Developing a Wireline-Log Database and a Basis for Determining Reservoir Porosity
Jeffrey A. Kane, James W. Jennings, Jr., 2012. "Developing a Wireline-Log Database and a Basis for Determining Reservoir Porosity", Anatomy of a Giant Carbonate Reservoir: Fullerton Clear Fork (Lower Permian) Field, Permian Basin, Texas, Stephen C. Ruppel
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We present the procedures used to develop an accurate wireline-log database for the Fullerton Clear Fork field reservoir. We first review the borehole logging history of the field then discuss the assembly and quality checking of the log data and normalization of neutron-porosity logs, and calibration to core porosity. The procedures documented here deviate somewhat from the norm in that the assembly of the database and quality control of data occurred concurrent with data interpretation. Because of the complex nature of the field data, traditional log-normalization methods were not adequate. A method of normalization is described that is a modification of traditional methods, which overcomes the unique problems of the Fullerton Clear Fork reservoir.
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Anatomy of a Giant Carbonate Reservoir: Fullerton Clear Fork (Lower Permian) Field, Permian Basin, Texas
Despite declining production rates, existing reservoirs in the United States contain large quantities of remaining oil and gas that constitute an enormous target for improved diagnosis and imaging of reservoir properties. The resource target is especially large in carbonate reservoirs, where con entional data and methodologies are normally insufficient to resolve critical scales of reservoir heterogeneity. The objectives of the research described in this volume were to develop and test such methodologies for improvedimaging, measurement, modeling, and prediction of reservoir properties in carbonate hydrocarbon reservoirs. The focus of the study is the Permian Fullerton Clear Fork reservoir of the Permian Basin of west Texas. This reservoir is an especially appropriate choice because the Permian Basin is the la gest oil-bearing basin in the United States and, as a play, Clear Fork reservoirs have exhibited the lowest recovery efficiencies of all carbonate reservoirs in the Permian Basin.