Modelling the multifield coupling response to the CO2/Water flooding in ultralow-permeability oil reservoir
Abstract The multifield coupling response and mechanism is directly related to the enhancement of oil recovery and CO2 storage in ultralow-permeability oil reservoir, considering the CO2/water flooding. In this study, multifield morphology and multiphase evolution was investigated through the develo...
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Springer
2025-06-01
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| Series: | Geomechanics and Geophysics for Geo-Energy and Geo-Resources |
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| Online Access: | https://doi.org/10.1007/s40948-025-00962-2 |
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| author | Tong Zhang Quan Gan Mingchao Wang Shuaibing Song Ming Tang Yanfang Li |
| author_facet | Tong Zhang Quan Gan Mingchao Wang Shuaibing Song Ming Tang Yanfang Li |
| author_sort | Tong Zhang |
| collection | DOAJ |
| description | Abstract The multifield coupling response and mechanism is directly related to the enhancement of oil recovery and CO2 storage in ultralow-permeability oil reservoir, considering the CO2/water flooding. In this study, multifield morphology and multiphase evolution was investigated through the developed FLAC3D-TOUGHREACT simulator, considering the large-scale CO2 flooding, water flooding and CO2-Alatering-water flooding (CAWF) scenarios, and mechanical response and petrophysical properties was analyzed. The results show that formation pressure is sensitive to CO2 flooding with early initiation and dynamic increase response with maximum value of 11.5 MPa in CO2 flooding and 9.5 MPa in CAWF, while that immunity for the water flooding with later initiation and slight increase response. The CO2 expansion and CO2-water-formation interaction dominate the decrease of in-situ stress and lead to the pronounced enhancement of permeability about 3 times, and the dissolved water in formation resulted in the slow increase of formation pressure. And a slight temperature reduction of 0.5–2 °C was observed. In addition, formation porosity is more sensitive to the injected CO2 than water, while the injected water promoted the violent reaction of CO2-water-formation with the enhancement of mineral dissolution and larger increase rate of porosity. The slight response of permeability followed by the dynamic increase induced by the enlarge pore size followed by the pore connectivity under the combined chemical and physical effects of water/CO2, and the percentage of dissolution for the calcite reduced by 0.08%. The findings provided significant reference to the simulation and engineering practice. |
| format | Article |
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| institution | OA Journals |
| issn | 2363-8419 2363-8427 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | Springer |
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| series | Geomechanics and Geophysics for Geo-Energy and Geo-Resources |
| spelling | doaj-art-fb3e8aab83d04e79aef6dfa874d91ba22025-08-20T02:31:00ZengSpringerGeomechanics and Geophysics for Geo-Energy and Geo-Resources2363-84192363-84272025-06-0111112410.1007/s40948-025-00962-2Modelling the multifield coupling response to the CO2/Water flooding in ultralow-permeability oil reservoirTong Zhang0Quan Gan1Mingchao Wang2Shuaibing Song3Ming Tang4Yanfang Li5National Key Laboratory of Deep Coal Safe Mining and Environmental Protection, Anhui University of Science & TechnologyChongqing UniversitySchool of Safety Science and Engineering, Anhui University of Science & TechnologyNational Key Laboratory of Intelligent and Unmanned Mining Technology for Coal, Anhui University of Science & TechnologySchool of Safety Science and Engineering, Anhui University of Science & TechnologySchool of Safety Science and Engineering, Anhui University of Science & TechnologyAbstract The multifield coupling response and mechanism is directly related to the enhancement of oil recovery and CO2 storage in ultralow-permeability oil reservoir, considering the CO2/water flooding. In this study, multifield morphology and multiphase evolution was investigated through the developed FLAC3D-TOUGHREACT simulator, considering the large-scale CO2 flooding, water flooding and CO2-Alatering-water flooding (CAWF) scenarios, and mechanical response and petrophysical properties was analyzed. The results show that formation pressure is sensitive to CO2 flooding with early initiation and dynamic increase response with maximum value of 11.5 MPa in CO2 flooding and 9.5 MPa in CAWF, while that immunity for the water flooding with later initiation and slight increase response. The CO2 expansion and CO2-water-formation interaction dominate the decrease of in-situ stress and lead to the pronounced enhancement of permeability about 3 times, and the dissolved water in formation resulted in the slow increase of formation pressure. And a slight temperature reduction of 0.5–2 °C was observed. In addition, formation porosity is more sensitive to the injected CO2 than water, while the injected water promoted the violent reaction of CO2-water-formation with the enhancement of mineral dissolution and larger increase rate of porosity. The slight response of permeability followed by the dynamic increase induced by the enlarge pore size followed by the pore connectivity under the combined chemical and physical effects of water/CO2, and the percentage of dissolution for the calcite reduced by 0.08%. The findings provided significant reference to the simulation and engineering practice.https://doi.org/10.1007/s40948-025-00962-2Multifield responseFLAC3D-TOUGHREACT simulatorUltralow-permeability reservoirCO2/water flooding |
| spellingShingle | Tong Zhang Quan Gan Mingchao Wang Shuaibing Song Ming Tang Yanfang Li Modelling the multifield coupling response to the CO2/Water flooding in ultralow-permeability oil reservoir Geomechanics and Geophysics for Geo-Energy and Geo-Resources Multifield response FLAC3D-TOUGHREACT simulator Ultralow-permeability reservoir CO2/water flooding |
| title | Modelling the multifield coupling response to the CO2/Water flooding in ultralow-permeability oil reservoir |
| title_full | Modelling the multifield coupling response to the CO2/Water flooding in ultralow-permeability oil reservoir |
| title_fullStr | Modelling the multifield coupling response to the CO2/Water flooding in ultralow-permeability oil reservoir |
| title_full_unstemmed | Modelling the multifield coupling response to the CO2/Water flooding in ultralow-permeability oil reservoir |
| title_short | Modelling the multifield coupling response to the CO2/Water flooding in ultralow-permeability oil reservoir |
| title_sort | modelling the multifield coupling response to the co2 water flooding in ultralow permeability oil reservoir |
| topic | Multifield response FLAC3D-TOUGHREACT simulator Ultralow-permeability reservoir CO2/water flooding |
| url | https://doi.org/10.1007/s40948-025-00962-2 |
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