Transactions With Related Parties	12 Months Ended
Dec. 31, 2016
Related Party Transactions [Abstract]
Transactions with Related Parties	Note 12—Transactions with Related Parties Founder Shares On November 6, 2015, the Company’s Sponsor purchased 11,500,000 shares of Class B Common Stock, the founder shares, from the Company, for an aggregate purchase price of $25,000, or approximately $0.002 per share. In February 2016, the Company’s Sponsor transferred 40,000 founder shares to each of the Company’s then independent directors (together with the Company’s Sponsor, the "initial stockholders") at their original purchase price. On February 24, 2016, the Company effected a stock dividend of approximately 0.125 shares for each outstanding share of Class B Common Stock, resulting in the initial stockholders holding an aggregate of 12,937,000 founder shares. On April 8, 2016, following the expiration of the underwriters' remaining over-allotment option in connection with the Company’s IPO, the Company’s Sponsor forfeited 437,500 founder shares, so that the remaining 12,500,000 founder shares held by the initial stockholders would represent 20% of the Company’s then issued and outstanding shares of common stock. On October 11, 2016, all of the outstanding founder shares were automatically converted into shares of Class A Common Stock on a one-for-one basis in connection with the closing of the Business Combination. The initial stockholders have agreed, subject to limited exceptions, not to transfer, assign or sell any of their shares of Class A Common Stock received upon conversion of their founder shares until the earlier to occur of: (A) one year after the closing of the Business Combination or (B) subsequent to the Business Combination, (x) if the last sale price of the Class A Common Stock equals or exceeds $12.00 per share (as adjusted for stock splits, stock dividends, reorganizations, recapitalizations and the like) for any 20 trading days within any 30 trading day period commencing at least 150 days after the closing of the Business Combination, or (y) the date on which the Company completes a liquidation, merger, stock exchange or other similar transaction that results in all of its stockholders having the right to exchange their shares of common stock for cash, securities or other property. Administrative Support Agreement On February 23, 2016, the Company entered into an administrative support agreement pursuant to which it agreed to pay an affiliate of its Sponsor a total of $10,000 per month for office space, utilities and secretarial and administrative support. The Company paid the affiliate of the Sponsor $70,000 for such services for the nine months ended September 30, 2016. Following the closing of the Business Combination, the Company no longer pays these monthly fees. Private Placement Warrants On February 29, 2016, the Company’s Sponsor purchased 8,000,000 Private Placement Warrants from the Company at a price of $1.50 per whole warrant ($12.0 million in the aggregate) in a private placement that occurred simultaneously with the closing of the Company’s IPO. Each whole Private Placement Warrant is exercisable for one whole share of Class A Common Stock at a price of $11.50 per share. A portion of the purchase price of the Private Placement Warrants was placed in the Company’s trust account along with the proceeds from its IPO. The Private Placement Warrants are non-redeemable and exercisable on a cashless basis so long as they are held by the Company’s Sponsor or its permitted transferees. Related Party Loans On November 6, 2015, the Company’s Sponsor agreed to loan it an aggregate of up to $300,000 to cover expenses related to its IPO pursuant to a promissory note (the "2015 Note"). The 2015 Note was non-interest bearing and payable on the earlier of March 31, 2016 or the completion of the Company’s IPO. On November 10, 2015, the Company borrowed $150,000 under the 2015 Note, and it borrowed the remaining $150,000 under the 2015 Note in February 2016. On February 29, 2016, the full $300,000 balance of the 2015 Note was repaid to the Company’s Sponsor. On August 2, 2016, the Company issued an unsecured, non-interest bearing promissory note to its Sponsor (the “2016 Note”). The Company borrowed $300,000 under the 2016 Note, and repaid the full $300,000 balance upon the closing of the Business Combination on October 11, 2016. Exchange Right On October 11, 2016, following the closing of the Business Combination, the Company issued 844,079 shares of its Class A Common Stock, par value $0.0001 per share, to an accredited investor at the direction of members of CRP affiliated with such investor (the “CRP Members”), in exchange for 844,079 common membership interests in CRP (the “CRP Common Units”) held by certain Centennial Contributors. The exchange was effected in accordance with the Fifth Amended and Restated Limited Liability Company Agreement of CRP, which permits Centennial Contributors of CRP Common Units to exchange their CRP Common Units on a one-for-one basis for shares of Class A Common Stock. Upon the exchange of the CRP Common Units described above, the Company canceled 844,079 shares of its Class C Common Stock, par value $0.0001 per share, held by the Centennial Contributors. Amended and Restated Limited Liability Company Agreement of CRP In connection with the closing of the Business Combination, on October 11, 2016, the