The article examines the amount of oil saturation in the Gunashli field, which is part of the Absheron oil and gas region, and analyzes various two- and three-dimensional models of geological section. The purpose of the study is aimed to determine the values of the oil saturation coefficient in the reservoir layers, which is one of the petrophysical quantities. The intermediate range of this quantity has been determined. Determination of petrophysical quantities of reservoir layers of Gunashli field has been considered in various research works. These studies were conducted during exploration in the field, as well as during the drilling of production wells. In the mentioned periods, the research work was applied with the programs and approaches used at that time. In the article, the programs and approaches used in recent times have been applied to the geophysical data of the Gunashli field and the accuracy of the obtained results has been increased. Keywords: petrophysics, oil and gas saturation, rock, reservoir, correlation