--> ABSTRACT: Reservoir Heterogeneity Within Bartlesville Sandstone, Glenn Pool Oil Field, Creek County, Oklahoma, by Michael D. Kuykendall; #91025 (2010)
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Reservoir Heterogeneity Within Bartlesville Previous HitSandstoneNext Hit, Glenn Pool Oil Field, Creek County, Oklahoma

Michael D. Kuykendall

The extent of reservoir heterogeneity within the Middle Pennsylvanian (Desmoinesian) Bartlesville Glenn Previous HitsandstoneNext Hit in the 160-ac William Berryhill unit was established using more than 70 modern well log suites and 18 cores.

Reservoir characterization of genetic Previous HitsandstoneNext Hit units within the Bartlesville is based on differences in lithologic characteristics, sedimentologic features, Previous HitporosityNext Hit, Previous HitpermeabilityNext Hit, and log-response characteristics. The upper delta-plain depositional setting of the Bartlesville was such that short-distance changes in facies created many small-scale heterogeneities. Recognition of laterally continuous distinct units in the Bartlesville Previous HitsandstoneNext Hit requires integration of well log signatures and rock properties. Although thin intervals of interbedded Previous HitsandstoneNext Hit and shale, and calcite-cemented Previous HitsandstoneNext Hit are discontinuous laterally, they tend to compartmentalize portions of the reservoir.

The Bartlesville Previous HitsandstoneNext Hit is presently a sublitharenite-litharenite, even after its composition has been influenced strongly by diagenetic processes. Previous HitPorosityNext Hit is mostly secondary owing to the dissolution of unstable framework grains. Distribution and general trends of Previous HitporosityNext Hit are affected by changes in composition and pore geometry in particular rock units as well as local changes in depositional trend.

Moderately complex short-distance changes in the Previous HitsandstoneNext Hit units and pore geometries result in reservoir heterogeneity, with imprecise correlation of individual units. However, continuity of these units can be estimated, with a fair degree of confidence, over small areas after logs and rock features are integrated.

Previous HitPorosityNext Hit and Previous HitpermeabilityNext Hit, along with diagenesis, petrophysical, and depositional environmental features, aided in reservoir characterization and contributed to improved implementation and Previous HitpredictionTop of enhanced recovery.

AAPG Search and Discovery Article #91025©1989 AAPG Midcontinent, Sept. 24-26, 1989, Oklahoma City, Oklahoma.