Evolution of Hydrocarbon Systems Within the Eastern Part of the Scythian Plate

Abstract

On the basis of the performed 2D modeling, the authors established the main spatiotemporal regularities of the development of the processes of generation, migration and accumulation of hydrocarbon fluids in the platform part of the Eastern Ciscaucasia. The modeling results showed the saturation with hydrocarbons of the terrigenous strata of the Anisian and Landian stages, terrigenous sediments of the Middle Jurassic, Lower Cretaceous, as well as a single saturation of carbonates of the Upper Cretaceous and Lower Maikop, probably associated with the development of areas of abnormally high reservoir pressures. The degree of rock saturation is relatively high and reaches 80% for the sandy strata of the Middle Jurassic. For carbonate-terrigenous sediments of the Middle Triassic, saturation varies from 45-65%.