Geoflyuidodynamic system of the Dnieper-Donets basin – formation and development

Abstract

The Dniper-Donetsk cavity (as a basic structure- tectonic element of oil-and-gas bearing province) is an integral part of the complement of the Rifocinum systems of the Eastern Europe platform and is an area of intensive alteration of the earth's crust and overhead mantle.

Up till now within the limits of the cavity more than 200 deposits of oil and gas have been found in a wide stratum range in Jurassic-Devonian and crystalline foundation rocks.

Tectonic activity in time is inferior to certain periodicity. On a background large periods rows are distinguished of more shallow cycles, including the epochs of descending motions with the accumulation of powerful layers of sedimentary rocks and active display of the differentiated ascending motions, attended with erosive interruptions, new intensive deformation of sedimentary rocks by hydrochloric tectonics, crushing of foundation and sedimentary cover.

Dniprovsko-Donetsk Depression is a part of the East European platform. It is an area of intensive dislocation of the crust and the upper mantle.

The components of the given geological structure of the oil- and-gas-bearing basin, i.e. geological structure – rock – water – oil – gas, are in continuous interaction. The availability of hydrocarbon deposits depends on an active dynamic medium and space-time order of certain events and processes that occur when the system develops.

The criteria of the underground mineral synthesis and pulsating flow of hydrocarbons into a sedimentary rock are determined by the distribution of stable isotopes 13 C/12C in the whole variety of hydrocarbons.

Any prospects to find new types of deposits depend on the location of geodynamic layers of oil-and-gas accumulation, as well as on favorable structural and lithofacies conditions of natural reservoirs.

Educed features of isotopic composition of hydrocarbon and thermodynamical calculations of design of the system with С - Н in the conditions of high temperatures and pressures allow more reasonably to develop conception of mineral origin of oil and gas.

By the fundamentally new element of model of distribution of beds of hydrocarbon and hydrocarbon deposit in the Dniper-Donetsk cavity there is set about periodic zonality, tectonic exfoliation cut, which is determined by wave fluctuating motions and formation of resonance areas of the dynamic fields of tensions.