Company and the Centennial Contributors entered into CRP’s fifth amended and restated limited liability company agreement (the “A&R LLC Agreement”). The operations of CRP, and the rights and obligations of the holders of CRP Common Units, are set forth in the A&R LLC Agreement. On December 28, 2016 and March 20, 2017, in connection with the Silverback Acquisition, the A&R LLC Agreement was amended by Amendment No. 1 to the A&R LLC Agreement and Amendment No. 2 to the A&R LLC Agreement, respectively (the “CRP Amendments”). Pursuant to the CRP Amendments, the Series B Preferred Units were created, with 104,400 of such Series B Preferred Units issued to the Company, in connection with the contribution of proceeds from the Silverback Acquisition Private Placements. Pursuant to the CRP Amendments, the Series B Preferred Units have limited voting rights and are entitled to participate with the CRP Common Units in any distributions declared in accordance with the A&R LLC Agreement. The Series B Preferred Units will automatically convert to CRP Common Units upon the conversion of the Company’s Series B Preferred Stock. Amended and Restated Registration Rights Agreement In connection with the closing of the Business Combination, on October 11, 2016, the Company entered into an amended and restated registration rights agreement (the “Registration Rights Agreement”) with its Sponsor, certain of its former and current directors, Riverstone Centennial Holdings, L.P. (“Riverstone Centennial”) and the Centennial Contributors, pursuant to which such parties are entitled to certain registration rights relating to (i) shares of the Company’s Class A Common Stock issued to our Sponsor and such former and current directors upon the conversion of their founder shares at the closing of the Business Combination, (ii) the Private Placement Warrants and warrants that may be issued upon conversion of working capital loans (and any shares of Class A Common Stock issuable upon the exercise of such warrants), (iii) the shares of Class A Common Stock that have been or may be issued from time to time to certain members of CRP who own CRP Common Units upon the redemption or exchange by such members of CRP Common Units for shares of Class A Common Stock (the “Centennial Holder Shares”) and (iv) the shares of Class A Common Stock issued to Riverstone Centennial in the Business Combination Private Placement (collectively, the “Registrable Securities”). The holders of a majority of the Registrable Securities (other than the securities identified in clauses (iii) and (iv) of the preceding paragraph) are entitled to make up to three demands, excluding short form demands, that the Company register the resale of such securities, while holders of a majority of the Registrable Securities owned by Riverstone Centennial and its permitted transferees are entitled to five demands, excluding short form demands, that the Company register the resale of such securities. Additionally, the holders of a majority of the Centennial Holder Shares are entitled to demand one underwritten offering if the offering is reasonably expected to result in gross proceeds of more than $50 million. In connection with this Amended and Restated Registration Rights Agreement, the Company filed a Registration Statement on Form S-1 that was declared effective on November 21, 2016. The holders also have certain “piggy-back” registration rights with respect to registration statements and rights to require the Company to register for resale such securities pursuant to Rule 415 under the Securities Act. However, the Registration Rights Agreement provides that the Company will not permit any registration statement filed under the Securities Act with respect to the founder shares and the Private Placement Warrants and the shares of Class A Common Stock underlying such Private Placement Warrants to become effective until termination of the applicable lock-up period, which occurs (i) in the case of the founder shares, on the earlier of (A) October 11, 2017, (B) if the last sale price of the Company’s Class A Common Stock equals or exceeds $12.00 per share (as adjusted for stock splits, stock dividends, reorganizations, recapitalizations and other similar transactions) for any 20 trading days within any 30-trading day period commencing at least 150 days after the Business Combination, or (C) the date on which the Company completes a liquidation, merger, capital stock exchange, reorganization or other similar transaction that results in all of its stockholders having the right to exchange their shares of common stock for cash, securities or other property and (ii) in the case of the Private Placement Warrants and the shares of Class A Common Stock underlying such Private Placement Warrants, November 11, 2016. The Company will bear the expenses incurred in connection with the filing of any such registration statements. Subscription Agreements In connection with the Business Combination, on July 21, 2016, the Company entered into subscription agreements with certain investors pursuant to which such investors purchased, in the aggregate, 20,000,000 shares of Class A Common Stock at the closing of the Business Combination for an aggregate purchase price of $200.0 million. On the same date, the Company entered into a separate subscription agreement with Riverstone Centennial, pursuant to which Riverstone Centennial purchased 