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PALEOZOIC-MESOZOIC TECTONICS AND FLUID DYNAMICS MODELING FOR WEST SIBERIAN BASIN BASED ON SEISMIC DATA

М. Yu. Zubkov

West-Siberian Geological Center, Ltd, Tyumen, Russia

Results of the tectonophysical modeling of the formation of most common structural associations in the basement and sedimentary cover of Western Siberia inferred from seismic exploration data are considered. The two modeling techniques involved therein are the polarization-optical and tectonic-sedimentation methods. The nature and patterns of the distribution of stresses caused by progressive evolution of various anticlinal structures were investigated. The mechanism of formation of rock decompaction zones with related epigenetic fracturing and predictable orientation patterns, as well as fracture density in these areas, were established. The features of fluid dynamics occurring in systems with specific fluid phase and compositions controlled by the thermodynamic conditions of rock mass are characterized. The proposed hypothesis on active involvement of tectonics and fluid dynamics in the generation, migration and formation of hydrocarbon accumulations and fields significantly complements the existing sedimentary-migration hypothesis, which enables higher predictive potential of both hypotheses in hydrocarbon prospecting and exploration.

Keywords: fluid dynamics, tectonophysics, tectonophysical modeling, seismic exploration data.

DOI 10.20403/2078-0575-2025-3-36-49

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