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Geologic and Economic Case Histories of Upper Devonian Natural Gas Production in Pennsylvania

Keith N. Mangini

The Upper Devonian gas sands of western Pennsylvania have been commercially exploited since the turn of the century. The economic success of this exploitation may be attributed to the existence of multiply-stacked or en echelon reservoirs. The serendipity of development drilling coupled with multiple reservoirs made drilling for Upper Devonian gas very attractive to operators. As a result of many years of concentrated drilling, a current shortage of Upper Devonian developmental prospects exists and is forcing operators to explore nearshore more sporadically deposited Devonian sand reservoirs. The depositional modeling of developed areas can, however, help identify new prospective areas for exploration and development and increase economic success.

AAPG Search and Discovery Article #91031©1988 AAPG Eastern Section, Charleston, West Virginia, 13-16 September 1988.