Laboratory Studies of the Process of Injecting CO2 Mixed with Methane into Productive Terrigenous Oil-Saturated Rocks

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Abstract

The technological and economic efficiency of carbon dioxide (CO2) injection depends on many factors, such as the CO2 source, the method of gas delivery to the field, the method of injection into the reservoir, the characteristics of the reservoir and oil, etc. Therefore, before implementing the method at oil production facilities, it is necessary to conduct special laboratory tests for the conditions of oil and gas facilities, determine the technological feasibility of CO2 injection and economic feasibility. The paper presents the results of experimental studies carried out in the laboratory of modeling filtration processes and enhanced oil recovery of the Department of Oil and Gas Technologies. Using core material on the example of one of the fields in the Perm Krai, filtration tests were performed to displace oil with gas (a mixture of CO2 and methane) and joint stationary filtration of oil and gas through the porous medium of the reservoir rock. As part of the study, core and fluids were prepared, filtration tests were carried out using modern scientific equipment. Modeling of CO2 injection into oil-saturated rocks was performed on three differently permeable composite core samples. As a result, it was found that when using gas, high values of the oil displacement coefficient are achieved, due to the almost complete mutual solubility of gas and oil. Potentially, this can significantly increase the share of recoverable reserves at new objects that are just entering industrial development when CO2 injection is organized. The ratio of gas and oil in the flow at which complete miscibility occurs was determined. Cases of imbalance of the "oil - gas" system were recorded, in which heavy components of oil form resinous sediments that clog the pore space. The content of oil and gas in the flow at which colmatants were formed was determined.

Keywords

CO2 utilizationcorefiltration testsmiscible displacementoil displacement coefficientphase permeabilitycolmatant

Bibliography

  1. 1.Mitrofanova, I.V. Decarbonization of the economy – the general trend of development of Russia and its regions in the 21st century / I.V. Mitrofanova // Regional economy. South Of Russia. – 2021. – Vol. 9, no. 4. – P. 4–13. DOI: 10.15688/re.volsu.2021.4.1. – EDN MFGOEW. Scholar
  2. 2.Павлова, П.Л. Анализ зарубежной техники и технологии закачки диоксида углерода в нефтегазоностный пласт. Обзорная статья / П.Л. Павлова, Е.И. Михиенкова // Нефтегазовое дело. – 2021, – Т. 5. – C. 63–65. Scholar
  3. 3.Blam, I. Yu. Different Modes of Provisioning Decarbonization of the Oil and Gas Industry in Modern Societies / I. Yu. Blam, S. Yu. Kovalev // Journal of Siberian Federal University. Humanities and Social Sciences. – 2024. – Vol. 17, no. 3. – P. 457–464. EDN CWDBNW. Scholar
  4. 4.Попадько, Н.В. Роль наилучших доступных технологий в декарбонизации российской экономики (на примере нефтегазодобывающего комплекса) / Н.В. Попадько, Ю.В. Ухина // Экономика строительства. – 2024. – № 12. – С. 227–230. – EDN OMBONY. Scholar
  5. 5.Yoosook, H. CO2 Utilization for Enhance Oil Recovery with Huff-N-Puff Process in Depleting Heterogeneous Reservoir / H. Yoosook, K. Maneeintr, T. Boonpramote // Energy Procedia. – 2017. – Vol. 141. – Р. 184–188. DOI: 10.1016/j.egypro.2017.11.035 Scholar
  6. 6.Влияние секвестрации углерода в горных породах на изменение фильтрационных и механических характеристик пласта при доизвлечении запасов нефти / А.А. Щербаков, М.С. Турбаков, Хунвэн Цзин, Лиюань Юй, С.Г. Ашихмин, Ю.С. Щербакова // Недропользование. – 2025. – Т.25, № 1. – С. 52–58. DOI: 10.15593/2712-8008/2025.1.7 Scholar
  7. 7.A Literature Review of CO2, Natural Gas, and Water-Based Fluids for Enhanced Oil Recovery in Unconventional Reservoirs / L.C. Burrows, F. Haeri, P. Cvetic, S. Sanguinito, F. Shi, D. Tapriyal, A. Goodman, R.M. Enick // Energy and Fuels. – 2020. – Vol. 34 (5). – Р. 5331–5380. DOI: 10.1021/ACS.ENERGYFUELS.9B03658 Scholar
  8. 8.Braithwaite, C. A Review of IOR/EOR Opportunities for the Brent Field: Depressurization, the Way Forward / C. Braithwaite // Materials of SPE/DOE Improved Oil Recovery Symposium. – Tulsa, Oklahoma, USA. – 1994. – SPE-27766-MS. DOI: 10.2118/27766-MS Scholar
  9. 9.Design and Implementation of the First CO2-EOR Pilot in Abu Dhabi, UAE. Materials of SPE EOR Conference at Oil and Gas West Asia / S. Al Hajeri, S. Negahban, G. Al-Yafei, A. Al Basry // Muscat, Oman. – 2010. – SPE-129609-MS. DOI: 10.2118/129609-ms 10. Chen, B. CO2 water-alternating-gas injection for enhanced oil recovery: Optimal well controls and half-cycle lengths / B. Chen, A.C. Reynolds // Computers and Chemical Engineering. – 2018. – Vol. 113. – Р. 44–56. DOI: 10.1016/j.compchemeng.2018.03.006 Scholar
  10. 10.Jia, B. A Review of the Current Progress of CO2 Injection EOR and Carbon Storage in Shale Oil Reservoirs / B. Jia, J. Tsau, R. Barati // Fuel. – 2019. – Vol. 236. – P. 404–427. DOI: 10.1016/j.fuel.2018.08.103. Scholar

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Article information

Published
24 October 2025
Issue date
24 October 2025
Issue
Vol. 25, No. 3 (2025)
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