiplied by the value of Eligible Inventory (as defined in the Credit Agreement) at such time and (B) the product of 85.0% multiplied by the Net Recovery Percentage (as defined in the Credit Agreement) identified in the most recent Acceptable Appraisal of Inventory (as defined in the Credit Agreement), multiplied by the value of Eligible Inventory at such time, provided that this amount will not equal more than 30.0% of the borrowing base, minus (iv) the aggregate amount of Reserves (as defined in the Credit Agreement), if any, established by the Administrative Agent from time to time, including, if any, the amount of the Dilution Reserve (as defined in the Credit Agreement). The borrowing base is calculated on a monthly basis pursuant to a borrowing base certificate delivered by Select LLC to the Administrative Agent.

Borrowings under the Credit Agreement bear interest, at Select LLC’s election, at either the (a) one‑, two‑, three‑ or six‑month LIBOR (“Eurocurrency Rate”) or (b) the greatest of (i) the federal funds rate plus 0.5%, (ii) the one‑month Eurocurrency Rate plus 1.0% and (iii) the Administrative Agent’s prime rate (the “Base Rate”), in each case plus an applicable margin, and interest shall be payable monthly in arrears. The applicable margin for Eurocurrency Rate loans ranges from 1.50% to 2.00% and the applicable margin for Base Rate loans ranges from 0.50% to 1.00%, in each case, depending on Select LLC’s average excess availability under the Credit Agreement. During the continuance of a bankruptcy event of default, automatically and during the continuance of any other default, upon the Administrative Agent’s or the required lenders’ election, all outstanding amounts under the Credit Agreement will bear interest at 2.00% plus the otherwise applicable interest rate.

The obligations under the Credit Agreement are guaranteed by SES Holdings and certain subsidiaries of SES Holdings and Select LLC and secured by a security interest in substantially all of the personal property assets of SES Holdings, Select LLC and their domestic subsidiaries.

The Credit Agreement contains certain customary representations and warranties, affirmative and negative covenants and events of default. If an event of default occurs and is continuing, the lenders may declare all amounts outstanding under the Credit Agreement to be immediately due and payable.

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In addition, the Credit Agreement restricts SES Holdings’ and Select LLC’s ability to make distributions on, or redeem or repurchase, its equity interests, except for certain distributions, including distributions of cash so long as, both at the time of the distribution and after giving effect to the distribution, no default exists under the Credit Agreement and either (a) excess availability at all times during the preceding 30 consecutive days, on a pro forma basis and after giving effect to such distribution, is not less than the greater of (1) 25.0% of the lesser of (A) the maximum revolver amount and (B) the then‑effective borrowing base and (2) $37.5 million or (b) if SES Holdings’ fixed charge coverage ratio is at least 1.0 to 1.0 on a pro forma basis, and excess availability at all times during the preceding 30 consecutive days, on a pro forma basis and after giving effect to such distribution, is not less than the greater of (1) 20.0% of the lesser of (A) the maximum revolver amount and (B) the then‑effective borrowing base and (2) $30.0 million. Additionally, the Credit Agreement generally permits Select LLC to make distributions to allow Select Inc. to make payments required under the existing Tax Receivable Agreements.

The Credit Agreement also requires SES Holdings to maintain a fixed charge coverage ratio of at least 1.0 to 1.0 at any time availability under the Credit Agreement is less than the greater of (i) 10.0% of the lesser of (A) the maximum revolver amount and (B) the then‑effective borrowing base and (ii) $15.0 million and continuing through and including the first day after such time that availability under the Credit Agreement has equaled or exceeded the greater of (i) 10.0% of the lesser of (A) the maximum revolver amount and (B) the then‑effective borrowing base and (ii) $15.0 million for 60 consecutive calendar days.

We were in compliance with all debt covenants as of June  30, 2018.

Contractual Obligations

Our contractual obligations include, among other things, our Credit Agreement and operating leases. Refer to Note 8—Debt in Part I, Item 1 of this Quarterly Report for an update to our contractual obligations as of June 30, 2018.

Critical Accounting Policies and Estimates

There were no changes to our critical accounting policies from those disclosed in our 2017 Form 10-K filed on March 19, 2018.

Recent Accounting Pronouncements

For information regarding new accounting policies or updates to existing accounting policies as a result of new accounting pronouncements, please refer to Note 2 - Significant Accounting Policies in Part I, Item 1 of this Quarterly Report.

Off Balance Sheet Arrangements

At June 30, 2018, we had no material off balance sheet arrangements, except for operating leases. As such, we are not exposed to any material financing, liquidity, market or credit risk that could arise had we engaged in such financing arrangements.

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Item 3. Quantitative and Qualitative Disclosures about Market Risk

The demand, pricing and terms for oilfield services provided by us are largely dependent upon the level of activity for the U.S. oil and gas industry. Industry conditions are influenced by numerous factors over which we have no control, including, but not limited to: the supply of and demand for oil and gas; current prices as well as expectations about future prices of oil and gas; the cost of exploring for, developing, producing and delivering oil and gas; the expected decline in rates of current production; the discovery rates of new oil and gas reserves; available pipeline and other transportation capacity; weather conditions; domestic and worldwide economic conditions; political instability in oil‑producing countries; environmental regulations; technical advances affecting energy consumption; the price and availability of alternative fuels; the ability of oil and gas producers to raise equity capital and debt financing; and merger and divestiture activity among oil and gas producers.

The level of activity in the U.S. oil and gas industry is volatile. Expected trends in oil and gas production activities may not continue and demand for our services may not reflect the level of activity in the industry. Any prolonged substantial reduction in oil and gas prices would likely affect oil and gas drilling and completion activity and therefore affect demand for our services. A material decline in oil and gas prices or U.S. activity levels could have a material adverse effect on our business, financial condition, results of operations and cash flows.

Interest Rate Risk

At June 30, 2018, we had approximately $80.0 million outstanding debt under our Credit Agreement. As of August 3, 2018, we had approximately $80.0 million of outstanding borrowings and approximately $184.0 million of available borrowing capacity under our Credit Agreement. Interest is calculated under the terms of our Credit Agreement based on our selection, from time to time, of one of the index rates available to us plus an applicable margin that varies based on certain factors. Assuming no change in the amount currently outstanding, the impact on interest expense of a 1% increase or decrease in the assumed weighted average interest rate would be approximately $0.8 million per year. We do not currently have or intend to enter into any derivative arrangements to protect against fluctuations in interest rates applicable to our outstanding indebtedness.

Foreign Currency Exchange Risk

We are exposed to fluctuations between the U.S. dollar and the Canadian dollar with regard to the activities of our Canadian subsidiary, acquired in the Rockwater Merger, which has designated the Canadian dollar as its functional currency. As such, future earnings are subject to change due to fluctuations in foreign currency exchange rates when transactions are denominated in currencies other than our functional currencies. Given the small size of this business relative to our overall operations, we do not currently have or intend to enter into any derivative arrangements to protect against fluctuations in exchange rates applicable to the Canadian dollar.

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Item 4. Controls and Procedures

Disclosure Controls and Procedures

As required by Rule 13a-15(d) under the Exchange Act, we have evaluated, under the supervision and with the participation of management, including our principal executive officer and principal financial officer, our internal controls over financial reporting (as defined in Rules 13a-15(e) and 15d‑15(e) under the Exchange Act) to determine whether any changes occurred during the period covered by this Quarterly Report on Form 10-Q that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting. Based upon that evaluation, our principal executive officer and principal financial officer concluded there were no such changes in our internal control over financial reporting during the quarter ended June 30, 2018.

On November 1, 2017, we acquired Rockwater (please refer to Note 3 to the accompanying consolidated financial statements for additional information). We are in the process of evaluating the internal controls of the acquired business and integrating it into our existing operations. As a result of these integration activities, certain controls will be evaluated and may be changed.

Changes in Internal Control over Financial Reporting

There were no changes in our internal control over financial reporting during the quarter ended June 30, 2018 that materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

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PART II – OTHER INFORMATION

Item 1. Legal Proceedings

We are not currently a party to any legal proceedings that, if determined adversely against us, individually or in the aggregate, would have a material adverse effect on our financial position, results of operations or cash flows. We are, however, named defendants in certain lawsuits, investigations and claims arising in the ordinary course of conducting our business, including certain environmental claims and employee-related matters, and we expect that we will be named defendants in similar lawsuits, investigations and claims in the future. While the outcome of these lawsuits, investigations and claims cannot be predicted with certainty, we do not expect these matters to have a material adverse impact on our business, results of operations, cash flows or financial condition. We have not assumed any liabilities arising out of these existing lawsuits, investigations and claims.

In December 2016, Rockwater was notified by the U.S. Attorney’s Office for the Middle District of Pennsylvania that it is being investigated for altering emissions control systems on several of its vehicles. We are cooperating with the investigation and have determined that mechanics servicing our vehicle fleet may have installed software on certain vehicles and modified a few other vehicles to deactivate or bypass the factory‑installed emissions control systems. At present, it appears that 31 vehicles in Pennsylvania were modified in this manner, apparently to improve vehicle performance and reliability. As a result of a company‑wide investigation undertaken voluntarily and in cooperation with the U.S. Department of Justice, we have determined that approximately 30 additional company vehicles outside of Pennsylvania may have been altered. As of the date of the initiation of the investigation, we operated approximately 1,400 vehicles in the U.S., and the modified vehicles constituted less than 5% of our fleet at such time. We are unable to predict at this time whether any administrative, civil or criminal charges will be brought against us, although we have learned that at least one employee, a service shop supervisor, may be the target of a criminal investigation, and it is possible that other individuals or we could become targets. We are cooperating with the U.S. Department of Justice in all aspects of the investigation and have instituted procedures to ensure that our mechanics do not tamper with or bypass any emissions control systems when they are performing vehicle maintenance, and we have also reached an agreement with the U.S. Department of Justice providing for either the restoration or removal from service of those vehicles that were modified. Although we are unable to predict the outcome of this investigation, we note that in similar circumstances, the EPA has imposed fines of up to $7,200 per altered vehicle and has also required the responsible party to disgorge any financial benefit that it may have derived.

Item 1A. Risk Factors

There have been no material changes to the Risk Factors disclosed in the 2017 Form 10-K.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds.

Issuer Purchases of Equity Securities

During the Current Quarter, we repurchased the shares shown in the table below to satisfy tax withholding obligations upon the vesting of restricted stock awarded to certain of our employees:

	Total Number of	Weighted Average Price
Period	Shares Purchased	Paid Per Share
April 1, 2018 to April 30, 2018	21,736	$	13.10
May 1, 2018 to May 31, 2018	—		—
June 1, 2018 to June 30, 2018	8,064	$	13.53
	29,800

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Item 3. Defaults Upon Senior Securities.

None.

Item 4. Mine Safety Disclosures.

Not applicable.

Item 5. Other Information.

None.

Item 6. Exhibits

The exhibits listed on the accompanying Exhibit Index are filed, furnished or incorporated by reference, as applicable, as part of this report, and such Exhibit Index is incorporated herein by reference.

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EXHIBIT INDEX

HIDDEN_ROW
Exhibit Number	Description
2.1	Agreement and Plan of Merger, dated as of July 18, 2017, by and among Select Energy Services, Inc., SES Holdings, LLC, Raptor Merger Sub, Inc., Raptor Merger Sub, LLC, Rockwater Energy Solutions, Inc. and Rockwater Energy Solutions, LLC (incorporated by reference herein to Exhibit 2.1 to Select Energy Services, Inc.’s Current Report on Form 8-K, filed on July 19, 2017).
3.1	Third Amended and Restated Certificate of Incorporation of Select Energy Services, Inc. (incorporated by reference herein to Exhibit 4.1 to Select Energy Services, Inc.’s Registration Statement on Form S-8, filed on November 2, 2017 (Registration No. 333-221282)).
3.2	Amended and Restated Bylaws of Select Energy Services, Inc. (incorporated by reference herein to Exhibit 3.2 to Select Energy Services, Inc.’s Registration Statement on Form S‑1, filed on March 2, 2017 (Registration No. 333‑ 216404)).
10.1	Form of Stock-Settled Incentive Award Grant Notice and Stock-Settled Incentive Award Agreement under the Select Energy Services, Inc. 2016 Equity Incentive Plan.
31.1	Certification of Chief Executive Officer required by Rules 13a‑14 and 15d‑14 under the Securities Exchange Act of 1934.
31.2	Certification of Chief Financial Officer required by Rules 13a‑14 and 15d‑14 under the Securities Exchange Act of 1934.
**32.1	Certification of Chief Executive Officer pursuant to 18 U.S.C. 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
**32.2	Certification of Chief Financial Officer pursuant to 18 U.S.C. 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
101	Interactive Data Files

** Furnished herewith

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SIGNATURE

Pursuant to the requirements of Section 13 or 15(d) of the Exchange Act, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	SELECT ENERGY SERVICES, INC.
Date: August 10, 2018	By:	/s/ Holli Ladhani
		Holli Ladhani
		President and Chief Executive Officer
Date: August 10, 2018	By:	/s/ Nick Swyka
		Nick Swyka
		Chief Financial Officer and Senior Vice President

62

EX-10.1

Exhibit 10.1

SELECT ENERGY SERVICES, INC.
2016 EQUITY INCENTIVE PLAN

STOCK-SETTLED INCENTIVE AWARD GRANT NOTICE

Pursuant to the terms and conditions of the Select Energy Services, Inc. 2016 Equity Incentive Plan, as amended from time to time (the “Plan”), Select Energy Services, Inc. (the “Company”) hereby grants to the individual listed below (“you” or the “Participant”) this stock-settled incentive award  (this “Award”) having the value set forth below.  This Award is subject to the terms and conditions set forth herein and in the Stock-Settled Incentive Award Agreement attached hereto as Exhibit A (the “Agreement”) and the Plan, each of which is incorporated herein by reference.  Capitalized terms used but not defined herein shall have the meanings set forth in the Plan.

Participant:	_____________________
Date of Grant:	_____________________
Award Type and Description:	Other Stock-Based Award granted pursuant to Section 6(h) of the Plan that has been designated as a Performance Award under Section 6(k) of the Plan. This Award represents the right to receive shares of Stock in an amount up to 200% of the Target Amount, subject to the terms and conditions set forth herein and in the Agreement. Your right to receive settlement of this Award in an amount ranging from 0% to 200% of the Target Amount, settled in a number of shares of Stock having a Fair Market Value equal to such amount. This Award shall vest and become earned and nonforfeitable upon (i) your satisfaction of the continued employment or service requirements described below under “Service Requirement” and (ii) the Committee’s certification of the level of achievement of the Performance Goal (defined below). The portion of the Target Amount actually earned upon satisfaction of the foregoing requirements is referred to herein as the “Earned Amount.”
Target Amount	[$ amount equal to 1.5x Salary] (the “Target Amount”).
Vesting Date:	May 4, 2020
Service Requirement:	Except as expressly provided in Sections 4 and 5 of the Agreement, you must (i) remain continuously employed by, or continuously provide services to, the Company or an Affiliate, as applicable, and (ii) continue serving in the same (or comparable) or higher position (as determined by the Committee), in each case, from the Date of Grant through the Vesting Date to be eligible to receive payment of this Award, which is based on the level of achievement with respect to the Performance Goal (as defined below).

Performance Goal:	Subject to the terms and conditions set forth in the Plan, the Agreement and herein, the portion of the Target Amount, if any, that becomes the Earned Amount on the Vesting Date will be determined in accordance with the following table:
	Stock Price at Vesting Date*	Percentage of Target Amount Earned
	Less than $20.00	0%
	At least $20.00, but less than $25.00	100%
	$25.00 or greater	200%
	*The “Stock Price at Vesting Date” shall equal the greater of (i) the Fair Market Value of a share of Stock on the Vesting Date, or (ii) the volume weighted average closing price of a share of Stock, as reported on the NYSE, for the 30 trading days preceding the Vesting Date.
Settlement:	Settlement of the Earned Amount shall be made solely in shares of Stock, which shall be delivered to you in accordance with Section 6 of the Agreement.

By your signature below, you agree to be bound by the terms and conditions of the Plan, the Agreement and this Stock-Settled Incentive Award Grant Notice (this “Grant Notice”).  You acknowledge that you have reviewed the Agreement, the Plan and this Grant Notice in their entirety and fully understand all provisions of the Agreement, the Plan and this Grant Notice.  You hereby agree to accept as binding, conclusive and final all decisions or interpretations of the Committee regarding any questions or determinations that arise under the Agreement, the Plan or this Grant Notice.  This Grant Notice may be executed in one or more counterparts (including portable document format (.pdf) and facsimile counterparts), each of which shall be deemed to be an original, but all of which together shall constitute one and the same agreement.

[Signature Page Follows]

2

IN WITNESS WHEREOF, the Company has caused this Grant Notice to be executed by an officer thereunto duly authorized, and the Participant has executed this Grant Notice, effective for all purposes as provided above.

COMPANY

Select Energy Services, Inc.

By:

Name: Holli C. Ladhani

Its: President and Chief Executive Officer

PARTICIPANT

Name:

Signature Page To
Stock-Settled Incentive Award Grant Notice

EXHIBIT A

STOCK-SETTLED INCENTIVE AWARD AGREEMENT

This Stock-Settled Incentive Award Agreement (together with the Grant Notice to which this Agreement is attached, this “Agreement”) is made as of the Date of Grant set forth in the Grant Notice to which this Agreement is attached by and between Select Energy Services, Inc., a Delaware corporation (the “Company”), and _________ (the “Participant”). Capitalized terms used but not specifically defined herein shall have the meanings specified in the Plan or the Grant Notice.

1.Definitions.  For purposes of this Agreement, the following terms shall have the meanings specified below.

(a)“Cause” means “cause” (or a term of like import) as defined under the Participant’s employment, consulting and/or severance agreement with the Company or an Affiliate or, in the absence of such an agreement or definition, shall mean a determination by the Company in its sole discretion that the Participant has: (i) engaged in gross negligence or willful misconduct in the performance of the Participant’s duties with respect to the Company or an Affiliate, (ii) materially breached any material provision of any written agreement between the Participant and the Company or an Affiliate or corporate policy or code of conduct established by the Company or an Affiliate and applicable to the Participant; (iii) willfully engaged in conduct that is materially injurious to the Company or an Affiliate;  or (iv) been convicted of, pleaded no contest to or received adjudicated probation or deferred adjudication in connection with, a felony involving fraud, dishonestly or moral turpitude (or a crime of similar import in a foreign jurisdiction).

(b)“Disability” means “disability” (or a term of like import) as defined under the Participant’s employment, consulting and/or severance agreement with the Company or an Affiliate or, in the absence of such an agreement or definition, shall mean the Participant’s inability to perform the Participant’s duties, with reasonable accommodation, due to a mental or physical impairment that continues (or can reasonably be expected to continue) for (i) 90 consecutive days or (ii) 180 days out of any 365-day period, which, in either case, shall only be deemed to occur following the written determination by the Company of any such occurrence of Disability.

(c)“Good Reason” means “good reason” (or a term of like import) as defined under the Participant’s employment, consulting and/or severance agreement with the Company or an Affiliate or, in the absence of such an agreement or definition, shall mean (i) a material diminution in the Participant’s base salary or (ii) the relocation of the geographic location of the Participant’s principal place of employment by more than 50 miles from the location of the Participant’s principal place of employment as of the Grant Date; provided that, in the case of the Participant’s assertion of Good Reason, (A) the condition described in the foregoing clauses must have arisen without the Participant’s consent; (B) the Participant must provide written notice to the Company of such condition in accordance with this Agreement within 45 days of the initial existence of the condition; (C) the condition specified in such notice must remain uncorrected for 30 days after receipt of such notice by the Company; and (D) the date of termination of the

Exhibit A-1

Participant’s employment or other service relationship with the Company or an Affiliate must occur within 90 days after such notice is received by the Company.

2.Award.  In consideration of the Participant’s employment with, or service to, the Company or its Affiliates and for other good and valuable consideration, the receipt and sufficiency of which is hereby acknowledged, effective as of the Date of Grant set forth in the Grant Notice (the “Date of Grant”), the Company hereby grants to the Participant this Award as set forth in the Grant Notice on the terms and conditions set forth in the Grant Notice, this Agreement and the Plan, which is incorporated herein by reference as a part of this Agreement. In the event of any inconsistency between the Plan and this Agreement (including, for the avoidance of doubt, with respect of the subject matter covered in Section 5), the terms of the Plan shall control.  Unless and until this Award has become earned in the manner set forth in the Grant Notice, the Participant will have no right to receive any Stock or other payments in respect of this Award.  Prior to settlement of this Award, this Award represent an unsecured obligation of the Company, payable only from the general assets of the Company.

3.Earning of this Award.  Except as otherwise set forth in Sections 4 and 5,  this Award shall vest in accordance with the Participant’s satisfaction of the vesting schedule set forth in the Grant Notice (the “Service Requirement”) based on the extent to which the Company has satisfied the Performance Goal set forth in the Grant Notice, which shall be determined by the Committee in its sole discretion following the Vesting Date (and any portion of this Award that does not become so earned shall be automatically forfeited). Unless and until this Award has become earned and settled in accordance with Section 6, the Participant will have no right to receive any dividends or other distribution with respect to the Stock that may ultimately be issued in settlement of this Award .

4.Effect of Termination of or Change in Employment or Service.

(a)Termination of Employment or Service without Cause or for Good Reason. Notwithstanding anything in the Grant Notice, this Agreement or the Plan to the contrary, upon the termination of the Participant’s employment or other service relationship with the Company or an Affiliate without Cause (and not due to the Participant’s death or Disability) by the Company or an Affiliate or by the Participant for Good Reason that occurs prior to the Vesting Date, then the Participant shall be deemed to have satisfied the Service Requirement with respect to this Award and this Award shall remain outstanding and, subject to the satisfaction of the Performance Goal, shall be eligible for settlement in accordance with Section 6.

(b)Termination of Employment or Service due to Disability or Death. Notwithstanding anything in the Grant Notice, this Agreement or the Plan to the contrary, upon the termination of the Participant’s employment or other service relationship with the Company or an Affiliate due to the Participant’s Disability or death that occurs prior to the Vesting Date, then the Participant shall be deemed to have satisfied the Service Requirement with respect to this Award and this Award shall remain outstanding and, subject to the satisfaction of the Performance Goal, shall be eligible for settlement in accordance with Section 6.

(c)Other Termination of Employment or Service. Except as otherwise provided in Section 4(a) or (b) or Section 5,  if the Participant has not satisfied the Service Requirement, then

A-2

upon the termination of the Participant’s employment or other service relationship with the Company or an Affiliate for any reason,  this Award will terminate automatically without any further action by the Company and will be forfeited without further notice and at no cost to the Company.

(d)Change in Employment or Service.  Except as otherwise provided in Section 4(a) or (b) or Section 5, if, prior to the Vesting Date, the Participant ceases to serve in the same (or comparable) or higher position (as determined by the Committee) for any reason (even if the Participant remains employed by, or continues to provide services to, the Company or an Affiliate), this Award will terminate automatically without any further action by the Company and will be forfeited without further notice and at no cost to the Company.

5.Change in Control.  In the event a Change in Control (so long as such Change in Control also constitutes a “change in control event” as defined in the Nonqualified Deferred Compensation Rules) occurs prior to the Vesting Date (the date of such occurrence, the “Change in Control Date”), so long as the Participant has remained continuously employed by, or has continuously provided services to, the Company or an Affiliate, as applicable, from the Date of Grant through the Change in  Control Date, then this Award shall vest as of the Change in Control Date based on the extent to which the Company has satisfied the Performance Goal set forth in the Grant Notice, assuming that the Performance Period ended on the Change in Control Date and the Stock Price at Vesting Date is equal to the Change in Control Price, which shall be determined by the Committee in its sole discretion following the Change in Control Date, and which shall be eligible for settlement in accordance with Section 6 except that settlement shall occur within 30 days following the Change in Control Date (and any portion of this Award that does not become so earned shall be automatically forfeited).

6.Settlement of this Award.  As soon as administratively practicable following the Committee’s certification of the level of attainment of the Performance Goal, but in no event later than 30 days following the Vesting Date,  the Company shall deliver to the Participant (or the Participant’s permitted transferee, if applicable) a number of shares of Stock having a Fair Market Value equal to the Earned Amount; provided, however, that any fractional shares of Stock that become payable hereunder shall be rounded down at the time shares of Stock are issued in settlement of this Award.  No fractional shares of Stock, nor the cash value of any fractional shares of Stock, shall be issuable or payable to the Participant pursuant to this Agreement. All shares of Stock, if any, issued hereunder shall be delivered either by delivering one or more certificates for such shares to the Participant or by entering such shares in book-entry form, as determined by the Committee in its sole discretion.  The value of shares of Stock shall not bear any interest owing to the passage of time.  Neither this Section 6 nor any action taken pursuant to or in accordance with this Agreement shall be construed to create a trust or a funded or secured obligation of any kind.

