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- W2096116497 abstract "Elemental concentrations of several inorganic elements were determined in a continuous basis with depth using the Schlumberger gamma-ray spectrometry (GST) and natural gamma-ray spectrometry (NGS) logs in a Santa Fe Energy Company well in the Kern Front field in Bakersfield, California. Logs of Al, Si, Ca, K, Fe, Ti, and non-pore H were processed by a matrix multiplication procedure, used previously for a Venezuelan well, into estimated abundances of quartz, feldspar, calcite, ilmenite, and the clay minerals kaolinite, illite, and smectite. A total of 64 core-plug samples were analyzed for elemental content by x-ray fluorescence and neutron activation analysis and for mineralogy by bulk and < 4 ..mu.. clay x-ray diffraction analyses. Log-derived elemental concentrations and mineral abundances show good agreement with the core values. Cation exchange capacity (CEC) is estimated from the abundances of the clay minerals and typical values for these clays. The CEC log agrees well with CEC values determined on the core samples. The mineral abundance logs also permit an estimation of the average matrix density as a function of depth, derived from typical grain densities for each mineral phase. This matrix density log, combined with the bulk density log, yields a porosity log that comparesmore » well with over 200 measurements on core.« less" @default.
- W2096116497 created "2016-06-24" @default.
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- W2096116497 date "1987-01-01" @default.
- W2096116497 modified "2023-09-26" @default.
- W2096116497 title "Clay and Framework Mineralogy, Cation Exchange Capacity, Matrix Density, and Porosity from Geochemical Well Logging in Kern County, California: ABSTRACT" @default.
- W2096116497 doi "https://doi.org/10.1306/948872c6-1704-11d7-8645000102c1865d" @default.
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