Significance of nuclear geophysical methods in solving problems of classification and evaluation of parameters of oil and gas reservoirs

Possibilities of using specimen-recognition programmes and multidimensional regressive analyses in processing geophysical exploration data are discussed. The informativeness of nuclear techniques in solving problems of locating gas-bearing reservoir rocks and evaluating their parameters is determined. A qualitative and methodological analysis of the notion of informativeness of individual components of a set of geophysical explorations is presented. The notion of the informativeness of the i-th characteristic of a set in solving particular problems in combination with other characteristics is analyzed. Problems of classifying the carbonate deposits of the Adamtash field into gas-bearing, water-bearing and dry ones are considered. Possibilities of reducing the set of nuclear techniques are studied using the carbonate reservoir rocks of Tadzhikistan as an example. Multidimensional relations between the porosity determined by coring data and geophysical-exploration characteristics have been investigated. The non-informativeness of gamma-logging and neutron-gamma logging data in the case of double and multidimensional relations has become evident in the study