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ROLE OF TECTONIC AND HYDROTHERMAL PROCESSES IN THE FORMATION OF GAS POOLS IN THE NORTH OF WESTERN SIBERIA

M. Yu. Zubkov

West Siberian Geological Center, Tyumen, Russia

The generation and storage capacities of Neocomian and Jurassic sediments of the northern part of Western Siberia are evaluated. Variants of biogenic and abiogenic methanogenesis are considered. Tectonic and hydrothermal mechanism of the formation of gas pools in Cenomanian sediments is proposed. The youngest Cenomanian gas pools are predicted to be widespread northward under the Arctic Ocean bed. The method of seismic data integration and tectonophysical modelling based on it is proposed in order to search for hydrocarbon accumulations.

Keywords: Neocomian deposits of the northern Western Siberia, biogenic and abiogenic origin of methane, methoxy group, tectonic and hydrothermal processes.

DOI 10.20403/2078-0575-2022-4-28-45

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