No.1(45),2026 PP.76-95

Neftyanaya provintsiya No. 1(45), 2026

Prospects for Jurassic pinch-out zones on the northwestern flank of the West-Siberian Province

S.L. Belousov, A.A. Sokolnikova, D.A. Sidorov, A.A. Pankova
DOI: https://doi.org/10.25689/NP.2026.1.76-95

Abstract

The flank zones of the West Siberian Petroleum Province are of great interest for the exploration of large hydrocarbon accumulations. The western flank zone illustrates the geological preconditions for the formation of vast oil and gas accumulation areas. Upward areal sequential stratigraphic pinching-out of promising accumulations contributes to the formation of stratigraphically screened structural traps. Insufficient geological and geophysical knowledge increases the uncertainty in interpreting the locations of areal stratigraphic pinching-out lines, creating significant geological risks during exploration. The authors have built maps of estimated promising zones and traps for seven Jurassic horizons, as well as a summary map of oil and gas potential, which is of particular interest for planning further exploration. Resources have been estimated for promising targets, and a probabilistic resource assessment has been made. Approximately 70% of the total resource potential is concentrated in stratigraphically screened structural traps within the study area.

Key words:

reservoir, trap, accumulation, field, Jurassic reservoirs, structure, stratigraphic pinching-out, geological and geophysical knowledge

References

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Authors

S.L. Belousov, geology expert, RN – Geology Research Development
42 Maksima Gor'kogo St., Tyumen, Russian Federation
E-mail: SLBelousov@rn-gir.rosneft.ru

A.A. Sokolnikova, head of department, RN – Geology Research Development
42 Maksima Gor'kogo St., Tyumen, Russian Federation
E-mail: aasokolnikova@rn-gir.rosneft.ru

D.A. Sidorov, candidate of geological and mineralogical sciences, expert, RN – Geology Research Development
42 Maksima Gor'kogo St., Tyumen, Russian Federation
E-mail: dasidorov3@rn-gir.rosneft.ru

A.A. Pankova, chief specialist, RN – Geology Research Development
42 Maksima Gor'kogo St., Tyumen, Russian Federation
E-mail: aapankova@rn-gir.rosneft.ru

For citation:

S.L. Belousov, A.A. Sokolnikova, D.A. Sidorov, A.A. Pankova Perspektivy zon vyklinivaniya yurskikh otlozheniy na severo-zapadnom bortu Zapadno-Sibirskoy pro-vintsii [Prospects for Jurassic pinch-out zones on the northwestern flank of the West-Siberian Province]. Neftyanaya Provintsiya, No. 1(45), 2026. pp. 76-95. DOI https://doi.org/10.25689/NP.2026.1.76-95. EDN YSMYJB (in Russian)

© Non-governmental organization Volga-Kama Regional Division of the Russian Academy of Natural Science, 2015-2026 All the materials of the journal are available under the Creative Commons Attribution 4.0 License (https://creativecommons.org/licenses/by/4.0/)

Prospects for Jurassic pinch-out zones on the northwestern flank of the West-Siberian Province S.L. Belousov, A.A. Sokolnikova, D.A. Sidorov, A.A. Pankova DOI: https://doi.org/10.25689/NP.2026.1.76-95

Key words: reservoir, trap, accumulation, field, Jurassic reservoirs, structure, stratigraphic pinching-out, geological and geophysical knowledge

Prospects for Jurassic pinch-out zones on the northwestern flank of the West-Siberian Province

S.L. Belousov, A.A. Sokolnikova, D.A. Sidorov, A.A. Pankova
DOI: https://doi.org/10.25689/NP.2026.1.76-95

Key words:

reservoir, trap, accumulation, field, Jurassic reservoirs, structure, stratigraphic pinching-out, geological and geophysical knowledge