НЕФТЯНАЯ ПРОВИНЦИЯ

Lithological and mineralogical heterogeneity of Lower Berezovskian subseries of Medvezhye and Kharampurskoye fields

N.V. Nassonova, D.v. Yanovskiy, M.yu. Novoselova, A.O. Gordeev

DOI: https://doi.org/10.25689/NP.2021.4.1-21

Abstract

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​The content of opal-cristobalite-tridymite (opal-CT phase), quartz, montmorillonite, and glauconite in Lower Beresovskian subseries of the Kharampurskoye and Medvezhye field differ substantially. Studies conducted in different laboratories revealed the general trend. Relationships between mineral composition (opal-CT phase and quartz) and amplitude of tectonic movements, as well as between quartz and clay content were established. In Lower Berezovskian subseries of Kharampurskoe field lithogenetic and tectonic fractures were encountered. NB1 formation exhibited the largest intensity of tectonic fracturing. Clay content in NB formation was observed to increase from 19% in Kharampurskoye field to 30% in Medvezhye field. This increase in clay content was assumed to be related to the effect of other Coniacian-Santonian marine sediments carried over to Upper Cretaceous West Siberian basin.

Key words:

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Kharampurskoye field, Medvezhye field, Lower Berezovskian subseries, argillaceous-siliceous reservoir, opal-cristobalite-tridymite phase, quartz, X-ray diffraction analysis, microfracture clusters, tectonic processes, Transeuropean shift

References

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Authors

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N.V. Nassonova, Ph.D., Tyumen Petroleum Research Center

79/1, Osipenko st., Tyumen, 625002, Russian Federation

E-mail: NVNassonova@tnnc.rosneft.ru

 

D.V. Yanovskiy, Tyumen Petroleum Research Center

79/1, Osipenko st., Tyumen, 625002, Russian Federation

E-mail: dvyanovskiy@tnnc.rosneft.ru

 

M.Ju. Novoselova, Tyumen Petroleum Research Center

79/1, Osipenko st., Tyumen, 625002, Russian Federation

E-mail: mynovoselova@tnnc.rosneft.ru

 

A.O. Gordeev, Tyumen Petroleum Research Center

79/1, Osipenko st., Tyumen, 625002, Russian Federation

E-mail: AOGordeev@tnnc.rosneft.ru

For citation:

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N.V. Nassonova, D.v. Yanovskiy, M.Yu. Novoselova, A.O. Gordeev Neodnorodnosti litologo-mineralogicheskogo sostava nizhneberezovskoj podsvity Medvezh'ego i Harampurskogo mestorozhdenij [Lithological and mineralogical heterogeneity of Lower Berezovskian subseries of Medvezhye and Kharampurskoye fields]. Neftyanaya Provintsiya, No. 4(28), Part 1, Special issue, 2021. pp. 1-21. DOI https://doi.org/10.25689/NP.2021.4.1-21 (in Russian)