Thermal response of the fractured hot dry rocks with thermal-hydro-mechanical coupling effects
文献类型：期刊论文
| 作者 | Wang, Hongwei2; Liu, Hejuan1,3; Chen, Dongfang2; Wu, Haidong2; Jin, Xianpeng2 |
| 刊名 | GEOTHERMICS
 |
| 出版日期 | 2022-09-01 |
| 卷号 | 104期号:-页码:- |
| 关键词 | Thermal-hydraulic-mechanical (THM) coupling Seepage resistance Temperature Fracture density Interconnected fractures |
| ISSN号 | 0375-6505 |
| 英文摘要 | In order to efficiently exploit geothermal energy, the reasonable configuration of fracture network should ensure the minimum water loss, high flow rate, high production temperature, and good connectivity between injection wells and production wells. To achieve the above objectives, the operating parameters of the EGS project should be balanced with the reservoir characteristics. In this paper, the THM coupling model is established in the finite element solver, which analyzes the influence of formation stress, injection pressure, roughness of fracture surface, fracture intersection angle, and fracture connectivity on fluid seepage pressure and outlet temperature. The accuracy of the model was verified by comparison to analytical solutions. The results show that although the increased vertical stress, fracture surface roughness and intersection angle will increase the flow resistance, the temperature of fracture fluid will rise faster. On the contrary, the increase of injection pressure will expand the fracture aperture and lead to the temperature of the fracture fluid rises slowly. In addition, not all fractures contribute to the productivity of the hot dry rocks (HDRs) type of reservoirs, while only the interconnected fractures are effective. The flow rate of production will increase when fracture density increases under the condition of connecting the injection well and production well, but the production temperature will decrease. The relative importance of the individual parameter alone is not enough to directly measure the optimal engineering parameters, so considering the impact of multiple parameters comprehensively is crucial for EGS project development and directly affects its commercial viability. |
| 学科主题 | Energy & Fuels ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000805870600001 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35215]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China 2.Center for Hydrogeology and Environmental Geology Survey, China Geological Survey, Tianjin 300309, China 3.University of Chinese Academy of Sciences, Beijing 100049, China |
| 推荐引用方式 GB/T 7714 | Wang, Hongwei,Liu, Hejuan,Chen, Dongfang,et al. Thermal response of the fractured hot dry rocks with thermal-hydro-mechanical coupling effects[J]. GEOTHERMICS,2022,104(-):-. |
| APA | Wang, Hongwei,Liu, Hejuan,Chen, Dongfang,Wu, Haidong,&Jin, Xianpeng.(2022).Thermal response of the fractured hot dry rocks with thermal-hydro-mechanical coupling effects.GEOTHERMICS,104(-),-. |
| MLA | Wang, Hongwei,et al."Thermal response of the fractured hot dry rocks with thermal-hydro-mechanical coupling effects".GEOTHERMICS 104.-(2022):-. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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