2411-3336 2541-9404 Записки Горного института Journal of Mining Institute Санкт-Петербургский горный университет императрицы Екатерины ΙΙ Empress Catherine II Saint Petersburg Mining University 10.31897/PMI.2021.2.8 pmi-14618 https://pmi.spmi.ru/pmi/article/view/14618 Нефтегазовое дело Oil and gas Modeling the processes of deformation and destruction of the rock sample during its extraction from great depths Моделирование процессов деформирования и разрушения керна при его извлечении с больших глубин Grishchenko Alexey I. Грищенко А. И. Grishchenko Alexey I. gai-gr@yandex.ru 0000-0001-6029-5670 Санкт-Петербургский политехнический университет Петра Великого (СПбПУ) (Санкт-Петербург, Россия) Peter the Great St.Petersburg Polytechnic University (Saint Petersburg, Russia) Semenov Artem S. Семенов А. С. Semenov Artem S. semenov.artem@googlemail.com 0000-0002-8225-3487 Санкт-Петербургский политехнический университет Петра Великого (СПбПУ) (Санкт-Петербург, Россия) Peter the Great St.Petersburg Polytechnic University (Санкт-Петербург, Russia) Melnikov Boris E. Мельников Б. Е. Melnikov Boris E. melnikovboris@mail.ru 0000-0002-7889-1996 Санкт-Петербургский политехнический университет Петра Великого (СПбПУ) (Санкт-Петербург, Россия) Peter the Great St.Petersburg Polytechnic University (Saint Petersburg, Russia) 24 06 2021 2021 248 243 252 02 12 2020 21 04 2021 24 06 2021 © Alexey I. Grishchenko, Artem S. Semenov, Boris E. Melnikov 2021 А. И. Грищенко, А. С. Семенов, Б. Е. Мельников Alexey I. Grishchenko, Artem S. Semenov, Boris E. Melnikov CC BY 4.0 https://pmi.spmi.ru/pmi/article/view/14618

В статье проводится исследование изменения геофизических свойств горных пород в процессе подъема керна с больших глубин. Оценка изменения эффективных упругих свойств, пористости и проницаемости кернов при подъеме производилась путем конечно-элементного моделирования. На основе методов линейной механики разрушения произведена оценка критических размеров и ориентации внутренних дефектов, приводящих к разрушению керна при подъеме с больших глубин. Предложен подход, позволяющий оценить расчетным путем изменение механических свойств, пористости и трещиноватости пород-коллекторов в процессе подъема керна с глубин на поверхность. Использование уточненных данных о механических свойствах извлекаемых образцов пород позволяет повысить точность цифровых геологических моделей, необходимых при выполнении геологоразведочных работ, определении коллекторских свойств и нефте-, газонасыщенности месторождения, разработки залежей нефти и газа. Применение таких моделей является особенно актуальным на всех этапах при разработке месторождений с трудноизвлекаемыми запасами.

Article investigates the change in the geophysical properties of rocks in the process of extracting the rock sample from great depths. Evaluation of changes in effective elastic properties, porosity and permeability of rock samples during extraction was carried out by means of finite element modeling. Assessment of the critical dimensions and orientation of internal defects, leading to the destruction of the rock samples during extraction from great depths, has been made based on the methods of linear destruction mechanics. Approach that makes it possible to calculate the change in the mechanical properties, porosity and fracturing of reservoir rocks in the process of extracting the rock sample from depths to the surface is proposed. Use of refined data on the mechanical properties of recoverable rock samples makes it possible to increase the accuracy of digital geological models required for geological exploration, determination of reservoir properties and oil and gas saturation of a field, and development of oil and gas deposits. Application of such models is especially relevant at all stages of the fields development with hard-to-recover reserves.

