Effects of extraction well assisted by the fault on thermal recovery performance in hydrothermal system
In hydrothermal system, the fault acting as the fluid pathway to assist extraction wells for extracting hydrothermal resources is being concerned. In this study, a coupled thermal-hydraulic-mechanical model of a fault-controlled hydrothermal system was established. The spatiotemporal evolution of th...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-05-01
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| Series: | Case Studies in Thermal Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X25002229 |
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| author | Wentao Hou Jinghong Yan Dan Ma Heming Su Qiang Li |
| author_facet | Wentao Hou Jinghong Yan Dan Ma Heming Su Qiang Li |
| author_sort | Wentao Hou |
| collection | DOAJ |
| description | In hydrothermal system, the fault acting as the fluid pathway to assist extraction wells for extracting hydrothermal resources is being concerned. In this study, a coupled thermal-hydraulic-mechanical model of a fault-controlled hydrothermal system was established. The spatiotemporal evolution of the temperature-seepage field in thermal recovery system was revealed, and effects of fault physical characteristics, extraction parameters and well distance on thermal recovery performance were analyzed. The results show that, with the prolongation of extraction time (0–20 years), the thermal recovery performance of the fracture-controlled hydrothermal system is significantly better than conventional hydrothermal system. With the permeability of fault rocks transforms from isotropic to anisotropic, the production power of hydrothermal system increases. In the unbalanced extraction scheme, the production power decreases with the reduction of the extraction flow rate of the middle well. Three extraction schemes were studied, and the hydrothermal system has a better thermal recovery performance when the scheme with a smaller imbalance coefficient. In addition, it is found that with the shortening of the distance between the extraction well and the recharge well, the production power decreases significantly. |
| format | Article |
| id | doaj-art-ee7f5243588740308d18c86ab1309dc4 |
| institution | OA Journals |
| issn | 2214-157X |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj-art-ee7f5243588740308d18c86ab1309dc42025-08-20T02:17:28ZengElsevierCase Studies in Thermal Engineering2214-157X2025-05-016910596210.1016/j.csite.2025.105962Effects of extraction well assisted by the fault on thermal recovery performance in hydrothermal systemWentao Hou0Jinghong Yan1Dan Ma2Heming Su3Qiang Li4Key Laboratory of Deep Coal Resource Mining of Ministry of Education, School of Mines, China University of Mining and Technology, Xuzhou, 221116, Jiangsu, ChinaKey Laboratory of Deep Coal Resource Mining of Ministry of Education, School of Mines, China University of Mining and Technology, Xuzhou, 221116, Jiangsu, ChinaKey Laboratory of Deep Coal Resource Mining of Ministry of Education, School of Mines, China University of Mining and Technology, Xuzhou, 221116, Jiangsu, China; Corresponding author.China Shenhua Energy Co Ltd, Beijing, 102209, ChinaKey Laboratory of Deep Coal Resource Mining of Ministry of Education, School of Mines, China University of Mining and Technology, Xuzhou, 221116, Jiangsu, ChinaIn hydrothermal system, the fault acting as the fluid pathway to assist extraction wells for extracting hydrothermal resources is being concerned. In this study, a coupled thermal-hydraulic-mechanical model of a fault-controlled hydrothermal system was established. The spatiotemporal evolution of the temperature-seepage field in thermal recovery system was revealed, and effects of fault physical characteristics, extraction parameters and well distance on thermal recovery performance were analyzed. The results show that, with the prolongation of extraction time (0–20 years), the thermal recovery performance of the fracture-controlled hydrothermal system is significantly better than conventional hydrothermal system. With the permeability of fault rocks transforms from isotropic to anisotropic, the production power of hydrothermal system increases. In the unbalanced extraction scheme, the production power decreases with the reduction of the extraction flow rate of the middle well. Three extraction schemes were studied, and the hydrothermal system has a better thermal recovery performance when the scheme with a smaller imbalance coefficient. In addition, it is found that with the shortening of the distance between the extraction well and the recharge well, the production power decreases significantly.http://www.sciencedirect.com/science/article/pii/S2214157X25002229Hydrothermal systemFault propertiesExtraction parametersTHM couplingThermal recovery performance |
| spellingShingle | Wentao Hou Jinghong Yan Dan Ma Heming Su Qiang Li Effects of extraction well assisted by the fault on thermal recovery performance in hydrothermal system Case Studies in Thermal Engineering Hydrothermal system Fault properties Extraction parameters THM coupling Thermal recovery performance |
| title | Effects of extraction well assisted by the fault on thermal recovery performance in hydrothermal system |
| title_full | Effects of extraction well assisted by the fault on thermal recovery performance in hydrothermal system |
| title_fullStr | Effects of extraction well assisted by the fault on thermal recovery performance in hydrothermal system |
| title_full_unstemmed | Effects of extraction well assisted by the fault on thermal recovery performance in hydrothermal system |
| title_short | Effects of extraction well assisted by the fault on thermal recovery performance in hydrothermal system |
| title_sort | effects of extraction well assisted by the fault on thermal recovery performance in hydrothermal system |
| topic | Hydrothermal system Fault properties Extraction parameters THM coupling Thermal recovery performance |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X25002229 |
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