GEOCHEMISTRY AND PETROLEUM POTENTIAL OF ORGANIC MATTER OF TRIASSIC-JURASSIC DEPOSITS IN THE NORTH SOS'VA REGION (West Siberia)
V.I. Moskvin, E.A. Kostyreva, M.A. Levchuk, A.N. Fomin, E.N. Ivanova, and E.A.Zubova
Institute of Petroleum Geology, Siberian Branch of RAS, 3 prosp. Akad. Koptyuga, Novosibirsk, 630090, Russia
Keywords: Oil formation, organic matter, biomarker hydrocarbons, bitumen, catagenesis, North Sos'va region, West Siberia
Pages: 805-812
Abstract
Insoluble organic matter (OM) and bitumens of the Jurassic and Triassic deposits at the western margin of the West Siberian basin were examined for the first time at the molecular level. Biomarker hydrocarbons were studied in a wide range. It has been established that OM of the sea Danilovo Formation and continental Tol', Yany-Man', and Yatra Formations is of mixed nature, with remains of higher land vegetation playing a significant role. The remains are predominant in continental deposits. It has been shown that the organic matter in these sequences was not mature enough to initiate the mass primary migration of hydrocarbons.
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