Features of the geological structure of an oil and gas condensate field in Tomsk region
https://doi.org/10.31660/0445-0108-2021-4-48-60
Abstract
The X oil and gas condensate field is located in Parabel district of Tomsk region; the field is large in terms of recoverable reserves. Oil and gas content is confined to Jurassic sediments of Tyumen suite and Vasyugan suite. The reservoirs of the Vasyugan suite are marine and coastal-marine sediments, characterized by alternating sandstones, mudstones, siltstones, clays and exhibit complex internal aging. The productive deposits of the Tyumen suite are of continental origin and are distinguished by significant lithological variability. One oil deposit (J11 stratum), one gas and oil deposit (J12 stratum) and three gas condensate deposits (J13-4, J3, J4-5 strata) were identified in the productive formations. The article analyzes the features of the geological structure and conditions of sedimentation of productive strata. In terms of its phase state and physicochemical proper-ties, the fluid of the J11 deposit is a "volatile oil", phase state of which is close to the near-critical. Reservoirs of productive formations are of terrigenous type, porous, low-permeability, while the oil productivity of the formations is high due to the ultra-low oil viscosity.
About the Authors
S. F. Mulyavin
Industrial University of Tyumen
Russian Federation
Russian Federation
Semen F. Mulyavin, Doctor of Engineering, Professor at the Department of Development and Exploitation of Oil and Gas Fields.
Tyumen
A. V. Byakov
MNP GEODATA LLC
Russian Federation
Russian Federation
Aleksandr V. Byakov, Head of Oil and Gas Fields Development Department.
Tyumen
R. A. Neschadimov
Industrial University of Tyumen
Russian Federation
Russian Federation
Roman A Neschadimov, Master's Student.
Tyumen
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Review
For citations:
Mulyavin S.F., Byakov A.V., Neschadimov R.A. Features of the geological structure of an oil and gas condensate field in Tomsk region. Oil and Gas Studies. 2021;(4):48-60. (In Russ.) https://doi.org/10.31660/0445-0108-2021-4-48-60
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