| 摘要: |
| 建立了地热热储二维分布模型，对地热生产过程中地热热储的压力响应和冷却效应进行了数值模拟，提出了 利用地热尾水回灌和井内换热相结合的新型对井系统。该系统采用采水井内换热器和地面套管式换热器，既可节 省保温费用’又可减少散热损失。根据井筒传热模型，建立了井内换热器优化设计方法，得出了井内换热器的最佳 长度为360 m。 |
| 关键词: 地热能 新型对井系统 换热器 传热模型 优化设计 |
| DOI： |
| 分类号: |
| 基金项目: |
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| Geothermal energy reservoir model and optimal design of heat-exchanger in well bore |
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LIANG Jin-guo, FANG Ai-bing, ZHANG Xin
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(College of Transport & Storage and Civil Engineering in China University of Petroleum，Dongying 257061, Shandong Province, China)
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| Abstract: |
| A two-dimensional distributed parameter model of geothermal reservoir was established. The pressure maintenance and temperature cooling effect of geothermal reservoir were predicted by numerical simulation. A new-type couple-well heating system was put forward to adopt the techniques of the re-injection of geothermal exhaust water and the heat-exchanger in well bore. The system can save insulating cost and reduce heat loss using heat-exchanger in well bore and casing heat-ex-changer on surface. Based on well bore heat transfer model, an optimal design method of heat-exchanger in well bore was given, and the optimal length of the heat-exchanger in well bore was 360 metres. |
| Key words: geothermal energy new-type couple-well system heat-exchanger he^t transfer model optimal design |
