1 EXHIBIT 99.2 PURCHASE AND SALE AGREEMENT Reference is made to that certain Purchase and Sale Agreement dated September 4, 1998, by and between PIONEER NATURAL RESOURCES USA, INC. ("Pioneer USA"), , and COSTILLA ENERGY, INC. ("Costilla"), (the "Prior...Purchase and Sale Agreement • December 22nd, 1998 • Pioneer Natural Resources Co • Crude petroleum & natural gas • Texas
WITNESSETH:Option to Purchase Agreement • December 22nd, 1998 • Pioneer Natural Resources Co • Crude petroleum & natural gas • Texas
