EXHIBIT 99.1


                                        NEWS RELEASE

                                        Company Contacts:
                                        Investors:   Frank Hopkins or Scott Rice
                                        Media and Public Affairs: Susan Spratlen
                                                                  (972) 444-9001


                 Pioneer Provides Drilling and Financial Update

Dallas,  Texas,  January 25, 2007 - Pioneer Natural Resources Company (NYSE:PXD)
provided an update today on recent drilling  activities in Tunisia,  South Texas
and  Mississippi,  confirmed  2006  finding  and  development  costs and updated
guidance on fourth quarter 2006 earnings.

Drilling Update

Pioneer  has a sizeable  acreage  position  in the  Ghadames  Basin of  southern
Tunisia with an interest in 5 blocks,  totaling 3.9 million  acres.  In the Adam
Concession,  Pioneer has  participated  in 11 wells,  with 10 successes,  two of
these  within the last few  months.  The  Company  holds a 20%  interest  in the
Concession in partnership  with Eni (Operator),  Talisman and ETAP. The recently
drilled Hawa  development well began producing during the fourth quarter of 2006
bringing  total  Adam  production  to over  20,000  barrels  per day  (BPD),  or
approximately 3,500 BPD net to Pioneer.

The  Company  also  participated  in a new  exploratory  discovery  on the  Adam
Concession.  Data from the well logs and tests of the first of several zones are
encouraging,  and  testing  is  expected  to  be  completed  this  month.  First
production is expected during the first quarter.

Pioneer also announced three  additional oil discoveries in Tunisia which extend
the Company's  successful  exploration  program to two blocks bordering the Adam
Concession.  Pioneer  drilled two of the discoveries on its operated Jenein Nord
Block (50% interest assuming ETAP  participation).  Drilling continues on one of
the wells to also evaluate a deeper target before testing begins.

On the Borj El Khadra  Block,  where Pioneer has a 20% interest  (assuming  ETAP
participation),  an  exploratory  well  encountered  a pay zone  with  excellent
porosity and has been put on an extended production test to further evaluate its
potential. The produced oil is being trucked for sales through facilities on the
Adam Concession.

As a result of this success,  Pioneer  continues to believe that Tunisia has the
potential  to  become a core area for the  Company  with  attractive  investment
returns and finding costs.  Pioneer is currently  running three drilling rigs in
Tunisia, including one rig operated by Pioneer. Near-term drilling plans include
an additional exploration well on the Pioneer-operated Jenein Nord Block and two
additional wells on the Adam Concession.  After the performance of the discovery
wells has been monitored for several months, additional appraisal wells may also
be drilled.






In South Texas,  Pioneer continues its expansion activities in the Edwards Trend
where its legacy Pawnee field is located. More than 300 billion cubic feet (Bcf)
of gas is ultimately  expected to be produced from the Pawnee field, and Pioneer
is extending its success in the area with several  additional  discoveries along
the Trend.  In 2006,  the Company  increased its Trend acreage  position to over
270,000 gross acres and drilled 16 exploration and appraisal wells targeting new
field discoveries with 88% success, exceeding expectations and increasing proved
gas  reserves.  The six  discoveries  announced  to date  hold  estimated  gross
resource potential of 150 to 325 Bcf.

Since the end of the third  quarter of 2006,  three new wells have been added to
production in the Edwards expansion area,  bringing the total to eight producing
wells. Gross production from these eight wells is more than 9 million cubic feet
per day (MMCFPD). Six wells are awaiting pipelines or testing.

Having 3-D seismic data has  significantly  enhanced  field  development  in the
Pawnee  field,  allowing  Pioneer  to more  accurately  locate  and  orient  the
horizontal wells for optimal results. To expand its 3-D data coverage to include
new  discoveries  and  additional  prospects,  the  Company  plans to shoot  and
interpret  approximately  850 square  miles of new data.  Multiple  surveys  are
planned for 2007,  with three  already  underway.  While the new seismic work is
being  completed,  Pioneer  will direct most of its  investments  in the Edwards
Trend to lower-risk,  lower-cost  development  drilling on existing  discoveries
where 3-D data is currently available.

The  Company is  particularly  encouraged  with recent  results  from its infill
program in the Pawnee field. A new horizontal well was recently drilled within a
developed  section of the field and is initially  producing  more than 5 MMCFPD.
Additional infill drilling locations are currently being evaluated.

To revitalize  existing  horizontal wells in the field,  Pioneer has initiated a
pilot using more extensive fracture  stimulation  techniques and is excited with
initial results.  Horizontal wells in the field are completed open-hole and have
traditionally  been lightly  stimulated  with acid. By performing a sand-propped
fracture  stimulation  on one of its  existing  horizontal  wells,  the  Company
increased  production from the well from  approximately  100 thousand cubic feet
per day (MCFPD) to an initial rate of approximately  1,000 MCFPD.  Pioneer plans
to fracture  stimulate  additional  horizontal wells,  including newer producing
wells,  as the year  progresses  to further  evaluate the  potential  for a more
extensive  program.  Plans  are also in  progress  to expand  the gas  gathering
infrastructure  in the area to  accommodate  expected  production  growth and to
maximize efficiency at Pioneer's Pawnee Plant.