 Ключевые слова керн моделирование метод конечных элементов упругие свойства пористость поврежденность тре-щина разрушение напряженно-деформированное состояние Keywords rock sample modeling finite elements method elastic properties porosity damage crack destruction stress-strain state Alekseev A. Palyanovskiy breakthrough. New results in the development of the Bazhenov formation resources. Sibirskaya neft. 2016. Vol. 136. N 9, p. 38-42 (in Russian). Astafev V.I., Radaev Yu.N., Stepanova L.V. Non-linear mechanics of destruction. Samara: Izd-vo “Samarskii universitet”, 2004, p. 562 (in Russian). Damaskinskaya E.E., Kuksenko V.S. Computer modeling of fracture of rocks. Vestnik Dalnevostochnogo gosudar-stvennogo tehnicheskogo universiteta. 2011. Vol. 3-4, p. 8-9 (in Russian). Durkin S.M., Trukhonin K.A. Numerical model of HVO filtration Improvement of informational support. Delovoi zhurnal Neftegaz.RU. 2019. N 11(95), p. 66-73 (in Russian). Konovalenko I.S., Smolin A.Yu., Psakhie S.G. Multilevel simulation of deformation and fracture of brittle porous materials using the method of movable cellular automata. Physical mesomechanics. 2009. Vol. 12. N 5, p. 29-36 (in Russian). Krivtsov A.M. Deformation and destruction of microstructured solids. Мoscow: Fizmatlit, 2007, p. 304 (in Russian). Kulyapin P.S., Sokolova T.F. Statistical well log analysis of the Bazhenov formation. Seismic Technologies. 2013. Vol. 3, p. 28-42 (in Russian). Lavrov A.V., Shkuratnik V.L., Filimonov Yu.L. Acoustic emission memory effect in rocks. Мoscow: Moskovskii gosudarstvennyi gumanitarnyi universitet, 2004, p. 437 (in Russian). Nesterov I.I., Stasyuk M.E., Storozhev A.D. Methodology for substantiating the initial formation pressure in the Bazhenov-type oil deposits (on the example of the Bolshoi Salym field). Geologiya nefti i gaza. 1985. N 8, p. 1-6 (in Russian). Nosov V.V. Control of inhomogeneous materials strength by method of acoustic emission. Journal of Mining Institute. 2017. Vol. 226, p. 469-479. DOI: 10.25515/PMI.2017.4.469 Kashnikov Y.A., Ashikhmin S.G., Kukhtinskii A.E., Shustov D.V. The relationship of fracture toughness coefficients and geophysical characteristics of rocks of hydrocarbon deposits. Journal of Mining Institute. 2020. Vol. 241, p. 83-90. DOI: 10.31897/PMI.2020.1.83 Galkin S.V., Krivoshchekov S.N., Kozyrev N.D. et al. Accounting of geomechanical layer properties in multi-layer oil field development. Journal of Mining Institute. 2020. Vol. 244, p. 408-417. DOI: 10.31897/PMI.2020.4.3 Amosu A., Mahmood H., Ofoche P. Estimating the Permeability of Carbonate Rocks from the Fractal Properties of Moldic Pores using the Kozeny-Carman Equation. Research Ideas and Outcomes. 2018. Vol. 4. N e24430. DOI: 10.3897/rio.4.e24430 Mirzaei-Paiaman А., Ostadhassan М., Rezaee R. et al. A new approach in petrophysical rock typing. Journal of Petroleum Science and Engineering. 2018. Vol. 166, p. 445-464. DOI: 10.1016/j.petrol.2018.03.075 Christensen R. Mechanics of composite materials. New York: Courier Corporation, 2012, p. 384. Bespalko A.A., Yavorovich L.V., Eremenko A.A., Shtirts V.A. Electromagnetic Emission of Rocks after Large-Scale Blasts. Journal of Mining Science. 