81,005,000 shares of Class A Common Stock at the closing of the Business Combination for an aggregate purchase price of approximately $810.0 million. In connection with the Silverback Acquisition, on November 27, 2016 (as amended on December 22, 2016), the Company entered into a subscription agreement with the Riverstone Purchasers, pursuant to which the Riverstone Purchasers agreed to purchase an aggregate of 3,473,590 shares of Class A Common Stock and 104,400 shares of Series B Preferred Stock at the closing for an aggregate purchase price of approximately $430.0 million. In addition, on December 2, 2016, the Company entered into subscription agreements with the other selling stockholders, pursuant to which such selling stockholders agreed to purchase an aggregate of 33,012,380 shares of Class A Common Stock at the closing for an aggregate purchase price of approximately $480.0 million. The Company refers to the subscription agreements entered into by the selling stockholders, including the Riverstone Purchasers, as the “Subscription Agreements.” The shares of Class A Common Stock and Series B Preferred Stock issued pursuant to the Subscription Agreements were not registered under the Securities Act in reliance upon the exemption provided in Section 4(a)(2) of the Securities Act. The Subscription Agreements provide that the Company must register the resale of the shares of Class A Common Stock issued thereunder pursuant to a registration statement that must be filed within 75 calendar days after consummation of the Silverback Acquisition. The Subscription Agreements provide further that the Company must use its commercially reasonable efforts to have the registration statement declared effective as soon as practicable after the filing thereof, but no later than the earlier of (i) the 90th calendar day following the filing thereof and (ii) the 10th business day after the date the Company is notified (orally or in writing, whichever is earlier) by the SEC that such registration statement will not be “reviewed” or will not be subject to further review. Customer and Supplier Relationships NGP Affiliated Companies In May 2016, the Company acquired acreage in close proximity to its operating area in Reeves County, Texas and wellbore only rights in an uncompleted horizontal wellbore for approximately $9.8 million from Caird DB, LLC, an affiliate of NGP. From time to time, the Company obtains services related to its drilling and completion activities from affiliates of NGP. In particular, the Company has paid the following amounts to the following affiliates of NGP for such services: (i) approximately $0.5 million during the year ended December 31, 2016 to Cretic Energy Services, LLC (“Cretic”); and (ii) approximately $3.3 million during the year ended December 31, 2016 to RockPile Energy Services, LLC. On September 8, 2016, Rockpile Energy Services, LLC, was purchased from NGP by an unrelated third party. At December 31, 2016, included in Accounts payable and accrued expenses was $0.2 million due to Cretic. The Company is party to a 15-year gas gathering agreement with PennTex Permian, LLC (“PennTex”), which terminates on April 1, 2029 and is subject to one-year extensions at either party’s election. Under the agreement, PennTex gathers and processes the Company’s gas. PennTex purchases the extracted natural gas liquids from the Company, net of gathering fees and an agreed percentage of the actual proceeds from the sale of the residue natural gas and natural gas liquids. Net payments received from PennTex for the periods from October 11, 2016, through December 31, 2016 (Successor) and January 1, 2016, through October 10, 2016 (Predecessor) and the years ended December 31, 2015 and 2014 were $0.2 million, $1.0 million, $1.2 million and $2.2 million, respectively. In the third quarter of 2016, PennTex sold its assets related to this agreement to an unrelated third party In October 2014, the gas gathering agreement with PennTex was amended to construct an expansion of the gathering system and a receipt point. Please refer to Note 13—Commitments and Contingencies. Riverstone Affiliated Companies From time to time, the Successor obtains services related to its drilling and completion activities from affiliates of Riverstone. In particular, the Successor has paid the following amounts to the following affiliates of Riverstone for such services: (i) approximately $8.2 million during the year ended December 31, 2016 to Liberty Oilfield Services, LLC (“Liberty”); and (ii) approximately $1.4 million during the year ended December 31, 2016 to Permian Tank and Manufacturing, Inc. (“Permian”). At December 31, 2016, included in Accounts payable and accrued expenses was $3.1 million and $0.4 million due to Liberty and Permian, respectively. Other Affiliated Companies Mark G. Papa, our President, Chief Executive Officer and Chairman of the Board, serves as a director and Chairman of the Board of Oil States International, Inc., an energy services company publicly traded on the New York Stock Exchange (“Oil States”). From time to time, the Successor obtains services related to drilling and completion activities from Oil States. In particular, during the fiscal year ended December 31, 2016, the Successor paid approximately $1.2 million to Oil States. At December 31, 2016, included in Accounts payable and accrued expenses was $0.2 million due to Oil States.

