A numerical study of non-Darcy flow in EGS heat reservoirs during heat extraction
文献类型：期刊论文
| 作者 | Cao, Wenjiong1; Huang, Wenbo1; Wei, Guoling2; Jin, Yunlong2; Jiang, Fangming1
|
| 刊名 | FRONTIERS IN ENERGY
 |
| 出版日期 | 2019-09-01 |
| 卷号 | 13期号:3页码:439-449 |
| 关键词 | enhanced geothermal system non-Darcy flow heat extraction Reynolds number Forchheimer number |
| ISSN号 | 2095-1701 |
| DOI | 10.1007/s11708-019-0612-4 |
| 通讯作者 | Jiang, Fangming(fm_jiang2000@yahoo.com) |
| 英文摘要 | Underground non-Darcy fluid flow has been observed and investigated for decades in the petroleum industry. It is deduced by analogy that the fluid flow in enhanced geothermal system (EGS) heat reservoirs may also be in the non-Darcy regime under some conditions. In this paper, a transient 3D model was presented, taking into consideration the non-Darcy fluid flow in EGS heat reservoirs, to simulate the EGS long-term heat extraction process. Then, the non-Darcy flow behavior in water- and supercritical CO2 (SCCO2)-based EGSs was simulated and discussed. It is found that non-Darcy effects decrease the mass flow rate of the fluid injected and reduce the heat extraction rate of EGS as a flow resistance in addition to the Darcy resistance which is imposed to the seepage flow in EGS heat reservoirs. Compared with the water-EGS, the SCCO2-EGS are more prone to experiencing much stronger non-Darcy flow due to the much larger mobility of the SCCO2. The non-Darcy flow in SCCO2- EGSs may thus greatly reduce their heat extraction performance. Further, a criterion was analyzed and proposed to judge the onset of the non-Darcy flow in EGS heat reservoirs. The fluid flow rate and the initial thermal state of the reservoir were taken and the characteristic Forchheimer number of an EGS was calculated. If the calculated Forchheimer number is larger than 0.2, the fluid flow in EGS heat reservoirs experiences non-negligible non-Darcy flow characteristic. |
| WOS关键词 | ENHANCED GEOTHERMAL SYSTEMS ; 3-DIMENSIONAL TRANSIENT MODEL ; CO2 ; SIMULATION ; EXCHANGE |
| 资助项目 | National Key R&D Program of China[2018YFB1501804] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDA21060700] ; National Natural Science Foundation of China[41702256] ; Natural Science Foundation of Guangdong Province[2017A030310328] |
| WOS研究方向 | Energy & Fuels |
| 语种 | 英语 |
| WOS记录号 | WOS:000486205000003 |
| 出版者 | HIGHER EDUCATION PRESS |
| 资助机构 | National Key R&D Program of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; Natural Science Foundation of Guangdong Province |
| 源URL | [http://ir.giec.ac.cn/handle/344007/25655]  |
| 专题 | 中国科学院广州能源研究所 |
| 通讯作者 | Jiang, Fangming |
| 作者单位 | 1.Chinese Acad Sci, Guangdong Key Lab New & Renewable Energy Res & De, CAS Key Lab Renewable Energy, Guangzhou Inst Energy Convers,Lab Adv Energy Syst, Guangzhou 510640, Guangdong, Peoples R China 2.Guangdong Hydrogeol Battal, Guangzhou 510510, Guangdong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cao, Wenjiong,Huang, Wenbo,Wei, Guoling,et al. A numerical study of non-Darcy flow in EGS heat reservoirs during heat extraction[J]. FRONTIERS IN ENERGY,2019,13(3):439-449. |
| APA | Cao, Wenjiong,Huang, Wenbo,Wei, Guoling,Jin, Yunlong,&Jiang, Fangming.(2019).A numerical study of non-Darcy flow in EGS heat reservoirs during heat extraction.FRONTIERS IN ENERGY,13(3),439-449. |
| MLA | Cao, Wenjiong,et al."A numerical study of non-Darcy flow in EGS heat reservoirs during heat extraction".FRONTIERS IN ENERGY 13.3(2019):439-449. |
入库方式： OAI收割
来源：广州能源研究所
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