Exhibit 99.4

Joint Filing Statement

          We, the undersigned, hereby express our agreement that the attached Schedule 13D is, and any further amendments thereto signed by each of the undersigned shall be, filed on behalf of each of us pursuant to and in accordance with the provisions of Rule 13d-1(k) under the Securities Exchange Act of 1934. This agreement may be terminated with respect to the obligations to jointly file future amendments to such statement on Schedule 13D as to any of the undersigned upon such person giving written notice thereof to each of the other persons signatory hereto, at the principal office thereof.

    Dated: February 8, 2008

ENCORE ACQUISITION COMPANY
By:	/s/ Robert C. Reeves
	Robert C. Reeves
	Senior Vice President, Chief Financial Officer and Treasurer
ENCORE PARTNERS LP HOLDINGS LLC
By:	/s/ Robert C. Reeves
	Robert C. Reeves
	Vice President, Treasurer and Secretary
EAP OPERATING, LLC
By:	/s/ Robert C. Reeves
	Robert C. Reeves
	Senior Vice President, Chief Financial Officer and Treasurer
EAP PROPERTIES, INC.
By:	/s/ Robert C. Reeves
	Robert C. Reeves
	Senior Vice President, Chief Financial Officer and Treasurer

ENCORE OPERATING, L.P.
By:	EAP Operating, LLC, its general partner
By:	/s/ Robert C. Reeves
	Robert C. Reeves
	Senior Vice President, Chief Financial Officer and Treasurer