7.Tax Withholding.  To the extent that the receipt, vesting or settlement of this Award results in compensation income or wages to the Participant for federal, state, local and/or foreign tax purposes, the Participant shall make arrangements satisfactory to the Company for the satisfaction of obligations for the payment of withholding taxes and other tax obligations relating to this Award, which arrangements include the delivery of cash or cash equivalents, Stock (including previously owned Stock, net settlement, a broker-assisted sale, or other cashless withholding or reduction of the amount of shares otherwise issuable or delivered pursuant to this

A-3

Award), other property, or any other legal consideration the Committee deems appropriate. If such tax obligations are satisfied through net settlement or the surrender of previously owned Stock, the maximum number of shares of Stock that may be so withheld (or surrendered) shall be the number of shares of Stock that have an aggregate Fair Market Value on the date of withholding or surrender equal to the aggregate amount of such tax liabilities determined based on the greatest withholding rates for federal, state, local and/or foreign tax purposes, including payroll taxes, that may be utilized without creating adverse accounting treatment for the Company with respect to this Award, as determined by the Committee. The Participant acknowledges that there may be adverse tax consequences upon the receipt, vesting or settlement of this Award or disposition of the underlying shares and that the Participant has been advised, and hereby is advised, to consult a tax advisor.  The Participant represents that the Participant is in no manner relying on the Board, the Committee, the Company or an Affiliate or any of their respective managers, directors, officers, employees or authorized representatives (including, without limitation, attorneys, accountants, consultants, bankers, lenders, prospective lenders and financial representatives) for tax advice or an assessment of such tax consequences.

8.Non-Transferability.  During the lifetime of the Participant,  this Award may not be sold, pledged, assigned or transferred in any manner other than by will or the laws of descent and distribution, unless and until the shares of Stock have been issued in settlement of this Award, and all restrictions applicable to such shares have lapsed.  Neither this Award nor any interest or right therein shall be liable for the debts, contracts or engagements of the Participant or his or her successors in interest or shall be subject to disposition by transfer, alienation, anticipation, pledge, encumbrance, assignment or any other means, whether such disposition be voluntary or involuntary or by operation of law by judgment, levy, attachment, garnishment or any other legal or equitable proceedings (including bankruptcy), and any attempted disposition thereof shall be null and void and of no effect, except to the extent that such disposition is permitted by the preceding sentence.

9.Compliance with Applicable Law.  Notwithstanding any provision of this Agreement to the contrary, the issuance of shares of Stock hereunder will be subject to compliance with all applicable requirements of applicable law with respect to such securities and with the requirements of any stock exchange or market system upon which the Stock may then be listed.  No shares of Stock will be issued hereunder if such issuance would constitute a violation of any applicable law or regulation or the requirements of any stock exchange or market system upon which the Stock may then be listed.  In addition, shares of Stock will not be issued hereunder unless (a) a registration statement under the Securities Act is in effect at the time of such issuance with respect to the shares to be issued or (b) in the opinion of legal counsel to the Company, the shares to be issued are permitted to be issued in accordance with the terms of an applicable exemption from the registration requirements of the Securities Act.  The inability of the Company to obtain from any regulatory body having jurisdiction the authority, if any, deemed by the Company’s legal counsel to be necessary for the lawful issuance and sale of any shares of Stock hereunder will relieve the Company of any liability in respect of the failure to issue such shares as to which such requisite authority has not been obtained.  As a condition to any issuance of Stock hereunder, the Company may require the Participant to satisfy any requirements that may be necessary or appropriate to evidence compliance with any applicable law or regulation and to make any representation or warranty with respect to such compliance as may be requested by the Company.

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10.Legends.  If a stock certificate is issued with respect to shares of Stock issued hereunder, such certificate shall bear such legend or legends as the Committee deems appropriate in order to reflect the restrictions set forth in this Agreement and to ensure compliance with the terms and provisions of this Agreement, the rules, regulations and other requirements of the Securities and Exchange Commission, any applicable laws or the requirements of any stock exchange on which the Stock is then listed.  If the shares of Stock issued hereunder are held in book-entry form, then such entry will reflect that the shares are subject to the restrictions set forth in this Agreement.

11.Rights as a Stockholder.  The Participant shall have no rights as a stockholder of the Company with respect to any shares of Stock that may become deliverable hereunder unless and until the Participant has become the holder of record of such shares of Stock, and no adjustments shall be made for dividends in cash or other property, distributions or other rights in respect of any such shares of Stock, except as otherwise specifically provided for in the Plan or this Agreement.

12.Execution of Receipts and Releases.  Any issuance or transfer of shares of Stock or other property to the Participant or the Participant’s legal representative, heir, legatee or distributee, in accordance with this Agreement shall be in full satisfaction of all claims of such person hereunder.  As a condition precedent to such payment or issuance, the Company may require the Participant or the Participant’s legal representative, heir, legatee or distributee to execute (and not revoke within any time provided to do so) a release and receipt therefor in such form as it shall determine appropriate; provided, however, that any review period under such release will not modify the date of settlement with respect to the Earned Amount.

13.No Right to Continued Employment, Service or Awards. Nothing in the adoption of the Plan, nor this Award thereunder pursuant to the Grant Notice and this Agreement, shall confer upon the Participant the right to continued employment by, or a continued service relationship with, the Company or any Affiliate, or any other entity, or affect in any way the right of the Company or any such Affiliate, or any other entity to terminate such employment or other service relationship at any time. The grant of this Award is a one-time benefit and does not create any contractual or other right to receive a grant of Awards or benefits in lieu of Awards in the future. Any future Awards will be granted at the sole discretion of the Company.

14.Lock-Up Period. If so requested by the Company or any representative of the underwriters in connection with an underwritten public offering of the Company’s securities (a “Public Offering”), the Participant (or other holder) shall not sell or otherwise transfer or distribute any Stock or other securities of the Company (or any securities convertible or exchangeable or exercisable for Stock or engage in any hedging transactions relating to Stock) during the period beginning 14 days prior to the expected date of the “pricing” of such Public Offering and continuing for the 180-day period (or such other period as may be requested in writing by such underwriters and agreed to in writing by the Company) following the effective date of such Public Offering. The Company may impose stop-transfer instructions with respect to securities subject to the foregoing restrictions until the end of such period.

15.Legal and Equitable Remedies.  The Participant acknowledges that a violation or attempted breach of any of the Participant's covenants and agreements in this Agreement will cause

A-5

such damage as will be irreparable, the exact amount of which would be difficult to ascertain and for which there will be no adequate remedy at law, and accordingly, the parties hereto agree that the Company and its Affiliates shall be entitled as a matter of right to an injunction issued by any court of competent jurisdiction, restraining the Participant or the affiliates, partners or agents of the Participant from such breach or attempted violation of such covenants and agreements, as well as to recover from the Participant any and all costs and expenses sustained or incurred by the Company or any Affiliate in obtaining such an injunction, including, without limitation, reasonable attorneys' fees. The parties to this Agreement agree that no bond or other security shall be required in connection with such injunction. Any exercise by either of the parties to this Agreement of its rights pursuant to this Section 15 shall be cumulative and in addition to any other remedies to which such party may be entitled.

16.Notices.  All notices and other communications under this Agreement shall be in writing and shall be delivered to the parties at the following addresses (or at such other address for a party as shall be specified by like notice):

If to the Company, unless otherwise designated by the Company in a written notice to the Participant (or other holder):

Select Energy Services, Inc.
Attn: Senior Vice President, General Counsel and Secretary
515 Post Oak Blvd., Suite 200
Houston, Texas 77027

If to the Participant, at the Participant’s last known address on file with the Company.

Any notice that is delivered personally or by overnight courier or telecopier in the manner provided herein shall be deemed to have been duly given to the Participant when it is mailed by the Company or, if such notice is not mailed to the Participant, upon receipt by the Participant. Any notice that is addressed and mailed in the manner herein provided shall be conclusively presumed to have been given to the party to whom it is addressed at the close of business, local time of the recipient, on the fourth day after the day it is so placed in the mail.

17.Consent to Electronic Delivery; Electronic Signature.  In lieu of receiving documents in paper format, the Participant agrees, to the fullest extent permitted by law, to accept electronic delivery of any documents that the Company may be required to deliver (including, but not limited to, prospectuses, prospectus supplements, grant or award notifications and agreements, account statements, annual and quarterly reports and all other forms of communications) in connection with this and any other Award made or offered by the Company. Electronic delivery may be via a Company electronic mail system or by reference to a location on a Company intranet to which the Participant has access. The Participant hereby consents to any and all procedures the Company has established or may establish for an electronic signature system for delivery and acceptance of any such documents that the Company may be required to deliver, and agrees that his or her electronic signature is the same as, and shall have the same force and effect as, his or her manual signature.

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18.Agreement to Furnish Information.  The Participant agrees to furnish to the Company all information requested by the Company to enable it to comply with any reporting or other requirement imposed upon the Company by or under any applicable statute or regulation.

19.Entire Agreement; Amendment.  This Agreement constitutes the entire agreement of the parties with regard to the subject matter hereof, and contains all the covenants, promises, representations, warranties and agreements between the parties with respect to this Award granted hereby; provided¸ however, that the terms of this Agreement shall not modify and shall be subject to the terms and conditions of any employment, consulting and/or severance agreement between the Company (or an Affiliate or other entity) and the Participant in effect as of the date a determination is to be made under this Agreement.  Without limiting the scope of the preceding sentence, except as provided therein, all prior understandings and agreements, if any, among the parties hereto relating to the subject matter hereof are hereby null and void and of no further force and effect.  The Committee may, in its sole discretion, amend this Agreement from time to time in any manner that is not inconsistent with the Plan; provided, however, that except as otherwise provided in the Plan or this Agreement, any such amendment that materially reduces the rights of the Participant shall be effective only if it is in writing and signed by both the Participant and an authorized officer of the Company.

20.Severability and Waiver.  If a court of competent jurisdiction determines that any provision of this Agreement is invalid or unenforceable, then the invalidity or unenforceability of such provision shall not affect the validity or enforceability of any other provision of this Agreement, and all other provisions shall remain in full force and effect. Waiver by any party of any breach of this Agreement or failure to exercise any right hereunder shall not be deemed to be a waiver of any other breach or right. The failure of any party to take action by reason of such breach or to exercise any such right shall not deprive the party of the right to take action at any time while or after such breach or condition giving rise to such rights continues.

21.Clawback.  Notwithstanding any provision in the Grant Notice, this Agreement or the Plan to the contrary, to the extent required by (a) applicable law, including, without limitation, the requirements of the Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010, any Securities and Exchange Commission rule or any applicable securities exchange listing standards and/or (b) any policy that may be adopted or amended by the Board from time to time, all shares of Stock issued hereunder shall be subject to forfeiture, repurchase, recoupment and/or cancellation to the extent necessary to comply with such law(s) and/or policy.

22.Governing Law. THIS AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF DELAWARE APPLICABLE TO CONTRACTS MADE AND TO BE PERFORMED THEREIN, EXCLUSIVE OF THE CONFLICT OF LAWS PROVISIONS OF DELAWARE LAW.

23.Successors and Assigns.  The Company may assign any of its rights under this Agreement without the Participant’s consent.  This Agreement will be binding upon and inure to the benefit of the successors and assigns of the Company.  Subject to the restrictions on transfer set forth herein and in the Plan, this Agreement will be binding upon the Participant and the Participant's beneficiaries, executors, administrators and the person(s) to whom this Award may be transferred by will or the laws of descent or distribution.

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24.Headings. Headings are for convenience only and are not deemed to be part of this Agreement.

25.Counterparts.  The Grant Notice may be executed in one or more counterparts, each of which shall be deemed an original and all of which together shall constitute one instrument.  Delivery of an executed counterpart of the Grant Notice by facsimile or portable document format (.pdf) attachment to electronic mail shall be effective as delivery of a manually executed counterpart of the Grant Notice.

26.Section 409A.  Notwithstanding anything herein or in the Plan to the contrary, this Award is intended to comply with the applicable requirements of the Nonqualified Deferred Compensation Rules and shall be construed and interpreted in accordance with such intent. If  the Participant is deemed to be a “specified employee” within the meaning of the Nonqualified Deferred Compensation Rules, as determined by the Committee, at a time when the Participant becomes eligible for settlement of this Award upon his “separation from service” within the meaning of the Nonqualified Deferred Compensation Rules, then to the extent necessary to prevent any accelerated or additional tax under the Nonqualified Deferred Compensation Rules, such settlement will be delayed until the earlier of: (a) the date that is six months following the Participant’s separation from service and (b) the Participant’s death.  Notwithstanding the foregoing, the Company and its Affiliates make no representations that this Award is compliant with the Nonqualified Deferred Compensation Rules and in no event shall the Company or any Affiliate be liable for all or any portion of any taxes, penalties, interest or other expenses that may be incurred by the Participant on account of non-compliance with the Nonqualified Deferred Compensation Rules.

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EX-31.1

EXHIBIT 31.1

Certification of Chief Executive Officer
pursuant to Rule 13a-14(a) and Rule 15d-14(a)
of the Securities Exchange Act OF 1934, as amended

I, Holli Ladhani, certify that:

1. I have reviewed this quarterly report of Select Energy Services, Inc. (the “registrant”);

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)) 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. 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

c. 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:   August 10, 2018

/s/ Holli Ladhani

Holli Ladhani

President and Chief Executive Officer

(Principal Executive Officer)

EX-31.2

Exhibit 31.2

Certification of Chief Financial Officer
pursuant to Rule 13a-14(a) and Rule 15d-14(a)
of the Securities Exchange Act OF 1934, as amended

I, Nick Swyka, certify that:

1. I have reviewed thisquarterly report of Select Energy Services, Inc.(the “registrant”);

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)) 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. 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

c. 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:   August 10, 2018

/s/ Nick Swyka

Nick Swyka

Chief Financial Officer and Senior Vice President

(Principal Financial Officer and Principal Accounting Officer)

EX-32.1

Exhibit 32.1

Certification of
Chief Executive Officer 
under Section 906 of the
Sarbanes Oxley Act of 2002, 18 U.S.C. § 1350

In connection with the quarterly report of Select Energy Services, Inc. (the “Company”), as filed with the Securities and Exchange Commission on the date hereof (the “Report”), Holli Ladhani, Chief Executive Officer of the Company, hereby certifies, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to her knowledge:  

(1) the Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

(2) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

May 19
Date:   August 10, 2018
	/s/ Holli Ladhani
	Holli Ladhani
	President and Chief Executive Officer
	(Principal Executive Officer)

EX-32.2

Exhibit 32.2

Certification of
Chief Financial Officer 
under Section 906 of the
Sarbanes Oxley Act of 2002, 18 U.S.C. § 1350

In connection with the quarterly report of Select Energy Services, Inc. (the “Company”), as filed with the Securities and Exchange Commission on the date hereof (the “Report”), Nick Swyka, Chief Financial Officer of the Company,  hereby certifies, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to his knowledge:  

(1) the Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

(2) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date:    August 10,  2018
	/s/ Nick Swyka
	Nick Swyka
	Chief Financial Officer and Senior Vice President
	(Principal Financial Officer and Principal Accounting Officer)

XML

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2018	Aug. 03, 2018
Entity Registrant Name	Select Energy Services, Inc.
Entity Central Index Key	0001693256
Document Type	10-Q
Document Period End Date	Jun. 30, 2018
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Non-accelerated Filer
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q2
Class A Common Stock
Entity Common Stock, Shares Outstanding		79,337,119
Class B Common Stock
Entity Common Stock, Shares Outstanding		27,351,022

XML

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Current assets
Cash and cash equivalents	$ 11,301	$ 2,774
Accounts receivable trade, net of allowance for doubtful accounts of $3,762 and $2,979, respectively	425,217	373,633
Accounts receivable, related parties	820	7,669
Inventories	51,680	44,598
Prepaid expenses and other current assets	29,800	17,842
Total current assets	518,818	446,516
Property and equipment	1,063,847	1,034,995
Accumulated depreciation	(580,102)	(560,886)
Property and equipment, net	483,745	474,109
Goodwill	278,359	273,421
Other intangible assets, net	148,908	156,066
Other assets	3,912	6,256
Total assets	1,433,742	1,356,368
Current liabilities
Accounts payable	66,756	52,579
Accounts payable and accrued expenses, related parties	3,924	2,772
Accrued salaries and benefits	14,394	21,324
Accrued insurance	23,260	12,510
Sales tax payable	9,870	12,931
Accrued expenses and other current liabilities	96,409	81,112
Current portion of capital lease obligations	1,468	1,965
Total current liabilities	216,081	185,193
Accrued lease obligations	19,220	18,979
Other long term liabilities	9,629	13,827
Long-term debt	80,000	75,000
Total liabilities	324,930	292,999
Commitments and contingencies (Note 9)
Preferred stock, $0.01 par value; 50,000,000 shares authorized and no shares issued and outstanding as of June 30, 2018 and December 31, 2017
Additional paid-in capital	790,699	673,141
Retained earnings (accumulated deficit)	9,203	(17,859)
Accumulated other comprehensive (deficit) income	(148)	302
Total stockholders’ equity	800,821	656,647
Noncontrolling interests	307,991	406,722
Total equity	1,108,812	1,063,369
Total liabilities and equity	1,433,742	1,356,368
Class A Common Stock
Current liabilities
Common stock	773	592
Total equity	773	592
Class A-2 Common Stock
Current liabilities
Common stock		67
Total equity		67
Class B Common Stock
Current liabilities
Common stock	294	404
Total equity	$ 294	$ 404

XML

CONSOLIDATED BALANCE SHEETS (Parentheticals) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Allowance for doubtful accounts	$ 3,762	$ 2,979
Preferred Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Preferred Stock, Shares Authorized	50,000,000	50,000,000
Preferred Stock, Shares Issued	0	0
Preferred Stock, Shares Outstanding	0	0
Class A Common Stock
Common Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Common Stock, Shares Authorized	350,000,000	350,000,000
Common Stock, Shares, Issued	77,298,660	59,182,176
Common Stock, Shares, Outstanding	77,298,660	59,182,176
Class A-2 Common Stock
Common Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Common Stock, Shares Authorized	40,000,000	40,000,000
Common Stock, Shares, Issued	0	6,731,845
Common Stock, Shares, Outstanding	0	6,731,845
Class B Common Stock
Common Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Common Stock, Shares Authorized	150,000,000	150,000,000
Common Stock, Shares, Issued	29,383,320	40,331,989
Common Stock, Shares, Outstanding	29,383,320	40,331,989

XML

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Revenue
Water solutions and related services	$ 297,446	$ 107,812	$ 579,001	$ 186,189
Accommodations and rentals	15,949	13,327	30,693	22,842
Wellsite completion and construction services	15,045	13,310	31,511	25,343
Oilfield chemical product sales	64,807		128,437
Total revenue	393,247	134,449	769,642	234,374
Costs of revenue
Water solutions and related services	223,758	78,028	439,183	138,649
Accommodations and rentals	10,773	10,799	21,438	18,722
Wellsite completion and construction services	13,043	10,848	27,433	21,267
Oilfield chemical product sales	58,500		115,584
Depreciation and amortization	30,445	22,520	61,327	43,724
Total costs of revenue	336,519	122,195	664,965	222,362
Gross profit	56,728	12,254	104,677	12,012
Operating expenses
Selling, general and administrative	26,871	23,254	52,552	33,211
Depreciation and amortization	807	491	1,348	937
Impairment of property and equipment	2,282		2,282
Impairment of investment			2,000
Lease abandonment costs	1,973	418	3,097	2,281
Total operating expenses	31,933	24,163	61,279	36,429
Income (loss) from operations	24,795	(11,909)	43,398	(24,417)
Other income (expense)
Interest expense, net	(1,342)	(671)	(2,493)	(1,401)
Foreign currency losses, net	(340)		(740)
Other income, net	2,060	1,952	1,602	3,016
Income (loss) before tax expense	25,173	(10,628)	41,767	(22,802)
Tax (expense) benefit	(150)	138	(612)	32
Net income (loss)	25,023	(10,490)	41,155	(22,770)
Less: net (income) loss attributable to noncontrolling interests	(8,060)	6,274	(14,093)	14,382
Net income (loss) attributable to Select Energy Services, Inc.	16,963	(4,216)	27,062	(8,388)
EARNINGS PER SHARE
Allocation of net income (loss) attributable to, Diluted	16,991	(4,216)	27,128	(8,388)
Class A Common Stock
Other income (expense)
Net income (loss) attributable to Select Energy Services, Inc.	16,963	(2,184)	25,784	(3,200)
EARNINGS PER SHARE
Allocation of net income (loss) attributable to, Diluted	$ 16,991	$ (2,184)	$ 25,855	$ (3,200)
Weighted average shares outstanding, basic	71,412,158	14,075,052	65,270,048	8,999,294
Net income (loss) per share attributable to common stockholders, basis	$ 0.24	$ (0.16)	$ 0.40	$ (0.36)
Weighted average shares outstanding, diluted	71,745,808	14,075,052	65,731,977	8,999,294
Net income (loss) per share attributable to common stockholders, diluted	$ 0.24	$ (0.16)	$ 0.39	$ (0.36)
Class A-1 Common Stock
Other income (expense)
Net income (loss) attributable to Select Energy Services, Inc.		$ (2,032)		$ (5,188)
EARNINGS PER SHARE
Allocation of net income (loss) attributable to, Diluted		$ (2,032)		$ (5,188)
Weighted average shares outstanding, basic		13,092,308		14,587,845
Net income (loss) per share attributable to common stockholders, basis		$ (0.16)		$ (0.36)
Weighted average shares outstanding, diluted		13,092,308		14,587,845
Net income (loss) per share attributable to common stockholders, diluted		$ (0.16)		$ (0.36)
Class A-2 Common Stock
Other income (expense)
Net income (loss) attributable to Select Energy Services, Inc.			$ 1,278
EARNINGS PER SHARE
Allocation of net income (loss) attributable to, Diluted			$ 1,273
Weighted average shares outstanding, basic			3,235,746
Net income (loss) per share attributable to common stockholders, basis			$ 0.40
Weighted average shares outstanding, diluted			3,235,746
Net income (loss) per share attributable to common stockholders, diluted			$ 0.39
Class B Common Stock
EARNINGS PER SHARE
Weighted average shares outstanding, basic	34,677,182	38,462,541	37,488,964	38,462,541
Weighted average shares outstanding, diluted	34,677,182	38,462,541	37,488,964	38,462,541

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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
Net income (loss)	$ 25,023	$ (10,490)	$ 41,155	$ (22,770)
Other comprehensive income (loss)
Foreign currency translation adjustment, net of tax of $0	(191)		(450)
Net change in unrealized loss	(191)		(450)
Comprehensive income (loss)	24,832	(10,490)	40,705	(22,770)
Less: comprehensive (income) loss attributable to noncontrolling interests	(7,998)	6,274	(13,939)	14,382
Comprehensive income (loss) attributable to Select Energy Services, Inc.	$ 16,834	$ (4,216)	$ 26,766	$ (8,388)

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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
Foreign currency translation adjustment, tax amount	$ 0	$ 0	$ 0	$ 0

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CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - USD ($) $ in Thousands	Class A Common Stock	Class A-1 Common Stock	Class A-2 Common Stock	Class B Common Stock	Total Stockholders’ Equity	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive Income (Loss)	Noncontrolling Interests	Total
Beginning balance at Dec. 31, 2016	$ 38	$ 161		$ 385	$ 112,716	$ 113,175	$ (1,043)		$ 221,992	$ 334,708
Beginning balance (in shares) at Dec. 31, 2016	3,802,972	16,100,000		38,462,541
Noncontrolling interest in subsidiary									(309)	(309)
Equity-based compensation					543	543			689	1,232
Conversion of Class A-2 to Class A	$ 161	$ (161)
Conversion of Class A-2 to Class A (in shares)	16,100,000	(16,100,000)
Issuance of shares for acquisition	$ 4				3,305	3,301			4,195	7,500
Issuance of shares for acquisition (in shares)	403,368
Issuance of shares for initial public offering	$ 100				87,376	87,276			41,128	128,504
Issuance of shares for initial public offering (in shares)	10,005,000
Net income (loss)					(8,388)		(8,388)		(14,382)	(22,770)
Ending balance at Jun. 30, 2017	$ 303			$ 385	195,552	204,295	(9,431)		253,313	448,865
Ending balance (in shares) at Jun. 30, 2017	30,311,340			38,462,541
Beginning balance at Dec. 31, 2017	$ 592		$ 67	$ 404	656,647	673,141	(17,859)	$ 302	406,722	1,063,369
Beginning balance (in shares) at Dec. 31, 2017	59,182,176		6,731,845	40,331,989
Noncontrolling interest in subsidiary									(280)	(280)
Equity-based compensation					3,617	3,617			1,848	5,465
Issuance of restricted shares	$ 4				2,265	2,261			(2,265)
Issuance of restricted shares (in shares)	430,595
Conversion of Class A-2 to Class A	$ 67		$ (67)
Conversion of Class A-2 to Class A (in shares)	6,731,839		(6,731,839)
Conversion of Class B to Class A	$ 110			$ (110)	111,803	111,803			(111,803)
Conversion of Class B to Class A (in shares)	10,948,669			(10,948,669)
ESPP shares issued					50	50			4	54
ESPP shares issued (in shares)	3,986
Stock options exercised					376	376			1	377
Stock options exercised (in shares)	37,209
Issuance of shares for initial public offering					104	104			(104)
Issuance of shares for initial public offering (in shares)	27,860
Repurchase of common stock					(583)	(583)			(74)	(657)
Repurchase of common stock ( in shares)	(45,034)		(6)
Restricted shares forfeited					(70)	(70)			70
Restricted shares forfeited (in shares)	(18,640)
Foreign currency translation adjustment					(450)			(450)	(221)	(671)
Net income (loss)					27,062		27,062		14,093	41,155
Ending balance at Jun. 30, 2018	$ 773			$ 294	$ 800,821	$ 790,699	$ 9,203	$ (148)	$ 307,991	$ 1,108,812
Ending balance (in shares) at Jun. 30, 2018	77,298,660			29,383,320

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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash flows from operating activities
Net income (loss)	$ 41,155	$ (22,770)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities
Depreciation and amortization	62,675	44,661
Gain on disposal of property and equipment	(1,503)	(2,919)
Bad debt expense	876	708
Amortization of debt issuance costs	344	618
Equity-based compensation	5,465	1,232
Impairment of property and equipment	2,282
Impairment of investment	2,000
Other operating items, net	291	(237)
Changes in operating assets and liabilities
Accounts receivable	(46,057)	(47,998)
Prepaid expenses and other assets	(17,848)	(830)
Accounts payable and accrued liabilities	14,625	3,525
Net cash provided by (used in) operating activities	64,305	(24,010)
Cash flows from investing activities
Acquisitions, net of cash received		(55,507)
Purchase of property and equipment	(63,050)	(41,680)
Proceeds received from sale of property and equipment	3,953	5,738
Net cash used in investing activities	(59,097)	(91,449)
Cash flows from financing activities
Proceeds from revolving line of credit and issuance of long-term debt	25,000	34,000
Payments on long-term debt	(20,000)	(34,000)
Payments of capital lease obligations	(1,029)
Proceeds from initial public offering		140,070
Proceeds from share issuance	431
Payments incurred for initial public offering		(11,566)
Distributions to noncontrolling interests	(280)	(309)
Other	(657)
Net cash provided by financing activities	3,465	128,195
Effect of exchange rate changes on cash	(146)
Net increase in cash and cash equivalents	8,527	12,736
Cash and cash equivalents, beginning of period	2,774	40,041
Cash and cash equivalents, end of period	11,301	52,777
Supplemental cash flow disclosure:
Cash paid for interest	1,959	849
Cash (refunds) paid for income taxes	(1,188)	27
Supplemental disclosure of noncash investing activities:
Capital expenditures included in accounts payable and accrued liabilities	$ 25,013	$ 4,961

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BUSINESS AND BASIS OF PRESENTATION

6 Months Ended

Jun. 30, 2018

BUSINESS AND BASIS OF PRESENTATION

BUSINESS AND BASIS OF PRESENTATION

NOTE 1—BUSINESS AND BASIS OF PRESENTATION

Description of the business:  Select Energy Services, Inc. (“we,” “Select Inc.” or the “Company”) was incorporated as a Delaware corporation on November 21, 2016. The Company is a holding company whose sole material asset consists of a membership interest in SES Holdings, LLC (“SES Holdings”).

