Visean palaeoincisions as centers of fluid-generation in the Kama coal basin
https://doi.org/10.18599/grs.2021.2.6
Abstract
The paper considers palaeoincisions in the Turnean limestones of the Volga-Ural basin, made by alluvial-deluvial sediments of the Visean age and containing interlayers of coals. Processes occurring in these sediments (catagenic reduction of thickness of coal beds and coal-bearing mudstones, aggressive influence of products of defluidization of coal organic matter on the host rocks, etc.) strengthen the fluid dynamic heterogeneity of intracrustal deposits and contribute to emigration of hydrocarbons (HC). The main oil-and-gas-generating strata in the Carboniferous section include rocks of the Tournaisian stage and the Bobrikovsky horizon of the Viseian stage. Palaeoincisions, along with the area distribution of Viseian coals, can be considered as centers of fluid generation, including liquid and gas HC.
Keywords
palaeoincisions,
Lower Carboniferous,
Visean Stage,
coals,
carbonaceous argillites,
organic matter,
fluid-generation
Supporting agencies: The article was written within the framework of the state assignment No. АААА-А19-119022890063-9 «Development of scientific and methodological fundamentals for the search of large hydrocarbon accumulations in non-structural traps of a combined type within platform oil and gas basins».
About the Authors
I. F. Yusupova
Institute of Oil and Gas Problems of the Russian Academy of Sciences
Russian Federation
Russian Federation
Iskra F. Yusupova – PhD (Geology and Mineralogy), Senior Researcher
3, Gubkin st., Moscow, 119333
N. P. Fadeeva
Lomonosov Moscow State University
Russian Federation
Russian Federation
Natalia P. Fadeeva – PhD (Geology and Mineralogy), Leading Researcher, Petroleum Geology Department
1, Leninskie gory, Moscow, 119234
L. A. Abukova
Institute of Oil and Gas Problems of the Russian Academy of Sciences
Russian Federation
Russian Federation
Leyla A. Abukova – DSc (Geology and Mineralogy), Director
3, Gubkin st., Moscow, 119333
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Review
For citations:
Yusupova I.F., Fadeeva N.P., Abukova L.A. Visean palaeoincisions as centers of fluid-generation in the Kama coal basin. Georesursy = Georesources. 2021;23(2):67-72. (In Russ.) https://doi.org/10.18599/grs.2021.2.6
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