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Book Chapter

Sedimentation, Diagenesis and Porosity Evolution of Carbonate Sands in the Black Lake Field of Central Louisiana

By
J. L. Harbour
J. L. Harbour
Phillips Petroleum Co., 248 Frank Phillips Bldg., Bartlesville, Oklahoma 74004
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R. L. Mathis
R. L. Mathis
Department of Geology, Rensselaer Polytechnic Inst., Troy, New York 12181
1
Present address: Shell Oil Company, P. O. Box 991, Houston, TX 77001.
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Published:
January 01, 1984

Abstract

Lower Cretaceous skeletal and non-skeletal carbonate sands associated with mud-dominanted, caprinid rudist mounds comprise much of the reservoir facies of the Black Lake Field in central Louisiana. Porosity and permeability distribution within the sand facies is controlled by the original depositional setting and resultant sediment fabric, and the subsequent strati graphic and diagenetic history. The dominant porosity type associated with the sand facies is primary interparticle, and the major porosity occluding mechanism is the presence of a mi critic matrix. Other porosity occluding mechanisms include minor cementation and compaction. Deposition of thick overlying shales, along with updip lagoonal muds, apparently formed a diagenetic seal in the Black Lake Field. This seal prevented the downdip migration of calcite cementing meteoric fluids from entering the reservoir, and resulted in the preservation of most primary interparticle porosity within the carbonate sand facies.

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Contents

SEPM Core Workshop Notes

Carbonate Sands-A Core Workshop

Paul M. Harris
Paul M. Harris
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SEPM Society for Sedimentary Geology
Volume
5
ISBN electronic:
9781565762602
Publication date:
January 01, 1984

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