On November 1, 2017, the Company completed the transactions in which subsidiaries of Select Inc. and SES Holdings merged with Rockwater Energy Solutions, Inc. (“Rockwater”) and Rockwater Energy Solutions, LLC (“Rockwater LLC”), respectively, in a stock-for-stock or unit-for-unit transaction (the “Rockwater Merger”). Rockwater operations described in this report describe the operations of Rockwater LLC. See Note 3—Acquisitions for further discussion.

We are a leading provider of total water management and chemical solutions to the oil and gas industry in the United States and Western Canada. The oilfield water services market has grown rapidly over the past decade, driven by advances in drilling, completion and production technologies. Within the major unconventional onshore oil and gas plays in the United States, we believe we are a market leader in sourcing, transfer (both by permanent pipeline and temporary hose) and temporary containment of water prior to its use in drilling and completion activities associated with hydraulic fracturing or “fracking,” which we collectively refer to as “pre‑frac water services.” We also provide well testing and flowback services immediately following the well completion. In most of our areas of operations, we provide additional complementary water‑related services that support oil and gas well completion and production activities including monitoring, treatment, hauling, recycling and disposal. In addition to our water-related services, we also develop and manufacture specialty chemicals used in frac fluid systems and production chemicals used to enhance performance over the life of a well. We believe we are the only oilfield services company that provides total water solutions together with complementary chemical products and related expertise, which we believe gives us a unique competitive advantage in our industry.

We also offer wellsite services that complement our total water management and chemical solutions offering. These services include equipment rental, accommodations, crane and logistics services, wellsite and pipeline construction, field and well services, sand hauling and fluid logistics services. In addition, we provide water transfer, fluid hauling, containment and rental services in Canada.

Reorganization:  On December 20, 2016, Select Inc. completed a private placement (the “Select 144A Offering”) of 16,100,000 shares of Select Inc. Class A‑1 common stock, par value $0.01 per share (“Class A-1 Common Stock”) at an offering price of $20.00 per share. In conjunction with the Select 144A Offering, SES Holdings’ then existing Class A and Class B units were converted into a single class of common units (the “SES Holdings LLC Units”) and SES Holdings effected a 10.3583 for 1 unit split. In exchange for the contribution of all net proceeds from the Select 144A Offering to SES Holdings, SES Holdings issued 16,100,000 SES Holdings LLC Units to Select Inc., and Select Inc. became the sole managing member of SES Holdings. Select Inc. issued 38,462,541 shares of its Class B common stock, par value $0.01 per share (“Class B Common Stock”), to the other member of SES Holdings, SES Legacy Holdings, LLC (“Legacy Owner Holdco”) or one share for each SES Holdings LLC Unit held by Legacy Owner Holdco. Select Inc. also acquired 3,802,972 SES Holdings LLC Units from certain legacy owners (the “Contributing Legacy Owners”) in exchange for the issuance of 3,802,972 shares of Select Inc. Class A common stock, par value $0.01 per share (“Class A Common Stock”). Upon the effectiveness of a shelf registration statement registering such shares for resale on June 13, 2017, all shares of Class A-1 Common Stock converted into shares of Class A Common Stock on a one-for-one basis. Refer below for further discussion. Shareholders of Class A Common Stock, and Class B Common Stock vote together as a single class on all matters, subject to certain exceptions in the Company’s amended and restated certificate of incorporation. Holders of Class B Common Stock have voting rights only and are not entitled to an economic interest in Select Inc. based on their ownership of Class B Common Stock. The reorganization transactions were treated as a combination of entities under common control with assets and liabilities transferred at their carrying amounts in a manner similar to a pooling of interests.

Initial Public Offering: On April 26, 2017, the Company completed its initial public offering (“IPO”) of 8,700,000 shares of Class A Common Stock at a price of $14.00 per share. On May 10, 2017, the underwriters of the IPO exercised their over-allotment option to purchase an additional 1,305,000 shares of Class A Common Stock at the IPO price of $14.00 per share. After deducting underwriting discounts and commissions and estimated offering expenses payable by it, the Company received $128.5 million of the aggregate net proceeds from the IPO (including the over-allotment option). The Company contributed all of the net proceeds received by it to SES Holdings in exchange for SES Holdings LLC Units. SES Holdings used the net proceeds in the following manner: (i) $34.0 million was used to repay borrowings incurred under the Company’s Previous Credit Facility (as defined and discussed in Note 8) to fund the cash portion of the purchase price of the GRR Acquisition, as defined below, (ii) $7.8 million was used for the cash settlement of outstanding phantom unit awards and (iii) the remaining net proceeds were used for general corporate purposes, including funding capital expenditures.

Rockwater Merger: On November 1, 2017, we completed the Rockwater Merger, as contemplated by the Agreement and Plan of Merger, dated as of July 18, 2017 (the “Merger Agreement”), by and among us, SES Holdings, Raptor Merger Sub, Inc., a Delaware corporation and our wholly owned subsidiary, Raptor Merger Sub, LLC, a Delaware limited liability company and an indirect wholly owned subsidiary of SES Holdings, Rockwater and Rockwater LLC. Pursuant to the Merger Agreement, we combined with Rockwater in a stock‑for‑stock transaction in which we issued approximately 25.9 million shares of Class A Common Stock, 6.7 million shares of Select Inc. Class A-2 common stock, par value $0.01 (the “Class A‑2 Common Stock”) and 4.4 million shares of Class B Common Stock to the former holders of Rockwater common stock and a unit‑for‑unit transaction in which SES Holdings issued approximately 37.3 million common units of SES Holdings  (each, an “SES Holdings LLC Unit”) to the former holders of units in Rockwater LLC (each, a “Rockwater LLC Unit”). See Note 3 – Acquisitions for further discussion.

Credit Agreement:  Concurrent with the Rockwater Merger, the Company entered into a $300.0 million senior secured revolving credit facility (the “Credit Agreement”). In addition, the obligations under the Previous Credit Facility were repaid in full and the Previous Credit Facility was terminated. See Note 8—Debt for further discussion.

Exchange rights:  Under the Eighth Amended and Restated Limited Liability Company Agreement of SES Holdings (the “SES Holdings LLC Agreement”), Legacy Owner Holdco and its permitted transferees have the right (an “Exchange Right”) to cause SES Holdings to acquire all or a portion of its SES Holdings LLC Units for, at SES Holdings’ election, (i) shares of Class A Common Stock at an exchange ratio of one share of Class A Common Stock for each SES Holdings LLC Unit exchanged, subject to conversion rate adjustments for stock splits, stock dividends, reclassification and other similar transactions or (ii) cash in an amount equal to the Cash Election Value (as defined within the SES Holdings LLC Agreement) of such Class A Common Stock. Alternatively, upon the exercise of any Exchange Right, Select Inc. has the right (the “Call Right”) to acquire the tendered SES Holdings LLC Units from the exchanging unitholder for, at its election, (i) the number of shares of Class A Common Stock the exchanging unitholder would have received under the Exchange Right or (ii) cash in an amount equal to the Cash Election Value of such Class A Common Stock. In connection with any exchange of SES Holdings LLC Units pursuant to an Exchange Right or Call Right, the corresponding number of shares of Class B Common Stock will be cancelled.

On May 14, 2018, SES Holdings, pursuant to the limited liability company agreement of SES Holdings, exchanged 10,948,669 SES Holdings LLC Units (along with a corresponding number of shares of our Class B common stock) for an equivalent number of shares of our Class A common stock. 9,948,669 of such shares of Class A common stock were distributed to members of Legacy Owner Holdco, with the remaining shares distributed to WDC Aggregate LLC.

Registration rights:  In December 2016, in connection with the closing of the Select 144A Offering, Select Inc. entered into a registration rights agreement with FBR Capital Markets & Co. for the benefit of the investors in the Select 144A Offering. Under this registration rights agreement, the Company agreed, at its expense, to file with the U.S Securities and Exchange Commission (“SEC”), in no event later than April 30, 2017, a shelf registration statement registering for resale the 16,100,000 shares of Class A Common Stock issuable upon conversion of the Class A‑1 Common Stock sold in the Select 144A Offering plus any additional shares of Class A‑1 Common Stock issued in respect thereof whether by stock dividend, stock distribution, stock split or otherwise, and to use commercially reasonable efforts to cause such registration statement to be declared effective by the SEC as soon as practicable but in any event within 60 days after the closing of the IPO. The Company filed this registration statement with the SEC on April 28, 2017 and this registration statement was declared effective by the SEC on June 13, 2017. Accordingly, each share of Class A‑1 Common Stock outstanding automatically converted into a share of Class A Common Stock on a one‑for‑one basis at that time. In addition, Legacy Owner Holdco has the right, under certain circumstances, to cause the Company to register the shares of Class A Common Stock obtained pursuant to the Exchange Right. Legacy Owner Holdco exercised this right in May 2018, and the registration statement registering these shares was declared automatically effective by the SEC on May 16, 2018.

Rockwater Registration Rights Agreement: In connection with the closing of the Rockwater Merger, pursuant to that certain Assignment and Assumption Agreement (the “Assignment and Assumption Agreement”), dated as of November 1, 2017, by and between Rockwater and Select Inc., Rockwater assigned, and Select Inc. assumed, Rockwater’s rights and obligations under that certain Registration Rights Agreement made and entered into as of February 16, 2017, between Rockwater and FBR Capital Markets & Co. (as assumed by Select Inc. pursuant to the Assignment and Assumption Agreement, the “Rockwater Registration Rights Agreement”). Under the Rockwater Registration Rights Agreement, Select Inc. agreed, at its expense, to file with the SEC a shelf registration statement registering for resale shares of Class A Common Stock into which the outstanding shares of Class A-2 Common Stock were convertible, and to cause such registration statement to be declared effective by the SEC as soon as practicable but in any event within 180 days after the initial filing of such registration statement

On January 12, 2018, the Company, pursuant to the Rockwater Registration Rights Agreement, filed with the SEC a shelf registration statement registering for resale of 6,653,777 shares of Class A Common Stock into which certain of the outstanding shares of Class A-2 Common Stock registered under such registration statement were convertible. Pursuant to the Company’s Third Amended and Restated Certificate of Incorporation, upon the effectiveness of this registration statement on March 29, 2018, each outstanding share of Class A-2 Common Stock converted automatically into a share of Class A Common Stock on a one-for-one basis. No shares of Class A-2 Common Stock are currently outstanding.

Tax receivable agreements:  In connection with the Company’s restructuring at the Select 144A Offering, Select Inc. entered into two tax receivable agreements (the “Tax Receivable Agreements”) with Legacy Owner Holdco and certain other affiliates of the then-holders of SES Holdings LLC Units (each such person and any permitted transferee thereof, a “TRA Holder” and together, the “TRA Holders”). On July 18, 2017, the Company’s board of directors approved amendments to each of the Tax Receivable Agreements. See Note 12—Related Party Transactions for further discussion.

Basis of presentation:  The accompanying unaudited interim consolidated financial statements of the Company have been prepared in accordance with generally accepted accounting principles in the United States (“GAAP”) and pursuant to the rules and regulations of the SEC. These unaudited interim consolidated financial statements have been prepared in accordance with the instructions to Form 10-Q and, therefore, do not include all disclosures required for financial statements prepared in conformity with GAAP.

This Form 10-Q relates to the three and six months ended June 30, 2018 (the “Current Quarter” and the “Current Period”, respectively) and the three and six months ended June 30, 2017 (the “Prior Quarter” and the “Prior Period”, respectively). The Company’s annual report on Form 10-K for the year ended December 31, 2017 (the “2017 Form 10-K”) filed with the SEC on March 19, 2018, includes certain definitions and a summary of significant accounting policies and should be read in conjunction with this Form 10-Q. All material adjustments (consisting solely of normal recurring adjustments) which, in the opinion of management, are necessary for a fair statement of the results for the interim periods have been reflected. The results for the Current Quarter and the Current Period are not necessarily indicative of the results to be expected for the full year.

The unaudited interim consolidated financial statements include the accounts of the Company and all of its majority‑owned or controlled subsidiaries. All significant intercompany accounts and transactions have been eliminated in consolidation.

For investments in subsidiaries that are not wholly owned, but where the Company exercises control, the equity held by the minority owners and their portion of net income or loss are reflected as noncontrolling interests. Investments in entities in which the Company exercises significant influence over operating and financial policies are accounted for using the equity method, and investments in entities for which the Company does not have significant control or influence are accounted for using the cost method. As of June 30, 2018, the Company has no equity method investees and one cost method investee. The Company’s investments are reviewed for impairment whenever events or circumstances indicate that the carrying value may not be recoverable. When circumstances indicate that the fair value of its investment is less than its carrying value and the reduction in value is other than temporary, the reduction in value is recognized in earnings. During the Current Period, the Company determined that its cost method investee was no longer fully recoverable and was written down to its estimated fair value of $0.5 million. The impairment expense of $2.0 million is included in impairment of investment within the consolidated statements of operations.

Reclassifications:Certain reclassifications have been made to the Company’s prior period consolidated financial information in order to conform to the current period presentation. These presentation changes did not impact the Company’s consolidated net income, total assets, total liabilities or total stockholders’ equity.

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SIGNIFICANT ACCOUNTING POLICIES

6 Months Ended

Jun. 30, 2018

SIGNIFICANT ACCOUNTING POLICIES

SIGNIFICANT ACCOUNTING POLICIES

NOTE 2—SIGNIFICANT ACCOUNTING POLICIES

Significant accounting policies: The Company’s significant accounting policies are disclosed in Note 2 of the consolidated financial statements for the year ended December 31, 2017 included in the Company’s most recent Annual Report on Form 10-K. There have been no significant changes in such policies or the application of such policies during the Current Period.

Use of estimates:  The preparation of consolidated financial statements in conformity with 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.

On an ongoing basis, the Company evaluates its estimates, including those related to recoverability of long‑lived assets and intangibles, useful lives used in depreciation and amortization, uncollectible accounts receivable, income taxes, self‑insurance liabilities, share‑based compensation and contingent liabilities. The Company bases its estimates on historical and other pertinent information that are believed to be reasonable under the circumstances. The accounting estimates used in the preparation of the consolidated financial statements may change as new events occur, as more experience is acquired, as additional information is obtained and as the Company’s operating environment changes.

Asset retirement obligations:  The following table describes the changes to the Company’s asset retirement obligation (ARO) liability for the Current Period:

	For the six months ended June 30, 2018
	(in thousands)
Balance at beginning of Current Period	$	1,846
Accretion expense, included in depreciation and amortization expense		97
Change in estimate		386
Divestitures		(508)
Balance at end of Current Period	$	1,821

We review the adequacy of our asset retirement obligation liabilities whenever indicators suggest that the estimated cash flows underlying the liabilities have changed. The Company’s ARO liabilities are included in accrued expenses and other current liabilities and other long term liabilities in the accompanying consolidated balance sheets for the six months ended June 30, 2018 and year ended December 31, 2017.

Change in depreciable lives of property and equipment: In accordance with its policy, the Company reviews the estimated useful lives of its fixed assets on an ongoing basis. This most recent review, conducted in first quarter 2018, indicated that the economic lives of certain assets were longer than the historic asset lives previously used by the Company. As a result, effective January 1, 2018, the Company changed its estimates of the useful lives of certain assets included in vehicles and equipment and machinery and equipment to better reflect the estimated periods during which these assets will remain in service. The average estimated useful lives of the assets impacted in the vehicles and equipment category increased from 6.0 to 8.1 years while the average estimated useful lives of assets impacted in machinery and equipment increased from 5.5 years to 6.9 years. The change in the estimated useful lives of fixed assets was implemented on a prospective basis and does not require restatement of previously reported depreciation and amortization expense. For the Current Quarter the effect of this change in accounting estimate was to reduce depreciation and amortization expense by $4.8 million, increase net income by $4.6 million and increase basic and diluted earnings per share by $0.04 attributable to our stockholders. For the Current Period the effect of this change in accounting estimates was to reduce depreciation and amortization expense by $9.5 million, increase net income by $9.3 million and increase basic and diluted earnings per share by $0.09 attributable to our stockholders.

Emerging Growth Company status:  Under the Jumpstart Our Business Startups Act of 2012 (the “JOBS Act”), the Company is an “emerging growth company,” or an “EGC,” which allows the Company to have an extended transition period for complying with new or revised accounting standards pursuant to Section 107(b) of the JOBS Act. The Company intends to take advantage of all of the reduced reporting requirements and exemptions, including the longer phase‑in periods for the adoption of new or revised financial accounting standards under Section 107 of the JOBS Act until the Company is no longer an emerging growth company. The Company’s election to use the phase‑in periods permitted by this election may make it difficult to compare the Company’s financial statements to those of non‑emerging growth companies and other emerging growth companies that have opted out of the longer phase‑in periods under Section 107 of the JOBS Act and who will comply with new or revised financial accounting standards. 

The Company will lose its emerging growth company status as of December 31, 2018, as the market value of our common stock held by non-affiliates was greater than $700 million as of June 30, 2018.

Recent accounting pronouncements:  In May 2014, the Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update (“ASU”) 2014-09, Revenue from Contracts with Customers, which supersedes the revenue recognition requirements in Revenue Recognition (Topic 605), and requires entities to recognize revenue in a way that depicts the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled to in exchange for those goods or services. In August 2015, the FASB deferred the effective date by one year to annual reporting periods beginning after December 15, 2017, including interim reporting periods within that reporting period. As the Company will lose its EGC status on December 31, 2018, the ASU will become effective for calendar year 2018 at that time. The Company does not expect the adoption of the ASU or related ASU’s 2016-08, 2016-10, 2016-12 and 2016-20, will have a material impact on its consolidated financial statements and is evaluating the impact on the related disclosures and internal controls over financial reporting. The Company will use the modified retrospective method upon adoption of the ASU.

In February 2016, the FASB issued ASU 2016-02, Leases, which modifies the lease recognition requirements and requires entities to recognize the assets and liabilities arising from leases on the balance sheet and to disclose key qualitative and quantitative information about the entity’s leasing arrangements. Based on the original guidance in ASU 2016-02, lessees and lessors would have been required to recognize and measure leases at the beginning of the earliest period presented using a modified retrospective approach, including a number of optional practical expedients. In July 2018, the FASB issued ASU No. 2018-11, Leases (ASC 842): Targeted Improvements, which provides entities with an option to apply the guidance prospectively, instead of retrospectively, and allows for other classification provisions. ASU 2016-02 is effective for annual reporting periods beginning after December 15, 2018, including interim periods within those fiscal years, with early adoption permitted. As the Company will lose its EGC status on December 31, 2018, the ASU will become effective January 1, 2019. The Company currently anticipates that it will elect to recognize its lease assets and liabilities on a prospective basis, beginning on January 1, 2019, using an optional transition method. The adoption of these ASU’s will have an impact on how the Company’s consolidated balance sheets, statements of operations, cash flows, and disclosures contained in its notes to consolidated financial statements will be presented; however, because the Company is currently evaluating the impact of these ASU’s and, ASU 2018-01, Land Easements, it is unable to quantify the overall impact at this time.

In March 2016, the FASB issued ASU 2016-09, Improvements to Employee Share-Based Payment Accounting, which is intended to simplify several aspects of the accounting for share‑based payment award transactions. ASU 2016-09 was effective for annual reporting periods beginning after December 15, 2016, and interim periods within those annual periods. As an EGC utilizing the extended transition period for new accounting pronouncements, this pronouncement was effective for annual reporting periods beginning after December 15, 2017, and interim periods within fiscal years beginning after December 15, 2018. As the Company will lose its EGC status on December 31, 2018, the ASU will become effective for calendar year 2018 at that time. Certain amendments in this update should be applied prospectively, while other amendments in the update should be applied retrospectively, with early adoption permitted in any interim or annual period. The Company is currently evaluating the impact that the new accounting guidance will have on its consolidated financial statements and related disclosures.

In August 2016, the FASB issued ASU 2016-15, Classification of Certain Cash Receipts and Cash Payments, which amends eight specific cash flow issues with the objective of reducing diversity in practice. ASU 2016-15 was effective for annual reporting periods beginning after December 15, 2017, and interim periods within those fiscal years. As an EGC utilizing the extended transition period for new accounting pronouncements, this pronouncement is effective for annual reporting periods beginning after December 15, 2018, and interim periods within fiscal years beginning after December 15, 2019. As the Company will lose its EGC status on December 31, 2018, the ASU will become effective for calendar year 2018 at that time. The amendments in this ASU should be applied using a retrospective approach. The Company is currently evaluating the impact that the new accounting guidance will have on its consolidated financial statements and related disclosures.

In January 2017, the FASB issued ASU 2017-01, Clarifying the Definition of a Business, with the objective of adding guidance to assist entities with evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. This update was effective for fiscal years and interim periods within fiscal years beginning after December 15, 2017. As an EGC utilizing the extended transition period for new accounting pronouncements, this pronouncement is effective for annual reporting periods beginning after December 15, 2018, and interim periods within fiscal years beginning after December 15, 2019. As the Company will lose its EGC status on December 31, 2018, the ASU will become effective for calendar year 2018 at that time. The amendments in this ASU should be applied prospectively. The Company does not expect the adoption of the ASU will have a material impact on its consolidated financial statements and related disclosures.

In January 2017, the FASB issued ASU 2017-04, Simplifying the Test for Goodwill Impairment. This pronouncement removes Step 2 of the goodwill impairment test, which requires a hypothetical purchase price allocation. A goodwill impairment will now be the amount by which a reporting unit’s carrying value exceeds its fair value, not to exceed the carrying amount of goodwill. This update is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2019. The amendments in this ASU should be applied prospectively. The Company is currently evaluating the impact that the new accounting guidance will have on its consolidated financial statements and related disclosures.

In May 2017, the FASB issued ASU 2017-09, Scope of Modification Accounting. This pronouncement provides guidance about which changes to the terms and conditions of a share-based payment award require an entity to apply modification accounting in ASC 718. The pronouncement should be applied prospectively to an award modified on or after the adoption date. The Company adopted this ASU in 2018, and the adoption of this guidance did not materially affect its consolidated financial statements and related disclosures.

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ACQUISITIONS

6 Months Ended

Jun. 30, 2018

ACQUISITIONS

ACQUISITIONS

NOTE 3— ACQUISITIONS

Business combinations

Rockwater Merger 

On November 1, 2017, the Company completed the Rockwater Merger in which the Company combined with Rockwater. Total consideration was $620.2 million based on the closing price of the Company’s shares of Class A Common Stock on November 1, 2017. Consideration transferred consisted of shares of Class A Common Stock, shares of Class A-2 Common Stock, shares of Class B Common Stock, and SES Holdings LLC Units. Consideration transferred also included the Company’s previously held interest in Rockwater, which was acquired as consideration in a sale of assets by Select’s predecessor to Rockwater’s predecessor in 2008 prior to the contribution of those assets to Rockwater and the related conversion of the ownership interests received by Select’s predecessor to ownership interests in Rockwater in 2011, and the fair value of Rockwater’s replaced share-based payments attributed to pre-acquisition service. In addition, the Company’s previously held interest in Rockwater was cancelled pursuant to the Merger Agreement. The previously held interest in Rockwater was previously included in other assets in the consolidated balance sheet. It was remeasured to a fair value of $2.3 million, which resulted in a gain of $1.2 million recognized in the fourth quarter of 2017 in other income in the consolidated statements of operations. For the Current Quarter and the Current Period, the Company expensed $1.7 million and $3.7 million of transaction-related costs, respectively, which are included in selling, general and administrative expenses within the consolidated statements of operations.

