| Numerical simulation of multi-field coupling in geothermal reservoir heat extraction of enhanced geothermal systems | |
Zeng, Zhi1,2; Shen, Weijun1,2 ; Wang, Mingcang1,2; Li, Zhiyu1,2; Wang, Xiangyang3; Ding, Jianghui3
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| Corresponding Author | Shen, Weijun(wjshen763@imech.ac.cn) |
| Source Publication | JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY
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| 2024-04-08 | |
| Pages | 12 |
| ISSN | 2190-0558 |
| Abstract | The coupled analysis of multi-field heat and mass transfer in geothermal reservoirs is a pivotal concern within the realm of geothermal rock exploitation. It holds significant implications for the assessment of thermal energy capacity and the formulation of reservoir optimization strategies in the context of geothermal rock resources. Parameters governing production, along with fracture network characteristics (such as injection well temperature, injection well pressure, fracture width, and fracture network density), exert an influence on enhanced geothermal systems (EGS) heat production. In this study, aiming to comprehend the dynamic heat generation of EGS during prolonged exploitation, a coupling of various fields including permeation within the rock formations of geothermal reservoirs and the deformation of these rocks was achieved. In this study, we formulated the governing equations for the temperature field, stress field, and permeability field within the geothermal reservoir rock. Subsequently, we conducted numerical simulations to investigate the heat transfer process in an enhanced geothermal system. We analyzed the effects of injection well temperature, injection well pressure, primary fracture width, and secondary fracture density on the temperature distribution within the reservoir and the thermal power output of the production well. The research findings underscore that ill-conceived exploitation schemes markedly accelerate the thermal breakthrough rate of production wells, resulting in a diminished rate of geothermal resource extraction from the geothermal reservoir rock. Variations in influent well temperature and secondary fracture density exhibit an approximately linear impact on the output from production wells. Crucially, injection well pressure and primary fracture width emerge as pivotal factors influencing reservoir output response, with excessive widening of primary fractures leading to premature thermal breakthrough in production wells. |
| Keyword | Dry heat rock Multi-field coupled Seepage flow heat transfer Crack width Reservoir optimization |
| DOI | 10.1007/s13202-024-01775-x |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:001198071900002 |
| WOS Keyword | 3-DIMENSIONAL TRANSIENT MODEL ; DESIGN ; EGS |
| WOS Research Area | Energy & Fuels ; Engineering ; Geology |
| WOS Subject | Energy & Fuels ; Engineering, Petroleum ; Geosciences, Multidisciplinary |
| Funding Project | National Natural Science Foundation of China |
| Funding Organization | National Natural Science Foundation of China |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/94900 |
| Collection | 流固耦合系统力学重点实验室 |
| Corresponding Author | Shen, Weijun |
| Affiliation | 1.Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 3.CNPC Engn Technol Res & Dev Co Ltd, Beijing 102206, Peoples R China |
| Recommended Citation GB/T 7714 | Zeng, Zhi,Shen, Weijun,Wang, Mingcang,et al. Numerical simulation of multi-field coupling in geothermal reservoir heat extraction of enhanced geothermal systems[J]. JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY,2024:12. |
| APA | Zeng, Zhi,Shen, Weijun,Wang, Mingcang,Li, Zhiyu,Wang, Xiangyang,&Ding, Jianghui.(2024).Numerical simulation of multi-field coupling in geothermal reservoir heat extraction of enhanced geothermal systems.JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY,12. |
| MLA | Zeng, Zhi,et al."Numerical simulation of multi-field coupling in geothermal reservoir heat extraction of enhanced geothermal systems".JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY (2024):12. |
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