Common use of Acceptance of Contract Clause in Contracts

Acceptance of Contract. The foregoing Contract, including the provisions relating to Indemnity, release of liability and allocation of risk of Subparagraphs 4.9 and 6.3(c), Paragraphs 10 and 12, and Subparagraphs 14.1 through 14.12, is acknowledged, agreed to and accepted by Operator this day of , 20 . OPERATOR: DIAMONDBACK E&P, LLC By: Title: The foregoing Contract, including the provisions relating to Indemnity, release of liability and allocation of risk of Subparagraphs 4.9, 6.3(c), Paragraphs 10 and 12, and Subparagraphs 14.1 through 14.12, is acknowledged, agreed to and accepted by Contractor this day of , 20 , which is the effective date of this Contract, subject to rig availability, and subject to all of its terms and provisions, with the understanding that it will not be binding upon Operator until Operator has noted its acceptance, and with the further understanding that unless said Contract is thus executed by Operator within days of the above date Contractor shall be in no manner bound by its signature thereto. OPERATOR: BISON DRILLING & FIELD SERVICES LLC By: Title: EXHIBIT “A” To Daywork Contract dated , 20 Operator DIAMONDBACK E&P, LLC Contractor BISON DRILLING & FIELD SERVICES Well Name and Number SPECIFICATIONS AND SPECIAL PROVISIONS

Acceptance of Contract. The foregoing Contract, including the provisions relating to Indemnityindemnity, release of liability and allocation of risk of Subparagraphs 4.9 and 6.3(c), Paragraphs 10 and 12, and Subparagraphs 14.1 through 14.12, is acknowledged, agreed to and accepted by Operator this _____ day of _____________, 20 2013. OPERATOR: DIAMONDBACK E&P, LLC By: Title: The foregoing Contract, including the provisions relating to Indemnityindemnity, release of liability and allocation of risk of Subparagraphs 4.9, 6.3(c), Paragraphs 10 and 12, and Subparagraphs 14.1 through 14.12, is acknowledged, agreed to and accepted by Contractor this 15th day of March, 20 2013, which is the effective date of this Contract, subject to rig availability, and subject to all of its terms and provisions, with the understanding that it will not be binding upon Operator until Operator has noted its acceptance, and with the further understanding that unless said Contract is thus executed by Operator within 15 days of the above date Contractor shall be in no manner bound by its signature thereto. OPERATORCONTRACTOR: BISON DRILLING & FIELD SERVICES LLC By: Xxxx E, Xxxxx Title: President EXHIBIT “A” To Daywork Contract dated March 15, 20 2013 Operator DIAMONDBACK E&P, Pacific Energy Development MSL LLC Contractor BISON DRILLING & FIELD SERVICES BEREDCO LLC Well Name and Number See Exhibit C SPECIFICATIONS AND SPECIAL PROVISIONS

Acceptance of Contract. The foregoing Contract, including the provisions relating to Indemnity, release of liability and allocation of risk of Subparagraphs 4.9 and 6.3(c), Paragraphs 10 and 12, and Subparagraphs 14.1 through 14.12, is acknowledged, agreed to and accepted by Operator this day of , 20 . OPERATOR: DIAMONDBACK E&P, LLC By: Title: The foregoing Contract, including the provisions relating to Indemnity, release of liability and allocation of risk of Subparagraphs 4.9, 6.3(c), Paragraphs 10 and 12, and Subparagraphs 14.1 through 14.12, is acknowledged, agreed to and accepted by Contractor this day of , 20 , which is the effective date of this Contract, subject to rig availability, and subject to all of its terms and provisions, with the understanding that it will not be binding upon Operator until Operator has noted its acceptance, and with the further understanding that unless said Contract is thus executed by Operator within days of the above date Contractor shall be in no manner bound by its signature thereto. OPERATOR: BISON DRILLING & FIELD SERVICES LLC By: Title: EXHIBIT “A” To Daywork Contract dated , 20 Operator DIAMONDBACK E&P, E&P. LLC Contractor BISON DRILLING & FIELD SERVICES Well Name and Number SPECIFICATIONS AND SPECIAL PROVISIONS

Acceptance of Contract. The foregoing Contract, including the provisions relating to Indemnityindemnity, release of liability and allocation of risk of Subparagraphs 4.9 and 6.3(c), Paragraphs 10 and 12, and Subparagraphs 14.1 through 14.12, is acknowledged, agreed to and accepted by Operator this _____ day of _____________, 20 2012. OPERATOR: DIAMONDBACK E&P, LLC By: Title: The foregoing Contract, including the provisions relating to Indemnityindemnity, release of liability and allocation of risk of Subparagraphs 4.9, 6.3(c), Paragraphs 10 and 12, and Subparagraphs 14.1 through 14.12, is acknowledged, agreed to and accepted by Contractor this _____ day of November, 20 2012, which is the effective date of this Contract, subject to rig availability, and subject to all of its terms and provisions, with the understanding that it will not be binding upon Operator until Operator has noted its acceptance, and with the further understanding that unless said Contract is thus executed by Operator within 15 days of the above date Contractor shall be in no manner bound by its signature thereto. OPERATORCONTRACTOR: BISON DRILLING & FIELD SERVICES LLC By: Xxxx E, Xxxxx Title: President EXHIBIT “A” To Daywork Contract dated ____________, 20 2012 Operator DIAMONDBACK E&P, Condor Energy Technology LLC Contractor BISON DRILLING & FIELD SERVICES BEREDCO LLC Well Name and Number See Exhibit C SPECIFICATIONS AND SPECIAL PROVISIONS

Acceptance of Contract. The foregoing Contract, including the provisions relating to Indemnity, release of liability and allocation of risk of Subparagraphs 4.9 and 6.3(c), Paragraphs 10 and 12, and Subparagraphs 14.1 through 14.12, is acknowledged, agreed to and accepted by Operator this day of , 20 . OPERATOR: DIAMONDBACK E&P, LLC By: Title: The foregoing Contract, including the provisions relating to Indemnity, release of liability and allocation of risk of Subparagraphs 4.9, 6.3(c), Paragraphs 10 and 12, and Subparagraphs 14.1 through 14.12, is acknowledged, agreed to and accepted by Contractor this day of , 20 , which is the effective date of this Contract, subject to rig availability, and subject to all of its terms and provisions, with the understanding that it will not be binding upon Operator until Operator has noted its acceptance, and with the further understanding that unless said Contract is thus executed by Operator within days of the above date Contractor shall be in no manner bound by its signature thereto. OPERATOR: BISON DRILLING & FIELD SERVICES LLC By: Title: EXHIBIT “A” To Daywork Contract dated , 20 Operator DIAMONDBACK E&P, E&P. LLC Contractor BISON DRILLING & 8. FIELD SERVICES Well Name and Number SPECIFICATIONS AND SPECIAL PROVISIONS