Pioneer is also  building an acreage  position  covering  multiple  plays in the
Mississippi Salt Basin and now holds leases and option  interests  covering over
300,000 acres.  Over the next two to three years,  the Company expects to test a
number  of  opportunities  and to  continue  technical  work  that is  currently
underway.

One of the lower risk opportunities in the portfolio is the redevelopment of the
Bolton Gas Field in Hinds County, Mississippi. The first well of the project was
drilled to 17,600 feet and penetrated multiple  gas-bearing Cotton Valley sands.
Currently the well is being logged,  and completion  design work is progressing.
The  location  for the next well has been  built,  and  drilling  will  commence
immediately after operations are completed on the current well. Pioneer plans to
drill at least one more well in 2007 during this  initial  phase of the project.
Facility  construction  is underway,  and first  production  is  anticipated  in
mid-2007.

Pioneer has also  concluded  drilling  operations  on its first well testing the
Norphlet  formation  in  Mississippi.  The well was drilled in Wayne County and,
after extensive evaluation, has been plugged and abandoned resulting in a fourth
quarter 2006 charge of approximately  $16 million.  Information from the well is
being kept  confidential  at this time as Pioneer and its  partners  incorporate





information  gained  from  this well into the  technical  analysis  of the play.
Future  drilling  plans  will be  determined  after the  technical  analysis  is
completed.

Financial Outlook

Pioneer  continues to expect full-year finding and development costs for 2006 to
be in the range of $15 to $20 per barrel oil equivalent  (BOE),  consistent with
the Company's guidance in March 2006.

Earnings from continuing  operations for the fourth quarter of 2006 are expected
to range from $.17 to $.22 per  diluted  share.  Pioneer's  production  and cost
performance  were strong while  exploration and  abandonment  expense was higher
than  normal  as a result of  charges  not  directly  related  to the  quarter's
drilling activities. Details are provided below.

Fourth quarter 2006 production is expected to average approximately 101 thousand
barrels per day on an oil equivalent basis (MBOEPD) and exceed the 2006 year-end
exit rate of 95 MBOEPD to 100 MBOEPD that was  forecasted  in March 2006.  Total
production  for 2006 is expected to be  approximately  35.9 million  barrels oil
equivalent  (MMBOE),  which  is at the  high  end of  the  full-year  production
guidance range provided by the Company in March 2006 of 33 to 37 MMBOE.

The Company's  fourth quarter  realized price for oil,  including the effects of
hedges,  is  expected  to average  approximately  $61.45 to $61.95  per  barrel,
including  approximately  $12.58 per barrel  related to  deferred  revenue  from
volumetric  production  payments  (VPPs) for which  production  is not recorded.
Pioneer's  fourth quarter  realized price for natural gas liquids is expected to
range from $32.50 to $33.00 per barrel.  The Company's  fourth quarter  realized
price  for gas,  including  the  effects  of  hedges,  is  expected  to  average
approximately   $5.50  to  $5.80  per  thousand  cubic  feet  (Mcf),   including
approximately  $.58 per Mcf  related  to  deferred  revenue  from VPPs for which
production is not recorded.

Total  exploration and abandonment  expense during the fourth quarter of 2006 is
expected to be $128 million to $133 million.  The fourth quarter exploration and
abandonment  expense  includes a $33 million  increase in the estimated  cost to
abandon East  Cameron 322,  which was  destroyed  by Hurricane  Rita,  offset by
insurance  coverage that is reflected in other income (see  detailed  discussion
below). Excluding the additional abandonment accrual for East Cameron 322, which
was not  forecasted in the Company's  November 2006  guidance,  exploration  and
abandonment expense was at the top end of the guidance range.

Exploration and abandonment  expense will include  approximately  $13 million of
costs associated with an unsuccessful test of the Flying Cloud prospect adjacent
to Pioneer's  Clipper  discovery in the deepwater Gulf of Mexico,  as previously
disclosed,  and  approximately  $16  million  associated  with the  unsuccessful
Norphlet well in  Mississippi.  It will also include  approximately  $11 million
associated with drilling  activities in lower-risk resource plays in the Edwards
Trend in South  Texas,  the Uinta and  Piceance  basins  in the  Rockies  and in
Canada.

