Abstract

Due to the high content of gamma ray in hydrocarbon source rocks, it may be detected by gamma ray or computed gamma ray peaks. In this article, the total organic carbon content of (TOC) of Pabdeh and Gurpi formations was calculated using a ΔlogR technique with three methods including cross-plots of resistivity–sonic, resistivity–density, and resistivity–neutron. This approach was applied for Pabdeh and Gurpi formations in wells A and B in an oil field in Zagros basin of Iran. The results were calibrated with core-derived data. The amount of TOC was compared with spectrometry of uranium, thorium, and potassium. All data were predicted by a neuro-fuzzy technique in these wells.

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