Caprock sealing integrity and key indicators of CO2 geological storage considering the effect of hydraulic-mechanical coupling: X field in the Bohai Bay 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; Ma, Jiyuan1,2; Zhong, Yiyan2; Li, Xiaying1,2
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| 刊名 | ENGINEERING GEOLOGY
 |
| 出版日期 | 2024-11-01 |
| 卷号 | 342页码:25 |
| 关键词 | Saline aquifers CO(2 )geological storage Caprock sealing Hydraulic-mechanical coupling Key performance indicators |
| ISSN号 | 0013-7952 |
| DOI | 10.1016/j.enggeo.2024.107741 |
| 英文摘要 | Caprock sealing efficiency is an essential guarantee for the long-term safety and stability of CO2 geological storage (CCS). However, the uncertainty in the physical and mechanical properties of deep formations poses challenges to accurately predict the risks of CO2 leakage resulting in CO2 breakthrough or caprock fracture. This study aims to address the issue of imperfect key indicators for caprock sealing by focusing on the CCS project in the Bohai Bay Basin, China. A hydraulic-mechanical (HM) coupling program without considering multiphase flow and the chemical reactions is secondary developed based on the finite element software ABAQUS. Furthermore, a three-dimensional finite element numerical model is established for the analysis of HM coupling, with pore pressure increment (OPP), Coulomb failure stress (OCFS) and displacement (U) as evaluation criteria. The Tornado analysis and response surface analysis are employed to analyze the impact of 17 indicators on the caprock sealing, including caprock thickness, burial depth, reservoir and caprock permeability parameters, and mechanical parameters. Subsequently, key performance indicators for caprock sealing are determined. The research results indicate that the reservoir permeability, injection rate, caprock permeability, caprock Young's modulus, caprock internal friction angle, caprock Poisson's ratio, and caprock burial depth are key indicators of caprock sealing capability. The reservoir permeability has a greater impact sensitivity compared to the caprock permeability. Pore pressure and displacement increase with increasing in reservoir permeability. The caprock's resistance to deformation and fracturing increases with increasing in Young's modulus and Poisson's ratio of caprock. This study provides valuable insights for evaluating caprock sealing during CO2 storage in saline aquifers. |
| 资助项目 | National Key Research and Development Program of China[2022YFE0115800] ; Creative Groups of Natural Science Foundation of Hubei Province[2021CFA030] ; National Natural Science Foundation of China[41872210] |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001333026700001 |
| 出版者 | ELSEVIER |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/42825]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Li, Qi |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Bowen,Li, Qi,Tan, Yongsheng,et al. Caprock sealing integrity and key indicators of CO2 geological storage considering the effect of hydraulic-mechanical coupling: X field in the Bohai Bay Basin, China[J]. ENGINEERING GEOLOGY,2024,342:25. |
| APA | Chen, Bowen.,Li, Qi.,Tan, Yongsheng.,Zhang, Yao.,Yu, Tao.,...&Li, Xiaying.(2024).Caprock sealing integrity and key indicators of CO2 geological storage considering the effect of hydraulic-mechanical coupling: X field in the Bohai Bay Basin, China.ENGINEERING GEOLOGY,342,25. |
| MLA | Chen, Bowen,et al."Caprock sealing integrity and key indicators of CO2 geological storage considering the effect of hydraulic-mechanical coupling: X field in the Bohai Bay Basin, China".ENGINEERING GEOLOGY 342(2024):25. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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