Characteristics of trapping magmatism within the fields of the Angara-Lena oil- and gas-bearing region according to drilling and 3D seismic exploration data
UDC: 551.7:551.243.4+553.98(571.56)
DOI: 10.33285/2413-5011-2022-6(366)-5-10
Authors:
SMIRNOV OLEG A.
1,
BORODKIN VLADIMIR N.2,3,
PLAVNIK ANDREY G.2,3,
LUKASHOV ANDREY V.1,
FARYSHOVA IRINA A.1,
VASILIEV YURIY V.2
1 LLC "INGEOSERVICE", Tyumen, Russia
2 A. Trofimuk Institute of Petroleum Geology and Geophysics, the West-Siberian branch of the Russian Academy of Sciences, Tyumen, Russia
3 Tyumen Industrial University (TIU)
Keywords: Angara-Lena oil- and gas-bearing region, Chikanskoye field, trap magmatism, horizon, seismic horizon
Annotation:
Based on 3D seismic survey and drilling data in the central part of the Angara-Lena oil- and gas-bearing region, the article traces the boundary of the areal distribution of the Usol trap sill.
The performed analysis of the thicknesses between the top of the Osinskiy Horizon and the top of the Teter Formation showed that the thicknesses of the Lower-Middle Usol Subformation increase with the thickness of the intrusion. It has been established that the trap body contains layers of dolomites.
A change in the configuration of the underlying OV B in the area of the development of the trap body was traced on seismic sections.
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