Forecast of hydrocarbons non-folded traps in Upper Visean deposits of Dnipro-Donets depression

Abstract

Favorable geological preconditions for accumulation of accumulative sand bodies–reservoirs were studied and conditions of formation of related to them lithological, stratigraphic and combined oil and gas traps on the slopes of large near-axial troughs. Features of the geological structure of Upper Visean deposits on the northern slope of Ordaniv trough were investigated. A complex methodology of detecting non-anticlinal hydrocarbon traps, which includes paleotectonic, paleogeographic methods, detailed correlation of natural reservoirs by logging data and 3D seismic prospecting, as well as attributive analysis of the wavefield . The case of peripheral part of the West Solohivske gas-condensate field (GCF) shows the effectiveness of the new complex methodology. The hydrocarbon potential of Upper Visean terrigenous deposits was assessed for the area of Ordaniv trough northern slope in the area of West Solohivske structure.