The Rockwater Merger was accounted for as a business combination under the acquisition method of accounting. Assets acquired and liabilities assumed in the Rockwater Merger were recorded at their estimated fair values as of the merger date. The Company has not finalized these estimates; therefore, the fair value estimates set forth below are subject to adjustment during a one-year measurement period following the merger date. The final allocation of purchase consideration could include changes in the estimated fair value of working capital, property and equipment, intangible assets, other long-term assets, deferred tax liabilities and other long-term liabilities. Adjustments in the purchase price allocation may require a change in the amount allocated to goodwill during the period in which the adjustments are determined.

When determining the fair values of assets acquired and liabilities assumed, management made significant estimates, judgments and assumptions. The Company also engaged third-party valuation experts to assist in the purchase price allocation and the recorded valuation of property and equipment. The Company has received reports from these experts including estimates, judgments and assumptions for the valuation of the tangible and intangible assets acquired and liabilities assumed. These reports along with the analysis and expertise of management have formed the basis for the preliminary allocation. Detailed analysis and review of the assets acquired, including confirmation of the condition, existence and utility of the assets is currently ongoing. Management believes that the current information provides a reasonable basis for estimating fair values of assets acquired and liabilities assumed. These estimates, judgments and assumptions are subject to change and should be treated as preliminary as purchase accounting is subject to a twelve month measurement period adjustment to reflect any new information about the facts and circumstances that existed as of the acquisition date, if such facts and circumstances would have affected the measurement of the amounts recognized as of the acquisition date. Included in the working capital figure in the table below is accounts receivable acquired with a fair value of $196.9 million, and a gross contractual amount of $199.1 million. The Company expects $2.2 million of the gross contractual amount to be uncollectible. Management estimated that total consideration paid exceeded the fair value of the net assets acquired and liabilities assumed by $252.2 million, which excess was recognized as goodwill. The goodwill recognized was primarily attributable to synergies driven by expanding into new geographies and service offerings, strengthening existing service lines, acquiring an established, trained workforce and expected cost reductions. Goodwill of $235.9 million and $16.3 million was allocated to the Company’s Water Solutions and Oilfield Chemicals segments, respectively.

The following table summarizes the consideration transferred and the estimated fair value of identified assets acquired and liabilities assumed at the date of acquisition:  

Preliminary purchase price allocation	Amount
Consideration  transferred	(in thousands)
Class A Common Stock (25,914,260 shares)	$	423,957
Class A-2 Common Stock (6,731,845 shares)		110,133
Class B Common Stock (4,356,477 shares) and SES Holdings common units issued (4,356,477 units)		71,272
Fair value of previously held interest in Rockwater		2,310
Fair value of Rockwater share-based awards attributed to pre-acquisition service		12,529
Total consideration transferred		620,201
Less: identifiable assets acquired and liabilities assumed
Working capital(1)		143,571
Property and equipment(2)		183,975
Intangible assets
Customer relationships		89,007
Trademarks and patents		31,215
Non-compete agreements		3,810
Other long-term assets		62
Deferred tax liabilities		(408)
Long-term debt		(80,555)
Other long-term liabilities		(2,650)
Total identifiable net assets acquired		368,027
Goodwill		252,174
Fair value allocated to net assets acquired	$	620,201

(1) During the Current Period, the Company obtained additional information related to working capital which led to a decrease of $3.3 million and a corresponding increase in goodwill of $3.3 million compared to the estimated fair values included in the 2017 Form 10-K.

(2) During the Current Period, the Company obtained additional information related to property and equipment which led to a decrease of $1.6 million and a corresponding increase in goodwill of $1.6 million compared to the estimated fair values included in the 2017 Form 10-K.

Resource Water Acquisition

On September 15, 2017, the Company completed its acquisition (the “Resource Water Acquisition”) of Resource Water Transfer Services, L.P. and certain other affiliated assets (collectively, “Resource Water”). Resource Water provides water transfer services to exploration and production (“E&P”) operators in West Texas and East Texas. Resource Water’s assets include 24 miles of layflat hose as well as numerous pumps and ancillary equipment required to support water transfer operations. Resource Water has longstanding customer relationships across its operating regions which are viewed as strategic to the Company’s water solutions business. 

The total consideration for the Resource Water Acquisition was $9.0 million, with $6.6 million paid in cash and $2.4 million paid in shares of Class A Common Stock valued at $15.17 per share, subject to customary post‑closing adjustments. The Company funded the cash portion of the consideration for the Resource Water Acquisition with $6.6 million of cash on hand. The Resource Water Acquisition was accounted for as a business combination under the acquisition method of accounting. The allocation of the consideration transferred was based on management’s estimates, judgments and assumptions. When determining the fair values of assets acquired and liabilities assumed, management made significant estimates, judgments and assumptions. These estimates, judgments and assumptions are subject to change upon final valuation and should be treated as preliminary values. Working capital estimates are based on provisional amounts. Management estimated that total consideration paid exceeded the fair value of the net assets acquired by $1.9 million, which excess was recognized as goodwill. The goodwill recognized was attributable to Resource Water’s assembled workforce as well as synergies related to the Company’s comprehensive water solutions strategy. The goodwill was included in the assets of the Company’s Water Solutions segment. The following table summarizes the consideration transferred and the estimated fair value of identified assets acquired and liabilities assumed at the date of acquisition:

Purchase price allocation	Amount
Consideration  transferred	(in thousands)
Cash paid	$	6,586
Class A Common Stock (156,909 shares)		2,380
Total consideration transferred		8,966
Less: identifiable assets acquired and liabilities assumed
Working capital		1,189
Fixed assets		3,485
Customer relationship intangible assets		1,933
Other intangible assets		465
Total identifiable net assets acquired		7,072
Goodwill		1,894
Fair value allocated to net assets acquired	$	8,966

GRR Acquisition

On March 10, 2017, the Company completed its acquisition (the “GRR Acquisition”) of Gregory Rockhouse Ranch, Inc. and certain other affiliated entities and assets (collectively, the “GRR Entities”). The GRR Entities provide water and water‑related services to E&P companies in the Permian Basin and own and have rights to a vast array of fresh, brackish and effluent water sources with access to significant volumes of water annually and water transport infrastructure, including over 1,200 miles of temporary and permanent pipeline infrastructure and related storage facilities and pumps, all located in the northern Delaware Basin portion of the Permian Basin.

The total consideration for the GRR Acquisition was $59.6 million, subject to customary post-closing adjustments, with $53.0 million paid in cash, $1.1 million in assumed tax liabilities and $5.5 million paid to the sellers in shares of Class A Common Stock valued at $20.00 per share. The Company funded the cash portion of the consideration for the GRR Acquisition with $19.0 million of cash on hand and $34.0 million of borrowings under the Company’s Previous Credit Facility. For the six months ended June 30, 2017, the Company expensed $1.0 million of transaction-related costs, which are included in selling, general and administrative expenses within the consolidated statements of operations. The GRR Acquisition was accounted for as a business combination under the acquisition method of accounting. When determining the fair values of assets acquired and liabilities assumed, management made significant estimates, judgments and assumptions. Management estimated that consideration paid exceeded the fair value of the net assets acquired. Therefore, goodwill of $12.0 million was recorded. The goodwill recognized was primarily attributable to synergies related to the Company’s comprehensive water solutions strategy that are expected to arise from the GRR Acquisition and was attributable to the Company’s Water Solutions segment. The assets acquired and liabilities assumed and the results of operations of the acquired business are included in the Company’s Water Solutions segment. The following table summarizes the consideration transferred and the estimated fair value of identified assets acquired and liabilities assumed at the date of acquisition:

Purchase price allocation	Amount
Consideration  transferred	(in thousands)
Cash paid	$	53,032
Class A Common Stock (274,998 shares)		5,500
Assumed liabilities		1,106
Total consideration transferred		59,638
Less: identifiable assets acquired and liabilities assumed
Working capital		7,728
Fixed assets		13,225
Customer relationship intangible assets		21,484
Other intangible assets		5,152
Total identifiable net assets acquired		47,589
Goodwill		12,049
Fair value allocated to net assets acquired	$	59,638

The GRR Acquisition contributed revenue and net income of $11.1 million and $1.7 million, respectively, to the consolidated results of the Company for the period from March 10, 2017, the date of completion of the GRR Acquisition, to June 30, 2017.

The following unaudited consolidated pro forma information is presented as if the Rockwater Merger, the Resource Water Acquisition and the GRR acquisition had occurred on January 1, 2017:

	Pro Forma
	Three months ended June 30,		Six months ended June 30,
	2017		2017
	(unaudited)
	(in thousands)
Revenue	$	303,047	$	532,282
Net loss	$	(9,393)	$	(33,537)
Less: net loss attributable to noncontrolling interests(1)		3,780		13,564
Net loss attributable to Select Energy Services, Inc.(1)	$	(5,613)	$	(19,973)

(1) The allocation of net loss attributable to noncontrolling interests and Select Inc. gives effect to the equity structure as of June 30, 2017 as though the Select 144A Offering, the IPO, the Rockwater Merger, the Resource Water Acquisition and the GRR Acquisition occurred as of January 1, 2017. However, the calculation of pro forma net loss does not give effect to any other pro forma adjustments for the Select 144A Offering or the subsequent IPO.

The unaudited pro forma amounts above have been calculated after applying the Company’s accounting policies and adjusting the Rockwater Merger, Resource Water Acquisition and GRR Acquisition results to reflect the increase to depreciation and amortization that would have been charged assuming the fair value adjustments to property, plant and equipment and intangible assets had been applied from January 1, 2017 and other related pro forma adjustments.

The pro forma amounts do not include any potential synergies, cost savings or other expected benefits of the Rockwater Merger, the Resource Water Acquisition or the GRR Acquisition, and are presented for illustrative purposes only and are not necessarily indicative of results that would have been achieved if the Rockwater Merger, the Resource Water Acquisition and the GRR Acquisition had occurred as of January 1, 2017 or of future operating performance. 

Asset acquisitions

On May 30, 2017 the Company completed the acquisition of automated manifold intellectual property and related assets from Data Automated Water Systems, LLC (the “DAWS Acquisition”) for $4.0 million.  This acquisition was paid with $2.0 million of cash and 128,370 shares of Class A Common Stock valued at $2.0 million. The DAWS Acquisition resulted in fixed assets of $1.8 million, patents of $1.9 million and software of $0.3 million.

On June 21, 2017 the Company completed the acquisition of fixed assets from Tex-Star Water Services, LLC (the “TEX Acquisition”) for $4.2 million in cash.

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EXIT AND DISPOSAL ACTIVITIES

6 Months Ended

Jun. 30, 2018

EXIT AND DISPOSAL ACTIVITIES

EXIT AND DISPOSAL ACTIVITIES

NOTE 4—EXIT AND DISPOSAL ACTIVITIES

Due to a reduction in industry activity that began in 2014, the Company made the decision during the year ended December 31, 2016 to close 15 facilities and consolidate operations for the purpose of improving operating efficiencies. In addition, the Company has decided to consolidate or close additional facilities in relation to its Rockwater Merger.  During the Current Period, the Company recorded $3.1 million of charges related to exit and disposal activities. During the Prior Period, the Company recorded $2.3 million of charges related to exit and disposal activities and reclassified $0.2 million of deferred rent related to accrued lease obligations related to exited facilities. The Company had a remaining balance of $22.0 million, inclusive of a short‑term balance of $2.8 million in accrued expenses and other current liabilities, as of June 30, 2018 related to accrued lease obligations and terminations at exited facilities within its Water Solutions segment. As of June 30, 2018, the Company has completed its exit from underperforming facilities but will continue to make non‑cancelable lease payments for related facilities through the year ended 2027. The Company’s abandonment of these facilities is not a part of a formalized exit plan. The changes in the abandoned lease obligations for the Current Period and Prior Period are as follows:

			Provision during  the		Usage during the
	Balance as of		six months ended		six months ended		Balance as of
	December 31, 2017		June 30, 2018		June 30, 2018		June 30, 2018
	(in thousands)
Lease obligations and terminations	$	21,350	$	2,807	$	3,465	$	20,692
Reclassification of deferred rent		1,254						1,332
Total	$	22,604					$	22,024

			Provision during  the		Usage during the
	Balance as of		six months ended		six months ended		Balance as of
	December 31, 2016		June 30, 2017		June 30, 2017		June 30, 2017
	(in thousands)
Lease obligations and terminations	$	18,000	$	2,281	$	1,384	$	18,897
Reclassification of deferred rent		1,069						1,254
Total	$	19,069					$	20,151

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INVENTORIES

6 Months Ended

Jun. 30, 2018

INVENTORIES

INVENTORIES

NOTE 5—INVENTORIES

Inventories, which are comprised of chemicals and materials available for resale and parts and consumables used in operations, are valued at the lower of cost and net realizable value, with cost determined under the weighted-average method. The significant components of inventory are as follows:

	June 30, 2018		December 31, 2017
	(in thousands)
Raw materials	$	16,161	$	11,462
Finished goods		32,961		29,674
Materials and supplies		2,952		3,462
		52,074		44,598
Inventory reserve		(394)		—
	$	51,680	$	44,598

During the Current Quarter and the Current Period, the Company recorded charges to the reserve for excess and obsolete inventory in the amount of $0.1 million and $0.4 million, respectively, which were recognized within costs of revenue on the accompanying consolidated statements of operations. No charges were recorded during the Prior Quarter or Prior Period. The reserve for excess and obsolete inventories is determined based on the Company’s historical usage of inventory on hand, as well as future expectations, and the amount necessary to reduce the cost of the inventory to its estimated net realizable value.

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PROPERTY AND EQUIPMENT

6 Months Ended

Jun. 30, 2018

PROPERTY AND EQUIPMENT

PROPERTY AND EQUIPMENT

NOTE 6—PROPERTY AND EQUIPMENT

Property and equipment consists of the following as of June 30, 2018 and December 31, 2017:

	June 30, 2018		December 31, 2017
	(in thousands)
Land	$	14,402	$	15,286
Buildings and leasehold improvements		98,376		99,222
Vehicles and equipment		72,529		70,537
Vehicles and equipment - capital lease		2,628		2,810
Machinery and equipment		715,302		716,420
Machinery and equipment - capital lease		545		544
Computer equipment and software		13,082		12,466
Computer equipment and software - capital lease		356		356
Office furniture and equipment		4,320		4,320
Disposal wells		63,294		67,805
Other		497		497
Construction in progress		78,516		44,732
		1,063,847		1,034,995
Less accumulated depreciation and impairment		(580,102)		(560,886)
Total property and equipment, net	$	483,745	$	474,109

Long‑lived assets are evaluated for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. During the Current Quarter, the Company reviewed certain fluid disposal machinery and equipment used in our fluid hauling and disposal services that are included in our Water Solutions segment. Due to the condition of the equipment, the Company determined that long-lived assets with a carrying value of $2.3 million were no longer recoverable and were written down to their estimated fair value of zero.

During the Current Quarter, Prior Quarter, Current Period and Prior Period, depreciation expense was $27.9 million, $20.3 million, $55.4 million and $39.9 million, respectively.

As a result of the Rockwater Merger, the Company acquired various capital leases for certain vehicles, machinery and equipment that expire at various dates during the next five years. Depreciation of assets held under capital leases for the Current Quarter and the Current Period was $0.3 million and $0.7 million, respectively, and is included in depreciation and amortization expense in the accompanying consolidated statements of operations. The Company had no capital lease obligations as of June 30, 2017.

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GOODWILL AND OTHER INTANGIBLE ASSETS

6 Months Ended

Jun. 30, 2018

GOODWILL AND OTHER INTANGIBLE ASSETS.

GOODWILL AND OTHER INTANGIBLE ASSETS

NOTE 7—GOODWILL AND OTHER INTANGIBLE ASSETS

Goodwill is evaluated for impairment on at least an annual basis, or more frequently if indicators of impairment exist. The annual impairment tests are based on Level 3 inputs. The changes in the carrying amounts of goodwill by reportable segment as of June 30, 2018 and December 31, 2017 are as follows:

	Water		Oilfield		Wellsite
	Solutions		Chemicals		Services		Total
	(in thousands)
Balance as of December 31, 2016	$	—	$	—	$	12,242	$	12,242
Additions		245,542		15,637		—		261,179
Balance as of December 31, 2017		245,542		15,637		12,242		273,421
Measurement period adjustment(1)		4,282		656		—		4,938
Balance as of June 30, 2018	$	249,824	$	16,293	$	12,242	$	278,359

(1) See Note 3―Acquisitions for additional information.

The components of other intangible assets as of June 30, 2018 and December 31, 2017 are as follows:

	As of June 30, 2018						As of December 31, 2017
	Gross		Accumulated		Net		Gross		Accumulated		Net
	Value		Amortization		Value		Value		Amortization		Value
	(in thousands)						(in thousands)
Customer relationships	$	169,250	$	63,569	$	105,681	$	169,250	$	57,836	$	111,414
Patents and trademarks		33,544		915		32,629		33,544		414		33,130
Other		14,704		4,106		10,598		14,704		3,182		11,522
Total other intangible assets	$	217,498	$	68,590	$	148,908	$	217,498	$	61,432	$	156,066

The Company had $5.3 million in indefinite-lived water rights as of both June 30, 2018 and December 31, 2017 and are included within the other component in the tables above. The Company had $23.4 million in indefinite-lived trademarks as of both June 30, 2018 and December 31, 2017 and are included in the patents and trademarks component in the table above.

Amortization expense was $3.3 million, $2.6 million, $7.2 million and $4.8 million for the Current Quarter, Prior Quarter, Current Period and Prior Period, respectively. Annual amortization of intangible assets for the next five years and beyond is as follows:

	Amount
	(in thousands)
Remainder of 2018	$	5,846
2019		11,595
2020		11,301
2021		10,118
2022		9,904
Thereafter		71,428

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DEBT

6 Months Ended

Jun. 30, 2018

DEBT

DEBT

NOTE 8—DEBT

Credit facility and revolving line of credit

Our subsidiary, Select Energy Services, LLC’s (“Select LLC”) previous credit facility (the “Previous Credit Facility”), was amended on December 20, 2016 to extend the maturity date from February 28, 2018 to February 28, 2020 and reduce the revolving line of credit to $100.0 million. On November 1, 2017, in connection with the Closing (defined below), SES Holdings entered into the Credit Agreement, the obligations of SES Holdings and Select LLC under the Previous Credit Facility were repaid in full and the Previous Credit Facility was terminated.

On November 1, 2017, in connection with the closing of the Rockwater Merger (the “Closing”), SES Holdings and Select LLC entered into a $300.0 million senior secured revolving credit facility (the “Credit Agreement”), by and among SES Holdings, as parent, Select LLC, as Borrower and certain of SES Holdings’ subsidiaries, as guarantors, each of the lenders party thereto and Wells Fargo Bank, N.A., as administrative agent, issuing lender and swingline lender (the “Administrative Agent”). The Credit Agreement also has a sublimit of $40.0 million for letters of credit and a sublimit of $30.0 million for swingline loans. Subject to obtaining commitments from existing or new lenders, the Company has the option to increase the maximum amount under the Credit Agreement by $150.0 million during the first three years following the closing. The maturity date of the Credit Agreement is the earlier of (a) November 1, 2022, and (b) the earlier termination in whole of the Commitments pursuant to Section 2.1(b) of Article VII of the Credit Agreement.

The Credit Agreement permits extensions of credit up to the lesser of $300.0 million and a borrowing base that is determined by calculating the amount equal to the sum of (i) 85% of the Eligible Billed Receivables (as defined in the Credit Agreement), plus (ii) 75% of Eligible Unbilled Receivables (as defined in the Credit Agreement), provided that this amount will not equal more than 35% of the borrowing base, plus (iii) the lesser of (A) the product of 70% multiplied by the value of Eligible Inventory (as defined in the Credit Agreement) at such time and (B) the product of 85% multiplied by the Net Recovery Percentage (as defined in the Credit Agreement) identified in the most recent Acceptable Appraisal of Inventory (as defined in the Credit Agreement), multiplied by the value of Eligible Inventory at such time, provided that this amount will not equal more than 30% of the borrowing base, minus (iv) the aggregate amount of Reserves (as defined in the Credit Agreement), if any, established by the Administrative Agent from time to time, including, if any, the amount of the Dilution Reserve (as defined in the Credit Agreement). The borrowing base is calculated on a monthly basis pursuant to a borrowing base certificate delivered by Select LLC to the Administrative Agent.

Borrowings under the Credit Agreement bear interest, at Select LLC’s election, at either the (a) one-, two-, three- or six-month LIBOR (“Eurocurrency Rate”) or (b) the greatest of (i) the federal funds rate plus 0.5%, (ii) the one-month Eurocurrency Rate plus 1% and (iii) the Administrative Agent’s prime rate (the ”Base Rate”), in each case plus an applicable margin. Interest is payable monthly in arrears. The applicable margin for Eurocurrency Rate loans ranges from 1.50% to 2.00% and the applicable margin for Base Rate loans ranges from 0.50% to 1.00%, in each case, depending on Select LLC’s average excess availability under the Credit Agreement. During the continuance of a bankruptcy event of default, automatically and during the continuance of any other default, upon the Administrative Agent’s or the required lenders’ election, all outstanding amounts under the Credit Agreement will bear interest at 2.00% plus the otherwise applicable interest rate.

Level	Average Excess Availability	Base Rate Margin	Eurocurrency Rate Margin
I	< 33% of the commitments	1.00%	2.00%
II	< 66.67% of the commitments and ≥ 33.33% of the commitments	0.75%	1.75%
III	≥ 66.67% of the commitments	0.50%	1.50%

Level	Average Revolver Usage	Unused Line Fee Percentage
I	≥ 50% of the commitments	0.250%
II	< 50% of the commitments	0.375%

The obligations under the Credit Agreement are guaranteed by SES Holdings and certain subsidiaries of SES Holdings and Select LLC and secured by a security interest in substantially all of the personal property assets of SES Holdings, Select LLC and their domestic subsidiaries.

The Credit Agreement contains certain customary representations and warranties, affirmative and negative covenants and events of default. If an event of default occurs and is continuing, the lenders may declare all amounts outstanding under the Credit Agreement to be immediately due and payable.

In addition, the Credit Agreement restricts SES Holdings’ and Select LLC’s ability to make distributions on, or redeem or repurchase, its equity interests, except for certain distributions, including distributions of cash so long as, both at the time of the distribution and after giving effect to the distribution, no default exists under the Credit Agreement and either (a) excess availability at all times during the preceding 30 consecutive days, on a pro forma basis and after giving effect to such distribution, is not less than the greater of (1) 25% of the lesser of (A) the maximum revolver amount and (B) the then-effective borrowing base and (2) $37.5 million or (b) if SES Holdings’ fixed charge coverage ratio is at least 1.0 to 1.0 on a pro forma basis, and excess availability at all times during the preceding 30 consecutive days, on a pro forma basis and after giving effect to such distribution, is not less than the greater of (1) 20% of the lesser of (A) the maximum revolver amount and (B) the then-effective borrowing base and (2) $30.0 million. Additionally, the Credit Agreement generally permits Select LLC to make distributions to allow Select Inc. to make payments required under the existing Tax Receivable Agreements.

The Credit Agreement also requires SES Holdings to maintain a fixed charge coverage ratio of at least 1.0 to 1.0 at any time availability under the Credit Agreement is less than the greater of (i) 10% of the lesser of (A) the maximum revolver amount and (B) the then-effective borrowing base and (ii) $15.0 million and continuing through and including the first day after such time that availability under the Credit Agreement has equaled or exceeded the greater of (i) 10% of the lesser of (A) the maximum revolver amount and (B) the then-effective borrowing base and (ii) $15.0 million for 60 consecutive calendar days.

Certain lenders party to the Credit Agreement and their respective affiliates have from time to time performed, and may in the future perform, various financial advisory, commercial banking and investment banking services for the Company and its affiliates in the ordinary course of business for which they have received and would receive customary compensation. In addition, in the ordinary course of their various business activities, such parties and their respective affiliates may make or hold a broad array of investments and actively trade debt and equity securities (or related derivative securities) and financial instruments (including bank loans) for their own account and for the accounts of their customers, and such investments and securities activities may involve the Company’s securities and/or instruments.

In addition, certain lenders party to the Previous Credit Facility are lenders under the Credit Agreement.

The Company had $80.0 million and $75.0 million outstanding under the Credit Agreement as of June 30, 2018 and December 31, 2017, respectively. The weighted‑average interest rate of outstanding borrowings under the Credit Agreement was 3.966% and 3.319% as of June 30, 2018 and December 31, 2017, respectively. As of June 30, 2018 and December 31, 2017, the borrowing base under the Credit Agreement was $286.9 million and $262.1 million, respectively. The borrowing capacity under the Credit Agreement was reduced by outstanding letters of credit of $18.3 million and $19.8 million as of June 30, 2018 and December 31, 2017, respectively. The Company’s letters of credit have a variable interest rate between 1.50% and 2.00% based on the Company’s average excess availability as outlined above. The unused portion of the available borrowings under the Credit Agreement was $188.6 million at June 30, 2018.