Note 12—Transactions with Related Parties

Founder Shares

On November 6, 2015, the Company’s Sponsor purchased 11,500,000 shares of Class B Common Stock, the founder shares, from the Company, for an aggregate purchase price of $25,000, or approximately $0.002 per share. In February 2016, the Company’s Sponsor transferred 40,000 founder shares to each of the Company’s then independent directors (together with the Company’s Sponsor, the "initial stockholders") at their original purchase price. On February 24, 2016, the Company effected a stock dividend of approximately 0.125 shares for each outstanding share of Class B Common Stock, resulting in the initial stockholders holding an aggregate of 12,937,000 founder shares. On April 8, 2016, following the expiration of the underwriters' remaining over-allotment option in connection with the Company’s IPO, the Company’s Sponsor forfeited 437,500 founder shares, so that the remaining 12,500,000 founder shares held by the initial stockholders would represent 20% of the Company’s then issued and outstanding shares of common stock. On October 11, 2016, all of the outstanding founder shares were automatically converted into shares of Class A Common Stock on a one-for-one basis in connection with the closing of the Business Combination.

The initial stockholders have agreed, subject to limited exceptions, not to transfer, assign or sell any of their shares of Class A Common Stock received upon conversion of their founder shares until the earlier to occur of: (A) one year after the closing of the Business Combination or (B) subsequent to the Business Combination, (x) if the last sale price of the Class A Common Stock equals or exceeds $12.00 per share (as adjusted for stock splits, stock dividends, reorganizations, recapitalizations and the like) for any 20 trading days within any 30 trading day period commencing at least 150 days after the closing of the Business Combination, or (y) the date on which the Company completes a liquidation, merger, stock exchange or other similar transaction that results in all of its stockholders having the right to exchange their shares of common stock for cash, securities or other property.

