| Wednesday April 8, 12:36 pm Eastern Time 
 Company Press Release
 
 Pioneer Natural Resources Company Chairman Jon Brumley to Alter
 Terms of Employment
 
 DALLAS--(BUSINESS WIRE)--April 8, 1998--Pioneer Natural Resources Company (''Pioneer'') (NYSE:PXD - news;
 TSE:PXD - news) announced today that, effective May 15, 1998, Chairman Jon Brumley will be retiring from his day-to-day
 duties as an officer of the company and become an outside director. He will continue to serve as Chairman of the Board and as
 a member of the Board's Executive Committee. Brumley will receive the same compensation received by the other outside
 directors.
 
 Brumley said, ''Since the merger of Mesa and Parker & Parsley, Pioneer has accomplished a tremendous amount, including the
 acquisition of Chauvco Resources and numerous other high growth potential reinvestment opportunities. Scott Sheffield and the
 entire management team are functioning smoothly, and this change allows me a little time to shift gears. I am proud of this group
 and the wealth of opportunities that we have created.''
 
 Sheffield, President and CEO, said, ''With the recent announcement of Pioneer's 1998 strategic initiatives, Jon requested the
 flexibility to continue in a non-executive capacity. This change will give him the opportunity to pursue other entrepreneurial
 endeavors.''
 
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