Filed by Abraxas Petroleum Corporation
                                                   (Commission File No. 0-19118)
                          Pursuant to Rule 425 Under the Securities Act of 1933,
                                                                     as amended,
                                        And Deemed Filed Pursuant to Rule 14a-12
                                      Under the Securities Exchange Act of 1934,
                                                                     as amended.
                                    Subject Company:  Grey Wolf Exploration Inc.
                                                        (no Commission File No.)

                                  NEWS RELEASE

            ABRAXAS REPORTS IMPROVED SECOND QUARTER FINANCIAL RESULTS
                             AND OPERATIONAL UPDATE

SAN ANTONIO,  TX (August 13, 2001) - Abraxas  Petroleum  Corporation  (AMEX:ABP)
today  announced  that  successful  drilling,  cost  effective  operations,  and
improved prices all contributed to Abraxas  meeting  analysts'guidance  results.
For the quarter  ended Jue 30,  2001, a 75%  improvement,  compared to the prior
year period, in both cash flow (after interest) and losses resulted in $.28 cash
flow  per  share  and  $.05 net loss per  share.  The  Company  is also  working
aggressively  to both  restructure  its debt to bring  interest  costs  down and
improve its balance sheet as well as continue to reduce  operating costs. All of
which augurs well for Abraxas' future. Bob Watson,  Company CEO, commented,  "In
south Texas we drilled a successful offset to our previously  announced Dimon #1
well confirming our 3D seismic  interpretation  and setting up additional offset
locations.  This well, the Pettus #3, is currently  producing at 3 MMcfe per day
with 3000# of flowing tubing pressure."

Watson commented on other U.S. operations,  "In west Texas two Montoya wells are
now producing from our drilling  agreement with EOG Resources,  Inc.  (NYSE:EOG)
and two more wells are expected to be drilling in the second  half.  On our 100%
owned Oates S.W.  Montoya play, 3D seismic has been  interpreted  and one or two
old well bores have been  identified as re-entry  candidates to test the Montoya
and  Devonian  formations  in this field at a much lower cost than  drilling new
wells.  Operations  will  commence  on the  first of these  re-entry  candidates
shortly. In Wyoming, the interpretation of our 3D seismic survey is complete and
four zones have been identified  that are  potentially  productive in our Brooks
Draw  area.  Permitting  has begun on two  vertical  wells that will allow us to
confirm the 3D seismic interpretation and test multiple zones."

On Canadian  operations,  Mr. Watson stated,  "Based on our 3D seismic  acquired
over the winter,  over 50 locations  have been  identified  in our core areas of
Caroline and Pouce Coupe. Drilling has commenced in both areas since break-up in
June and we have  successfully  drilled  and  evaluated  4  wells,  with 2 wells
currently  drilling.  Operations  have been slowed by an extremely wet summer in
Alberta but the first of these wells is expected to be on  production in each of
these areas shortly.  In Ladyfern,  we were successful in a recent lease sale in
acquiring additional acreage within our 3D seismic survey that could add up to 2
additional locations to the 4 locations planned for this winter drilling season.
Firm  capacity  has been  contracted  for on a  planned  pipeline  expansion  in
anticipation of our drilling program this winter."

As  previously  announced,  Abraxas  commenced  its  tender  on August 1 for the
remaining  shares of its 48.3% owned Canadian  subsidiary Grey Wolf  Exploration
Inc. (TSE:GWX).  The tender will expire on September 5, 2001, unless extended or
withdrawn.  The Company also completed  approximately $10 million of asset sales
in Canada  during  the  quarter  and in the third  quarter  expects  to close on
another  approximate $10 million of non-core asset sales in Canada.  These asset
sales  combined  with  the  tender  for  Grey  Wolf  are  another  step  in  the
restructuring  of the Company's  balance  sheet that will improve  liquidity and
earnings  going  forward  and allow  Abraxas to  continue  to  improve  its cost
structure  while  focusing on its  portfolio  of  drilling  projects in its core
areas.  For the balance of 2001, the Company  expects to continue its successful
exploitation  activities in the United States and in Canada and looks forward to
its winter  drilling  program in the Ladyfern area. At the same time the Company
will  continue to review  ways to improve  its  balance  sheet and pare costs in
order to maintain liquidity and enhance shareholder value.

Abraxas invites your participation in a conference call on Tuesday, August 14th,
at  10:30  am CDT to  discuss  the  contents  of this  release  and  respond  to
questions.   Please  call  1-800-289-0436   between  10:20  and  10:30  am  CDT,
confirmation  code 456060,  if you would like to participate in the call.  There
will be a replay of the  conference  call  available by calling  1-888-203-1112,
confirmation  code  456060,  approximately  12:30 pm CDT  Tuesday,  August 14th,
through 5:00 pm CDT Tuesday, August 21st.

