Field scale numerical modeling of heat extraction in geothermal reservoir based on fracture network creation with supercritical CO2 as working fluid
文献类型：期刊论文
| 作者 | Liao, Jianxing4,5; Cao, Cheng5; Hou, Zhengmeng2,5; Mehmood, Faisal1; Feng, Wentao5; Yue, Ye5; Liu, Hejuan3 |
| 刊名 | ENVIRONMENTAL EARTH SCIENCES
 |
| 出版日期 | 2020-06-07 |
| 卷号 | 79期号:12页码:22 |
| 关键词 | Supercritical CO2 EGS THM coupled model Fracturing Heat extraction |
| ISSN号 | 1866-6280 |
| DOI | 10.1007/s12665-020-09001-7 |
| 英文摘要 | In geothermal reservoirs, the typically low natural permeability needs to be stimulated for an efficient heat extraction. In this work, the stimulation of heat extraction as well as the associated CO2 sequestration in geothermal reservoirs is studied, based upon supercritical CO2-EGS (enhanced geothermal system) concept in a 3D continuum anisotropic damage-permeability model under thermal-hydraulic-mechanical framework. The developed approach has been applied into the planned Dikili EGS project in Turkey. The simulation results show that a fracture network with a stimulated reservoir volume of 8.71x10(7) m(3) is created by injecting 90,000 kg CO2 in 250 h. A priority channel with high gas saturation in the fracture network is formed during heat extraction because of the viscosity difference between CO2 and water. In general, for both water and CO2 injection, the driven pressure and average thermal capacity shows a positive correlation with injection rate, while the eventual produced temperature shows a negative correlation with injection rate. In comparison with water as working fluid for heat extraction, CO2 owns some benefits like low driven pressure and high eventual produced temperature. Besides, a positive correlation between sequestrated CO2 mass and injection rate is observed. Approximately 950, 000 tons of CO2 are geologically sequestrated under injection rate of 100 kg/s over 30 years of production period. |
| 资助项目 | China Scholarship Council (CSC)[20170808145] ; China Scholarship Council (CSC)[201808080067] ; CAS Pioneer Hundred Talents Program in China ; NSFC[51809259] |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000540688100005 |
| 出版者 | SPRINGER |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/24363]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Cao, Cheng |
| 作者单位 | 1.Univ Engn & Technol Lahore, Dept Petr & Gas Engn, Lahore 54890, Pakistan 2.Sichuan Univ, Energy Res Ctr, Chengdu 610065, Peoples R China 3.State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 4.Guizhou Univ, Coll Civil Engn, Guiyang 550025, Peoples R China 5.Tech Univ Clausthal, Inst Petr Engn, D-38678 Clausthal Zellerfeld, Germany |
| 推荐引用方式 GB/T 7714 | Liao, Jianxing,Cao, Cheng,Hou, Zhengmeng,et al. Field scale numerical modeling of heat extraction in geothermal reservoir based on fracture network creation with supercritical CO2 as working fluid[J]. ENVIRONMENTAL EARTH SCIENCES,2020,79(12):22. |
| APA | Liao, Jianxing.,Cao, Cheng.,Hou, Zhengmeng.,Mehmood, Faisal.,Feng, Wentao.,...&Liu, Hejuan.(2020).Field scale numerical modeling of heat extraction in geothermal reservoir based on fracture network creation with supercritical CO2 as working fluid.ENVIRONMENTAL EARTH SCIENCES,79(12),22. |
| MLA | Liao, Jianxing,et al."Field scale numerical modeling of heat extraction in geothermal reservoir based on fracture network creation with supercritical CO2 as working fluid".ENVIRONMENTAL EARTH SCIENCES 79.12(2020):22. |
入库方式： OAI收割
来源：武汉岩土力学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。