Geochemistry of Organic Matter in Permian Deposits in the Northeast of Korotaihinsky Depression

Kotik, I.S.; Kotik, O.S.; Valyaeva, O. V.

doi:10.18599/grs.18.2.8

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“…In comparison with the entire Permian terrigenous complex on the studied territory, the Artinskian deposits, which contain predominantly marine OM, have an initially higher hydrocarbon (oil) potential. The Kungurian coalbearing strata generally have a low hydrocarbon potential [11,12]. Increased values are only noted in local areas of the northern regions (Vorkutsky), where the proportion of liptinite components in the OM increases [10][11][12].…”

Section: Organic Matter Composition and Its Hydrocarbon Potentialmentioning

confidence: 99%

“…The Kungurian coalbearing strata generally have a low hydrocarbon potential [11,12]. Increased values are only noted in local areas of the northern regions (Vorkutsky), where the proportion of liptinite components in the OM increases [10][11][12]. The total assessment of the possible hydrocarbon generation of an oil character will be significantly higher in the Artinskian complex than in the coal-bearing one due to the predominance of type I-II of the initial OM and catagenetic transformation sufficient for fluid generation.…”

Section: Organic Matter Composition and Its Hydrocarbon Potentialmentioning

confidence: 99%

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Organic matter, its generation potential, and the composition of the Artinskian deposits of the north of the Pre-Ural Foredeep (Timan-Pechora Province)

Kotik

Saldin²

2022

Vestnik of Geosciences

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This article discusses the results of lithological and geochemical studies of the Artinskian deposits and organic matter, which is a part of the petroleum source rocks of the northern part of the Pre-Ural Foredeep of the Timan-Pechora Province. The rocks are very diverse in composition (clastolites, pelitolites, carbonatolites and mixtolites) and structural and textural features. Mixtoliths are widespread in shallow-marine environments (lower molasse deposits), which are associated with mixed terrestrial and marine organic matter. We recorded the predominance of poor and fair petroleum source rocks due to increasing terrigenous component. Mixtoliths of the Kochmes area (HI of 240 mg HC/g TOC) are characterized by the best generation potential. Organic petrography studies indicate the predominance of bituminite (sapropel base) in the composition of organic matter, the terrigenous components dominates in the eastern regions adjacent to the Urals.

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