Geology, petrology and reservoir characteristics of Marchand sandstone in Grady and Caddo counties, Oklahoma

Conference · Wed Sep 01 04:00:00 EDT 1971 · Am. Assoc. Pet. Geol., Bull.; (United States)

OSTI ID:5518491

Graff, T

Marchand Sandstone (Pennsylvanian-Missourian) oil production was discovered in 1967 at NE. Verden, T8N, R8W, Grady County, Oklahoma. The fields are on the E. flank of the E. end of the deep Anadarko Basin. At the end of May 1971, 74 producing wells had been completed on 160-acre spacing in a producing trend extending over 15 miles from just west of Chickasha in T6N, R8W, to Dutton townsite in T9N, R9W. The Marchand is a fine- grained, well-sorted sandstone and is generally highly laminated with shale. Silt and clays are found in the matrix. Regional correlations and examinations of samples, cores, and thin sections lead the writer to believe that the sandstone is of deltaic origin. The deltaic deposition apparently was complicated by channeling and offshore bar development. The trap appears to be purely stratigraphic. Marchand Sandstone pay thicknesses range up to 125 ft. The reservoir is undersaturated and oil wet with solution gas drive. Gas/oil ratios are approx. 700:1 and original bottomhole pressures between 4,600 and 6,300 psi.

• Research Organization: Amarex Inc
• OSTI ID: 5518491
• Report Number(s): CONF-7109106-
• Conference Information: Journal Name: Am. Assoc. Pet. Geol., Bull.; (United States) Journal Volume: 55:9
• Country of Publication: United States
• Language: English

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