Geochemistry of organic matter in Carboniferous and Permian sediments of the Anabar-Khatanga petroleum province
Е.А. Kostyreva1, I.S. Sotnich1
Trofimuk Institute of Petroleum Geology and geophysics of Siberian branch of Russian Academy of Sciences (IPGG SB RAS), Novosibirsk, Russia
Keywords: Bitumoids, hydrocarbon biomarkers, Anabar-Khatanga petroleum province, organic geochemistry
Abstract
The article presents the results of the detailed modern geochemical investigation of a representative (both by area and by section) collection of core material from Permian deposits of the Anabar-Khatanga petroleum province. The organic matter of Permian deposits has been firstly shown to be polygenous within all the section and have a different thermal maturation level (stages MC11-AC). It also has exhausted oil and gas generative potential in the most part of the section. The studying deposits contain paraautochthonous and allochthonous bitumoids (chloroform source rock extracts) in addition to autochthonous (syngenetic) ones, that can be the evidence of intensively occurring migration processes. There are also bitumoids with traces of biodegradation in Early Permian deposits from the Yuzhno-Tigyanskaya and Nordvikskaya wells.
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