Administrative Support Agreement

On February 23, 2016, the Company entered into an administrative support agreement pursuant to which it agreed to pay an affiliate of its Sponsor a total of $10,000 per month for office space, utilities and secretarial and administrative support. The Company paid the affiliate of the Sponsor $70,000 for such services for the nine months ended September 30, 2016. Following the closing of the Business Combination, the Company no longer pays these monthly fees.

Private Placement Warrants

On February 29, 2016, the Company’s Sponsor purchased 8,000,000 Private Placement Warrants from the Company at a price of $1.50 per whole warrant ($12.0 million in the aggregate) in a private placement that occurred simultaneously with the closing of the Company’s IPO. Each whole Private Placement Warrant is exercisable for one whole share of Class A Common Stock at a price of $11.50 per share. A portion of the purchase price of the Private Placement Warrants was placed in the Company’s trust account along with the proceeds from its IPO. The Private Placement Warrants are non-redeemable and exercisable on a cashless basis so long as they are held by the Company’s Sponsor or its permitted transferees.

Related Party Loans

On November 6, 2015, the Company’s Sponsor agreed to loan it an aggregate of up to $300,000 to cover expenses related to its IPO pursuant to a promissory note (the "2015 Note"). The 2015 Note was non-interest bearing and payable on the earlier of March 31, 2016 or the completion of the Company’s IPO. On November 10, 2015, the Company borrowed $150,000 under the 2015 Note, and it borrowed the remaining $150,000 under the 2015 Note in February 2016. On February 29, 2016, the full $300,000 balance of the 2015 Note was repaid to the Company’s Sponsor.

On August 2, 2016, the Company issued an unsecured, non-interest bearing promissory note to its Sponsor (the “2016 Note”). The Company borrowed $300,000 under the 2016 Note, and repaid the full $300,000 balance upon the closing of the Business Combination on October 11, 2016.

Exchange Right

On October 11, 2016, following the closing of the Business Combination, the Company issued 844,079 shares of its Class A Common Stock, par value $0.0001 per share, to an accredited investor at the direction of members of CRP affiliated with such investor (the “CRP Members”), in exchange for 844,079 common membership interests in CRP (the “CRP Common Units”) held by certain Centennial Contributors. The exchange was effected in accordance with the Fifth Amended and Restated Limited Liability Company Agreement of CRP, which permits Centennial Contributors of CRP Common Units to exchange their CRP Common Units on a one-for-one basis for shares of Class A Common Stock. Upon the exchange of the CRP Common Units described above, the Company canceled 844,079 shares of its Class C Common Stock, par value $0.0001 per share, held by the Centennial Contributors.

Amended and Restated Limited Liability Company Agreement of CRP

In connection with the closing of the Business Combination, on October 11, 2016, the Company and the Centennial Contributors entered into CRP’s fifth amended and restated limited liability company agreement (the “A&R LLC Agreement”). The operations of CRP, and the rights and obligations of the holders of CRP Common Units, are set forth in the A&R LLC Agreement.

On December 28, 2016 and March 20, 2017, in connection with the Silverback Acquisition, the A&R LLC Agreement was amended by Amendment No. 1 to the A&R LLC Agreement and Amendment No. 2 to the A&R LLC Agreement, respectively (the “CRP Amendments”). Pursuant to the CRP Amendments, the Series B Preferred Units were created, with 104,400 of such Series B Preferred Units issued to the Company, in connection with the contribution of proceeds from the Silverback Acquisition Private Placements. Pursuant to the CRP Amendments, the Series B Preferred Units have limited voting rights and are entitled to participate with the CRP Common Units in any distributions declared in accordance with the A&R LLC Agreement. The Series B Preferred Units will automatically convert to CRP Common Units upon the conversion of the Company’s Series B Preferred Stock.

