N'oge a na-egwu ala, olulu ahụ zutere nrụgide dị ukwuu <unk> ihe fọrọ nke nta ka ọ bụrụ 25,000 psi (172,369 kPa). Enweghị hydrocarbons azụmahịa dị tupu mkpọpu ala ahụ kụrụ ihe mkpofu sọlfọ gbazee, nke gbazere mkpọpu ala ahụ. A na-agbanyeghachi olulu ahụ ma mezue ya na Granite Wash site na 11,000 ruo 13,200 ụkwụ dị ka onye na-emepụta gas.Dabere na ndekọ dị mma nke sitere na Kọmitii Oklahoma Corporation, oghere Bertha Rogers kwụsịrị mmepụta gas na July 1997 ma kemgbe a na-egbochi ya ma gbahapụ ya. Ajụjụ: Gịnị bụ Lone Star mgbe a na-egwu mmiri?
25,000 psi