Numerical investigations on the damage evolution in hot dry rocks with natural fractures induced by hydraulic stimulation
文献类型：期刊论文
| 作者 | Wang, Hongwei2,3,4; Jin, Xianpeng4; Liu, Hejuan1,5; Wu, Haidong4; Liu, Donglin4; Song, Yujia1,5; Ban, Shengnan1,5; Tong, Rongchen1,5; Qiu, Xiaosong6; Chen, Dongfang4 |
| 刊名 | GEOTHERMICS
 |
| 出版日期 | 2024-11-01 |
| 卷号 | 123页码:9 |
| 关键词 | Thermal-hydro-mechanical-damage model Hydraulic stimulation Fractured rocks Aperture Stress state |
| ISSN号 | 0375-6505 |
| DOI | 10.1016/j.geothermics.2024.103114 |
| 英文摘要 | Enhanced geothermal systems (EGSs), particularly hydraulic stimulation techniques, show promise in extracting high-enthalpy geothermal energy from hot dry rocks. However, creating an efficient volumetric fracture network in hot dry rocks remains challenging due to issues such as inadequate connectivity, significant water injection loss, and early thermal breakthrough. In this study, a damage variable is introduced into the improved thermal- hydro-mechanical coupled model to describe fracture propagation using damage evolution. Numerical simulations consider the effects offracture aperture, injection temperature, stress state, well position, etc. The results indicate that the damage zone tends to propagate parallel to the maximum primary stress in hot dry rocks. Additionally, the extent of rock damage due to thermal stress is directly proportional to the temperature difference between the fluid and the rock. The placement of double wells and the orientation of the maximum principal stress greatly affects the spatial distribution of the damaged zone under specific natural fracture network conditions. |
| 资助项目 | National Key Research and Development Program[2021YFB150740401] ; CAS Pioneer Hundred Talents Program in China[Y826031C01] ; Geological Survey Project of China[DD20230018] ; National Natural Science Foundation of China[42202336] |
| WOS研究方向 | Energy & Fuels ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001275077400001 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/42044]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Liu, Hejuan |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.China Univ Geosci, Fac Engn, Wuhan 430074, Peoples R China 3.China Geol Survey, Chengdu Ctr, Chengdu 610081, Peoples R China 4.China Geol Survey, Ctr Hydrogeol & Environm Geol Survey, Tianjin 300309, Peoples R China 5.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 6.China Natl Petr Corp, Key Lab Underground Storage Oil & Gas Engineer, Langfang 065007, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Hongwei,Jin, Xianpeng,Liu, Hejuan,et al. Numerical investigations on the damage evolution in hot dry rocks with natural fractures induced by hydraulic stimulation[J]. GEOTHERMICS,2024,123:9. |
| APA | Wang, Hongwei.,Jin, Xianpeng.,Liu, Hejuan.,Wu, Haidong.,Liu, Donglin.,...&Chen, Dongfang.(2024).Numerical investigations on the damage evolution in hot dry rocks with natural fractures induced by hydraulic stimulation.GEOTHERMICS,123,9. |
| MLA | Wang, Hongwei,et al."Numerical investigations on the damage evolution in hot dry rocks with natural fractures induced by hydraulic stimulation".GEOTHERMICS 123(2024):9. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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