Key indicators of caprock sealing assessment with consideration of faults in potential CO2 geological storage sites in Subei Basin, China
文献类型：期刊论文
| 作者 | Chen, Bowen1,2; Li, Qi1,2 ; Tan, Yongsheng1,2; Zhang, Yao1,2; Yu, Tao1,2; Zhong, Yiyan1; Ma, Jiyuan1,2; Li, Xiaochun1,2
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| 刊名 | GAS SCIENCE AND ENGINEERING
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| 出版日期 | 2024-09-01 |
| 卷号 | 129页码:24 |
| 关键词 | CO 2 geological storage Caprock sealing Fault Hydraulic-mechanical coupling Coulomb failure stress (CFS) |
| ISSN号 | 2949-9097 |
| DOI | 10.1016/j.jgsce.2024.205414 |
| 英文摘要 | Good caprock sealing is crucial for ensuring the long-term safety and security of carbon dioxide (CO2) geological storage. However, concealed faults within caprocks and reservoirs can impact the transport and accumulation of CO2 plumes. Due to the uncertainties associated with the geometric structure, physical properties, and combined relationships among reservoir, caprock and fault, accurately evaluating caprock sealing is challenging. To address the challenge of identifying key indicators for caprock sealing considering faults, this study focuses on the one potential CO2 geological storage field in the Subei Basin, China. First, this study establishes a hydraulicmechanical (HM) coupled finite element model considering a combination of caprock, reservoir and fault. Then, 22 research indicators, including fault offset, fault dip, caprock thickness, burial depth, permeability and mechanical properties, are analysed to evaluate their influence on caprock sealing via the tornado analysis and response surface methods. Finally, key indicators are determined based on evaluation criteria, such as pore pressure increment (Delta PP) and Coulomb failure stress (CFS), in the fault plane. The research results indicate that fault dip, fault offset, fault permeability, burial depth, and reservoir permeability are key indicators. The caprock thickness, caprock permeability, and caprock Young's modulus significantly influence the caprock sealing capacity. The Delta PP and CFS increase with increasing fault dip and offset. When the fault dip exceeds 45 degrees, the Delta PP and CFS reach maximum values at the interface between the reservoir and caprock. Fault permeability has a greater impact than reservoir permeability and caprock permeability. The research results may provide guidance for the evaluation of caprock sealing capacity for CO2 geological storage. |
| 资助项目 | National Key R & D Program of China[2022YFE011580] ; Creative Groups of Natural Science Foundation of Hubei Province[2021CFA030] ; Shanxi Provincial Key Research and Development Project[202102090301009] |
| WOS研究方向 | Energy & Fuels ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001291034200001 |
| 出版者 | ELSEVIER |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/42269]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Li, Qi |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Bowen,Li, Qi,Tan, Yongsheng,et al. Key indicators of caprock sealing assessment with consideration of faults in potential CO2 geological storage sites in Subei Basin, China[J]. GAS SCIENCE AND ENGINEERING,2024,129:24. |
| APA | Chen, Bowen.,Li, Qi.,Tan, Yongsheng.,Zhang, Yao.,Yu, Tao.,...&Li, Xiaochun.(2024).Key indicators of caprock sealing assessment with consideration of faults in potential CO2 geological storage sites in Subei Basin, China.GAS SCIENCE AND ENGINEERING,129,24. |
| MLA | Chen, Bowen,et al."Key indicators of caprock sealing assessment with consideration of faults in potential CO2 geological storage sites in Subei Basin, China".GAS SCIENCE AND ENGINEERING 129(2024):24. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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