The residual oil saturation of the terrigenous productive deposits of tulskiy, bobrikovskiy, malinovskiy reservoirs of 11 main fields, confined to Kuedino-Chernushinskaya zone of oil and gas accumulation within the southern part of the Bashkir arch of the Perm region is investigated. Generalized residual oil saturation dependences on the gas permeability, open porosity and structural parameter are obtained. It is shown that these dependences allow to estimate the limiting values of the main characteristics of terrigenous oil-saturated reservoirs, such as permeability, porosity, initial oil saturation, within the southern part of the Perm region with rather uniform lithologic-facies conditions of sediments formation.
Key words: residual oil saturation, the initial oil saturation, porosity, dynamic porosity, permeability, displacement efficiency
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