Amended and Restated Registration Rights Agreement

In connection with the closing of the Business Combination, on October 11, 2016, the Company entered into an amended and restated registration rights agreement (the “Registration Rights Agreement”) with its Sponsor, certain of its former and current directors, Riverstone Centennial Holdings, L.P. (“Riverstone Centennial”) and the Centennial Contributors, pursuant to which such parties are entitled to certain registration rights relating to (i) shares of the Company’s Class A Common Stock issued to our Sponsor and such former and current directors upon the conversion of their founder shares at the closing of the Business Combination, (ii) the Private Placement Warrants and warrants that may be issued upon conversion of working capital loans (and any shares of Class A Common Stock issuable upon the exercise of such warrants), (iii) the shares of Class A Common Stock that have been or may be issued from time to time to certain members of CRP who own CRP Common Units upon the redemption or exchange by such members of CRP Common Units for shares of Class A Common Stock (the “Centennial Holder Shares”) and (iv) the shares of Class A Common Stock issued to Riverstone Centennial in the Business Combination Private Placement (collectively, the “Registrable Securities”).

The holders of a majority of the Registrable Securities (other than the securities identified in clauses (iii) and (iv) of the preceding paragraph) are entitled to make up to three demands, excluding short form demands, that the Company register the resale of such securities, while holders of a majority of the Registrable Securities owned by Riverstone Centennial and its permitted transferees are entitled to five demands, excluding short form demands, that the Company register the resale of such securities. Additionally, the holders of a majority of the Centennial Holder Shares are entitled to demand one underwritten offering if the offering is reasonably expected to result in gross proceeds of more than $50 million. In connection with this Amended and Restated Registration Rights Agreement, the Company filed a Registration Statement on Form S-1 that was declared effective on November 21, 2016.

The holders also have certain “piggy-back” registration rights with respect to registration statements and rights to require the Company to register for resale such securities pursuant to Rule 415 under the Securities Act. However, the Registration Rights Agreement provides that the Company will not permit any registration statement filed under the Securities Act with respect to the founder shares and the Private Placement Warrants and the shares of Class A Common Stock underlying such Private Placement Warrants to become effective until termination of the applicable lock-up period, which occurs (i) in the case of the founder shares, on the earlier of (A) October 11, 2017, (B) if the last sale price of the Company’s Class A Common Stock equals or exceeds $12.00 per share (as adjusted for stock splits, stock dividends, reorganizations, recapitalizations and other similar transactions) for any 20 trading days within any 30-trading day period commencing at least 150 days after the Business Combination, or (C) the date on which the Company completes a liquidation, merger, capital stock exchange, reorganization or other similar transaction that results in all of its stockholders having the right to exchange their shares of common stock for cash, securities or other property and (ii) in the case of the Private Placement Warrants and the shares of Class A Common Stock underlying such Private Placement Warrants, November 11, 2016. The Company will bear the expenses incurred in connection with the filing of any such registration statements.

Subscription Agreements

In connection with the Business Combination, on July 21, 2016, the Company entered into subscription agreements with certain investors pursuant to which such investors purchased, in the aggregate, 20,000,000 shares of Class A Common Stock at the closing of the Business Combination for an aggregate purchase price of $200.0 million. On the same date, the Company entered into a separate subscription agreement with Riverstone Centennial, pursuant to which Riverstone Centennial purchased 81,005,000 shares of Class A Common Stock at the closing of the Business Combination for an aggregate purchase price of approximately $810.0 million.

In connection with the Silverback Acquisition, on November 27, 2016 (as amended on December 22, 2016), the Company entered into a subscription agreement with the Riverstone Purchasers, pursuant to which the Riverstone Purchasers agreed to purchase an aggregate of 3,473,590 shares of Class A Common Stock and 104,400 shares of Series B Preferred Stock at the closing for an aggregate purchase price of approximately $430.0 million. In addition, on December 2, 2016, the Company entered into subscription agreements with the other selling stockholders, pursuant to which such selling stockholders agreed to purchase an aggregate of 33,012,380 shares of Class A Common Stock at the closing for an aggregate purchase price of approximately $480.0 million. The Company refers to the subscription agreements entered into by the selling stockholders, including the Riverstone Purchasers, as the “Subscription Agreements.”