THIS PRESS RELEASE DOES NOT CONSTITUTE AN OFFER TO SELL OR A SOLICITATION  OF AN
OFFER TO EXCHANGE THE SECURITIES OF ABRAXAS FOR THE SECURITIES OF GREY WOLF. ANY
SUCH OFFER OR SOLICITATION WILL BE SUBJECT TO CERTAIN  CUSTOMARY  CONDITIONS AND
WILL BE MADE ONLY BY ABRAXAS'  PROSPECTUS AND OTHER  EXCHANGE  OFFER  MATERIALS,
WHICH  HAVE  BEEN  FILED  WITH  THE SEC AND  HAVE  BEEN  MAILED  TO GREY  WOLF'S
STOCKHOLDERS. GREY WOLF'S STOCKHOLDERS ARE URGED TO READ THESE DOCUMENTS BECAUSE
THEY CONTAIN  IMPORTANT  INFORMATION  ABOUT THE OFFER.  THE  DOCUMENTS  ARE ALSO
AVAILABLE  AT NO CHARGE FROM THE SEC'S WEB SITE,  WWW.SEC.GOV,  AND FROM ABRAXAS
PETROLEUM CORPORATION AT 500 NORTH LOOP 1604 EAST, SUITE 100, SAN ANTONIO, TEXAS
78232.

Abraxas Petroleum  Corporation is a San Antonio-based  crude oil and natural gas
exploration and production  company that also processes natural gas. It operates
in Texas,  Wyoming and western  Canada.  For  additional  information  about the
Company,  please  visit  our web  site,  www.abraxaspetroleum.com,  for the most
current  and  updated  information.  The web site is  updated  daily in order to
comply with the SEC Regulation FD (Fair Disclosure).

Safe Harbor for  forward-looking  statement:  Statements in this release looking
forward in time involve  known and unknown  risks and  uncertainties,  which may
cause the Company's actual results in future periods to be materially  different
from any future performance suggested in this release. Such factors may include,
but may not be  necessarily  limited to,  changes in the prices  received by the
Company for crude oil and natural gas. In addition,  the Company's  future crude
oil and natural gas production is highly  dependent upon the Company's  level of
success in  acquiring  or finding  additional  reserves.  Further,  the  Company
operates in an industry sector where  securities  values are highly volatile and
may be influenced by economic and other factors beyond the Company's control. In
the  context  of  forward-looking  information  provided  for in  this  release,
reference is made to the  discussion  of risk factors  detailed in the Company's
filing with the Securities and Exchange Commission during the past 12 months.

FOR MORE INFORMATION CONTACT:
Chris Williford/CFO and Executive Vice President
Telephone 210.490.4788
cwilliford@abraxaspetroleum.com
www.abraxaspetroleum.com










                          ABRAXAS PETROLEUM CORPORATION
                                                          QUARTER-END RESULTS
                                                                        (UNAUDITED)
                                                            Three Months                  Six Months
(In thousands except per share data)                       Ended June 30,               Ended June 30,

                                                           2001              2000         2001           2000
                                                           ----              ----         ----           ----
                    Operations Data:
                                                                                          
Revenues                                                $21,116           $16,287      $50,202        $33,004
Cash Flow (Before Working Capital Changes)*               6,636             3,791       20,739          5,977
Net Income(Loss)*                                        (1,274)           (5,413)      (1,019)       (12,240)
Net Income(Loss)  Per Share*                               (.05)             (.24)       (.004)          (.54)

Weighted Ave. Shares Outstanding                           23.6              22.7         23.1           22.6

                   Production:
Crude Oil (BPD)                                           1,347             1,773        1,408          1,812
NGL (BPD)                                                   723               900          795            903
Natural Gas (MCFPD)                                      49,776            56,135       50,588         57,957
MMCFEPD                                                    62.2              72.2         63.9           74.2

          Prices (net of hedge losses):
Crude Oil ($/BBL)                                        $25.32            $15.98       $26.31         $15.85
NGL's ($/BBL)                                             24.10             19.72        26.46          20.62
Natural Gas ($/MCF)                                        3.41              2.21         4.14           2.13
Price per MCFE                                             3.56              2.36         4.18           2.32

                    Expenses:
Lease Operating ($/MCFE)                                   $.77              $.66         $.80           $.66
General & Administrative ($/MCFE)                           .28               .25          .32            .23
Interest ($/MCFE)                                          1.38              1.16         1.35           1.14
D/D/A ($/MCFE)                                             1.46              1.30         1.48           1.29


*YTD 6/30/2000  proforma  for  comparability  purposes,   excludes  a  one  time
     significant  gain of $34.0 million  related to the company's sale of equity
     method investment.



