Exhibit 23.1


CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We  hereby  consent  to the  incorporation  by  reference  in this  Registration
Statement on Form S-3 of our report dated February 28, 2005,  except for Note 2,
as to which the date is March 24, 2005,  relating to the consolidated  financial
statements of Abraxas  Petroleum  Corporation  appearing in the Company's Annual
Report on Form 10-K for the year ended December 31, 2004.

We also  consent  to the  reference  to us under the  caption  "Experts"  in the
Prospectus.

/s/ BDO Seidman, LLP
--------------------

Dallas, Texas
August 11, 2005









                                                                    Exhibit 23.2

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in this  Registration  Statement on
Form S-3 of our report dated March 10, 2003, (July 18, 2003 as to Note 17, March
28,  2005  as  to  the  reclassification  of  the  2002  consolidated  financial
statements for  discontinued  operations  referred to in Note 2) relating to the
financial  statements of Abraxas Petroleum  Corporation  appearing in the Annual
Report on Form 10-K of Abraxas Petroleum Corporation for the year ended December
31,  2004  and to  the  reference  to us  under  the  heading  "Experts"  in the
Prospectus, which is part of this Registration Statement.

/s/ Deloitte & Touche LLP
-------------------------

San Antonio, Texas
August 11, 2005





                                                                   Exhibit 23.3


                            DEGOLYER AND MACNAUGHTON
                        4925 GREENVILLE AVENUE, SUITE 400
                                ONE ENERGY SQUARE
                               DALLAS, TEXAS 75206



                                 August 9, 2005





Abraxas Petroleum Corporation
500 N. Loop 1604 East
Suite 100
San Antonio, Texas  78232

Ladies and Gentlemen:

We  hereby  consent  to the  incorporation  in the  "Experts"  section  of  your
Registration  Statement on Form S-3 dated on or about  August 11,  2005,  of the
references to DeGolyer and  MacNaughton  and to the use by reference in the "Our
Business"  section  of  information  contained  in our  "Appraisal  Report as of
December 31, 2004 on Certain Properties owned by Abraxas Petroleum Corporation."


                                           Very truly yours,

                                           /s/ DeGolyer and MacNaughton
                                           ----------------------------
                                           DeGolyer and MacNaughton