Debt issuance costs are amortized to interest expense over the life of the debt to which they pertain. Total unamortized debt issuance costs as of June 30, 2018 and December 31, 2017 were $3.0 million and $3.3 million, respectively. As these debt issuance costs relate to a revolving line of credit, they are presented as a deferred charge within other assets on the consolidated balance sheet. Amortization expense related to debt issuance costs were $0.2 million, $0.3 million, $0.3 million and $0.6 million for the Current Quarter, Prior Quarter, Current Period and Prior Period, respectively.

The Company was in compliance with all debt covenants as of June 30, 2018.

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COMMITMENTS AND CONTINGENCIES

6 Months Ended

Jun. 30, 2018

COMMITMENTS AND CONTINGENCIES.

COMMITMENTS AND CONTINGENCIES

NOTE 9—COMMITMENTS AND CONTINGENCIES

Litigation

The Company is subject to a number of lawsuits and claims arising out of the conduct of its business. The ability to predict the ultimate outcome of such matters involves judgments, estimates and inherent uncertainties. Based on a consideration of all relevant facts and circumstances, including applicable insurance coverage, it is not expected that the ultimate outcome of any currently pending lawsuits or claims against the Company will have a material adverse effect on its consolidated financial position, results of operations or cash flows; however, there can be no assurance as to the ultimate outcome of these matters.

Certain subsidiaries acquired in the Rockwater Merger are under investigation by the U.S. Attorney's Office for the Middle District of Pennsylvania and the U.S. Environmental Protection Agency (“U.S. EPA”). It is alleged that certain employees at some of the facilities altered emissions controls systems on 4% of the vehicles in the fleet in violation of the Clean Air Act. The Company is cooperating with the relevant authorities to resolve the matter. At this time no administrative, civil or criminal charges have been brought against the Company and the Company cannot estimate the possible fines and penalties that may be levied against the Company.

Self-Insured Reserves

We are self-insured up to certain retention limits with respect to workers’ compensation, general liability and vehicle liability matters. We maintain accruals for self-insurance retentions that we estimate using third-party data and claims history.

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EQUITY-BASED COMPENSATION

6 Months Ended

Jun. 30, 2018

EQUITY-BASED COMPENSATION

EQUITY‑BASED COMPENSATION

NOTE 10—EQUITY‑BASED COMPENSATION

The SES Holdings 2011 Equity Incentive Plan, (“2011 Plan”) was approved by the board of managers of SES Holdings in April 2011. In conjunction with the Select 144A Offering, the Company adopted the Select Energy Services, Inc. 2016 Equity Incentive Plan (as amended from time to time, the “2016 Plan”) for employees, consultants and directors of the Company and its affiliates. Options that were outstanding under the 2011 Plan immediately prior to the Select 144A Offering were cancelled in exchange for new options granted under the 2016 Plan.

On July 18, 2017, the Select Inc. board of directors approved the First Amendment to the 2016 Plan (the “Equity Plan Amendment”), which clarifies the treatment of substitute awards under the 2016 Plan (including substitute awards that may be granted in connection with the Rockwater Merger) and allows for the assumption by the Company of shares eligible under any pre-existing stockholder-approved plan of an entity acquired by the Company or its affiliate (including the Rockwater Energy Solutions Inc. Amended and Restated 2017 Long Term Incentive Plan (the “Rockwater Equity Plan”)), in each case subject to the listing rules of the stock exchange on which Class A Common Stock is listed. The effectiveness of the Equity Plan Amendment was subject to approval by the Company's stockholders and the consummation of the transactions contemplated by the Merger Agreement for the Rockwater Merger. The Company’s consenting stockholders, who hold a majority of the outstanding common stock of the Company, approved the Equity Plan Amendment on July 18, 2017. The Equity Plan Amendment became effective on November 1, 2017 upon the consummation of the Rockwater Merger.

The maximum number of shares initially reserved for issuance under the 2016 Plan was 5,400,400 shares of Class A Common Stock, subject to adjustment in the event of recapitalization or reorganization, or related to forfeitures or the expiration of awards. Stock options are granted with terms not to exceed ten years. After giving effect to the Equity Plan Amendment, the maximum number of shares of Class A Common Stock reserved for issuance under the 2016 Plan is equal to (i) 5,400,400 shares plus (ii) 1,011,087 shares that became available on account of the assumption of the Rockwater Equity Plan, subject to adjustment in the event of recapitalization or reorganization, or related to forfeitures or the expiration of awards. The maximum number of shares described in the preceding sentence does not include 2,879,112 shares of Class A Common Stock related to substitute awards that were granted under the 2016 Plan following the conversion of outstanding equity awards originally granted under the Rockwater Equity Plan in accordance with the Merger Agreement.

Stock option awards

Stock options were granted with an exercise price equal to or greater than the fair market value of a share of Class A Common Stock as of the date of grant. The Company historically valued Class A Common Stock on a quarterly basis using a market approach that includes a comparison to publicly traded peer companies using earnings multiples based on their market values and a discount for lack of marketability. The fair value measurement relies on Level 3 inputs. The estimated fair value of its stock options is expensed over their vesting period, which is generally three years from the applicable date of grant. However, certain awards that were granted during the years ended December 31, 2017 and 2016 in exchange for cancelled awards were immediately vested and fully exercisable on the date of grant because they were either granted in exchange for the cancellation of outstanding options granted under the 2011 Plan or the Rockwater Equity Plan, as applicable, that were fully vested and exercisable prior to such cancellation.

The Company utilized the Monte Carlo simulation model to determine fair value of the options granted during January 2018, which incorporates assumptions to value equity‑based awards. The risk‑free interest rate is based on the U.S. Treasury yield curve in effect for the expected term of the option at the time of grant. The expected life of the options was based on the vesting period and term of the options awarded, which is ten years.

The table below presents the assumptions used in determining the fair value of stock options granted during January 2018. The weighted‑average grant date fair value of stock options granted was $8.98.

	Assumptions
Underlying equity	$	20.50
Strike price	$	20.50 - 30.75
Dividend yield (%)		0.0	%
Risk free rate (%)		2.3	%
Volatility (%)		50.0	%
Expected term (years)		10.0

A summary of the Company’s stock option activity and related information as of and for the Current Period is as follows:

	For the six months ended June 30, 2018
				Weighted-average
		Weighted-average		Remaining Contractual	Aggregate Intrinsic
	Stock Options	Exercise Price		Term (Years)	Value (in thousands) (a)
Beginning balance, outstanding	3,495,935	$	14.12	8.7	$	5,998
Granted	584,846		26.02
Exercised	(37,209)		10.13
Forfeited	(29,626)		16.94
Expired	(38,611)		17.32
Ending balance, outstanding	3,975,335	$	15.85	5.0	$	6,566
Ending balance, exercisable	1,763,150	$	12.06	3.6	$	4,356
Non-vested at end of period	1,073,723	$	19.25

(a)Aggregate intrinsic value for stock options is based on the difference between the exercise price of the stock options and the quoted closing Class A Common Stock price of $14.53 as of June 29, 2018.  

The Company recognized $1.4 million, $0.5 million, $2.7 million and $1.0 million of compensation expense related to stock options during the Current Quarter, Prior Quarter, Current Period and Prior Period, respectively. As of June 30, 2018, there was $7.5 million of unrecognized equity-based compensation expense related to non-vested stock options. This cost is expected to be recognized over a weighted-average period of 1.5 years.

Restricted Stock Awards and Restricted Stock Units

The value of the restricted stock awards and restricted stock units issued was established by the market price of the Class A Common Stock on the date of grant and is being recorded as compensation expense ratably over the vesting term which is generally one to three years from the applicable date of grant. The Company recognized compensation expense of $1.2 million, $0.1 million, $2.1 million and $0.2 million related to the restricted stock awards and restricted stock units for the Current Quarter, Prior Quarter, Current Period and Prior Period, respectively. As of June 30, 2018, there was $8.3 million of unrecognized compensation expense with a weighted-average remaining life of 2.1 years related to unvested restricted stock awards and restricted stock units.

A summary of the Company’s restricted stock awards activity and related information for the Current Period is as follows:

	For the six months ended June 30, 2018
		Weighted-average
	Restricted Stock Awards	Grant Date Fair Value
Non-vested at December 31, 2017	299,801	$	16.36
Granted	430,595		19.62
Vested	(137,824)		16.36
Forfeited	(18,640)		16.36
Non-vested at June 30, 2018	573,932	$	18.80

A summary of the Company’s restricted stock unit activity and related information for the Current Period is as follows:

	For the six months ended June 30, 2018
		Weighted-average
	Restricted Stock Units	Grant Date Fair Value
Non-vested at December 31, 2017	30,360	$	19.88
Granted	—		—
Vested	(27,860)		19.96
Non-vested at June 30, 2018	2,500	$	19.00

Performance Share Units (PSUs)

During 2018, the Company approved grants of performance share units (“PSUs”) that are subject to both performance-based and service-based vesting provisions. The number of shares of Class A Common Stock issued to a recipient upon vesting of the PSU will be calculated based on performance against certain metrics that relate to the Company’s return on asset  performance over the January 1, 2018 through December 31, 2020 performance period. The target number of shares of Class A Common Stock subject to each PSU is one; however, based on the achievement of performance criteria, the number of shares of Class A Common Stock that may be received in settlement of each PSU can range from zero to 1.75 times the target number. The PSUs become earned at the end of the performance period after the attainment of the performance level has been certified by the compensation committee, which will be no later than June 30, 2021, assuming the minimum performance metrics are achieved. The target PSUs that become earned PSUs during the performance period will be determined in accordance with the following table:

Return on Assets at Performance Period End Date	Percentage of Target PSUs Earned
Less than 9.6%	0%
9.6%	50%
12%	100%
14.4%	175%

Compensation expense related to the PSUs is determined by multiplying the number of shares of Class A Common Stock underlying such awards that, based on the Company’s estimate, are probable to vest, by the measurement-date (i.e., the last day of each reporting period date) fair value and recognized using the accelerated attribution method. The Company recognized compensation expense of $0.4 million and $0.6 million related to the PSUs for the Current Quarter and Current Period, respectively.

As of June 30, 2018, the fair value of outstanding PSUs issued was $4.0 million. The unrecognized compensation cost related to our unvested PSUs is estimated to be $3.4 million and is expected to be recognized over a weighted-average period of 2.5 years as of June 30, 2018.

The following table summarizes the information about the performance share units that were outstanding at June 30, 2018:

Period Granted	Target Shares Outstanding at Beginning of Period	Target Shares Granted	Target Shares Vested	Target Shares Forfeited	Target Shares Outstanding at End of Period
2018	—	274,106	—	—	274,106
Total	—	274,106	—	—	274,106

Stock-Settled Incentive Awards

Effective May 17, 2018, Company approved grants of stock-settled incentive awards to certain key employees under the 2016 Equity Incentive Plan that are subject to both market-based and service-based vesting provisions. These awards will vest after a two-year service period and, if earned, settled in shares of the Company stock. The ultimate amount earned is based on the achievement of the market metrics, which is based on the stock price of the Company at the vesting date, for which payout could range from 0% to 200%. Any award not earned on the vesting date is forfeited. The target amount that becomes earned during the performance period will be determined in accordance with the following table:

Stock Price at Vesting Date(1)	Percentage of Target Amount Earned
Less than $20.00	0%
At least $20.00, but less than $25.00	100%
$25.00 or greater	200%

(1) The stock price at vesting date equals the greater of (i) the fair market value of a share of the Company’s stock on the vesting date, or (ii) the volume weighted average closing price of a share of the Company’s stock, as reported on the NYSE, for the 30 trading days preceding the vesting date.

The target amount of stock-settled incentive awards granted was $3.8 million. However, the ultimate settlement of the awards will be in shares of the Company’s stock with fair market value equal to the earned amount, which could range from 0% to 200% of the target amount depending on the stock price at vesting date.

Compensation expense associated with the stock-settled incentive awards is recognized ratably over the corresponding requisite service period. The fair value of the stock-settled incentive awards was determined using the Black-Scholes-Merton probability model. The key assumptions in the model included price, the expected volatility of our stock, risk-free interest rate is based on U.S. Treasury yield curve, cross-correlations between our and our self-determined peer companies’ asset, equity and debt-to-equity volatility.

During both the Current Quarter and the Current Period, the Company recognized stock compensation expense of $0.1 million related to the stock-settled incentive awards. The unrecognized compensation cost related to our unvested stock-settled incentive awards is estimated to be $1.4 million and is expected to be recognized over approximately 22 months as of June 30, 2018.

Employee Stock Purchase Plan (ESPP)

We have an Employee Stock Purchase Plan (“ESPP”) under which employees that have been continuously employed for at least one year may purchase shares of our common stock at a discount. The plan provides for four offering periods for purchases: December 1 through February 28, March 1 through May 31, June 1 through August 31 and September 1 through November 30. At the end of each offering period, enrolled employees purchase shares of our common stock at a price equal to 95% of the market value of the stock on the last day of such offering period. The purchases are made at the end of an offering period with funds accumulated through payroll deductions over the course of the offering period. Subject to limitations set forth in the plan and under IRS regulations, eligible employees may elect to contribute a maximum of $15,000 to the plan in a single calendar year. The plan is deemed to be noncompensatory.

The following table summarizes ESPP activity (in thousands, except shares):

	For the six months ended June 30, 2018
Cash received for shares issued	$	54
Shares issued		3,986

Phantom unit awards

The Company’s phantom unit awards were cash settled awards that were contingent upon meeting certain equity returns and a liquidation event. The settlement amount was based on the fair market value of a share of the Company’s Class A common stock on the date of completion of the Company’s IPO, which constituted a liquidation event with respect to such phantom unit awards. As a result of the cash‑settlement feature of these awards, the Company considered these awards to be liability awards, which were measured at fair value at each reporting date and the pro rata vested portion of the award was recognized as a liability to the extent that the performance condition was deemed probable. On May 5, 2017, the Company settled its outstanding phantom unit awards for an aggregate amount equal to $7.8 million as a result of the completion of its IPO, which constituted a liquidity event with respect to such phantom unit awards. Based on the fair market value of a share of the Company’s Class A common stock on the date of the IPO of $14.00, the cash payment with respect to each phantom unit was approximately $5.53, before employer taxes.  The Company recognized compensation expense of $7.8 million during both the Prior Quarter and the Prior Period related to the settlement of its phantom unit awards. As of June 30, 2018 and 2017 there were no phantom units outstanding.

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FAIR VALUE MEASUREMENT

6 Months Ended

Jun. 30, 2018

FAIR VALUE MEASUREMENT

FAIR VALUE MEASUREMENT

NOTE 11—FAIR VALUE MEASUREMENT

The Company utilizes fair value measurements to measure assets and liabilities in a business combination or assess impairment of property and equipment, intangible assets and goodwill. Fair value is defined as the amount at which an asset (or liability) could be bought (or incurred) or sold (or settled) in an orderly transaction between market participants at the measurement date. Further, ASC 820, Fair Value Measurements, establishes a framework for measuring fair value, establishes a fair value hierarchy based on the quality of inputs used to measure fair value, and includes certain disclosure requirements. Fair value estimates are based on either (i) actual market data or (ii) assumptions that other market participants would use in pricing an asset or liability, including estimates of risk.

ASC 820 establishes a three‑level valuation hierarchy for disclosure of fair value measurements. The valuation hierarchy categorizes assets and liabilities measured at fair value into one of three different levels depending on the observability of the inputs employed in the measurement. The three levels are defined as follows:

Level 1—Unadjusted quoted prices for identical assets or liabilities in active markets.

Level 2—Quoted prices for similar assets or liabilities in non‑active markets, and inputs that are observable for the asset or liability, either directly or indirectly, for substantially the full term of the financial instrument.

Level 3—Inputs that are unobservable and significant to the fair value measurement (including the Company’s own assumptions in determining fair value).

A financial instrument’s categorization within the valuation hierarchy is based upon the lowest level of input that is significant to the fair value measurement. The Company’s assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment and considers factors specific to the asset or liability. There were no transfers into, or out of, the three levels of the fair value hierarchy for the six months ended June 30, 2018 or the year ended December 31, 2017.

Other fair value considerations

The carrying values of the Company’s current financial instruments, which include cash and cash equivalents, accounts receivable trade and accounts payable, approximate their fair value at June 30, 2018 and December 31, 2017 due to the short‑term maturity of these instruments. The carrying value of debt as of June 30, 2018 and December 31, 2017 approximates fair value due to variable market rates of interest. The fair value of debt at June 30, 2018 and December 31, 2017, which is a Level 3 measurement, is estimated based on the Company’s incremental borrowing rates for similar types of borrowing arrangements, when quoted market prices are not available. The estimated fair values of the Company’s financial instruments are not necessarily indicative of the amounts that would be realized in a current market exchange. The consideration transferred and the purchase price allocation of identified assets acquired and liabilities assumed related to the Rockwater Merger, Resource Water Acquisition and GRR Acquisition are based on the Company’s estimate of fair value utilizing Level 3 inputs at the date of acquisition. Refer to Note 3 – Acquisitions for further discussion.

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RELATED PARTY TRANSACTIONS

6 Months Ended

Jun. 30, 2018

RELATED PARTY TRANSACTIONS

RELATED PARTY TRANSACTIONS

NOTE 12—RELATED PARTY TRANSACTIONS

The Company considers its related parties to be those stockholders who are beneficial owners of more than 5.0% of its common stock, executive officers, members of its board of directors or immediate family members of any of the foregoing persons. The Company has entered into a significant number of transactions with related parties. In accordance with the Company’s related persons transactions policy, the Company’s board of directors regularly reviews these transactions; however, the Company’s results of operations may have been different if these transactions were conducted with non‑related parties.

During the Current Quarter, sales to related parties were $1.2 million and purchases from related party vendors were $4.2 million. These purchases consisted of $1.0 million relating to purchases of property and equipment, $2.6 million relating to the rental of certain equipment or other services used in operations and $0.6 million relating to management, consulting and other services.

During the Prior Quarter, sales to related parties were $0.6 million and purchases from related party vendors were $1.7 million. These purchases consisted of $0.5 million relating to purchases of property and equipment, $0.1 million relating to inventory and consumables, $0.4 million relating to the rental of certain equipment or other services used in operations, and $0.7 million relating to management, consulting and other services.

During the Current Period, sales to related parties were $3.6 million and purchases from related party vendors were $7.5 million. These purchases consisted of $2.6 million relating to purchases of property and equipment, $0.2 million relating to inventory and consumables, $3.8 million relating to the rental of certain equipment or other services used in operations and $0.9 million relating to management, consulting and other services.

During the Prior Period, sales to related parties were $1.1 million and purchases from related party vendors were $2.9 million. These purchases consisted of $0.7 million relating to purchases of property and equipment, $0.2 million relating to inventory and consumables, $0.8 million relating to the rental of certain equipment or other services used in operations, and $1.2 million relating to management, consulting and other services.

Tax receivable agreements

In connection with the Select 144A Offering, the Company entered into the Tax Receivable Agreements with the TRA Holders.

The first of the Tax Receivable Agreements, which the Company entered into with Legacy Owner Holdco and Crestview Partners II GP, L.P. (“Crestview GP”), generally provides for the payment by the Company to such TRA Holders of 85% of the net cash savings, if any, in U.S. federal, state and local income and franchise tax that the Company actually realizes (computed using simplifying assumptions to address the impact of state and local taxes) or is deemed to realize in certain circumstances in periods after the Select 144A Offering as a result of, as applicable to each such TRA Holder, (i) certain increases in tax basis that occur as a result of the Company’s acquisition (or deemed acquisition for U.S. federal income tax purposes) of all or a portion of such TRA Holder’s SES Holdings LLC Units in connection with the Select 144A Offering or pursuant to the exercise of the Exchange Right or the Company’s Call Right and (ii) imputed interest deemed to be paid by the Company as a result of, and additional tax basis arising from, any payments the Company makes under such Tax Receivable Agreement.

The second of the Tax Receivable Agreements, which the Company entered into with an affiliate of the Contributing Legacy Owners and Crestview GP, generally provides for the payment by the Company to such TRA Holders of 85% of the net cash savings, if any, in U.S. federal, state and local income and franchise tax that the Company actually realizes (computed using simplifying assumptions to address the impact of state and local taxes) or is deemed to realize in certain circumstances in periods after the Select 144A Offering as a result of, as applicable to each such TRA Holder, (i) any net operating losses available to the Company as a result of certain reorganization transactions entered into in connection with the Select 144A Offering and (ii) imputed interest deemed to be paid by the Company as a result of any payments the Company makes under such Tax Receivable Agreement.

On July 18, 2017, the Company’s boardof directors approved amendments to each of the Tax Receivable Agreements revising the definition of a “change of control” for purposes of the Tax Receivable Agreements and acknowledging that the Rockwater Merger would not result in such a change of control.

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INCOME TAXES

6 Months Ended

Jun. 30, 2018

INCOME TAXES

INCOME TAXES

NOTE 13—INCOME TAXES

The Company’s effective tax rates for the Current Quarter, Prior Quarter, Current Period and Prior Period were 0.6%, (1.3)%,  1.5% and (0.1)%, respectively. The effective tax rates for the Current and Prior Quarter and the Current and Prior Period differ from the statutory rate of 21% and 35%, respectively, due to net income allocated to noncontrolling interests, state income taxes, and valuation allowances. The change in the effective tax rate is primarily due to positive pretax income in the Current Period relative to a loss in the Prior Period. The Company recorded income tax expense (benefit) of $0.2 million, $(0.1) million, $0.6 million and a nominal amount for the Current Quarter, Prior Quarter, Current Period and Prior Period, respectively.

The Tax Cuts and Jobs Act (“the TCJA”), was enacted on December 22, 2017, and the Company recorded provisional estimates for the impacts of the TCJA in the December 31, 2017 period. Such amounts remain provisional and the Company has not made any material adjustments as of June 30, 2018. Staff Accounting Bulletin No. 118 provides the Company with one year from the date of enactment to finalize its accounting related to the TCJA. Certain provisions of the TCJA became effective beginning on January 1, 2018 and the Company has incorporated reasonable estimates of these provisions into its calculation of its effective annual tax rate and its tax expense for the period ending June 30, 2018. The Company’s reasonable estimates may be affected in the future as additional regulatory guidance is provided and the Company gains a more thorough understanding of the TCJA. The Company intends to make any necessary final adjustments to the estimates upon the filing of its remaining tax returns during the quarter ending September 30, 2018. The Company does not anticipate the adjustments, if any, will be material.

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NONCONTROLLING INTERESTS

6 Months Ended

Jun. 30, 2018

NONCONTROLLING INTERESTS.

NONCONTROLLING INTERESTS

NOTE 14—NONCONTROLLING INTERESTS

The Company has ownership interests in multiple subsidiaries that are consolidated within the Company’s financial statements but are not wholly owned. During the Current Period and Prior Period, the Company entered into transactions that impacted its ownership interest in certain of these subsidiaries while maintaining control over such subsidiaries. As a result of the Company’s change in ownership interest in these subsidiaries, the Company reduced its noncontrolling interests and recognized an increase in equity related to transactions with holders of noncontrolling interests. The Company reports a noncontrolling interest representing the common units of SES Holdings held by Legacy Owner Holdco. Changes in Select Inc.’s ownership interest in SES Holdings while it retains its controlling interest are accounted for as equity transactions.

The following table summarizes the effects of changes in noncontrolling interests on equity for the Current Period and the Prior Period:

	For the six months ended June 30,
	2018		2017
	(in thousands)
Net income (loss) attributable to Select Energy Services, Inc.	$	27,062	$	(8,388)
Transfers from noncontrolling interests:
Decrease in additional paid-in capital as a result of the contribution of proceeds from the IPO to SES Holdings, LLC in exchange for common units		—		(41,128)
Decrease in additional paid-in capital as a result of the contribution of net assets acquired to SES Holdings, LLC in exchange for common units		—		(4,195)
Decrease in additional paid-in capital as a result of stock option exercises		(1)		—
Increase in additional paid-in capital as a result of restricted stock issuance, net of forfeitures		2,195		—
Increase in additional paid-in capital as a result of issuance of common stock due to vesting of restricted stock units		104		—
Increase in additional paid-in capital as a result of the repurchase of common units of SES Holdings, LLC		74		—
Increase in additional paid-in capital as a result of the conversion of Class B to Class A shares		111,803		—
Decrease in additional paid-in capital as a result of the Employee Stock Purchase Plan shares issued		(4)		—
Change to equity from net income (loss) attributable to Select Energy Services, Inc. and transfers from noncontrolling interests	$	141,233	$	(53,711)

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EARNINGS PER SHARE

6 Months Ended

Jun. 30, 2018

EARNINGS PER SHARE

EARNINGS PER SHARE

NOTE 15—EARNINGS (LOSS) PER SHARE

Earnings per share are based on the amount of income allocated to the shareholders and the weighted‑average number of shares outstanding during the period for each class of common stock. Outstanding options to purchase 1,834,105 and 1,848,482 shares are not included in the calculation of diluted weighted-average shares outstanding for the Current Quarter and Current Period, respectively, as the effect is antidilutive.

