No.3(43),2025 PP.170-185

Neftyanaya provintsiya No. 3(43), 2025

Brittleness of rocks in the section of the Gydan (Western Siberia)

S.S. Kuzmina, M.D. Subbotin, N.A. Pavlyukov
DOI: https://doi.org/10.25689/NP.2025.3.170-185

Abstract

Understanding the mechanism of fracture formation under loading is important for developing hard-to-recover reserves using hydraulic fracturing. The destruction of brittle rocks allows the formation of a branched network of conductive cracks with a significant contact area, which increases both the coverage coefficient and the productivity index. Thus, preliminary assessment and forecast of rock fragility in the section and over the reservoir area allow optimizing drilling schedules and hydraulic fracturing designs. This article presents the results of assessing the brittleness index of terrigenous deposits of the Tanopchinskaya, Akhskaya and Malyshevskaya formations in the north of Western Siberia. The results of volumetric compression of the core under thermobaric conditions (TBC) were used as the main source of information for the calculations. The brittleness indices were assessed using various methods: based on the mineral composition of core samples; according to acoustic studies and elastic moduli; according to loading experiments. Analysis of the results obtained by various methods allowed to draw conclusions about the interrelation of the characteristics.

Key words:

geomechanics, elastic properties, brittleness index, destruction, fracturing, elasticity and plasticity

References

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Authors

S.S. Kuzmina, Manager, Tyumen Petroleum Research Center LLC
747, PO box, Tyumen, 625000, Russian Federation
E-mail: sskuzmina@tnnc.rosneft.ru

M.D. Subbotin, Manager, Tyumen Petroleum Research Center LLC
747, PO box, Tyumen, 625000, Russian Federation
E-mail: mdsubbotin@tnnc.rosneft.ru

N.A. Pavlyukov, Division head, Tyumen Petroleum Research Center LLC
747, PO box, Tyumen, 625000, Russian Federation
E-mail: napavlyukov@tnnc.rosneft.ru

For citation:

S.S. Kuzmina, M.D. Subbotin, N.A. Pavlyukov Khrupkost gornyh porod v razreze Gydanskogo poluostrova Zapadnoj Sibiri [Brittleness of rocks in the section of the Gydan (Western Siberia)]. Neftyanaya Provintsiya, No. 3(43), 2025. pp. 170-185. DOI https://doi.org/10.25689/NP.2025.3.170-185. EDN OAZNLR (in Russian)

© Non-governmental organization Volga-Kama Regional Division of the Russian Academy of Natural Science, 2015-2025 All the materials of the journal are available under the Creative Commons Attribution 4.0 License (https://creativecommons.org/licenses/by/4.0/)

Brittleness of rocks in the section of the Gydan (Western Siberia) S.S. Kuzmina, M.D. Subbotin, N.A. Pavlyukov DOI: https://doi.org/10.25689/NP.2025.3.170-185

Key words: geomechanics, elastic properties, brittleness index, destruction, fracturing, elasticity and plasticity

Brittleness of rocks in the section of the Gydan (Western Siberia)

S.S. Kuzmina, M.D. Subbotin, N.A. Pavlyukov
DOI: https://doi.org/10.25689/NP.2025.3.170-185

Key words:

geomechanics, elastic properties, brittleness index, destruction, fracturing, elasticity and plasticity