Hydrocarbon Systems of The Azov-Kuban Sag

Abstract

Summary Generation-accumulation systems on the territory of the Azov-Kuban trough are considered - areas of prolonged and stable subsidence in the Mesozoic and Cenozoic, which represent a typical foreland basin, in which, according to the results of geological and geochemical studies and modeling, depot centers are distinguished, combined into four generation-accumulation hydrocarbon systems: Triassic-Jurassic, Cretaceous, Eocene and Maikop. To assess the geochemical conditions of the oil and gas content of the Meso-Cenozoic sediments, chemical-bituminological, pyrolytic and coal-petrographic studies of core and rock samples were carried out. The results of modeling made it possible to study and model the elements and processes of hydrocarbon systems in the Meso-Cenozoic time in the western part of the Crimean-Caucasian region. It was found that stretched catagenetic zoning is typical for the areas of depression, which is due to high rates of sedimentation and subsidence, and, accordingly, a large thickness of oil source deposits in the source of oil formation.To predict and assess the possibility of hydrocarbon generation, in addition to the qualitative and quantitative characteristics of the oil and gas source stratum and the level of their catagenetic transformation, the degree of depletion of organic matter, which characterizes the residual potential of the oil and gas source stratum, was investigated.