Exhibit 23.3


                       Consent of DeGolyer and MacNaughton


We consent to the use of the name  DeGolyer and  MacNaughton,  to  references to
DeGolyer and  MacNaughton,  and to the inclusion of  information  taken from our
"Appraisal Report as of December 31, 2006 on Certain Properties owned by Abraxas
Petroleum  Corporation,"  "Appraisal  Report as of December  31, 2005 on Certain
Properties owned by Abraxas Petroleum  Corporation," and "Appraisal Report as of
December 31, 2004 on Certain Properties owned by Abraxas Petroleum  Corporation"
(our  reports)  under  the  sections  "Item  1  -  Business  General","  Item  2
Properties", "Primary Operating Areas" and "Reserves Information" in the Abraxas
Petroleum Corporation Annual Report on Form 10-K for the year ended December 31,
2006.

                                             DeGolyer and MacNaughton



Dallas, Texas
March 14, 2007