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| Analysis of the influence of the distance between producing Wells on the enhanced geothermal system |
| Received:August 09, 2021 Revised:December 20, 2021 |
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| DOI：10.7511/jslx20210809003 |
| KeyWord:EGS distance between producing Wells temperature of produced fluid reservoir life total quantity of heat maximum principal stress maximum principal strain |
| Author | Institution |
| 唐巨鹏 |
辽宁工程技术大学 力学与工程学院, 阜新 ;辽宁工程技术大学 新能源研究中心, 阜新 |
| 邱于曼 |
辽宁工程技术大学 力学与工程学院, 阜新 |
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| Abstract: |
| In order to reveal the influence of the distance between producing Wells on the enhanced geothermal system (EGS), a three-dimensional thermal-solid-fluid coupling thermal recovery model considering the different distances between producing Wells was established by numerical simulation with the enhanced geothermal system in Gonghe Basin, Qinghai Province, China as the research object.The effects of the distance between producing Wells of 600 m, 700 m, 800 m, 900 m and 1000 m on EGS temperature field, production fluid temperature, reservoir life, total heat production, maximum principal stress and maximum principal strain were analyzed.The results show that:with the development of thermal mining, the temperature of rock mass around reservoir fractures decreases, and the output temperature decreases with the increase of mining life.Considering production temperature, reservoir life and total heat production, the optimal distance between Wells is found to be 800 m.The distance of production Wells has a great influence on the first principal stress and the first principal strain, so the optimal distance of production Wells should be selected according to the actual situation. |
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