Phase change-induced internal-external strain of faults during supercritical CO2 leakage
文献类型：期刊论文
| 作者 | Xu, Lifeng; Li, Qi3 ; Tan, Yongsheng; Li, Xiaochun; Chen, Bowen
|
| 刊名 | GONDWANA RESEARCH
 |
| 出版日期 | 2023-10-01 |
| 卷号 | 122页码:215-231 |
| 关键词 | Phase change Fault internal-external strains Carbon dioxide leakage Fiber Bragg grating sensor Carbon capture and storage |
| ISSN号 | 1342-937X |
| DOI | 10.1016/j.gr.2022.07.001 |
| 英文摘要 | For the long-term safe operation of carbon capture and storage (CCS) projects, the leakage of supercritical carbon dioxide (SC-CO2) along a fault is an important factor that needs to be monitored. To investigate the phase change and fault deformation associated with SC-CO2 leakage along a fault, this study carried out five groups of SC-CO2 leakage experiments at different initial CO2 temperatures. The volume of the CO2 storage container (100 mL), CO2 initial pressure (8.07 MPa) and fault confining pressure (10.5 MPa) were controlled at the same values. The CO2 phase change and fault internal-external strains response were monitored by high-precision fiber Bragg grating sensors throughout the experiment. The results show that (1) Temperature and strains response times were 1 and 2.5 times longer than pressure, respectively. (2) The viscosity greatly influenced the determination of the critical temperature T0 = 45 degrees C. (3) The fault internal strains were more than twice that of the external one; except for the entrance, the fault internal and external strains states were opposite at the beginning of leakage; all other positions on the fault surface showed compressive strains except for the tensile strains at the entrance. (4) The distribution of the inflection point of temperature-pressure curves may be used as a basis for distinguishing CO2 leakage from faults (near the triple point) or pipes (far from the triple point). This study provides technical and theoretical support for laboratory-scale studies on the mechanism of internal and external strains differences caused by phase transition of SC-CO2 leakage along faults. (c) 2022 International Association for Gondwana Research. Published by Elsevier B.V. All rights reserved. |
| 资助项目 | Major Project of Inner Mongolia Science and Technology[2021ZD0034] ; National Natural Science Foundation of China[41872210] ; China Scholarship Council[202104910431] ; [ZL 202110708668.1] |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001075067800001 |
| 出版者 | ELSEVIER |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/39506]  |
| 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 3.Xiaohongshan 2, Wuhan 430071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Lifeng,Li, Qi,Tan, Yongsheng,et al. Phase change-induced internal-external strain of faults during supercritical CO2 leakage[J]. GONDWANA RESEARCH,2023,122:215-231. |
| APA | Xu, Lifeng,Li, Qi,Tan, Yongsheng,Li, Xiaochun,&Chen, Bowen.(2023).Phase change-induced internal-external strain of faults during supercritical CO2 leakage.GONDWANA RESEARCH,122,215-231. |
| MLA | Xu, Lifeng,et al."Phase change-induced internal-external strain of faults during supercritical CO2 leakage".GONDWANA RESEARCH 122(2023):215-231. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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