Assessment of the component composition of rocks and the total organic carbon content of the Bazhenov Formation to clarify the prospects for its development in the analyzed area based on the results of well logging

Background. The research topic is relevant due to the need to clarify the geological structure and assess the oil and gas potential of the Bazhenov Formation in Western Siberia. Objective. To present a method for estimating the component composition and the total organic carbon content of the Bazhenov Formation, as well as to verify the convergence of the test results of the methodology with core data by calculating a volumetric sediment model. Materials and methods. Results from an extended suite of well logging operations conducted in the final logging interval; results of laboratory core analysis from the Bazhenov Formation interval (density, acoustic, pyrolysis and X-ray diffraction studies). Results. A method was developed for determining components of the Bazhenov Formation deposits, based on calculating clay and total organic carbon content using a hydrogen-index petrophysical model. The obtained results enabled the creation of a detailed 3D model of the anomalous section of the Bazhenov Formation of the survey area, identification of the most promising development intervals, and conclusions about saturation characteristics. The findings were confirmed by pilot production tests of productive formations in well X of the survey area. Conclusions. The proposed method for calculating the content of sediment components of the Bazhenov Formation makes it possible to determine with a high degree the filtration and capacity parameters of the medium with the release of solid organic matter from the pore space, which is necessary to isolate permeable intervals containing mobile oil.