Research on Geothermal Reinjection Mode of Neogene in the Binhai New Area,Tianjin
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摘要: 孔隙型地热资源回灌模式的研究对于实际回灌操作具有重要的指导意义。通过对滨海新区南部孔隙型热储层进行不同回灌模式的回灌试验研究,笔者认为“回扬-回灌”的循环运行方式可以保证该系统回灌的持续性,是现阶段最适宜孔隙型回灌系统的运行方式。对于灌量较小的地热井,应根据实际情况确定最佳回扬时间及回灌率,必要时采用加压回灌,才能更大地发挥地热回灌井的回灌作用,保障区域地热资源可持续发展。Abstract: Research on the reinjection mode of Neogene geothermal resources is an important guidance for the actual injection operation. This article mainly discribe reijection experiments with different recharge mode in the southern part of the Binhai New Area. The result shows that the cycle of "pump lifting-recharge" mode can ensure continuous reinjection for poor effect of geothermal reinjetion. The rate and time of pump lifting should determine by the actual situation,and the method of pressurized injection should be adopted if necessary. The reinjection well of Neogene can play greatest injection capacity by this method, and this aslo can guarantee the sustainable development of regional geothermal resources.
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Key words:
- Binhai New Area /
- Neogene /
- geothermal resouces /
- reinjection /
- pump lifting-injection /
- pressurized injection
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