... microscopy. Results As a result of several studies, the lithological features of the productive formation AC5 in frolovskaya suite of the barremian stage of lower cretaceous were analyzed, according to core material of three samples. Сonclusions The quartzose graywackes with high content of organic coalifield are considered to be the lithological types of the reservoir. Pore-filling of the grains is the reason for high reservoir porosity and permeability. The reservoir porosity and permeability, ...

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