2018 Vol. 54, p. 187-193. DOI: 10.1134/S1062739118023533 Gorshkov A.M., Kudryashova L.K., Van Khe L. Petrophysical rock properties of the Bazhenov Formation of the South-Eastern part of Kaymysovsky Vault (Tomsk Region). Problems of Geology and Subsurface Development: XX International Scientific Symposium of Students, Postgraduates and Young Scientists, 4-8 April 2016, Tomsk, Russia. IOP Conference Series: Earth and Environmental Science, 2016. Vol. 43. N 012010. DOI: 10.1088/1755-1315/43/1/012010 Popov Е., Kalmykov A., Cheremisin A. et al. Laboratory investigations of hydrous pyrolysis as ternary enhanced oil recovery method for Bazhenov formation. Journal of Petroleum Science and Engineering. 2017. Vol. 156, p. 852-857. DOI: 10.1016/j.petrol.2017.06.017 Lavrov A. Fracture-induced Physical Phenomena and Memory Effects in Rocks: A Review. Strain. 2005. Vol. 41, p. 135-149. DOI: 10.1111/j.1475-1305.2005.00233.x Levandovskiy A.N., Melnikov B.E., Shamkin A.A. Modeling of porous material fracture. Magazine of Civil Engineering. 2017. Vol. 69, p. 3-22. DOI: 10.18720/MCE.69.1 Le-Zakharov S.A., Melnikov B.E., Semenov A.S. Nonlinear analysis of fluid saturated soil and rock under complex hydromechanical loading on the base of poroplastic models. Materials Physics and Mechanics. 2017. Vol. 31, p. 32-35. Nosikov A.I., Semenov A.S., Melnikov B.E., Rayimberdiyev T.P. Prediction of short fatigue crack propagation on the base of non-local fracture criterion. Proceedings of the XXVI International Conference Mathematical and Computer Simulation in Mechanics of Solids and Structures (MCM 2015), 28-30 September 2015, Saint Petersburg, Russia. Materials Physics and Mechanics, 2017. Vol. 31. Iss. 1-2, p. 44-47. Semenov A., Melnikov B. Interactive Rheological Modeling in Elasto-viscoplastic Finite Element Analysis. Procedia Engineering. 2016. Vol. 165, p. 1748-1756. DOI: 10.1016/j.proeng.2016.11.918 Shilko E., Dudkin I., Grigoriev A. The development of the formalism of movable cellular automata for modeling the nonlinear mechanical behavior of viscoelastic materials. XXVI Conference on Numerical Methods for Solving Problems in the Theory of Elasticity and Plasticity (EPPS-2019), 24-28 June 2019, Tomsk, Russia. EPJ Web of Conferences, 2019. Vol. 221. N 01052. DOI: 10.1051/epjconf/201922101052 Shkuratnik V.L., Lavrov A.V. Memory effects in rock. Journal of Mining Science. 1995. Vol. 31, p. 20-28. DOI: 10.1007/BF02046886 Balushkina N.S., Kalmykov G.A., Belokhin V.S. et al. Siliceous reservoirs of the Bazhenov formation, the Sredny Nazym Oil Field, and the structure of their pore space. Moscow University Geology Bulletin. 2014. Vol. 69, p. 91-100. DOI: 10.3103/s0145875214020033 Han J., Huang S., Zhao W. et al. Study on Electromagnetic Radiation in Crack Propagation Produced by Fracture of Rocks. Measurement. 2018. Vol. 131, p. 125-131. DOI:10.1016/j.measurement.2018.06.067 Tada H. The stress analysis of cracks handbook. New York: ASME Press, 2000, p. 677. Tang Q., Zhou Y., Zhao D. Numerical simulation of deformation memory effect of rock materials in lowstress condition using discrete element method. Energy Science & Engineering. 2020. Vol. 8. Iss. 9, p. 3027-3046. DOI: 10.1002/ese3.719 Benin A.V., Semenov A.S., Semenov S.G., Melnikov B.E. The simulation of bond fracture between reinforcing bars and concrete. Part 2. Models without taking the bond discontinuity into account. Magazine of Civil Engineering. 2014. Vol. 45, p. 23-40. DOI: 10.5862/MCE.45.4 Vinnikov V.A., Shkuratnik V.L. Theoretical model for the thermal emission memory effect in rocks. Journal of Applied Mechanics and Technical Physics. 2008. Vol. 49, p. 301-305. DOI: 10.1007/s10808-008-0041-3 Yulong C., Muhammad I. Experimental study of Kaiser effect under cyclic compression and tension tests. Geomechanics and Engineering. 2018. Vol. 14, p. 203-209. DOI: 10.12989/gae.2018.14.2.203