The top landholders in the play other than BHP Billiton are EOG Resources ( EOG 0.71% ), Chesapeake Energy ( CHKA.Q ), Marathon Oil ( MRO ), ConocoPhillips ( COP -0.05% ), Murphy Oil ( MUR 3.57% ), Anadarko Petroleum ( APC ), and Swift Energy ( SBOW ). Two joint ventures, one between Pioneer Natural Resources ( PXD ) and India's Reliance, and another between Talisman Energy (NYSE: TLM) and Norway's Statoil ( EQNR -2.13% ) are also among the acreage leaders.