The following tables presents the Company’s calculation of basic and diluted earnings per share for the Current and Prior Quarter and the Current and Prior Period (dollars in thousands, except share and per share amounts):

	Three months ended June 30, 2018								Three months ended June 30, 2017
	Select Energy Services, Inc.		Class A		Class A-2		Class B		Select Energy Services, Inc.		Class A		Class A-1		Class B
Numerator:
Net income (loss)	$	25,023							$	(10,490)
Net (income) loss attributable to noncontrolling interests		(8,060)								6,274
Net income (loss) attributable to Select Energy Services, Inc. — basic		16,963	$	16,963	$	—	$	—		(4,216)	$	(2,184)	$	(2,032)	$	—
Add: Reallocation of net income attributable to noncontrolling interests for the dilutive effect of restricted stock		6		6		—		—		—		—		—		—
Add: Reallocation of net income attributable to noncontrolling interests for the dilutive effect of stock options		22		22		—		—		—		—		—		—
Add: Reallocation of net income attributable to noncontrolling interests for the dilutive effect of ESPP		—		—		—		—		—		—		—		—
Net income (loss) attributable to Select Energy Services, Inc. — diluted	$	16,991	$	16,991	$	—	$	—	$	(4,216)	$	(2,184)	$	(2,032)	$	—
Denominator:
Weighted-average shares of common stock outstanding — basic				71,412,158		—		34,677,182				14,075,052		13,092,308		38,462,541
Dilutive effect of restricted stock				71,969		—		—				—		—		—
Dilutive effect of stock options				261,582		—		—				—		—		—
Dilutive effect of ESPP				99		—		—				—		—		—
Weighted-average shares of common stock outstanding — diluted				71,745,808		—		34,677,182				14,075,052		13,092,308		38,462,541
Earnings (loss) per share:
Basic			$	0.24	$	—	$	—			$	(0.16)	$	(0.16)	$	—
Diluted			$	0.24	$	—	$	—			$	(0.16)	$	(0.16)	$	—

	Six months ended June 30, 2018								Six months ended June 30, 2017
	Select Energy Services, Inc.		Class A		Class A-2		Class B		Select Energy Services, Inc.		Class A		Class A-1		Class B
Numerator:
Net income (loss)	$	41,155							$	(22,770)
Net (income) loss attributable to noncontrolling interests		(14,093)								14,382
Net income (loss) attributable to Select Energy Services, Inc. — basic		27,062	$	25,784	$	1,278	$	—		(8,388)	$	(3,200)	$	(5,188)	$	—
Add: Reallocation of net income attributable to noncontrolling interests for the dilutive effect of restricted stock		17		18		(1)		—		—		—		—		—
Add: Reallocation of net income attributable to noncontrolling interests for the dilutive effect of stock options		49		53		(4)		—		—		—		—		—
Add: Reallocation of net income attributable to noncontrolling interests for the dilutive effect of ESPP		—		—		—		—		—		—		—		—
Net income (loss) attributable to Select Energy Services, Inc. — diluted	$	27,128	$	25,855	$	1,273	$	—	$	(8,388)	$	(3,200)	$	(5,188)	$	—
Denominator:
Weighted-average shares of common stock outstanding — basic				65,270,048		3,235,746		37,488,964				8,999,294		14,587,845		38,462,541
Dilutive effect of restricted stock				118,719		—		—				—		—		—
Dilutive effect of stock options				343,127		—		—				—		—		—
Dilutive effect of ESPP				83		—		—				—		—		—
Weighted-average shares of common stock outstanding — diluted				65,731,977		3,235,746		37,488,964				8,999,294		14,587,845		38,462,541
Earnings (loss) per share:
Basic			$	0.40	$	0.40	$	—			$	(0.36)	$	(0.36)	$	—
Diluted			$	0.39	$	0.39	$	—			$	(0.36)	$	(0.36)	$	—

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SEGMENT INFORMATION

6 Months Ended

Jun. 30, 2018

SEGMENT INFORMATION

SEGMENT INFORMATION

NOTE 16—SEGMENT INFORMATION

Select Inc. is an oilfield services company that provides solutions to the North American onshore oil and natural gas industry. The Company’s services are offered through three operating segments. Operating segments are defined as components of an enterprise for which separate financial information is evaluated regularly by the chief operating decision maker (“CODM”) in deciding how to allocate resources and assess performance. The Company’s chief operating decision maker assesses performance and allocates resources on the basis of the three reportable segments. Corporate and other expenses that do not individually meet the criteria for segment reporting are reported separately as Corporate. Each operating segment reflects a reportable segment led by separate managers that report directly to the Company’s CODM.

As a result of the Rockwater Merger, during the fourth quarter 2017, the Company reorganized its reporting structure and aligned its segments and underlying businesses to execute on the strategies of the combined company.  The Company’s revised operating and reportable segments are Water Solutions, Oilfield Chemicals and Wellsite Services. Accordingly, prior period segment information has been retrospectively revised as of and for the quarter ended June 30, 2017.

The Company’s CODM assesses performance and allocates resources on the basis of the following three reportable segments:

Water Solutions —The Water Solutions segment provides water‑related services to customers that include major integrated oil companies and independent oil and natural gas producers. These services include: the sourcing of water; the transfer of the water to the wellsite through permanent pipeline infrastructure and temporary pipe; the containment of fluids off‑ and on‑location; measuring and monitoring of water; the filtering and treatment of fluids, well testing and handling of flowback and produced formation water; and the transportation and recycling or disposal of drilling, completion and production fluids.

Oilfield Chemicals —The Oilfield Chemicals segment develops, manufactures and provides a full suite of chemicals utilized in hydraulic fracturing, stimulation, cementing and well completions, including polymer slurries, crosslinkers, friction reducers, buffers, breakers and other chemical technologies, to leading pressure pumping service companies in the United States.

Wellsite Services —The Wellsite Completion and Construction Services segment provides oil and natural gas operators with a variety of services, including provision of workforce accommodations and surface rental equipment, crane and logistics services, wellsite and pipeline construction, field and well services, sand hauling and fluid logistics services. In addition, we provide water transfer, fluid hauling, containment and rental services in Canada. These services are performed to establish, maintain or improve production throughout the productive life of an oil or gas well or to otherwise facilitate other services performed on a well.

Financial information by segment for the Current and Prior Quarter and the Current and Prior Period is as follows:

	For the three months ended June 30, 2018
			Income (loss)		Depreciation and		Capital
	Revenue		before taxes		Amortization		Expenditures
	(in thousands)
Water solutions	$	273,788	$	32,997	$	21,599	$	37,875
Oilfield chemicals		64,842		1,031		2,823		3,424
Wellsite services		55,400		1,983		6,023		4,520
Eliminations		(783)		—		—		—
Income from operations				36,011
Corporate		—		(11,216)		807		—
Interest expense, net		—		(1,342)		—		—
Other income, net		—		1,720		—		—
	$	393,247	$	25,173	$	31,252	$	45,819

	For the three months ended June 30, 2017
			Income (loss)		Depreciation and		Capital
	Revenue		before taxes		Amortization		Expenditures
	(in thousands)
Water solutions	$	107,738	$	3,479	$	18,642	$	23,058
Oilfield chemicals		—		—		—		—
Wellsite services		26,922		(799)		3,878		8,010
Eliminations		(211)		(1)		—		—
Income from operations				2,679
Corporate		—		(14,588)		491		—
Interest expense, net		—		(671)		—		—
Other income, net		—		1,952		—		—
	$	134,449	$	(10,628)	$	23,011	$	31,068

	For the six months ended June 30, 2018
			Income (loss)		Depreciation and		Capital
	Revenue		before taxes		Amortization		Expenditures
	(in thousands)
Water solutions	$	531,320	$	61,200	$	42,842	$	61,769
Oilfield chemicals		128,472		1,962		5,738		5,679
Wellsite services		111,122		1,278		12,747		9,477
Eliminations		(1,272)		—		—		—
Income from operations				64,440
Corporate		—		(21,042)		1,348		—
Interest expense, net		—		(2,493)		—		—
Other income, net		—		862		—		—
	$	769,642	$	41,767	$	62,675	$	76,925

	For the six months ended June 30, 2017
			Income (loss)		Depreciation and		Capital
	Revenue		before taxes		Amortization		Expenditures
	(in thousands)
Water solutions	$	186,503	$	(4,192)	$	36,190	$	35,013
Oilfield chemicals		—		—		—		—
Wellsite services		48,732		(3,451)		7,534		10,065
Eliminations		(861)		—		—		—
Loss from operations				(7,643)
Corporate		—		(16,774)		937		—
Interest expense, net		—		(1,401)		—		—
Other income, net		—		3,016		—		—
	$	234,374	$	(22,802)	$	44,661	$	45,078

Total assets by segment as of June 30, 2018 and December 31, 2017 is as follows:

	As of		As of
	June 30, 2018		December 31, 2017
	(in thousands)
Water solutions	$	1,079,348	$	994,159
Oilfield chemicals		180,999		186,333
Wellsite services		143,582		151,272
Corporate		29,813		24,604
	$	1,433,742	$	1,356,368

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SUBSEQUENT EVENTS

6 Months Ended

Jun. 30, 2018

SUBSEQUENT EVENTS

SUBSEQUENT EVENTS

NOTE 17—SUBSEQUENT EVENTS

The Company has evaluated subsequent events for potential recognition and/or disclosure through August 10, 2018, the date these consolidated financial statements were available to be issued.

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SIGNIFICANT ACCOUNTING POLICIES (Policies)

6 Months Ended

Jun. 30, 2018

SIGNIFICANT ACCOUNTING POLICIES

Use of estimates

Use of estimates:  The preparation of consolidated financial statements in conformity with 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.

On an ongoing basis, the Company evaluates its estimates, including those related to recoverability of long‑lived assets and intangibles, useful lives used in depreciation and amortization, uncollectible accounts receivable, income taxes, self‑insurance liabilities, share‑based compensation and contingent liabilities. The Company bases its estimates on historical and other pertinent information that are believed to be reasonable under the circumstances. The accounting estimates used in the preparation of the consolidated financial statements may change as new events occur, as more experience is acquired, as additional information is obtained and as the Company’s operating environment changes.

Asset retirement obligations

Asset retirement obligations:  The following table describes the changes to the Company’s asset retirement obligation (ARO) liability for the Current Period:

	For the six months ended June 30, 2018
	(in thousands)
Balance at beginning of Current Period	$	1,846
Accretion expense, included in depreciation and amortization expense		97
Change in estimate		386
Divestitures		(508)
Balance at end of Current Period	$	1,821

We review the adequacy of our asset retirement obligation liabilities whenever indicators suggest that the estimated cash flows underlying the liabilities have changed. The Company’s ARO liabilities are included in accrued expenses and other current liabilities and other long term liabilities in the accompanying consolidated balance sheets for the six months ended June 30, 2018 and year ended December 31, 2017.

Change in depreciable lives of property and equipment

Change in depreciable lives of property and equipment: In accordance with its policy, the Company reviews the estimated useful lives of its fixed assets on an ongoing basis. This most recent review, conducted in first quarter 2018, indicated that the economic lives of certain assets were longer than the historic asset lives previously used by the Company. As a result, effective January 1, 2018, the Company changed its estimates of the useful lives of certain assets included in vehicles and equipment and machinery and equipment to better reflect the estimated periods during which these assets will remain in service. The average estimated useful lives of the assets impacted in the vehicles and equipment category increased from 6.0 to 8.1 years while the average estimated useful lives of assets impacted in machinery and equipment increased from 5.5 years to 6.9 years. The change in the estimated useful lives of fixed assets was implemented on a prospective basis and does not require restatement of previously reported depreciation and amortization expense. For the Current Quarter the effect of this change in accounting estimate was to reduce depreciation and amortization expense by $4.8 million, increase net income by $4.6 million and increase basic and diluted earnings per share by $0.04 attributable to our stockholders. For the Current Period the effect of this change in accounting estimates was to reduce depreciation and amortization expense by $9.5 million, increase net income by $9.3 million and increase basic and diluted earnings per share by $0.09 attributable to our stockholders.

Emerging Growth Company Status

Emerging Growth Company status:  Under the Jumpstart Our Business Startups Act of 2012 (the “JOBS Act”), the Company is an “emerging growth company,” or an “EGC,” which allows the Company to have an extended transition period for complying with new or revised accounting standards pursuant to Section 107(b) of the JOBS Act. The Company intends to take advantage of all of the reduced reporting requirements and exemptions, including the longer phase‑in periods for the adoption of new or revised financial accounting standards under Section 107 of the JOBS Act until the Company is no longer an emerging growth company. The Company’s election to use the phase‑in periods permitted by this election may make it difficult to compare the Company’s financial statements to those of non‑emerging growth companies and other emerging growth companies that have opted out of the longer phase‑in periods under Section 107 of the JOBS Act and who will comply with new or revised financial accounting standards. 

The Company will lose its emerging growth company status as of December 31, 2018, as the market value of our common stock held by non-affiliates was greater than $700 million as of June 30, 2018.

Recent accounting pronouncements:

Recent accounting pronouncements:  In May 2014, the Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update (“ASU”) 2014-09, Revenue from Contracts with Customers, which supersedes the revenue recognition requirements in Revenue Recognition (Topic 605), and requires entities to recognize revenue in a way that depicts the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled to in exchange for those goods or services. In August 2015, the FASB deferred the effective date by one year to annual reporting periods beginning after December 15, 2017, including interim reporting periods within that reporting period. As the Company will lose its EGC status on December 31, 2018, the ASU will become effective for calendar year 2018 at that time. The Company does not expect the adoption of the ASU or related ASU’s 2016-08, 2016-10, 2016-12 and 2016-20, will have a material impact on its consolidated financial statements and is evaluating the impact on the related disclosures and internal controls over financial reporting. The Company will use the modified retrospective method upon adoption of the ASU.

In February 2016, the FASB issued ASU 2016-02, Leases, which modifies the lease recognition requirements and requires entities to recognize the assets and liabilities arising from leases on the balance sheet and to disclose key qualitative and quantitative information about the entity’s leasing arrangements. Based on the original guidance in ASU 2016-02, lessees and lessors would have been required to recognize and measure leases at the beginning of the earliest period presented using a modified retrospective approach, including a number of optional practical expedients. In July 2018, the FASB issued ASU No. 2018-11, Leases (ASC 842): Targeted Improvements, which provides entities with an option to apply the guidance prospectively, instead of retrospectively, and allows for other classification provisions. ASU 2016-02 is effective for annual reporting periods beginning after December 15, 2018, including interim periods within those fiscal years, with early adoption permitted. As the Company will lose its EGC status on December 31, 2018, the ASU will become effective January 1, 2019. The Company currently anticipates that it will elect to recognize its lease assets and liabilities on a prospective basis, beginning on January 1, 2019, using an optional transition method. The adoption of these ASU’s will have an impact on how the Company’s consolidated balance sheets, statements of operations, cash flows, and disclosures contained in its notes to consolidated financial statements will be presented; however, because the Company is currently evaluating the impact of these ASU’s and, ASU 2018-01, Land Easements, it is unable to quantify the overall impact at this time.

In March 2016, the FASB issued ASU 2016-09, Improvements to Employee Share-Based Payment Accounting, which is intended to simplify several aspects of the accounting for share‑based payment award transactions. ASU 2016-09 was effective for annual reporting periods beginning after December 15, 2016, and interim periods within those annual periods. As an EGC utilizing the extended transition period for new accounting pronouncements, this pronouncement was effective for annual reporting periods beginning after December 15, 2017, and interim periods within fiscal years beginning after December 15, 2018. As the Company will lose its EGC status on December 31, 2018, the ASU will become effective for calendar year 2018 at that time. Certain amendments in this update should be applied prospectively, while other amendments in the update should be applied retrospectively, with early adoption permitted in any interim or annual period. The Company is currently evaluating the impact that the new accounting guidance will have on its consolidated financial statements and related disclosures.

In August 2016, the FASB issued ASU 2016-15, Classification of Certain Cash Receipts and Cash Payments, which amends eight specific cash flow issues with the objective of reducing diversity in practice. ASU 2016-15 was effective for annual reporting periods beginning after December 15, 2017, and interim periods within those fiscal years. As an EGC utilizing the extended transition period for new accounting pronouncements, this pronouncement is effective for annual reporting periods beginning after December 15, 2018, and interim periods within fiscal years beginning after December 15, 2019. As the Company will lose its EGC status on December 31, 2018, the ASU will become effective for calendar year 2018 at that time. The amendments in this ASU should be applied using a retrospective approach. The Company is currently evaluating the impact that the new accounting guidance will have on its consolidated financial statements and related disclosures.

In January 2017, the FASB issued ASU 2017-01, Clarifying the Definition of a Business, with the objective of adding guidance to assist entities with evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. This update was effective for fiscal years and interim periods within fiscal years beginning after December 15, 2017. As an EGC utilizing the extended transition period for new accounting pronouncements, this pronouncement is effective for annual reporting periods beginning after December 15, 2018, and interim periods within fiscal years beginning after December 15, 2019. As the Company will lose its EGC status on December 31, 2018, the ASU will become effective for calendar year 2018 at that time. The amendments in this ASU should be applied prospectively. The Company does not expect the adoption of the ASU will have a material impact on its consolidated financial statements and related disclosures.

In January 2017, the FASB issued ASU 2017-04, Simplifying the Test for Goodwill Impairment. This pronouncement removes Step 2 of the goodwill impairment test, which requires a hypothetical purchase price allocation. A goodwill impairment will now be the amount by which a reporting unit’s carrying value exceeds its fair value, not to exceed the carrying amount of goodwill. This update is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2019. The amendments in this ASU should be applied prospectively. The Company is currently evaluating the impact that the new accounting guidance will have on its consolidated financial statements and related disclosures.

In May 2017, the FASB issued ASU 2017-09, Scope of Modification Accounting. This pronouncement provides guidance about which changes to the terms and conditions of a share-based payment award require an entity to apply modification accounting in ASC 718. The pronouncement should be applied prospectively to an award modified on or after the adoption date. The Company adopted this ASU in 2018, and the adoption of this guidance did not materially affect its consolidated financial statements and related disclosures.

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SIGNIFICANT ACCOUNTING POLICIES (Tables)

6 Months Ended

Jun. 30, 2018

SIGNIFICANT ACCOUNTING POLICIES

Summary of change in asset retirement obligations

	For the six months ended June 30, 2018
	(in thousands)
Balance at beginning of Current Period	$	1,846
Accretion expense, included in depreciation and amortization expense		97
Change in estimate		386
Divestitures		(508)
Balance at end of Current Period	$	1,821

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ACQUISITION (Tables)

6 Months Ended

Jun. 30, 2018

Rockwater Merger

Schedule Of consideration transferred and the estimated fair value of identified assets acquired and liabilities

Preliminary purchase price allocation	Amount
Consideration  transferred	(in thousands)
Class A Common Stock (25,914,260 shares)	$	423,957
Class A-2 Common Stock (6,731,845 shares)		110,133
Class B Common Stock (4,356,477 shares) and SES Holdings common units issued (4,356,477 units)		71,272
Fair value of previously held interest in Rockwater		2,310
Fair value of Rockwater share-based awards attributed to pre-acquisition service		12,529
Total consideration transferred		620,201
Less: identifiable assets acquired and liabilities assumed
Working capital(1)		143,571
Property and equipment(2)		183,975
Intangible assets
Customer relationships		89,007
Trademarks and patents		31,215
Non-compete agreements		3,810
Other long-term assets		62
Deferred tax liabilities		(408)
Long-term debt		(80,555)
Other long-term liabilities		(2,650)
Total identifiable net assets acquired		368,027
Goodwill		252,174
Fair value allocated to net assets acquired	$	620,201

(1) During the Current Period, the Company obtained additional information related to working capital which led to a decrease of $3.3 million and a corresponding increase in goodwill of $3.3 million compared to the estimated fair values included in the 2017 Form 10-K.

(2) During the Current Period, the Company obtained additional information related to property and equipment which led to a decrease of $1.6 million and a corresponding increase in goodwill of $1.6 million compared to the estimated fair values included in the 2017 Form 10-K.

Resource Water Acquisition

Schedule Of consideration transferred and the estimated fair value of identified assets acquired and liabilities

Purchase price allocation	Amount
Consideration  transferred	(in thousands)
Cash paid	$	6,586
Class A Common Stock (156,909 shares)		2,380
Total consideration transferred		8,966
Less: identifiable assets acquired and liabilities assumed
Working capital		1,189
Fixed assets		3,485
Customer relationship intangible assets		1,933
Other intangible assets		465
Total identifiable net assets acquired		7,072
Goodwill		1,894
Fair value allocated to net assets acquired	$	8,966

GRR Acquisition

Schedule Of consideration transferred and the estimated fair value of identified assets acquired and liabilities

Purchase price allocation	Amount
Consideration  transferred	(in thousands)
Cash paid	$	53,032
Class A Common Stock (274,998 shares)		5,500
Assumed liabilities		1,106
Total consideration transferred		59,638
Less: identifiable assets acquired and liabilities assumed
Working capital		7,728
Fixed assets		13,225
Customer relationship intangible assets		21,484
Other intangible assets		5,152
Total identifiable net assets acquired		47,589
Goodwill		12,049
Fair value allocated to net assets acquired	$	59,638

Schedule of unaudited consolidated pro forma information

	Pro Forma
	Three months ended June 30,		Six months ended June 30,
	2017		2017
	(unaudited)
	(in thousands)
Revenue	$	303,047	$	532,282
Net loss	$	(9,393)	$	(33,537)
Less: net loss attributable to noncontrolling interests(1)		3,780		13,564
Net loss attributable to Select Energy Services, Inc.(1)	$	(5,613)	$	(19,973)

(1) The allocation of net loss attributable to noncontrolling interests and Select Inc. gives effect to the equity structure as of June 30, 2017 as though the Select 144A Offering, the IPO, the Rockwater Merger, the Resource Water Acquisition and the GRR Acquisition occurred as of January 1, 2017. However, the calculation of pro forma net loss does not give effect to any other pro forma adjustments for the Select 144A Offering or the subsequent IPO.

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EXIT AND DISPOSAL ACTIVITIES (Tables)

6 Months Ended

Jun. 30, 2018

EXIT AND DISPOSAL ACTIVITIES

Summary of exit and disposal activities

			Provision during  the		Usage during the
	Balance as of		six months ended		six months ended		Balance as of
	December 31, 2017		June 30, 2018		June 30, 2018		June 30, 2018
	(in thousands)
Lease obligations and terminations	$	21,350	$	2,807	$	3,465	$	20,692
Reclassification of deferred rent		1,254						1,332
Total	$	22,604					$	22,024

			Provision during  the		Usage during the
	Balance as of		six months ended		six months ended		Balance as of
	December 31, 2016		June 30, 2017		June 30, 2017		June 30, 2017
	(in thousands)
Lease obligations and terminations	$	18,000	$	2,281	$	1,384	$	18,897
Reclassification of deferred rent		1,069						1,254
Total	$	19,069					$	20,151

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INVENTORIES (Tables)

6 Months Ended

Jun. 30, 2018

INVENTORIES

Schedule of inventory

	June 30, 2018		December 31, 2017
	(in thousands)
Raw materials	$	16,161	$	11,462
Finished goods		32,961		29,674
Materials and supplies		2,952		3,462
		52,074		44,598
Inventory reserve		(394)		—
	$	51,680	$	44,598

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PROPERTY AND EQUIPMENT (Tables)

6 Months Ended

Jun. 30, 2018

PROPERTY AND EQUIPMENT

Schedule of property and equipment

	June 30, 2018		December 31, 2017
	(in thousands)
Land	$	14,402	$	15,286
Buildings and leasehold improvements		98,376		99,222
Vehicles and equipment		72,529		70,537
Vehicles and equipment - capital lease		2,628		2,810
Machinery and equipment		715,302		716,420
Machinery and equipment - capital lease		545		544
Computer equipment and software		13,082		12,466
Computer equipment and software - capital lease		356		356
Office furniture and equipment		4,320		4,320
Disposal wells		63,294		67,805
Other		497		497
Construction in progress		78,516		44,732
		1,063,847		1,034,995
Less accumulated depreciation and impairment		(580,102)		(560,886)
Total property and equipment, net	$	483,745	$	474,109

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GOODWILL AND OTHER INTANGIBLE ASSETS (Tables)

6 Months Ended

Jun. 30, 2018

GOODWILL AND OTHER INTANGIBLE ASSETS.

Schedule of changes in the carrying amounts of goodwill by reportable segment

	Water		Oilfield		Wellsite
	Solutions		Chemicals		Services		Total
	(in thousands)
Balance as of December 31, 2016	$	—	$	—	$	12,242	$	12,242
Additions		245,542		15,637		—		261,179
Balance as of December 31, 2017		245,542		15,637		12,242		273,421
Measurement period adjustment(1)		4,282		656		—		4,938
Balance as of June 30, 2018	$	249,824	$	16,293	$	12,242	$	278,359

See Note 3―Acquisitions for additional information.

