SCHEDULE 13D

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EXHIBIT A

JOINT FILING AGREEMENT

The undersigned acknowledge and agree that the foregoing statement on Schedule 13D Amendment No.1 is filed on behalf of each of the undersigned and that all subsequent amendments to this statement on Schedule 13D shall be filed on behalf of each of the undersigned without the necessity of filing additional joint filing agreements. The undersigned acknowledge that each shall be responsible for the timely filing of such amendments, and for the completeness and accuracy of the information concerning him or it contained herein and therein, but shall not be responsible for the completeness and accuracy of the information concerning the others, except to the extent that he or it knows or has reason to believe that such information is inaccurate.

DATE: December 19, 2014

FLATONIA ENERGY, LLC
By:	/s/ John K. Howie
Name:	John K. Howie
Title:	President
FLATONIA HOLDINGS, LLC
By: Parallel Resource Partners, LLC, its manager
By:	/s/ Ron Hulme
Name:	Ron Hulme
Title:	Chief Executive Officer
ENERGY RECAPITALIZATION AND RESTRUCTURING FUND, L.P.
By: Parallel Resource Partners, LLC, its general partner
By:	/s/ Ron Hulme
Name:	Ron Hulme
Title:	Chief Executive Officer
ERR FI FLATONIA HOLDINGS, LLC
By: Energy Recapitalization and Restructuring FI, Ltd., its managing member
By:	/s/ Ron Hulme
Name:	Ron Hulme
Title:	Director

SCHEDULE 13D

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ENERGY RECAPITALIZATION AND RESTRUCTURING FI, LTD.
By:	/s/ Ron Hulme
Name:	Ron Hulme
Title:	Director
ENERGY RECAPITALIZATION AND RESTRUCTURING FI FUND, L.P.
By: Parallel Resource Partners, LLC, its general partner
By:	/s/ Ron Hulme
Name:	Ron Hulme
Title:	Chief Executive Officer
ERR FI II FLATONIA INTERMEDIATE, L.P.
By: Parallel Resource Partners, LLC, its general partner
By:	/s/ Ron Hulme
Name:	Ron Hulme
Title:	Chief Executive Officer
PARALLEL RESOURCE PARTNERS, LLC
By:	/s/ Ron Hulme
Name:	Ron Hulme
Title:	Chief Executive Officer
BLUESCAPE ENERGY PARTNERS LLC
By:	/s/ C. John Wilder, Jr.
Name:	C. John Wilder, Jr.
Title:	Executive Chairman
BLUESCAPE RESOURCES COMPANY LLC
By:	/s/ C. John Wilder, Jr.
Name:	C. John Wilder, Jr.
Title:	Executive Chairman
/s/ C. John Wilder, Jr.
C. John Wilder Jr.

SCHEDULE 13D

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CARLSON ENERGY PARTNERS I, LLC
By:	/s/ Clint D. Carlson
Name:	Clint D. Carlson
Title:	Chairman

CARLSON ENERGY CORP.
By:	/s/ Clint D. Carlson
Name:	Clint D. Carlson
Title:	President

/s/ Clint D. Carlson

Clint D. Carlson

/s/ Ron Hulme

Ron Hulme

/s/ John K. Howie

John K. Howie