Exhibit 99.1

                         Abraxas Petroleum Corporation
           500 N. Loop 1604 East, Suite 100, San Antonio, Texas 78232
                 P.O. Box 701007, San Antonio, Texas 78270-1007 Office:
                     210.490.4788 Fax: 210.490.8816

                                  NEWS RELEASE


      Abraxas Acquires Additional Interest in Developing Resource Gas Play
                           in Core West Texas Property

SAN  ANTONIO  (July  11,  2005)  -  Abraxas  Petroleum  Corporation  ("Abraxas")
(AMEX:ABP)  today  announced  that it has acquired an average 44% of the mineral
rights,  all executive  rights and certain  surface  rights under  approximately
12,000  contiguous acres in the Oates SW Field area of West Texas, plus a 3-year
lease on a large portion of the remaining mineral  interests,  for approximately
$2.9 million.  A conference call to discuss this  acquisition has been scheduled
for 3:00 p.m. CT today.

The acquisition has an immediate positive impact to Abraxas' proved reserve base
by adding 2.0 Bcfe and $3.6 million in PV10 (based on SEC pricing at  12/31/04),
as Abraxas' net revenue interest increased  approximately 9% in wells located on
this acreage with booked proved reserves.

In the Oates SW Field area,  Abraxas has one horizontal  well producing from the
Devonian  formation and one 16,500'  horizontal  well currently  drilling to the
Devonian.

In addition to Devonian  potential,  there are several  shallower zones that are
prospective on Abraxas' acreage. Recent industry interest has led to very active
leasing  in  the  area  while  information  gained  from  our  current  drilling
operations and log analysis of abandoned  wells have indicated the potential for
a large  resource gas play.  Based on  preliminary  internal  calculations,  our
acreage could contain over 2 Tcf of gas in place,  in thick  Wolfcamp  turbidite
sands  between  8,000' and 9,500' - actual  reserves will depend on the recovery
factor;  however, these sands appear technically similar to other tight gas sand
resource plays currently being successfully developed in North America. Assuming
160-acre  spacing per well,  our acreage could contain 76 locations,  9 of which
are potential  re-entries of former  producing  wells,  some of which still have
casing in  place.  Drilling  results  and open hole  logs  indicate  that  other
formations  above the  Devonian,  in addition to the  Wolfcamp,  may also be gas
productive.

"We are  very  fortunate  to  have  acquired,  at  attractive  economics,  these
interests  in our  Oates  SW  Field  area as it  adds a  significant  number  of
potential drilling  locations to our inventory,  and due to the perpetual nature
of these interests,  they have no timing  constraints.  This acquisition has the
potential  of  greatly   increasing  our  proved   reserves  in  an  area  where
infrastructure is already in place. With our own workover rig and employees,  we
have  already  commenced  operations  to  complete  the first of nine  available
re-entry wells, in the top three Wolfcamp  sands.  While we remain  confident in
our production and capital expenditure guidance, after reallocating a portion of
our remaining capital budget to this  acquisition,  the opportunity may arise to
increase our drilling  activity  later in the year,  if early  re-entries  prove
successful.  The balance of our drilling  this year will focus on West Texas and
Wyoming," commented Bob Watson, Abraxas' President and CEO.







Abraxas  previously  announced  that  it  anticipated  results  from  the  third
horizontal well in South Texas before the end of the 2nd quarter;  however,  due
to  delays  in  procuring  equipment,  results  are now  anticipated  in the 3rd
quarter.

Conference call information: please dial the toll-free number listed below ten
minutes before the scheduled start time (3:00 p.m. CT) to participate in the
call:

                                 1.800.262.1292
                           Confirmation Code: 4978839

If you are unable to  participate  in the call, a replay  service is  available.
Conference replay will begin at approximately  6:00 p.m. CT on July 11, 2005 and
end  at  midnight  CT  on  July  18,  2005.  The  toll-free   replay  number  is
1.888.203.1112, confirmation code 4978839.

Abraxas Petroleum  Corporation is a San Antonio-based  crude oil and natural gas
exploitation and production company with operations in Texas and Wyoming.

Safe Harbor for forward-looking  statements:  Statements in this release looking
forward in time involve  known and unknown  risks and  uncertainties,  which may
cause Abraxas' 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 Abraxas for
crude oil and natural  gas. In addition,  Abraxas'  future crude oil and natural
gas  production is highly  dependent upon Abraxas' level of success in acquiring
or finding additional reserves.  Further, Abraxas operates in an industry sector
where the  value of  securities  is highly  volatile  and may be  influenced  by
economic  and  other  factors  beyond  Abraxas'  control.   In  the  context  of
forward-looking  information provided for in this release,  reference is made to
the discussion of risk factors  detailed in Abraxas'  filing with the Securities
and Exchange Commission during the past 12 months.

FOR MORE INFORMATION CONTACT:
Barbara M. Stuckey/Director of Corporate Development
Direct Telephone 210.757.9835
Main Telephone 210.490.4788
bstuckey@abraxaspetroleum.com
www.abraxaspetroleum.com