--> ABSTRACT: Variation of Oil Composition in Vicinity of Arbuckle Mountains, Oklahoma, by I. Zemmels and C. C. Walters; #91039 (2010)

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Variation of Oil Composition in Vicinity of Arbuckle Mountains, Oklahoma

I. Zemmels, C. C. Walters

Fifteen oils in an 8-county area in the vicinity of the Arbuckle Mountains were classified into 6 oil types: stable platform type, reservoired in the Simpson Group (Seminole and Cleveland Counties); Mill Creek syncline type, in Simpson Group, Arbuckle Group, and Deese Formation (Garvin, Murray, Carter, and Marshall Counties); Joiner City field type, in Woodford and Bois d'Arc formations (Carter and Jefferson Counties); Gloeocapsamorpha type, in Viola Limestone (Love County); Hoover field A-type in Arbuckle Group (Garvin County); and Fitts field type, in McAllister Formation (Pennsylvania) (Pontotoc County).

The stable platform, Mill Creek syncline, and Joiner City field types have a common element (diminished C32 hopane) and are thought to be derived from distinctly different facies of the Woodford Formation.

The Viola Limestone oil is typical of oil generated from Ordovician rocks. The Hoover field A-type has an element of Ordovician composition and is thought to have been derived from an Arbuckle Group shale. The Fitts field oil has a unique composition and has not been assigned to a source.

The variation of oil composition in the vicinity of the Arbuckle Mountains is attributed to (1) the large number of potential source rocks, (2) the variety of facies going from the stable platform into the southern Oklahoma aulacogen, and (3) biodegradation of oils in shallow reservoirs.

AAPG Search and Discovery Article #91039©1987 AAPG Mid-Continent Section Meeting, Tulsa, Oklahoma, September 27-29, 1987.