Application of spectrometric gamma-logging data to study oil and gas prospecting well sections

Problems of the use of spectrometric gamma-logging data for the determination of reservoir-rock clayness and mineral content of clays are considered, principles of these data application together with logging data to the determination of reservoir features of beds are discussed. It is shown that spectrometric gamma-logging data allow one to determine more precisely rock clayness and mineral content of clays during porosity study and increases the precision of reservoir features of rock estimation