Pioneer will also expense exploration costs of approximately $18 million related
to  previously  drilled  discoveries  that  were  suspended  pending  additional
commercialization,  appraisal  and/or  technical work which was completed during
the fourth quarter of 2006. Approximately $7 million of that total is associated
with two discoveries  previously drilled on the Gulf of Mexico shelf during 2005
which are no longer expected to be developed considering the rise in development
costs and Pioneer's  onshore focus.  Approximately  $7 million  relates to prior
period  exploration  costs for Pioneer's  Boomslang  discovery  drilled offshore
South Africa during 2001. The Boomslang field is not part of the South Coast Gas
Project currently being developed.  While the field could potentially be tied in
to the project's  infrastructure at a future date,  commercialization plans have
not progressed  sufficiently  to allow the Company to continue to capitalize the





exploration costs related to the discovery.  Approximately $4 million relates to
an appraisal well drilled in 2005 on the Company's Anaguid Block in Tunisia. The
appraisal  well  encountered  gas and  condensate in the similar  horizon as the
initial  exploration  well, but after further  technical  analysis,  it has been
determined that the well is not commercial.

In  addition,  exploration  expense  will include $32 million to $34 million for
personnel and seismic  investments,  primarily  related to the Edwards Trend and
Uinta and  Piceance  basin areas and other  onshore  resource  plays  Pioneer is
currently  pursuing,  and $5 million to $8 million  for delay  rentals,  acreage
abandonments and other expenditures.

During the fourth quarter of 2006, the Company received notification denying its
application  to "reef in place" a  substantial  portion of the East  Cameron 322
debris.  As a result,  the Company  increased its estimate for debris removal by
$33  million,  bringing  the total  estimated  cost to reclaim  and  abandon the
facility to $119 million. Pioneer expects that substantially all of the cost for
debris removal will be covered by insurance,  and recorded  estimated  insurance
recoveries of $43 million in other income during the fourth quarter. The Company
believes that a substantial  portion of the total  estimated cost to reclaim and
abandon  the  facility  is  covered  by  insurance,   and  additional  insurance
recoveries  will be recorded to other income in future  periods.  Operations  to
reclaim and abandon the East Cameron 322  facilities  began in January 2007, and
the Company expects to incur a substantial portion of its accrued costs in 2007.

Fourth quarter  production costs (including  production and ad valorem taxes and
transportation  costs) are expected to average  $10.40 to $10.65 per BOE.  These
costs are expected to be less than prior  guidance  primarily  due to lower than
anticipated 2006 ad valorem taxes.

Depreciation,  depletion and amortization  expense is expected to average $10.10
to $10.50 per BOE.  General  and  administrative  expense is  expected to be $29
million to $31  million.  Interest  expense is expected to be $24 million to $25
million,  offset by interest income of  approximately  $3 million.  Accretion of
discount on asset  retirement  obligations  is expected to be  approximately  $1
million.  Each of these financial measures was within the ranges provided by the
Company in its November 2006 guidance.

The Company's fourth quarter effective income tax rate is expected to range from
47% to 52%,  principally  due to a higher  proportion  of the  Company's  fourth
quarter  income  coming from Tunisia  which has a higher  income tax rate.  Cash
income taxes are expected to be less than $5 million and principally  related to
Tunisian income taxes.

Pioneer is a large  independent oil and gas exploration and production  company,
headquartered in Dallas,  Texas,  with operations in the United States,  Canada,
South Africa and  Tunisia.  For more  information,  visit  Pioneer's  website at
www.pxd.com .

Except for historical  information contained herein, the statements in this News
Release are forward-looking statements that are made pursuant to the Safe Harbor
Provisions   of  the  Private   Securities   Litigation   Reform  Act  of  1995.
Forward-looking  statements and the business prospects of Pioneer are subject to
a number of risks and uncertainties  which may cause Pioneer's actual results in
future periods to differ materially from the forward-looking  statements.  These
risks and uncertainties include,  among other things,  volatility of oil and gas
prices,  product  supply  and  demand,   competition,   the  ability  to  obtain
environmental  and  other  permits  and the  timing  thereof,  other  government
regulation  or action,  third  party  approvals,  international  operations  and
associated  international  political and economic instability,  litigation,  the
costs  and  results  of  drilling  and  operations,   availability  of  drilling
equipment,  Pioneer's ability to replace reserves,  implement its business plans
or  complete  its  development  projects  as  scheduled,  access  to and cost of
capital, the assumptions  underlying production  forecasts,  uncertainties about
estimates of  reserves,  quality of technical  data,  environmental  and weather
risks,  acts of war or  terrorism.  These  and  other  risks  are  described  in
Pioneer's  10-K and 10-Q  Reports  and other  filings  with the  Securities  and
Exchange Commission.





Cautionary Note to U.S.  Investors -- The SEC permits oil and gas companies,  in
their filings with the SEC, to disclose only proved  reserves that a company has
demonstrated  by  actual   production  or  conclusive   formation  tests  to  be
economically  and legally  producible  under  existing  economic  and  operating
conditions.  Pioneer  uses  certain  terms in this  release,  such as  "resource
potential,"  "expected" or other descriptions of volumes of reserves potentially
recoverable  through additional  drilling or recovery  techniques that the SEC's
guidelines  prohibit  Pioneer  from  including  in filings  with the SEC.  These
estimates are by their nature more speculative than estimates of proved reserves
and accordingly are subject to substantially  greater risk of being recovered by
Pioneer.