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Houston Geological Society Bulletin

Abstract


Houston Geological Society Bulletin, Volume 33, No. 8, April 1991. Pages 18-18.

Abstract: Pennsylvanian Cycle Stratigraphy and Carbonate Facies Control of Reservoir Development in the Salt Creek Field, Kent County, Texas

By

Dale A. Walker

The Salt Creek Field is located in Kent County, approximately 150 miles northeast of Midland, Texas. Salt Creek was discovered using surface mapping and recognition of the producing trend established by the Kelly Snyder (SACROC) Field. The Salt Creek Field has been a prolific producer since its discovery well, Previous HitCarolineTop Hunt Trust Estate C-1, flowed 2184 barrels of oil per day in April 1950. The field was unitized in 1952, and in 1953 a centerline injection pattern was initiated to maintain reservoir pressure. As recently as 1988, daily production for the field exceeded 31,000 barrels of oil, and yearly production was over 10.6 million barrels of oil.

Numerous geological and engineering studies have been performed on Salt Creek since its discovery. It was recognized quite early that Salt Creek consisted of multiple producing zones. The most productive intervals are oolitic grainstones. However, correlation of oolitic grainstones is difficult because oolites deposited at different times are lithologically similar. Correlations based strictly on well log curves and facies information were not accurate. It was decided to recorrelate the producing units at Salt Creek using additional lithologic and paleontologic information gained from infill wells. The purpose was to use these new correlations to assist in locating development wells, completion of drilled wells, determining what zones to test with workovers, and to optimize the waterflood.

One of the primary goals of this study was to recorrelate the reservoir internally using biostratigraphic zones to distinguish lithostratigraphic units. In addition, it became apparent that the reservoir contained numerous shoaling-upward cycles. From the biostratigraphic zones, it appears that these cycles correlate with other Pennsylvanian sequences on the Eastern Shelf of Texas and midcontinent of North America.

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