Conceptual sedimentation model as the basis of geological correlation in a case study of AT6-8 reservoirs of Beregovoye field in West Siberia
https://doi.org/10.31660/0445-0108-2022-3-23-37
Abstract
For the Beregovoye field (West Siberia, Yamalo-Nenets Autonomous Okrug), a new subsurface geologic model for AT6-8 group of reservoirs in the Lower Cretaceous (Hauterivian-Aptian) interval within Ereyamskaya formation was built following the reprocessing and reinterpretation of 2D and 3D seismic data in 2020, drilling of new wells (new wells, which were drilled after 2016, account for about 10 % of the total well stock that penetrated the AT6-8 reservoirs), updating the structural framework, additional core studies, and revising the well test results. Well log correlation in the AT6-8 interval was based on the reservoirs formation in alluvial and tidal delta plain environments. Multidirectional source areas formed disconnected zones in the net reservoir interval, which controlled the oil and gas content of these reservoirs. Taking into account the results of the geochemical survey, a stage-by-stage approach to hydrocarbon accumulations (light oil and gas condensate) formation was proposed, which led to vertically and laterally varied phase compositions of the discoveries.
About the Authors
A. V. Polishchuk
Tyumen Petroleum Scientific Center LLC
Russian Federation
Russian Federation
Anastasiya V. Polishchuk, Head of Geological Exploration Team, West Siberia Exploration Division
Tyumen
A. E. Sidorov
Tyumen Petroleum Scientific Center LLC
Russian Federation
Russian Federation
Arthur E. Sidorov, Head of Geological Exploration Team, West Siberia Exploration Division
Tyumen
N. V. Nassonova
Tyumen Petroleum Scientific Center LLC
Russian Federation
Russian Federation
Natalia V. Nassonova, Candidate of Geology and Mineralogy, Chief Expert, Expert and Analytical Division
Tyumen
A. N. Fishchenko
Tyumen Petroleum Scientific Center LLC
Russian Federation
Russian Federation
Angelica N. Fishchenko, ActingDeputy General Director for Regional
Geology and Exploration, Head of West Siberia Exploration Division
Tyumen
A. R. Dorokhov
Sibneftegaz JSC
Russian Federation
Russian Federation
Anton R. Dorokhov, Head of Geological Exploration Department
Novy Urengoy
A. E. Gilmutdinov
Sibneftegaz JSC
Russian Federation
Russian Federation
Aydar E. Gilmutdinov, Chief Specialist, Geological and Technical
Works Department
Novy Urengoy
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Review
For citations:
Polishchuk A.V., Sidorov A.E., Nassonova N.V., Fishchenko A.N., Dorokhov A.R., Gilmutdinov A.E. Conceptual sedimentation model as the basis of geological correlation in a case study of AT6-8 reservoirs of Beregovoye field in West Siberia. Oil and Gas Studies. 2022;(3):23-37. (In Russ.) https://doi.org/10.31660/0445-0108-2022-3-23-37
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