1 EXHIBIT 23.1 CONSENT OF INDEPENDENT AUDITORS The Board of Directors Pioneer Natural Resources Company We consent to the use of our reports incorporated herein by reference. Our report refers to a change in the method of accounting for the impairment of long-lived assets and for long-lived assets to be disposed of. /s/ KPMG Peat Marwick LLP KPMG PEAT MARWICK LLP Midland, Texas October 29, 1997