The urgency of reducing greenhouse gas emissions is undeniable and is on the agenda of any oil and gas production enterprise. The most applicable option for solving this issue is the implementation of carbon capture, utilisation and storage (CCUS) projects, which simultaneously solve the problem of CO2 utilization and increase of hydrocarbon recovery. The technology of injection of small volumes of carbon dioxide into producing wells has become widespread. CCUS projects can be implemented in the field only after carrying out research and development works aimed at assessing their profitability. A significant stage of scientific research is laboratory testing. The article presents current results of laboratory support of the project on injection of CO2 into a low-permeability reservoir. The main purpose of the research is to obtain experimental parameters for creating a correct composite model and further modeling of the process of CO2 injection into production wells. Laboratory studies included standard and special PVT studies, estimation of maximum and minimum mixing pressure, and filtration studies of core material. The studies also investigated the main negative factors that may occur during CO2 injection. Based on the experimental data obtained, a composite hydrodynamic model of the pilot site was created to perform further multivariate calculations of CO2 injection process on the scale of pilot sites.
References
1. Kozhin V.N. et al., Estimation of the utilization potential of carbon dioxide at Orenburg region oil fields (In Russ.), Neftepromyslovoe delo, 2021, no. 8, pp. 43–49,
DOI: https://doi.org/10.33285/0207-2351-2021-8(632)-43-49
2. Emel’yanov K., Zotov N., Savings on decarbonization (In Russ.), Energeticheskaya politika, 2021, no. 10, pp. 27–37, DOI: https://doi.org/10.46920/2409-5516_2021_10164_26
3. Klubkov S. et al., CCUS: monetizatsiya vybrosov CO2 (CCUS: monetization of CO2 emissions), Vygon consulting, 2021, URL: https://vygon-consulting.ru/upload/iblock/967/jzgys72b7ome167wi4dbao9fnsqsfj13/vygon_consulting_CCUS...
4. Grushevenko E., Kapitonov S., Mel’nikov Yu. Et al., Dekarbonizatsiya v neftegazovoy otrasli: mezhdunarodnyy opyt i prioritety Rossii (Decarbonization in the oil and gas industry: international experience and Russian priorities): edited by Mitrova T., Gayda I., Moscow: Publ. of the Low-carbon and circular economy Lab, 2021, 158 p., URL: https://energy.skolkovo.ru/downloads/documents/SEneC/Research/SKOLKOVO_EneC_Decarbonization_of_oil_a...
5. Surguchev M.L., Vtorichnye i tretichnye metody uvelicheniya nefteotdachi plastov (Secondary and tertiary methods of enhanced oil recovery), Moscow: Nedra Publ., 1985, 308 p.
6. Surguchev M.L., Gorbunov A.T., Zabrodin D.P. et al., Metody izvlecheniya ostatochnoy nefti (Residual oil recovery methods), Moscow: Nedra Publ., 1991, 347 p.
7. Balint V., Ban A., Doleshan Sh., Primenenie uglekislogo gaza v dobyche nefti (The use of carbon dioxide in oil production), Moscow: Nedra Publ., 1977, 240 p.
8. Lozin E.V., Ryazantsev M.V. et al., CO2-vozdeystvie: issledovaniya uchenykh UfNII-BashNIPIneft’ (CO2 impact: research by scientists from UfNII-BashNIPIneft), Ufa: Publ. of OOO «RN-BashNIPIneft’», 2021, 323 p.
9. Afonin D.G., Galikeev R.M. et al., Factor analysis of estimated efficiency of producing wells treatments with carbon dioxide using Huff and Puff technology (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2024, no. 8, pp. 84-88, DOI: https://doi.org/10.24887/0028-2448-2024-8-84-88
10. Morozyuk O.A., Afonin D.G., Kobyashev A.V., Dolgov I.A., Laboratory studies as a key component of gas EOR projects (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2023, no. 10, pp. 76–81, DOI: https://doi.org/10.24887/0028-2448-2023-10-76-81
11. Stepanova G.S., Gazovye i vodogazovye metody vozdeystviya na neftyanye plasty (Gas and water-gas methods of influence in oil reservoirs), Moscow: Gazoil press, 2006, 200 p.
12. Shamaev G.A., Preduprezhdenie oslozhneniy pri zakachke dioksida ugleroda dlya uvelicheniya nefteotdachi plastov pri razrabotke anomal’nykh neftey (Prevention of complications when injecting carbon dioxide to increase oil recovery during the development of anomalous oils): thesis of candidate of technical science, Ufa, 1988.
