A technical review of chemical reactions during CCUS-EOR in different reservoirs

Geochemical reactions play a vital role in determining the efficiency of carbon capture, utilization, and storage combined with enhanced oil recovery (CCUS-EOR), particularly through their influence on reservoir properties. To deepen the understanding of these mechanisms, this review investigates th...

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Main Authors: Ali Satea, Ye Tian, Zuhao Kou, Bo Kang, Yulong Zhao, Liehui Zhang
Format: Article
Language:English
Published: KeAi Communications Co., Ltd. 2025-06-01
Series:Natural Gas Industry B
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Online Access:http://www.sciencedirect.com/science/article/pii/S2352854025000361
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author Ali Satea
Ye Tian
Zuhao Kou
Bo Kang
Yulong Zhao
Liehui Zhang
author_facet Ali Satea
Ye Tian
Zuhao Kou
Bo Kang
Yulong Zhao
Liehui Zhang
author_sort Ali Satea
collection DOAJ
description Geochemical reactions play a vital role in determining the efficiency of carbon capture, utilization, and storage combined with enhanced oil recovery (CCUS-EOR), particularly through their influence on reservoir properties. To deepen the understanding of these mechanisms, this review investigates the interactions among injected CO2, formation fluids, and rock minerals and evaluates their implications for CCUS-EOR performance. The main results are summarized as follows. First, temperature, pressure, pH, and fluid composition are identified as key factors influencing mineral dissolution and precipitation, which in turn affect porosity, permeability, and CO2 storage. Second, carbonate minerals, such as calcite and dolomite, show high reactivity under lower temperature conditions, enhancing dissolution and permeability, while silicate minerals, including illite, kaolinite, quartz, and K-feldspar, are comparatively inert. Third, the formation of carbonic acid during CO2 injection promotes dissolution, whereas secondary precipitation, especially of clay minerals, can reduce pore connectivity and limit flow paths. Fourth, mineral transformation and salt precipitation can further modify reservoir characteristics, influencing both oil recovery and long-term CO2 trapping. Fifth, advanced experimental tools, such as Computed Tomography (CT) and Nuclear Magnetic Resonance (NMR) imaging, combined with geochemical modeling and reservoir simulation, are essential to predict petrophysical changes across scales. This review provides a theoretical foundation for integrating geochemical processes into CCUS-EOR design, offering technical support for field application and guiding sustainable CO2 management in oil reservoirs.
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spelling doaj-art-e3a77f7feb4249b2b43f3160e64f243d2025-08-20T02:37:45ZengKeAi Communications Co., Ltd.Natural Gas Industry B2352-85402025-06-0112326427810.1016/j.ngib.2025.05.002A technical review of chemical reactions during CCUS-EOR in different reservoirsAli Satea0Ye Tian1Zuhao Kou2Bo Kang3Yulong Zhao4Liehui Zhang5State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China; EBS Petroleum Company Limited, Baghdad, 10023, IraqState Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China; Corresponding author.State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China; Department of Earth and Environmental Engineering, Columbia University, NY 10027, USAEBS Petroleum Company Limited, Baghdad, 10023, IraqState Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, ChinaState Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, ChinaGeochemical reactions play a vital role in determining the efficiency of carbon capture, utilization, and storage combined with enhanced oil recovery (CCUS-EOR), particularly through their influence on reservoir properties. To deepen the understanding of these mechanisms, this review investigates the interactions among injected CO2, formation fluids, and rock minerals and evaluates their implications for CCUS-EOR performance. The main results are summarized as follows. First, temperature, pressure, pH, and fluid composition are identified as key factors influencing mineral dissolution and precipitation, which in turn affect porosity, permeability, and CO2 storage. Second, carbonate minerals, such as calcite and dolomite, show high reactivity under lower temperature conditions, enhancing dissolution and permeability, while silicate minerals, including illite, kaolinite, quartz, and K-feldspar, are comparatively inert. Third, the formation of carbonic acid during CO2 injection promotes dissolution, whereas secondary precipitation, especially of clay minerals, can reduce pore connectivity and limit flow paths. Fourth, mineral transformation and salt precipitation can further modify reservoir characteristics, influencing both oil recovery and long-term CO2 trapping. Fifth, advanced experimental tools, such as Computed Tomography (CT) and Nuclear Magnetic Resonance (NMR) imaging, combined with geochemical modeling and reservoir simulation, are essential to predict petrophysical changes across scales. This review provides a theoretical foundation for integrating geochemical processes into CCUS-EOR design, offering technical support for field application and guiding sustainable CO2 management in oil reservoirs.http://www.sciencedirect.com/science/article/pii/S2352854025000361CCUSCO2 injectionGeochemistryEnhanced oil recoveryChemical reactionsGeochemical modeling
spellingShingle Ali Satea
Ye Tian
Zuhao Kou
Bo Kang
Yulong Zhao
Liehui Zhang
A technical review of chemical reactions during CCUS-EOR in different reservoirs
Natural Gas Industry B
CCUS
CO2 injection
Geochemistry
Enhanced oil recovery
Chemical reactions
Geochemical modeling
title A technical review of chemical reactions during CCUS-EOR in different reservoirs
title_full A technical review of chemical reactions during CCUS-EOR in different reservoirs
title_fullStr A technical review of chemical reactions during CCUS-EOR in different reservoirs
title_full_unstemmed A technical review of chemical reactions during CCUS-EOR in different reservoirs
title_short A technical review of chemical reactions during CCUS-EOR in different reservoirs
title_sort technical review of chemical reactions during ccus eor in different reservoirs
topic CCUS
CO2 injection
Geochemistry
Enhanced oil recovery
Chemical reactions
Geochemical modeling
url http://www.sciencedirect.com/science/article/pii/S2352854025000361
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