Heape Exploration Inc. / Resources USA Inc. / Wilbanks Family Partnership Ltd. / Noble Natural Resources LLC / Eastland Oil Company / Yates Drilling Company / ConocoPhillips Company / EOG Resources Inc. / Telesis Operating Company Inc. / Pioneer Natural Resources USA Inc. / Arena Resources Inc. / Samson Lone Star LLC / Chalfant Properties Inc. / David H. Arrington Oil & Gas Inc. / MexTex Operating Company / S & J Operating Company / Encore Operating L.P. / Shanee Oil Co. Inc. / Permian Basin Inc. / Jr. L.P. / Primexx Energy Partners Ltd. / Chesapeake Exploration L. L. C. / /
Lease Sale #112 October 24, 2007 Preliminary Results Tract No