FOCUS: UNCONVENTIONAL OIL & GAS: Industry optimistic on Cline shale liquids potential

US independents, particularly Devon Energy Corp. and Apache Corp., are examining the potential of the Cline shale oil play in the Midland basin. Operators drilling the Wolfcamp and Wolfberry trends see the Cline as offering another pay zone among numerous formations in the Permian basin. The Pennsylvanian-aged Cline shale underlies the Permian-aged Wolfcamp shale. The Cline yields 40-45° gravity crude. The namesake formation of the emerging unconventional play is 9,250 ft below the surface of 10 West Texas counties with Mitchell County being in the center of the play (see map). The Cline reservoir is believed to be 200-550 ft thick. Devon, Apache, and others are optimistic about the fo...

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