Exhibit 23.1
DEGOLYERAND MACNAUGHTON
5001 SPRING VALLEY ROAD
SUITE 800 EAST
DALLAS, TEXAS 75244
CONSENT of INDEPENDENT PETROLEUM ENGINEERS
We hereby consent to the references to DeGolyer and MacNaughton, to the incorporation of information contained in our “Appraisal Report as of December 31, 2003 on Certain Properties Owned by Geomet, Inc.,” “Appraisal Report as of December 31, 2004 on Certain Properties Owned by Geomet, Inc.,” “Appraisal Report as of December 31, 2005 on Certain Properties Owned by Geomet, Inc.,” “Appraisal Report on Proved Reserves as of December 31, 2006 on Certain Properties Owned by Geomet, Inc.,” and “Appraisal Report on Proved Reserves as of December 31, 2007 on Certain Properties owned by Geomet, Inc.” (our Reports), and to references to our Reports in “Part I, Item 2, Properties,” “Part II, Item 6, Selected Financial Data,” “Part II, Item 7, Management’s Discussion and Analysis of Financial Condition and Results of Operations,” and “Part II, Item 8, Financial Statements and Supplementary Data” in the Annual Report on Form 10–K of Geomet, Inc. for the year ended December 31, 2007.
Very truly yours,
/s/ DeGOLYER and MacNAUGHTON
DeGOLYER and MacNAUGHTON
Dallas, Texas
March 13, 2008
