The dissertation is devoted to the study of geodynamic conditions of oil and gas accumulation and structure formation during the structural and kinematic evolution of DDP at the Phanerozoic on the basis of the original complex of geological and indirect tectonophysical, geophysical, remote methods of analysis of disjunctive and plicative dislocations. Dynamic conditions, tectonic regimes and kinematic mechanisms of geological evolution of the continental earth's crust are established on the example of DDP.
During the stages of platform activation, inversion complications of the rift structure take place. They are controlled by a deformation tectonic framework composed of reverse faults, which are characterized by curvature, numerical branches, changes in genetic type and kinematics of movements along the wings, the predominance of horizontal amplitudes over vertical, the formation of rocker systems in plan and "flower structures" in section. In the zones of their dynamic influence, inversion disjunctive and folded zones are formed - mantle (near-fault and interfault) and linear (strike-slip fault).
Due to the manifestation of spatio-temporal inversion of genetic types of tectonic fracture along certain azimuthal directions, geologically closed fault systems are formed, which are structure-forming, and in fault orthogonal directions open fault systems are formed, which serve as ascending heat and mass transfer paths. Geodynamic tensile zones of the earth's crust are formed in the areas of block displacement in opposite directions. In the natural reservoirs of the sedimentary cover, within the zones of inversion folding, favorable geological conditions arise for the formation of secondary pore-fracture reservoirs, the capacity of which is determined by the increased component of tectonic fracture. The inflow of explosives into the useful volumes of the traps occurs due to the unloading in the mode of nadadiabatic expansion of the supercompressed deep fluids. Therefore, the zones of stretching / compression of the earth's crust control the distribution of zones of oil and gas accumulation.
It was found that due to the displacement and rotation of the geoblocks of the earth's crust due to tectonic spreading of geomass of rocks within them in opposite directions along the Verkhovtsy-Lgov deep fault, a regional axis of kinematic symmetry was formed. It controls the geodynamic process of spreading the earth's crust with the separation of two microplates with different kinematics of motion. The Western microplate (Chernihiv and Lokhvytsia segments) with left-hand kinematics and counterclockwise rotation of geoblocks moves to the northwest, but the Eastern (Izium segment and West-Donetsk Graben) with right-hand kinematics and geoblocks rotation half an hour clockwise. The process of tectonic inversion of the DDP is controlled by six linear zones of horizontal-shear control, formed over activated meridional faults. They form an intersegmental tectonic framework such as an advanced tectonic compression fan deployed to the north. This led to the formation of a trapezoidal geodynamic zone of the earth's crust in the central part of the paleorift, where the largest reserves in terms of reserves and hydrocarbons production of the Eastern Ukrainian oil and gas province.
The results of the dissertation research were introduced in the prospecting areas and fields of JSC “Ukrgasvydobuvannya” with a conditional economic efficiency of UAH 1,682,641.1 thousand. The main provisions of the dissertation were introduced by the author into the educational process of V. N. Karazin Kharkiv National University when teaching the discipline "Geological conditions for the formation of oil and gas fields"
Key words: Dnieper-Donetsk paleorift, planetary fracturing lattice, fault systems, tectonophysical methods, geodynamic mode, kinematic mechanism, rifting, tectonic inversion, zones of stretching and compression of the earth's crust, folded zones of inversion deformations.
