No.1(45),2026 PP.96-114

Neftyanaya provintsiya No. 1(45), 2026

Features of interpreting the mineral composition of carbonate rocks: using the example of reservoirs in the Yuryakh Formation

O.G. Mikhalkina, D.R. Krayn, R.F. Ilgil’din, I.A. Mosolov,D.A. Pushkareva, T.D. Khabibullin
DOI: https://doi.org/10.25689/NP.2026.1.96-114

Abstract

In this study, the significance of integrated lithological and mineralogical investigations of carbonate rocks is examined for addressing both scientific and applied problems of geology and hydrocarbon field development. The research focuses on carbonate reservoirs of the Yuryakh Formation (Upper Vendian–Lower Cambrian) within the Nepa-Botuoba petroleum province. In several cases, comparison of analytical data obtained using different methods revealed discrepancies in determining the mineral composition of carbonate rocks. These inconsistencies are attributed to specific features of the dolomite crystal structure. The determined unit-cell parameters indicate the presence of isomorphic substitutions within the dolomite lattice. The identified characteristics must be taken into account when reconstructing depositional environments, analyzing secondary alteration processes, studying the filtration, reservoir and geomechanically properties of carbonate rocks, as well as when planning acid treatments and solving other applied and scientific tasks.

Key words:

Carbonate rocks, carbonate reservoirs, Eastern Siberia, Nepa–Botuoba anteclise, Yuryakh Formation, dolomite, XRD, XRF, SEM, thermal stability, acid resistance

References

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3. Zdobin, D.Yu., Fedorova, N.N., & Sokolova, Yu.Yu. (2017). Laboratory methods for determining carbonate content in soils and sediments. Soil Science (Gruntovedenie), 1(9). (in Russian)

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Authors

O.G. Mikhalkina, PhD (Chemistry), Deputy Head of the Moscow Center for Reservoir Systems Studies (Core and Fluids), Gazprom VNIIGAZ LLC
Bld. 15, Str. 1, Gazovikov St., Razvilka Settlement, Leninsky Urban District, Moscow Region, 142717, Russian Federation
E-mail: O_Mikhalkina@vniigaz.gazprom.ru

D.R. Krayn, Head of the Moscow Center for Reservoir Systems Studies (Core and Fluids), Gazprom VNIIGAZ LLC
Bld. 15, Str. 1, Gazovikov St., Razvilka Settlement, Leninsky Urban District, Moscow Region, 142717, Russian Federation
E-mail: D_Krain@vniigaz.gazprom.ru

R.F. Ilgil’din, Deputy Head of the Department for Geology, Field Development, Licensing, and Subsurface Use, Gazprom Dobycha Orenburg LLC
1/2 Chkalova St., Orenburg, 460058, Russian Federation
E-mail: r.ilgildin@gdo.gazprom.ru

I.A. Mosolov, Researcher, Laboratory for Integrated Core Studies, Gazprom VNIIGAZ LLC
Bld. 15, Str. 1, Gazovikov St., Razvilka Settlement, Leninsky Urban District, Moscow Region, 142717, Russian Federation
E-mail: I_Mosolov@vniigaz.gazprom.ru

D.A. Pushkareva, PhD (Geology and Mineralogy), Leading Researcher, Laboratory for Integrated Core Studies, Gazprom VNIIGAZ LLC
Bld. 15, Str. 1, Gazovikov St., Razvilka Settlement, Leninsky Urban District, Moscow Region, 142717, Russian Federation
E-mail: D_Pushkareva@vniigaz.gazprom.ru

T.D. Khabibullin, Junior Researcher, Laboratory for Integrated Core Studies, Gazprom VNIIGAZ LLC
Bld. 15, Str. 1, Gazovikov St., Razvilka Settlement, Leninsky Urban District, Moscow Region, 142717, Russian Federation
E-mail: T_Khabibullin@vniigaz.gazprom.ru

For citation:

O.G. Mikhalkina, D.R. Krayn, R.F. Ilgil’din, I.A. Mosolov,D.A. Pushkareva, T.D. Khabibullin Osobennosti interpretatsii mineralnogo sostava karbonatnykh porod na primere kollektorov yuryakhskoy svity [Features of interpreting the mineral composition of carbonate rocks: using the example of reservoirs in the Yuryakh Formation]. Neftyanaya Provintsiya, No. 1(45), 2026. pp. 96-114. DOI https://doi.org/10.25689/NP.2026.1.96-114. EDN YRPDZU (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/)

Features of interpreting the mineral composition of carbonate rocks: using the example of reservoirs in the Yuryakh Formation O.G. Mikhalkina, D.R. Krayn, R.F. Ilgil’din, I.A. Mosolov,D.A. Pushkareva, T.D. Khabibullin DOI: https://doi.org/10.25689/NP.2026.1.96-114

Key words: Carbonate rocks, carbonate reservoirs, Eastern Siberia, Nepa–Botuoba anteclise, Yuryakh Formation, dolomite, XRD, XRF, SEM, thermal stability, acid resistance

Features of interpreting the mineral composition of carbonate rocks: using the example of reservoirs in the Yuryakh Formation

O.G. Mikhalkina, D.R. Krayn, R.F. Ilgil’din, I.A. Mosolov,D.A. Pushkareva, T.D. Khabibullin
DOI: https://doi.org/10.25689/NP.2026.1.96-114

Key words:

Carbonate rocks, carbonate reservoirs, Eastern Siberia, Nepa–Botuoba anteclise, Yuryakh Formation, dolomite, XRD, XRF, SEM, thermal stability, acid resistance