                          Balance Sheet Data (In $000s)
                                                      June 30, 2001        December 31, 2000
                                                                            
Working Capital (Deficit)**                                $(9,326)               $(13,829)
Plant/Property/Equipment, Net                              305,889                 304,784
Total Assets                                               328,823                 335,560

Long-Term Debt                                             271,709                 266,441
Shareholders Equity (Deficit)***                           (16,989)                 (6,503)
Common Shares Outstanding (Millions)                          26.0                    22.6


            **YTD    6/30/2001,  excludes  current  liability  related  to hedge
                     accounting of $5.3 million less related  deferred tax asset
                     of $1.0 million

            ***      YTD 6/30/2001  includes an Other  Comprehensive  Income net
                     charge  of  ($6.0)  million  related  to  hedge  accounting
                     adopted in 2001.










                 Abraxas Petroleum Corporation and Subsidiaries

                      Consolidated Statements of Operations
                                   (Unaudited)

                                                            Three Months Ended June 30,            Six Months Ended June 30,
                                                               2001               2000              2001               2000
                                                        ------------------- ----------------- ----------------- -------------------
                                                                           (In thousands except per share data)
                                                                                                       
Revenue:
   Oil and gas production revenues ...................     $      20,127       $    15,501       $     48,376      $     31,127
                                                                                                              $
   Gas processing revenues ...........................               498               645                934             1,402
   Rig revenues ......................................               225               119                408               250
   Other  ............................................               266                22                484               225
                                                        ------------------- ----------------- ----------------- -------------------
                                                                  21,116            16,287             50,202            33,004
Operating costs and expenses:
   Lease operating and production taxes ..............             4,332             4,301              9,191             8,930
   Depreciation, depletion, and amortization .........             8,288             8,518             17,129            17,466
   Rig operations ....................................               191               196                344               384
   General and administrative ........................             1,575             1,643              3,684             3,082
   General and administrative (Stock-based
     compensation) ...................................            (2,332)                -             (1,401)                -
                                                        ------------------- ----------------- ----------------- -------------------
                                                                  12,054            14,658             28,947            29,862
                                                        ------------------- ----------------- ----------------- -------------------
Operating income .....................................             9,062             1,629             21,255             3,142

Other (income) expense:
   Interest income ...................................               (12)             (267)               (28)             (327)
   Amortization of deferred financing fee ............               455               508                910             1,015
   Interest expense ..................................             7,829             7,892             15,610            15,665
   Gain on sale of equity investment..................                 -                 -                  -           (33,983)
   Other expense .....................................                 -                 -                 16               436
                                                        ------------------- ----------------- ----------------- -------------------
                                                                   8,272             8,133             16,508           (17,194)
                                                        ------------------- ----------------- ----------------- -------------------
Net income (loss) from operations before taxes and
   extraordinary item .............................                  790            (6,504)             4,747            20,336

Income tax expense (benefit)..........................             1,509                31              4,285              (296)

Minority interest in income of consolidated foreign
   subsidiary ........................................               555               204              1,481               215
                                                        ------------------- ----------------- ----------------- -------------------
Net income (loss)  before extraordinary item ......               (1,274)           (6,739)            (1,019)           20,417
Extraordinary item:
   Debt extinguishment and restructure................                 -             1,326                  -             1,326
                                                        ------------------- ----------------- ----------------- -------------------
Net income (loss)  ................................        $      (1,274)      $    (5,413)      $     (1,019)     $     21,743
                                                        =================== ================= ================= ===================
Earnings (loss) per common share:
     Net Income (loss) before extraordinary item...       $        (0.05)     $    (0.30)        $     (0.04)      $        0.90
     Extraordinary item ...........................                 -               0.06                 -                  0.06
                                                        ------------------- ----------------- ----------------- -------------------
Net income (loss) per common share ................       $        (0.05)     $    (0.24)        $     (0.04)      $        0.96
                                                        =================== ================= ================= ===================
Earnings (loss) per common share assuming dilution:
     Net Income (loss) before extraordinary item...       $        (0.05)     $    (0.30)        $     (0.04)      $        0.43
     Extraordinary item ...........................                -                0.06                 -                  0.03
                                                        ------------------- ----------------- ----------------- -------------------
Net income (loss) per common share ................       $        (0.05)     $    (0.24)        $     (0.04)      $        0.46
                                                        =================== ================= ================= ===================