Abstract

The Cement-Chickasha area has yielded large quantities of oil and gas from more than 23 Permian and Pennsylvanian reservoirs since the discovery of the Cement field in 1916. The structural environment for trapping consists of highly faulted and steeply folded Pennsylvanian beds unconformably overlain by gently dipping Permian beds. A large normal fault parallel with the Cement anticlinal axis merges with a thrust at depth. This thrust has displaced the shallow Cement and Chickasha structural axes approximately 2500 ft. N. and E., respectively, of the estimated pre-Pennsylvanian structural axes.

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