Abstract

The article reviewed the phase zonation of the distribution of hydrocarbons in natural reservoirs in the southern part of the Timan-Pechora plate (Verkhnepechorskaya and Izhma-Pechora depressions) and the Timan ridge (Ukhta-Izhemsky wall) from the standpoint of the Maximov-Savchenko-Gassou principle of differential hydrocarbon entrapment. Undoubtedly, the formation of oil and gas deposits is a very complex process and at the same time the principle of differential entrapment is a special case in nature. However, the distribution of hydrocarbons accumulations of various phase states formed according to the principle of differential entrapment is quite often observed in the trap chain, so that the spacing of oil and gas accumulations fits well into this concept and works for the above-mentioned structures. Keywords: migration and accumulation of hydrocarbons; principle of differential entrapment of hydrocarbons; phase zonation; oil density.

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