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Within the crystalline basement of the Tatar arch of the East-Russian plate, specific zones are distinguished, which can be attributed to unconventional reservoir zones. According to previous studies, different types of genesis are generated: decompressed zones of destruction of great depths, weathering crusts at the boundary of the sedimentary cover and crystalline basement, fractured permeable zones subjected to later hydrothermal processes, etc. Formation of different types of reservoir zones is associated with...

In connection with finding - out of a question about probable feeding of deposits by hydrocarbons, acting from the basement, the results of integrated geologicalgeochemical research of the dynamics of variation of chemical and geochemical parameters of oils and bitumen from the rocks of sedimentary cover and basement in the zones of probable inflow of hydrocarbons at the central areas of the Romashkino oil field are presented in this work. Also the results of researches on comparative studying of changes in organi...