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The AAPG/Datapages Combined Publications Database

AAPG Bulletin

Abstract


Volume: 40 (1956)

Issue: 2. (February)

First Page: 428

Last Page: 428

Title: Geology of Keyes Field, Cimarron County, Oklahoma: ABSTRACT

Author(s): Hershel S. Carver

Article Type: Meeting abstract

Abstract:

The development of the Keyes field as a major gas reservoir in the lower Morrow sand has done much toward instigating the current wildcat play throughout the Hugoton Embayment, and Dalhart and Anadarko basins. This field, although discovered in 1943 by the Pure Oil Company, produced gas with a low 825 BTU, and development stagnated until a subsequent Coltexo discovery of high BTU gas in the upper Morrow (Purdy sand) incited major companies to exploit their leases. The exploitation of the Purdy sand for high BTU gas failed to develop substantial reserves; however, it did succeed in delineating the Keyes sand, although low BTU gas, as a major gas field.

The Keyes is considered to be a blanket clastic sand of Lower Pennsylvanian age, deposited on an erosional surface of late Mississippian time. Pre-Pennsylvanian structure and some later rejuvenation apparently are responsible for the accumulation, with porosity and permeability controlling local production. Stratigraphic conditions vary markedly throughout the columnar section, indicating numerous alternating shallow marine and continental environments of sedimentation. These abrupt facies changes may offer additional zones of production.

Though the Keyes sand is the major producer in the field, the Purdy (upper Morrow) and the Cherokee (lower Des Moines) have been proved for production in parts of the field.

To date, 107 wells have been completed in the Keyes sand, having a calculated reserve of 514,120,000,000 cubic feet of gas.

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