The shares of Class A Common Stock and Series B Preferred Stock issued pursuant to the Subscription Agreements were not registered under the Securities Act in reliance upon the exemption provided in Section 4(a)(2) of the Securities Act. The Subscription Agreements provide that the Company must register the resale of the shares of Class A Common Stock issued thereunder pursuant to a registration statement that must be filed within 75 calendar days after consummation of the Silverback Acquisition. The Subscription Agreements provide further that the Company must use its commercially reasonable efforts to have the registration statement declared effective as soon as practicable after the filing thereof, but no later than the earlier of (i) the 90th calendar day following the filing thereof and (ii) the 10th business day after the date the Company is notified (orally or in writing, whichever is earlier) by the SEC that such registration statement will not be “reviewed” or will not be subject to further review.

Customer and Supplier Relationships

NGP Affiliated Companies

In May 2016, the Company acquired acreage in close proximity to its operating area in Reeves County, Texas and wellbore only rights in an uncompleted horizontal wellbore for approximately $9.8 million from Caird DB, LLC, an affiliate of NGP.

From time to time, the Company obtains services related to its drilling and completion activities from affiliates of NGP. In particular, the Company has paid the following amounts to the following affiliates of NGP for such services: (i) approximately $0.5 million during the year ended December 31, 2016 to Cretic Energy Services, LLC (“Cretic”); and (ii) approximately $3.3 million during the year ended December 31, 2016 to RockPile Energy Services, LLC. On September 8, 2016, Rockpile Energy Services, LLC, was purchased from NGP by an unrelated third party. At December 31, 2016, included in Accounts payable and accrued expenses was $0.2 million due to Cretic.

The Company is party to a 15-year gas gathering agreement with PennTex Permian, LLC (“PennTex”), which terminates on April 1, 2029 and is subject to one-year extensions at either party’s election. Under the agreement, PennTex gathers and processes the Company’s gas. PennTex purchases the extracted natural gas liquids from the Company, net of gathering fees and an agreed percentage of the actual proceeds from the sale of the residue natural gas and natural gas liquids. Net payments received from PennTex for the periods from October 11, 2016, through December 31, 2016 (Successor) and January 1, 2016, through October 10, 2016 (Predecessor) and the years ended December 31, 2015 and 2014 were $0.2 million, $1.0 million, $1.2 million and $2.2 million, respectively. In the third quarter of 2016, PennTex sold its assets related to this agreement to an unrelated third party

In October 2014, the gas gathering agreement with PennTex was amended to construct an expansion of the gathering system and a receipt point. Please refer to Note 13—Commitments and Contingencies.

Riverstone Affiliated Companies

From time to time, the Successor obtains services related to its drilling and completion activities from affiliates of Riverstone. In particular, the Successor has paid the following amounts to the following affiliates of Riverstone for such services: (i) approximately $8.2 million during the year ended December 31, 2016 to Liberty Oilfield Services, LLC (“Liberty”); and (ii) approximately $1.4 million during the year ended December 31, 2016 to Permian Tank and Manufacturing, Inc. (“Permian”). At December 31, 2016, included in Accounts payable and accrued expenses was $3.1 million and $0.4 million due to Liberty and Permian, respectively.

Other Affiliated Companies

Mark G. Papa, our President, Chief Executive Officer and Chairman of the Board, serves as a director and Chairman of the Board of Oil States International, Inc., an energy services company publicly traded on the New York Stock Exchange (“Oil States”). From time to time, the Successor obtains services related to drilling and completion activities from Oil States. In particular, during the fiscal year ended December 31, 2016, the Successor paid approximately $1.2 million to Oil States. At December 31, 2016, included in Accounts payable and accrued expenses was $0.2 million due to Oil States.