Abelentsev V. Geological conditions of optimization extraction the residual hydrocarbon reserves in the fields of the northeastern near edge zone of the Dnieper-Donets depression

The dissertation is devoted to the definition of geological conditions to optimize the extraction of residual hydrocarbon reserves. In the paper a methodological approach for the construction of the special geological-hydrodynamic models is suggested; it has been found, that hydrocarbon deposits and producing wells are mostly flooded by selective mechanism of stratal water ingress and hydrophoby of reservoir is necessary condition of such flooding; methodological approach of selective flows prediction in deposits area is proposed. The complex parameter for assessing the differentiation of the density of residual hydrocarbons and their volume's on deposits is offered, it allows to evaluate the gas volume, which is concentrated in the deposit's volume per unit (1sq.m) of its area. It has been proposed the location of producing wells bottoms for optimal extraction residual hydrocarbon reserves on the basis of detailed integration geological-hydrodynamic models with concentration areas of the residual reserves, values of the current CGR taking into account the flooding intervals of deposits.