Summary of components of other intangible assets

	As of June 30, 2018						As of December 31, 2017
	Gross		Accumulated		Net		Gross		Accumulated		Net
	Value		Amortization		Value		Value		Amortization		Value
	(in thousands)						(in thousands)
Customer relationships	$	169,250	$	63,569	$	105,681	$	169,250	$	57,836	$	111,414
Patents and trademarks		33,544		915		32,629		33,544		414		33,130
Other		14,704		4,106		10,598		14,704		3,182		11,522
Total other intangible assets	$	217,498	$	68,590	$	148,908	$	217,498	$	61,432	$	156,066

Summary of future estimated amortization expense for other intangible assets

	Amount
	(in thousands)
Remainder of 2018	$	5,846
2019		11,595
2020		11,301
2021		10,118
2022		9,904
Thereafter		71,428

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DEBT (Tables)

6 Months Ended

Jun. 30, 2018

DEBT

Summary of Company’s leverage ratio

Level	Average Excess Availability	Base Rate Margin	Eurocurrency Rate Margin
I	< 33% of the commitments	1.00%	2.00%
II	< 66.67% of the commitments and ≥ 33.33% of the commitments	0.75%	1.75%
III	≥ 66.67% of the commitments	0.50%	1.50%

Schedule of fee Percentage on unused credit facility

Level	Average Revolver Usage	Unused Line Fee Percentage
I	≥ 50% of the commitments	0.250%
II	< 50% of the commitments	0.375%

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EQUITY-BASED COMPENSATION (Tables)

6 Months Ended

Jun. 30, 2018

Schedule of assumptions used in determining the fair value of certain equity options

	Assumptions
Underlying equity	$	20.50
Strike price	$	20.50 - 30.75
Dividend yield (%)		0.0	%
Risk free rate (%)		2.3	%
Volatility (%)		50.0	%
Expected term (years)		10.0

Schedule of equity option activity and related information

	For the six months ended June 30, 2018
				Weighted-average
		Weighted-average		Remaining Contractual	Aggregate Intrinsic
	Stock Options	Exercise Price		Term (Years)	Value (in thousands) (a)
Beginning balance, outstanding	3,495,935	$	14.12	8.7	$	5,998
Granted	584,846		26.02
Exercised	(37,209)		10.13
Forfeited	(29,626)		16.94
Expired	(38,611)		17.32
Ending balance, outstanding	3,975,335	$	15.85	5.0	$	6,566
Ending balance, exercisable	1,763,150	$	12.06	3.6	$	4,356
Non-vested at end of period	1,073,723	$	19.25

Schedule of percentage of stock settled incentives earned

Stock Price at Vesting Date(1)	Percentage of Target Amount Earned
Less than $20.00	0%
At least $20.00, but less than $25.00	100%
$25.00 or greater	200%

summary of ESPP activity

	For the six months ended June 30, 2018
Cash received for shares issued	$	54
Shares issued		3,986

Restricted Stock

Schedule of restricted stock activity

	For the six months ended June 30, 2018
		Weighted-average
	Restricted Stock Awards	Grant Date Fair Value
Non-vested at December 31, 2017	299,801	$	16.36
Granted	430,595		19.62
Vested	(137,824)		16.36
Forfeited	(18,640)		16.36
Non-vested at June 30, 2018	573,932	$	18.80

Restricted Stock Units

Schedule of restricted stock activity

	For the six months ended June 30, 2018
		Weighted-average
	Restricted Stock Units	Grant Date Fair Value
Non-vested at December 31, 2017	30,360	$	19.88
Granted	—		—
Vested	(27,860)		19.96
Non-vested at June 30, 2018	2,500	$	19.00

Performance share units

Schedule of percentage of target PSUs earned

Return on Assets at Performance Period End Date	Percentage of Target PSUs Earned
Less than 9.6%	0%
9.6%	50%
12%	100%
14.4%	175%

Summary of activity related to the units outstanding

Period Granted	Target Shares Outstanding at Beginning of Period	Target Shares Granted	Target Shares Vested	Target Shares Forfeited	Target Shares Outstanding at End of Period
2018	—	274,106	—	—	274,106
Total	—	274,106	—	—	274,106

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NONCONTROLLING INTERESTS (Tables)

6 Months Ended

Jun. 30, 2018

NONCONTROLLING INTERESTS.

Summary of the effects of changes in noncontrolling interests

	For the six months ended June 30,
	2018		2017
	(in thousands)
Net income (loss) attributable to Select Energy Services, Inc.	$	27,062	$	(8,388)
Transfers from noncontrolling interests:
Decrease in additional paid-in capital as a result of the contribution of proceeds from the IPO to SES Holdings, LLC in exchange for common units		—		(41,128)
Decrease in additional paid-in capital as a result of the contribution of net assets acquired to SES Holdings, LLC in exchange for common units		—		(4,195)
Decrease in additional paid-in capital as a result of stock option exercises		(1)		—
Increase in additional paid-in capital as a result of restricted stock issuance, net of forfeitures		2,195		—
Increase in additional paid-in capital as a result of issuance of common stock due to vesting of restricted stock units		104		—
Increase in additional paid-in capital as a result of the repurchase of common units of SES Holdings, LLC		74		—
Increase in additional paid-in capital as a result of the conversion of Class B to Class A shares		111,803		—
Decrease in additional paid-in capital as a result of the Employee Stock Purchase Plan shares issued		(4)		—
Change to equity from net income (loss) attributable to Select Energy Services, Inc. and transfers from noncontrolling interests	$	141,233	$	(53,711)

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EARNINGS PER SHARE (Tables)

6 Months Ended

Jun. 30, 2018

EARNINGS PER SHARE

Summary of calculation of basic and diluted earnings per share

	Three months ended June 30, 2018								Three months ended June 30, 2017
	Select Energy Services, Inc.		Class A		Class A-2		Class B		Select Energy Services, Inc.		Class A		Class A-1		Class B
Numerator:
Net income (loss)	$	25,023							$	(10,490)
Net (income) loss attributable to noncontrolling interests		(8,060)								6,274
Net income (loss) attributable to Select Energy Services, Inc. — basic		16,963	$	16,963	$	—	$	—		(4,216)	$	(2,184)	$	(2,032)	$	—
Add: Reallocation of net income attributable to noncontrolling interests for the dilutive effect of restricted stock		6		6		—		—		—		—		—		—
Add: Reallocation of net income attributable to noncontrolling interests for the dilutive effect of stock options		22		22		—		—		—		—		—		—
Add: Reallocation of net income attributable to noncontrolling interests for the dilutive effect of ESPP		—		—		—		—		—		—		—		—
Net income (loss) attributable to Select Energy Services, Inc. — diluted	$	16,991	$	16,991	$	—	$	—	$	(4,216)	$	(2,184)	$	(2,032)	$	—
Denominator:
Weighted-average shares of common stock outstanding — basic				71,412,158		—		34,677,182				14,075,052		13,092,308		38,462,541
Dilutive effect of restricted stock				71,969		—		—				—		—		—
Dilutive effect of stock options				261,582		—		—				—		—		—
Dilutive effect of ESPP				99		—		—				—		—		—
Weighted-average shares of common stock outstanding — diluted				71,745,808		—		34,677,182				14,075,052		13,092,308		38,462,541
Earnings (loss) per share:
Basic			$	0.24	$	—	$	—			$	(0.16)	$	(0.16)	$	—
Diluted			$	0.24	$	—	$	—			$	(0.16)	$	(0.16)	$	—

	Six months ended June 30, 2018								Six months ended June 30, 2017
	Select Energy Services, Inc.		Class A		Class A-2		Class B		Select Energy Services, Inc.		Class A		Class A-1		Class B
Numerator:
Net income (loss)	$	41,155							$	(22,770)
Net (income) loss attributable to noncontrolling interests		(14,093)								14,382
Net income (loss) attributable to Select Energy Services, Inc. — basic		27,062	$	25,784	$	1,278	$	—		(8,388)	$	(3,200)	$	(5,188)	$	—
Add: Reallocation of net income attributable to noncontrolling interests for the dilutive effect of restricted stock		17		18		(1)		—		—		—		—		—
Add: Reallocation of net income attributable to noncontrolling interests for the dilutive effect of stock options		49		53		(4)		—		—		—		—		—
Add: Reallocation of net income attributable to noncontrolling interests for the dilutive effect of ESPP		—		—		—		—		—		—		—		—
Net income (loss) attributable to Select Energy Services, Inc. — diluted	$	27,128	$	25,855	$	1,273	$	—	$	(8,388)	$	(3,200)	$	(5,188)	$	—
Denominator:
Weighted-average shares of common stock outstanding — basic				65,270,048		3,235,746		37,488,964				8,999,294		14,587,845		38,462,541
Dilutive effect of restricted stock				118,719		—		—				—		—		—
Dilutive effect of stock options				343,127		—		—				—		—		—
Dilutive effect of ESPP				83		—		—				—		—		—
Weighted-average shares of common stock outstanding — diluted				65,731,977		3,235,746		37,488,964				8,999,294		14,587,845		38,462,541
Earnings (loss) per share:
Basic			$	0.40	$	0.40	$	—			$	(0.36)	$	(0.36)	$	—
Diluted			$	0.39	$	0.39	$	—			$	(0.36)	$	(0.36)	$	—

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SEGMENT INFORMATION (Tables)

6 Months Ended

Jun. 30, 2018

SEGMENT INFORMATION

Summary of financial information by segment

	For the three months ended June 30, 2018
			Income (loss)		Depreciation and		Capital
	Revenue		before taxes		Amortization		Expenditures
	(in thousands)
Water solutions	$	273,788	$	32,997	$	21,599	$	37,875
Oilfield chemicals		64,842		1,031		2,823		3,424
Wellsite services		55,400		1,983		6,023		4,520
Eliminations		(783)		—		—		—
Income from operations				36,011
Corporate		—		(11,216)		807		—
Interest expense, net		—		(1,342)		—		—
Other income, net		—		1,720		—		—
	$	393,247	$	25,173	$	31,252	$	45,819

	For the three months ended June 30, 2017
			Income (loss)		Depreciation and		Capital
	Revenue		before taxes		Amortization		Expenditures
	(in thousands)
Water solutions	$	107,738	$	3,479	$	18,642	$	23,058
Oilfield chemicals		—		—		—		—
Wellsite services		26,922		(799)		3,878		8,010
Eliminations		(211)		(1)		—		—
Income from operations				2,679
Corporate		—		(14,588)		491		—
Interest expense, net		—		(671)		—		—
Other income, net		—		1,952		—		—
	$	134,449	$	(10,628)	$	23,011	$	31,068

	For the six months ended June 30, 2018
			Income (loss)		Depreciation and		Capital
	Revenue		before taxes		Amortization		Expenditures
	(in thousands)
Water solutions	$	531,320	$	61,200	$	42,842	$	61,769
Oilfield chemicals		128,472		1,962		5,738		5,679
Wellsite services		111,122		1,278		12,747		9,477
Eliminations		(1,272)		—		—		—
Income from operations				64,440
Corporate		—		(21,042)		1,348		—
Interest expense, net		—		(2,493)		—		—
Other income, net		—		862		—		—
	$	769,642	$	41,767	$	62,675	$	76,925

	For the six months ended June 30, 2017
			Income (loss)		Depreciation and		Capital
	Revenue		before taxes		Amortization		Expenditures
	(in thousands)
Water solutions	$	186,503	$	(4,192)	$	36,190	$	35,013
Oilfield chemicals		—		—		—		—
Wellsite services		48,732		(3,451)		7,534		10,065
Eliminations		(861)		—		—		—
Loss from operations				(7,643)
Corporate		—		(16,774)		937		—
Interest expense, net		—		(1,401)		—		—
Other income, net		—		3,016		—		—
	$	234,374	$	(22,802)	$	44,661	$	45,078

Total assets by segment as of June 30, 2018 and December 31, 2017 is as follows:

	As of		As of
	June 30, 2018		December 31, 2017
	(in thousands)
Water solutions	$	1,079,348	$	994,159
Oilfield chemicals		180,999		186,333
Wellsite services		143,582		151,272
Corporate		29,813		24,604
	$	1,433,742	$	1,356,368

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BUSINESS AND BASIS OF PRESENTATION (Details)							2 Months Ended	6 Months Ended
	Jan. 12, 2018 shares	Nov. 01, 2017 USD ($) shares	May 10, 2017 USD ($) $ / shares shares	May 05, 2017 USD ($)	Apr. 26, 2017 $ / shares shares	Dec. 20, 2016 USD ($) $ / shares shares	May 31, 2017 USD ($)	Jun. 30, 2018 USD ($) segment $ / shares shares	Jun. 30, 2017 USD ($) shares	May 14, 2018 shares	Dec. 31, 2017 $ / shares shares	Jun. 13, 2017 shares	Dec. 31, 2016 shares
Share price | $ / shares								$ 20.50
Net proceeds from the IPO | $							$ 128,500,000	$ 431,000
Payments on long-term debt | $			$ 34,000,000					20,000,000	$ 34,000,000
Settlement of phantom units | $				$ 7,800,000
Number of tax receivable agreements | $								2
Equity method investment | $								$ 0
Number of operating segments | segment								3
Number of reportable segments | segment								3
Fair value of cost method investee | $								$ 500,000
Impairment of investment | $								$ 2,000,000
Revolving line of credit
Maximum borrowing capacity | $		$ 300,000,000				$ 300,000,000
Predecessor
Ratio						10.3583
Common units issued						16,100,000
Class A-1 Common Stock
Par value | $ / shares						$ 0.01
Conversion rate per share												1
Class A-1 Common Stock | Private Placement
Shares issued						16,100,000
Share price | $ / shares						$ 20.00
Conversion rate per share													1
Class A Common Stock
Shares issued								27,860	10,005,000
Par value | $ / shares								$ 0.01			$ 0.01
Common stock issued								77,298,660			59,182,176
Number of shares outstanding								77,298,660			59,182,176
Class A Common Stock | IPO
Shares issued					8,700,000
Share price | $ / shares					$ 14.00
Class A Common Stock | Over-allotment option
Shares issued			1,305,000
Share price | $ / shares			$ 14.00
Class A-2 Common Stock
Par value | $ / shares								$ 0.01			$ 0.01
Common stock issued								0			6,731,845
Number of shares outstanding								0			6,731,845
Class B Common Stock
Par value | $ / shares								$ 0.01			$ 0.01
Common stock issued								29,383,320			40,331,989
Number of shares outstanding								29,383,320			40,331,989
Legacy Owner Holdco | Class A Common Stock
Common stock issued										9,948,669
Legacy Owner Holdco | Class B Common Stock | Private Placement
Common units issued						38,462,541
Contributing Legacy Owners | Class A Common Stock | Predecessor
Common units issued						3,802,972
Common stock issued						3,802,972
SES Holdings | Class A Common Stock
Common units exchanged										10,948,669
Rockwater Merger | Class A Common Stock
Shares issued		25,900,000
Number of shares resold		25,914,260
Rockwater Merger | Class A-2 Common Stock
Shares issued		6,700,000
Number of shares resold	6,653,777	6,731,845
Rockwater Merger | Class B Common Stock
Shares issued		4,400,000
Number of shares resold		4,356,477
Rockwater Merger | SES Holdings
Common units issued		37,300,000
Number of shares resold		4,356,477

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SIGNIFICANT ACCOUNTING POLICIES - Property and Equipment (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		6 Months Ended		12 Months Ended
	Jan. 01, 2018	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
Balance at beginning of Current Period	$ 1,846			$ 1,846
Accretion expense, included in depreciation and amortization expense				97
Change in estimate				386
Divestitures				(508)
Balance at end of Current Period		$ 1,821		1,821		$ 1,846
PROPERTY AND EQUIPMENT
Reduction in depreciation and amortization expense		(807)	$ (491)	(1,348)	$ (937)
Net income		16,963	(4,216)	27,062	(8,388)
Minimum
PROPERTY AND EQUIPMENT
Market value of stock held by non-affiliates		700,000		700,000
Class A Common Stock
PROPERTY AND EQUIPMENT
Net income		16,963	$ (2,184)	25,784	$ (3,200)
Change in depreciable lives of property and equipment
PROPERTY AND EQUIPMENT
Reduction in depreciation and amortization expense		4,800		9,500
Net income		$ 4,600		$ 9,300
Basic & Diluted		$ 0.04		$ 0.09
Change in depreciable lives of property and equipment | Vehicles and equipment
PROPERTY AND EQUIPMENT
Estimated useful lives of the assets	8 years 1 month 6 days					6 years
Change in depreciable lives of property and equipment | Machinery and equipment
PROPERTY AND EQUIPMENT
Estimated useful lives of the assets	6 years 10 months 24 days					5 years 6 months

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ACQUISITIONS - Rockwater Merger (Details) - USD ($) $ in Thousands			3 Months Ended		6 Months Ended
	Jan. 12, 2018	Nov. 01, 2017	Jun. 30, 2018	Dec. 31, 2017	Jun. 30, 2018	Dec. 31, 2016
Less: identified assets acquired and liabilities assumed
Goodwill			$ 278,359	$ 273,421	$ 278,359	$ 12,242
SES Holdings
Business Acquisition [Line Items]
Gain on remeasurement of investment				1,200
Water Solutions
Less: identified assets acquired and liabilities assumed
Goodwill			249,824	245,542	249,824
Oilfield Chemicals
Less: identified assets acquired and liabilities assumed
Goodwill			16,293	$ 15,637	16,293
Rockwater Merger
Business Acquisition [Line Items]
Transaction-related costs			$ 1,700		$ 3,700
Fair value accounts receivable		$ 196,900
Accounts receivable gross contractual amount		199,100
Uncollectible amount		2,200
Consideration transferred
Fair value of previously held interest in Rockwater		2,310
Fair value of Rockwater share-based awards attributed to pre-acquisition service		12,529
Total consideration transferred		620,201
Less: identified assets acquired and liabilities assumed
Working capital		143,571
Property and equipment		183,975
Other long-term assets		62
Deferred tax liabilities		(408)
Long-term debt		(80,555)
Other long-term liabilities		(2,650)
Total identifiable net assets acquired		368,027
Goodwill		252,174
Fair value allocated to net assets acquired		620,201
Decrease in working capital		3,300
Increase in goodwill		3,300
Decrease in Property and equipment		1,600
Increase in goodwill		$ 1,600
Rockwater Merger | SES Holdings
Less: identified assets acquired and liabilities assumed
Shares issued in Merger Agreement		4,356,477
Rockwater Merger | Customer relationships
Less: identified assets acquired and liabilities assumed
Intangible assets		$ 89,007
Rockwater Merger | Trademarks and patents
Less: identified assets acquired and liabilities assumed
Intangible assets		31,215
Rockwater Merger | Noncompete agreements
Less: identified assets acquired and liabilities assumed
Intangible assets		3,810
Rockwater Merger | Water Solutions
Less: identified assets acquired and liabilities assumed
Goodwill		235,900
Rockwater Merger | Oilfield Chemicals
Less: identified assets acquired and liabilities assumed
Goodwill		16,300
Class A Common Stock | Rockwater Merger
Consideration transferred
Common stock issued		$ 423,957
Less: identified assets acquired and liabilities assumed
Shares issued in Merger Agreement		25,914,260
Class A-2 Common Stock | Rockwater Merger
Consideration transferred
Common stock issued		$ 110,133
Less: identified assets acquired and liabilities assumed
Shares issued in Merger Agreement	6,653,777	6,731,845
Class B Common Stock | Rockwater Merger
Consideration transferred
Common stock issued		$ 71,272
Less: identified assets acquired and liabilities assumed
Shares issued in Merger Agreement		4,356,477

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ACQUISITIONS - Resource Water Acquisition (Details) - USD ($) $ / shares in Units, $ in Thousands	Sep. 15, 2017	Jun. 30, 2018	Dec. 31, 2017	Dec. 31, 2016
ACQUISITION
Goodwill		$ 278,359	$ 273,421	$ 12,242
Resource Water Acquisition
ACQUISITION
Miles of layflat hose	24
Total consideration paid	$ 8,966
Cash paid	$ 6,586
Class A Common stock issued, Share Price	$ 15.17
Cash on hand	$ 6,600
Goodwill	1,894
Resource Water Acquisition | Class A Common Stock
ACQUISITION
Common stock issued	$ 2,380

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ACQUISITIONS - Resource Water Acquisition - Purchase price allocation (Details) - USD ($) $ in Thousands	Sep. 15, 2017	Jun. 30, 2018	Dec. 31, 2017	Dec. 31, 2016
Less: identified assets acquired and liabilities assumed
Goodwill		$ 278,359	$ 273,421	$ 12,242
Resource Water Acquisition
Consideration transferred
Cash paid	$ 6,586
Total consideration transferred	8,966
Less: identified assets acquired and liabilities assumed
Working capital	1,189
Fixed assets	3,485
Total identifiable net assets acquired	7,072
Goodwill	1,894
Fair value allocated to net assets acquired	8,966
Resource Water Acquisition | Class A Common Stock
Consideration transferred
Common stock issued	$ 2,380
Less: identified assets acquired and liabilities assumed
Shares issued in Merger Agreement	156,909
Resource Water Acquisition | Customer relationships
Less: identified assets acquired and liabilities assumed
Intangible assets	$ 1,933
Resource Water Acquisition | Other
Less: identified assets acquired and liabilities assumed
Intangible assets	$ 465

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ACQUISITIONS - GRR Acquisition (Details) - USD ($) $ / shares in Units, $ in Thousands		6 Months Ended
	Mar. 10, 2017	Jun. 30, 2018	Dec. 31, 2017	Dec. 31, 2016
ACQUISITION
Goodwill		$ 278,359	$ 273,421	$ 12,242
GRR Acquisition
ACQUISITION
Miles of layflat hose	1,200
Cash paid	$ 53,032
Class A Common Stock (274,998 shares)	5,500
Total consideration paid	59,638
Goodwill	$ 12,049
Class A Common stock issued, Share Price	$ 20.00
Cash on hand	$ 19,000
Proceeds from credit facility	$ 34,000
Transaction cost		$ 1,000

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ACQUISITIONS - GRR Acquisition - Purchase price allocation (Details) - USD ($) $ in Thousands	Mar. 10, 2017	Jun. 30, 2018	Dec. 31, 2017	Dec. 31, 2016
Less: identified assets acquired and liabilities assumed
Goodwill		$ 278,359	$ 273,421	$ 12,242
GRR Acquisition
Consideration transferred
Cash paid	$ 53,032
Class A Common Stock (274,998 shares)	5,500
Assumed liabilities	1,106
Total consideration transferred	59,638
Less: identified assets acquired and liabilities assumed
Working capital	7,728
Fixed assets	13,225
Total identifiable net assets acquired	47,589
Goodwill	12,049
Fair value allocated to net assets acquired	$ 59,638
Shares issued in Merger Agreement	274,998
GRR Acquisition | Customer relationships
Less: identified assets acquired and liabilities assumed
Intangible assets	$ 21,484
GRR Acquisition | Other
Less: identified assets acquired and liabilities assumed
Intangible assets	$ 5,152

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ACQUISITIONS - Proforma (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		4 Months Ended	6 Months Ended
	Mar. 31, 2017	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
ACQUISITION
Revenue		$ 393,247	$ 134,449		$ 769,642	$ 234,374
Net income		$ 16,963	(4,216)		$ 27,062	(8,388)
GRR Acquisition
ACQUISITION
Revenue				$ 11,100
Net income	$ 1,000			$ 1,700
Pro forma information
Revenue			303,047			532,282
Net loss			(9,393)			(33,537)
Less: net loss attributable to noncontrolling interests			3,780			13,564
Net loss attributable to Select Energy Services, Inc.			$ (5,613)			$ (19,973)

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ACQUISITIONS - Asset Acquisitions (Details) - USD ($) $ in Thousands	Jun. 21, 2017	May 30, 2017	Jun. 30, 2018	Dec. 31, 2017	Dec. 31, 2016
ACQUISITION
Goodwill			$ 278,359	$ 273,421	$ 12,242
Data Automated Waters Systems, LLC
ACQUISITION
Total consideration paid		$ 4,000
Cash paid		2,000
Fixed assets		$ 1,800
Data Automated Waters Systems, LLC | Class A Common Stock
ACQUISITION
Class A common stock issued		128,370
Class A Common Stock (274,998 shares)		$ 2,000
Data Automated Waters Systems, LLC | Patents
ACQUISITION
Intangible assets		1,900
Data Automated Waters Systems, LLC | Software
ACQUISITION
Intangible assets		$ 300
Tex-Star Water Services, LLC
ACQUISITION
Cash paid	$ 4,200

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EXIT AND DISPOSAL ACTIVITIES (Details) $ in Thousands	6 Months Ended		12 Months Ended
	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)	Dec. 31, 2016 USD ($) item	Dec. 31, 2017 USD ($)
Exit and disposal activities
Number of facilities closed | item			15
Charges related to exit and disposal activities	$ 3,100	$ 2,300
Amount reclassed to accrued lease obligations		200
Accrued expenses and other current liabilities	96,409			$ 81,112
Restructuring Reserve [Roll Forward]
Restructuring Reserve, Beginning Balance	22,604	19,069
Restructuring Reserve, Ending Balance	22,024	20,151	$ 19,069
Accrued Liabilities
Exit and disposal activities
Accrued expenses and other current liabilities	2,800
Lease obligations and terminations
Restructuring Reserve [Roll Forward]
Restructuring Reserve, Beginning Balance	21,350	18,000
Provision for Restructuring	2,807	2,281
Payments for Restructuring	3,465	1,384
Restructuring Reserve, Ending Balance	20,692	18,897	18,000
Reclassifications of deferred rent
Restructuring Reserve [Roll Forward]
Restructuring Reserve, Beginning Balance	1,254	1,069
Restructuring Reserve, Ending Balance	$ 1,332	$ 1,254	$ 1,069

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INVENTORIES (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2018	Dec. 31, 2017	Jun. 30, 2017
Significant components of inventory
Raw materials	$ 16,161	$ 16,161	$ 11,462
Finished goods	32,961	32,961	29,674
Materials and supplies	2,952	2,952	3,462
Inventory gross	52,074	52,074	44,598
Inventory reserve	(394)	(394)		$ 0
Inventory net	51,680	51,680	$ 44,598
Inventory Write-down	$ 100	$ 400

