Source rocks and oils in eastern part of West Siberia

Authors: I.V. Goncharov, N.V. Oblasov, V.V. Samoylenko, S.V. Fadeeva (TomskNIPIneft JSC), V.A. Krinin (Vankorneft CJSC), V.A. Volkov (V.I. Shpilman Scientific and Analytical Centre of Rational Subsurface Management)
Geochemical investigations of oils and Cretaceous, Jurassic and Pre-Jurassic rocks were performed for eastern part of West Siberia. A role of different source rocks in oil and gas formation was evaluated based on Rock-Eval pyrolysis results and distribution types of oil in a territory. Showed that source rocks are absent among Cretaceous deposits. Jurassic and Pre-Jurassic rocks were a main source for oil.
Geochemical investigations of oils and Cretaceous, Jurassic and Pre-Jurassic rocks were performed for eastern part of West Siberia. A role of different source rocks in oil and gas formation was evaluated based on Rock-Eval pyrolysis results and distribution types of oil in a territory. Showed that source rocks are absent among Cretaceous deposits. Jurassic and Pre-Jurassic rocks were a main source for oil.


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