Assessment of the prospects of the neocomian sediments for the presence of hydrocarbon fluid through geochemical core studies

This paper presents the results of geochemical studies on core samples from Neocomian sediments located in the northern part of Western Siberia.In traditional geological exploration of deep-submerged facilities with complex geological structures, productive intervals are often overlooked. It underscores the necessity for additional diagnostic methods.The aim of this work is to develop a methodological model for conducting geochemical analysis of core samples to enhance the reliability of detecting valuable hydrocarbon fluids.To achieve this, the authors of this paper selected a set of geochemical studies on core samples, including extraction-weight analysis, chromatographic analysis, and the study of deeply sorbed gases. Based on this approach, the authors developed criteria for identifying the type of reservoir fluid in the reservoir.The conclusions regarding the fluid saturation of the studied deposits were validated by well test results, demonstrating the effectiveness of geochemical methods in exploration efforts.

core, oil, gas condensate, deeply absorbed gases, chloroform bitumen, chromatography, alkanes, arenas