THMD analysis of fluid injection-induced fault reactivation and slip in EGS
文献类型：期刊论文
| 作者 | Lv, Yanxin1,3,4; Yuan, Chao3,4; Zhu, Xiaohua3,4; Gan, Quan1,5; Li, Haibo2
|
| 刊名 | GEOTHERMICS
 |
| 出版日期 | 2022-02-01 |
| 卷号 | 99期号:-页码:- |
| 关键词 | THMD coupling Fault reactivation EGS Heat transfer Pore pressure Normal stress release THMD coupling Fault reactivation EGS Heat transfer Pore pressure Normal stress release |
| ISSN号 | 0375-6505 |
| 英文摘要 | A pseudo-3D coupled model with fault using coupled thermo-hydro-mechanical-damage (THMD) modeling processes is established by the framework of TOUGHREACT-FLAC3D. Four scenarios are proposed to evaluate the effect of deviatoric stress, injection temperature, and fracture spacing on conducting damage, inducing the fault slip, and changing the permeability evolution. Results indicates the larger initial deviatoric stress, the larger the area of reservoir damage, the larger the area of fault damage, the earlier the occurrence of fault damage, and the faster the damage passes through the fault and connects with the withdrawal well. It is found that the normal stress release and strength weakening are the dominated reasons of destabilizing the fault and demonstrated the ultimate slip resistance strength of fault is close to 23 MPa. Research on injection temperature has found that the main reasons for the damage evolution of reservoirs are the varying sensitivity of fluid viscosity to temperature and the variation of deviatoric stress. Both damage evolution and deviatoric stress influence the variation of fault slip distance. Similarly, we also investigate the effect of fracture spacing on damage evolution, which shows that the decreasing fracture spacing induces the increase of reservoir permeability which obviously decreases the barrier effect of the fault and widens the damage front surface after passing through the fault. |
| 学科主题 | Energy & Fuels ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000781358400004 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35433]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.Department of Petroleum Geology & Geology, School of Geosciences, University of Aberdeen, UK 2.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China 3.Laboratory of Oil & Gas Equipment, Ministry of Education (Southwest Petroleum University) Chengdu, Sichuan 610500, China 4.School of Mechatronic Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500, China 5.State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing, China |
| 推荐引用方式 GB/T 7714 | Lv, Yanxin,Yuan, Chao,Zhu, Xiaohua,et al. THMD analysis of fluid injection-induced fault reactivation and slip in EGS[J]. GEOTHERMICS,2022,99(-):-. |
| APA | Lv, Yanxin,Yuan, Chao,Zhu, Xiaohua,Gan, Quan,&Li, Haibo.(2022).THMD analysis of fluid injection-induced fault reactivation and slip in EGS.GEOTHERMICS,99(-),-. |
| MLA | Lv, Yanxin,et al."THMD analysis of fluid injection-induced fault reactivation and slip in EGS".GEOTHERMICS 99.-(2022):-. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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