Geological evaluation for the carbon dioxide geological utilization and storage (CGUS) site: A review

SCIENCE CHINA-EARTH SCIENCES(2023)

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摘要
Carbon dioxide (CO 2 ) geological utilization and storage (CGUS) is the key link of CO 2 capture, utilization, and storage (CCUS). The accurate characterization of the geological body structure is a vital prerequisite of CGUS. This paper gives a review of the multi-scale three-dimensional geological structure characterization and site selection of CO 2 storage. It shows that there is a lack of systematic and high-precision methods for transparency characterization of multi-scale three-dimensional engineering geological structure and hydrogeological structure of a CO 2 storage site. There is no clear understanding of the fracture evolution and gas-liquid migration process of multi-scale geological body structure under the disturbance of CO 2 injection. There is a lack of sufficient quantitative methods for the dynamic evaluation of CO 2 geological storage potential. The geological suitability evaluation method for site selection of CO 2 storage is rough and has poor applicability, which is difficult to satisfy the urgent needs of CGUS site selection in the whole process of CO 2 sequestration industrialization in the future. Thus, it is required to conduct studies on the transparency characterization of geological body structure and intelligent site selection for CO 2 storage, which is of great importance for CGUS engineering practice.
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关键词
Engineering geology structure,Hydrogeology structure,Disturbance of CO2 injection,Potential evaluation,Storage site selection
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