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PROPERTY AND EQUIPMENT (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Property and equipment
Property and equipment	$ 1,063,847		$ 1,063,847		$ 1,034,995
Accumulated depreciation	(580,102)		(580,102)		(560,886)
Property and equipment, net	483,745		483,745		474,109
Write off of property and equipment			2,282
Depreciation	27,900	$ 20,300	$ 55,400	$ 39,900
Leases expiry period			5 years
Capital lease obligations
Property and equipment
Depreciation	300		$ 700
Capital lease obligations		$ 0		$ 0
Land
Property and equipment
Property and equipment	14,402		14,402		15,286
Buildings and leasehold improvements
Property and equipment
Property and equipment	98,376		98,376		99,222
Vehicles and equipment
Property and equipment
Property and equipment	72,529		72,529		70,537
Vehicles and equipment | Capital lease obligations
Property and equipment
Property and equipment	2,628		2,628		2,810
Machinery and equipment
Property and equipment
Property and equipment	715,302		715,302		716,420
Machinery and equipment | Capital lease obligations
Property and equipment
Property and equipment	545		545		544
Computer equipment and software
Property and equipment
Property and equipment	13,082		13,082		12,466
Computer equipment and software | Capital lease obligations
Property and equipment
Property and equipment	356		356		356
Office furniture and equipment
Property and equipment
Property and equipment	4,320		4,320		4,320
Disposal wells
Property and equipment
Property and equipment	63,294		63,294		67,805
Other
Property and equipment
Property and equipment	497		497		497
Construction in progress
Property and equipment
Property and equipment	78,516		$ 78,516		$ 44,732
Water Solutions
Property and equipment
Write off of property and equipment	$ 2,300

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GOODWILL AND OTHER INTANGIBLE ASSETS - GOODWILL (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2018	Dec. 31, 2017
Goodwill
Balance at the beginning of the period	$ 273,421	$ 12,242
Additions		261,179
Measurement period adjustment	4,938
Balance at the end of the period	278,359	273,421
Water Solutions
Goodwill
Balance at the beginning of the period	245,542
Additions		245,542
Measurement period adjustment	4,282
Balance at the end of the period	249,824	245,542
Oilfield Chemicals
Goodwill
Balance at the beginning of the period	15,637
Additions		15,637
Measurement period adjustment	656
Balance at the end of the period	16,293	15,637
Wellsite Services
Goodwill
Balance at the beginning of the period	12,242	12,242
Balance at the end of the period	$ 12,242	$ 12,242

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GOODWILL AND OTHER INTANGIBLE ASSETS - OTHER INTANGIBLE ASSETS (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Other intangible assets
Gross Value	$ 217,498		$ 217,498		$ 217,498
Accumulated Amortization	68,590		68,590		61,432
Net Value	148,908		148,908		156,066
Amortization expense	3,300	$ 2,600	7,200	$ 4,800
Annual amortization of intangible assets
Remainder of 2018	5,846		5,846
2019	11,595		11,595
2020	11,301		11,301
2021	10,118		10,118
2022	9,904		9,904
Thereafter	71,428		71,428
Water rights
Other intangible assets
Intangible assets	5,300		5,300		5,300
Trademarks
Other intangible assets
Intangible assets	23,400		23,400		23,400
Customer relationships
Other intangible assets
Gross Value	169,250		169,250		169,250
Accumulated Amortization	63,569		63,569		57,836
Net Value	105,681		105,681		111,414
Trademarks and patents
Other intangible assets
Gross Value	33,544		33,544		33,544
Accumulated Amortization	915		915		414
Net Value	32,629		32,629		33,130
Other
Other intangible assets
Gross Value	14,704		14,704		14,704
Accumulated Amortization	4,106		4,106		3,182
Net Value	$ 10,598		$ 10,598		$ 11,522

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DEBT (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
	Nov. 01, 2017	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017	Dec. 20, 2016
DEBT
Amortization of debt issuance costs		$ 200	$ 300	$ 344	$ 618
Average excess availability, less than 33% of the commitments | Base Rate Advances
DEBT
Variable interest rate (as a percent)		1.00%		1.00%
Average excess availability, less than 33% of the commitments | LIBOR
DEBT
Variable interest rate (as a percent)		2.00%		2.00%
Average excess availability, less than 66.67% of the commitments and more than or equal to 33.33% of the commitments | Base Rate Advances
DEBT
Variable interest rate (as a percent)		0.75%		0.75%
Average excess availability, less than 66.67% of the commitments and more than or equal to 33.33% of the commitments | LIBOR
DEBT
Variable interest rate (as a percent)		1.75%		1.75%
Average excess availability, more than or equal to 66.67% of the commitments | Base Rate Advances
DEBT
Variable interest rate (as a percent)		0.50%		0.50%
Average excess availability, more than or equal to 66.67% of the commitments | LIBOR
DEBT
Variable interest rate (as a percent)		1.50%		1.50%
Average excess availability more than or equal to fifty percent
DEBT
Unused line fee (as a percent)				0.25%
Average excess availability less than fifty percent
DEBT
Unused line fee (as a percent)				0.375%
Eligible unbilled receivables
DEBT
Borrowing base (as a percent)	75.00%
Letter of credit
DEBT
Amount outstanding		$ 80,000		$ 80,000		$ 75,000
Revolving line of credit
DEBT
Maximum borrowing capacity	$ 300,000						$ 300,000
Revolving line of credit | Letter of credit
DEBT
Maximum borrowing capacity		$ 286,900		$ 286,900		$ 262,100
Senior secured credit facility
DEBT
Additional borrowing capacity	$ 150,000
Time frame for increasing borrowing capacity	3 years
Percentage of borrowing base allowed	35.00%
Margin (as a percent)	2.00%
Weighted average interest rate (as a percent)		3.966%		3.966%		3.319%
Reduction in borrowing capacity		$ 18,300		$ 18,300		$ 19,800
Unused portion of available borrowing		188,600		188,600
Debt issuance costs		$ 3,000		$ 3,000		$ 3,300
Senior secured credit facility | Minimum
DEBT
Percentage of borrowing base allowed	30.00%
Variable interest rate (as a percent)		1.50%		1.50%
Senior secured credit facility | Maximum
DEBT
Variable interest rate (as a percent)		2.00%		2.00%
Senior secured credit facility | Base Rate Advances | Minimum
DEBT
Margin (as a percent)	0.50%
Senior secured credit facility | Base Rate Advances | Maximum
DEBT
Margin (as a percent)	1.00%
Senior secured credit facility | LIBOR
DEBT
Margin (as a percent)	1.00%
Senior secured credit facility | LIBOR | Minimum
DEBT
Margin (as a percent)	1.50%
Senior secured credit facility | LIBOR | Maximum
DEBT
Margin (as a percent)	2.00%
Senior secured credit facility | Federal Funds Rate
DEBT
Margin (as a percent)	0.50%
Senior secured credit facility | Eligible billed receivables
DEBT
Borrowing base (as a percent)	85.00%
Senior secured credit facility | Eligible inventory
DEBT
Borrowing base (as a percent)	70.00%
Senior secured credit facility | Net recovery percentage
DEBT
Borrowing base (as a percent)	85.00%
Senior secured credit facility | Criteria for distributions, scenario one
DEBT
Lookback period	30 days
Percentage outstanding	25.00%
Base amount	$ 37,500
Senior secured credit facility | Criteria for distributions, scenario two
DEBT
Lookback period	30 days
Percentage outstanding	20.00%
Base amount	$ 30,000
Fixed charge coverage ratio	1.00%
Senior secured credit facility | Coverage Ratio Criteria
DEBT
Lookback period	60 days
Percentage outstanding	10.00%
Base amount	$ 15,000
Fixed charge coverage ratio	1.00%
Senior secured credit facility | Letter of credit
DEBT
Maximum borrowing capacity	$ 40,000
Senior secured credit facility | Swingline loan
DEBT
Maximum borrowing capacity	$ 30,000
Previous Credit Facility
DEBT
Maximum borrowing capacity							$ 100,000

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COMMITMENTS AND CONTINGENCIES (Details)	6 Months Ended
	Jun. 30, 2018
COMMITMENTS AND CONTINGENCIES.
Percentage of vehicles in which certain employees at some of the facilities altered emissions controls systems	4.00%

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EQUITY-BASED COMPENSATION (Details) - $ / shares	6 Months Ended
	Jun. 30, 2018	May 10, 2017	Apr. 26, 2017
EQUITY-BASED COMPENSATION
Share Price	$ 20.50
offering period	3 years
Class A Common Stock | Over-allotment option
EQUITY-BASED COMPENSATION
Share Price		$ 14.00
Class A Common Stock | IPO
EQUITY-BASED COMPENSATION
Share Price			$ 14.00
2016 plan | Maximum
EQUITY-BASED COMPENSATION
Equity options term	10 years
2016 plan | Class A Common Stock
EQUITY-BASED COMPENSATION
Maximum number of shares	5,400,400
Rockwater Equity Plan | Class A Common Stock
EQUITY-BASED COMPENSATION
Maximum number of shares	1,011,087
Substitute Awards | 2016 plan | Class A Common Stock
EQUITY-BASED COMPENSATION
Maximum number of shares	2,879,112

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EQUITY-BASED COMPENSATION - Assumptions (Details)	6 Months Ended
	Jun. 30, 2018 $ / shares shares
EQUITY-BASED COMPENSATION
Weighted-average grant date fair value of equity options granted	$ 8.98
Assumptions for equity options granted:
Underlying Equity	$ 20.50
Dividend Yield (%)	0.00%
Risk free rate(%)	2.30%
Volatility (%)	50.00%
Expected Term (Years)	10 years
Vested (in shares) | shares	37,209
Minimum
Assumptions for equity options granted:
Strike Price	$ 20.50
Maximum
Assumptions for equity options granted:
Strike Price	$ 30.75

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EQUITY-BASED COMPENSATION - Equity Options Changed During Period (Details) - USD ($) $ / shares in Units, $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2018	Dec. 31, 2017
Equity Options
Beginning balance (in shares)	3,495,935
Granted (in shares)	584,846
Vested (in shares)	(37,209)
Forfeited (in shares)	(29,626)
Expired (in shares)	38,611
Ending balance (in shares)	3,975,335	3,495,935
Ending balance, exercisable (in shares)	1,763,150
Non-vested at end of period (in shares)	1,073,723
Weighted-average Exercise Price
Beginning balance (in dollars per share)	$ 14.12
Granted (in dollars per share)	26.02
Vested (in dollars per share)	10.13
Forfeited (in dollars per share)	16.94
Expired (in dollars per share)	17.32
Ending balance (in dollars per share)	15.85	$ 14.12
Ending balance, exercisable	12.06
Non-vested at end of period (in dollar per share)	$ 19.25
Weighted-average Remaining Contractual Term (Years)
Outstanding	5 years	8 years 8 months 12 days
Ending balance, exercisable	3 years 7 months 6 days
Aggregate Intrinsic Value
Beginning balance, outstanding	$ 5,998
Ending balance, outstanding	6,566	$ 5,998
Ending balance, exercisable	$ 4,356

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EQUITY-BASED COMPENSATION - Equity Options (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Jun. 29, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share Price	$ 20.50		$ 20.50
Equity options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share Price					$ 14.53
Compensation expense	$ 1.4	$ 0.5	$ 2.7	$ 1.0
Unrecognized compensation expense	$ 7.5		$ 7.5
Weighted-average period for recognition (in years)			1 year 6 months

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EQUITY-BASED COMPENSATION - Restricted stock (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
EQUITY-BASED COMPENSATION
offering period			3 years
Restricted stock
Ending balance (in shares)	1,073,723		1,073,723
Common Stock
EQUITY-BASED COMPENSATION
Compensation expense	$ 1.2	$ 0.1	$ 2.1	$ 0.2
Unrecognized compensation expense	$ 8.3		$ 8.3
Weighted-average remaining life			2 years 1 month 6 days
Common Stock | Minimum
EQUITY-BASED COMPENSATION
offering period			1 year
Common Stock | Maximum
EQUITY-BASED COMPENSATION
offering period			3 years
Restricted Stock
Restricted stock
Beginning balance (in shares)			299,801
Granted (in shares)			430,595
Vested (in shares)			(137,824)
Forfeited (in shares)			(18,640)
Ending balance (in shares)	573,932		573,932
Grant Date Fair Value
Beginning balance (in dollars per share)			$ 16.36
Granted (in dollars per share)			19.62
Vested (in dollars per share)			16.36
Forfeited			16.36
Ending balance (in dollars per share)	$ 18.80		$ 18.80
Restricted Stock Units
Restricted stock
Beginning balance (in shares)			30,360
Vested (in shares)			(27,860)
Ending balance (in shares)	2,500		2,500
Grant Date Fair Value
Beginning balance (in dollars per share)			$ 19.88
Vested (in dollars per share)			19.96
Ending balance (in dollars per share)	$ 19.00		$ 19.00

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EQUITY-BASED COMPENSATION - Performance share units (Details) - Performance share units $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2018 USD ($)	Jun. 30, 2018 USD ($) item
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	$ 0.4	$ 0.6
Fair value of outstanding shares		4.0
Unrecognized compensation expense	$ 3.4	$ 3.4
Weighted-average remaining life		2 years 6 months
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of times shares issued for each performance share settlement | item		0
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of times shares issued for each performance share settlement | item		1.75
Return on assets Less than 9.6%
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of Target PSUs Earned		0.00%
Return on assets 9.6%
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of Target PSUs Earned		50.00%
Return on assets 12%
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of Target PSUs Earned		100.00%
Return on assets 14.4%
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of Target PSUs Earned		175.00%

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EQUITY-BASED COMPENSATION - Performance share units outstanding (Details)	6 Months Ended
	Jun. 30, 2018 shares
Performance share units
Ending balance (in shares)	1,073,723
Performance share units
Performance share units
Target Shares Granted	274,106
Ending balance (in shares)	274,106
Performance share units | 2018
Performance share units
Target Shares Granted	274,106
Ending balance (in shares)	274,106

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EQUITY-BASED COMPENSATION - Stock-Settled Incentive Awards (Details) - USD ($) $ in Millions			3 Months Ended	6 Months Ended
	Jun. 30, 2018	May 17, 2018	Jun. 30, 2018	Jun. 30, 2018
EQUITY-BASED COMPENSATION
offering period				3 years
Stock-Settled Incentive Awards
EQUITY-BASED COMPENSATION
offering period		2 years
Vesting date				30 days
Stock settled incentive awards granted				$ 3.8
Compensation expense			$ 0.1	0.1
Unrecognized compensation expense	$ 1.4		$ 1.4	$ 1.4
Weighted-average period for recognition (in years)	22 months
Stock-Settled Incentive Awards | Minimum
EQUITY-BASED COMPENSATION
Pay out percentage		0.00%
Stock-Settled Incentive Awards | Maximum
EQUITY-BASED COMPENSATION
Pay out percentage		200.00%
Stock-Settled Incentive Awards | Less than $20.00
EQUITY-BASED COMPENSATION
Percentage of Target Amount Earned				0.00%
Stock-Settled Incentive Awards | At least $20.00, but less than $25.00
EQUITY-BASED COMPENSATION
Percentage of Target Amount Earned				100.00%
Stock-Settled Incentive Awards | $25.00 or greater
EQUITY-BASED COMPENSATION
Percentage of Target Amount Earned				200.00%

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EQUITY-BASED COMPENSATION - Stock-settled incentive awards outstanding (Details)	6 Months Ended
	Jun. 30, 2018 shares
EQUITY-BASED COMPENSATION
Ending balance (in shares)	1,073,723

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EQUITY-BASED COMPENSATION - Employee Stock Purchase Plan (ESPP) (Details)	6 Months Ended
	Jun. 30, 2018 USD ($) shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
offering period	3 years
ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee service period	1 year
offering period	4 years
Issue price (percentage)	95.00%
Maximum annual employees contribution	$ 15,000
Cash received for shares issued	$ 54,000
Shares issued | shares	3,986

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EQUITY-BASED COMPENSATION - Phantom unit awards (Details) - USD ($) $ / shares in Units, $ in Millions			3 Months Ended	6 Months Ended
	May 07, 2017	May 05, 2017	Jun. 30, 2017	Jun. 30, 2017	Jun. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Payments For Settlement Of Phantom Units		$ 7.8
Share price					$ 20.50
Outstanding units					1,073,723
Phantom unit awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Payments For Settlement Of Phantom Units	$ 7.8
Share price	$ 14.00
Cash payment (in dollars per share)	$ 5.53
Compensation expense			$ 7.8	$ 7.8
Outstanding units			0	0	0

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FAIR VALUE MEASUREMENT (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2018	Dec. 31, 2017
FAIR VALUE MEASUREMENT
Transfers into Level3		$ 0	$ 0
Transfers out of Level3		0	$ 0
Impairment of Fixed Assets	$ 2,282	$ 2,282

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RELATED PARTY TRANSACTIONS (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
RELATED PARTY TRANSACTIONS
Sales to related parties	$ 1,200,000	$ 600,000	$ 3,600,000	$ 1,100,000
Purchases from related party vendors	$ 4,200,000	1,700,000	$ 7,500,000	2,900,000
Minimum
RELATED PARTY TRANSACTIONS
Beneficial ownership (as a percent)	5.00%		5.00%
Tax Receivable Agreement | Legacy Owner Holdco and Crestview GP
RELATED PARTY TRANSACTIONS
Percentage of net tax savings for payment to TRA Holders			$ 85
Tax Receivable Agreement | Contributing Legacy Owners
RELATED PARTY TRANSACTIONS
Percentage of net tax savings for payment to TRA Holders			85
Property and equipment
RELATED PARTY TRANSACTIONS
Purchases from related party vendors	$ 1,000,000	500,000	2,600,000	700,000
Inventory and consumables
RELATED PARTY TRANSACTIONS
Purchases from related party vendors			200,000	200,000
Inventory and consumables | Maximum
RELATED PARTY TRANSACTIONS
Purchases from related party vendors		100,000
Rent of certain equipment or other services
RELATED PARTY TRANSACTIONS
Purchases from related party vendors	2,600,000	400,000	3,800,000	800,000
Management, consulting and other services
RELATED PARTY TRANSACTIONS
Purchases from related party vendors	$ 600,000	$ 700,000	$ 900,000	$ 1,200,000

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INCOME TAXES (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
INCOME TAXES
Effective Income tax (as percent)	0.60%	(1.30%)	1.50%	(0.10%)
Statutory tax rate (as a percent)			21.00%		35.00%
Tax expense (benefit)	$ 150	$ (138)	$ 612	$ (32)

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NONCONTROLLING INTERESTS (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Effects of changes in noncontrolling interests on equity
Net income	$ 16,963	$ (4,216)	$ 27,062	$ (8,388)
Transfers from noncontrolling interests:
Decrease in additional paid-in capital as a result of the contribution of proceeds from the IPO to SES Holdings, LLC in exchange for common units				(41,128)
Decrease in additional paid-in capital as a result of the contribution of net assets acquired to SES Holdings, LLC in exchange for common units				(4,195)
Decrease in additional paid-in capital as a result of stock option exercises			(1)
Increase in additional paid-in capital as a result of restricted stock issuance			2,195
Increase in additional paid-in capital as a result of issuance of common stock due to vesting of restricted stock units			104
Increase in additional paid-in capital as a result of the repurchase of common units of SES Holdings, LLC			74
Increase in additional paid-in capital as a result of the conversion of Class B to Class A shares			111,803
Decrease in additional paid-in capital as a result of the Employee Stock Purchase Plan shares issued			(4)
Change to equity from net income (loss) attributable to Select Energy Services, Inc. and transfers from noncontrolling interests			$ 141,233	$ (53,711)

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EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Calculation of basic and diluted earnings per share:
Antidilutive shares	1,834,105		1,848,482
Net income (loss)	$ 25,023	$ (10,490)	$ 41,155	$ (22,770)
Net income (loss) attributable to noncontrolling interests	(8,060)	6,274	(14,093)	14,382
Net income (loss) attributable to Select Energy Services, Inc.	16,963	(4,216)	27,062	(8,388)
Add: Reallocation of net income attributable to noncontrolling interests for the dilutive effect of restricted stock	6		17
Add: Reallocation of net income attributable to noncontrolling interests for the dilutive effect of stock options	22		49
Net income (loss) attributable to Select Energy Services, Inc. — diluted	16,991	(4,216)	27,128	(8,388)
Class A Common Stock
Calculation of basic and diluted earnings per share:
Net income (loss) attributable to Select Energy Services, Inc.	16,963	(2,184)	25,784	(3,200)
Add: Reallocation of net income attributable to noncontrolling interests for the dilutive effect of restricted stock	6		18
Add: Reallocation of net income attributable to noncontrolling interests for the dilutive effect of stock options	22		53
Net income (loss) attributable to Select Energy Services, Inc. — diluted	$ 16,991	$ (2,184)	$ 25,855	$ (3,200)
Weighted-average shares of common stock outstanding — basic	71,412,158	14,075,052	65,270,048	8,999,294
Dilutive effect of restricted stock	71,969		118,719
Dilutive effect of stock options	261,582		343,127
Dilutive effect of ESPP	99		83
Weighted-average shares of common stock outstanding — diluted	71,745,808	14,075,052	65,731,977	8,999,294
Earnings (loss) per share, Basic	$ 0.24	$ (0.16)	$ 0.40	$ (0.36)
Earnings (loss) per share, Diluted	$ 0.24	$ (0.16)	$ 0.39	$ (0.36)
Class A-1 Common Stock
Calculation of basic and diluted earnings per share:
Net income (loss) attributable to Select Energy Services, Inc.		$ (2,032)		$ (5,188)
Net income (loss) attributable to Select Energy Services, Inc. — diluted		$ (2,032)		$ (5,188)
Weighted-average shares of common stock outstanding — basic		13,092,308		14,587,845
Weighted-average shares of common stock outstanding — diluted		13,092,308		14,587,845
Earnings (loss) per share, Basic		$ (0.16)		$ (0.36)
Earnings (loss) per share, Diluted		$ (0.16)		$ (0.36)
Class A-2 Common Stock
Calculation of basic and diluted earnings per share:
Net income (loss) attributable to Select Energy Services, Inc.			$ 1,278
Add: Reallocation of net income attributable to noncontrolling interests for the dilutive effect of restricted stock			(1)
Add: Reallocation of net income attributable to noncontrolling interests for the dilutive effect of stock options			(4)
Net income (loss) attributable to Select Energy Services, Inc. — diluted			$ 1,273
Weighted-average shares of common stock outstanding — basic			3,235,746
Weighted-average shares of common stock outstanding — diluted			3,235,746
Earnings (loss) per share, Basic			$ 0.40
Earnings (loss) per share, Diluted			$ 0.39
Class B Common Stock
Calculation of basic and diluted earnings per share:
Weighted-average shares of common stock outstanding — basic	34,677,182	38,462,541	37,488,964	38,462,541
Weighted-average shares of common stock outstanding — diluted	34,677,182	38,462,541	37,488,964	38,462,541

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SEGMENT INFORMATION (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2018 USD ($) segment	Jun. 30, 2017 USD ($)	Dec. 31, 2017 USD ($)
SEGMENT INFORMATION
Number of operating segments | segment			3
Number of reportable segments | segment			3
Assets	$ 1,433,742		$ 1,433,742		$ 1,356,368
Segment information
Revenue	393,247	$ 134,449	769,642	$ 234,374
Income (loss) before taxes	25,173	(10,628)	41,767	(22,802)
Depreciation and Amortization	31,252	23,011	62,675	44,661
Capital Expenditures	45,819	31,068	76,925	45,078
Income (loss) from operations	24,795	(11,909)	43,398	(24,417)
Interest expense, net	(1,342)	(671)	(2,493)	(1,401)
Other income, net	1,720	1,952	862	3,016
Operating segment
Segment information
Income (loss) before taxes				(7,643)
Income (loss) from operations	36,011	2,679	64,440
Operating segment | Water Solutions
SEGMENT INFORMATION
Assets	1,079,348		1,079,348		994,159
Segment information
Revenue	273,788	107,738	531,320	186,503
Income (loss) before taxes	32,997	3,479	61,200	(4,192)
Depreciation and Amortization	21,599	18,642	42,842	36,190
Capital Expenditures	37,875	23,058	61,769	35,013
Operating segment | Oilfield Chemicals
SEGMENT INFORMATION
Assets	180,999		180,999		186,333
Segment information
Revenue	64,842		128,472
Income (loss) before taxes	1,031		1,962
Depreciation and Amortization	2,823		5,738
Capital Expenditures	3,424		5,679
Operating segment | Wellsite Services
SEGMENT INFORMATION
Assets	143,582		143,582		151,272
Segment information
Revenue	55,400	26,922	111,122	48,732
Income (loss) before taxes	1,983	(799)	1,278	(3,451)
Depreciation and Amortization	6,023	3,878	12,747	7,534
Capital Expenditures	4,520	8,010	9,477	10,065
Elimination
Segment information
Revenue	(783)	(211)	(1,272)	(861)
Income (loss) before taxes		(1)
Corporate
SEGMENT INFORMATION
Assets	29,813		29,813		$ 24,604
Segment information
Income (loss) before taxes	(11,216)	(14,588)	(21,042)	(16,774)
Depreciation and Amortization	$ 807	$ 491	$ 1,348	$ 937

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SEGMENT INFORMATION - Total Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Assets	$ 1,433,742	$ 1,356,368
Operating segment | Water Solutions
Segment Reporting Information [Line Items]
Assets	1,079,348	994,159
Operating segment | Oilfield Chemicals
Segment Reporting Information [Line Items]
Assets	180,999	186,333
Operating segment | Wellsite Services
Segment Reporting Information [Line Items]
Assets	143,582	151,272
Corporate
Segment Reporting Information [Line Items]
Assets	$ 29,813	$ 24,604