天津市大港区地热井回灌模式探讨  

Discussion on recharge mode of geothermal well in Dagang District of Tianjin City

作　　者：高志娟[1,2] 李铎[1,2] 李书恒 

机构地区：[1]石家庄经济学院,河北石家庄050031 [2]河北省水资源可持续利用与开发重点实验室,河北石家庄050031 [3]山西西龙池抽水蓄能电站,山西忻州035503

出　　处：《人民长江》2012年第1期22-24,41,共4页Yangtze River

摘　　要：为了探讨对地热井热储层进行回灌的效果,以天津大港区地热回灌井为实例,采用4种回灌模式进行回灌试验,分析在各种模式下的回灌能力及可延续时间、累积回灌动水位及吸水指数历时变化。试验结果表明:在自然间歇条件下回灌延续时间短,可灌能力不佳;在"回扬-回灌"模式下,回扬时间越长,回灌延续时间越长,回灌量越大;加压回灌模式下回灌量呈现衰减,表明回灌操作方式对系统回灌能力有很大影响。In order to discuss the effects of geothermal well recharge, taking the geothermal well in Dagang District of Tianjin City as an example, four recharge modes are adopted for experiments. The recharge capacity, possible recharge duration, accumulation recharge dynamic water level and diachronic variation of injectivity index under the four modes are analyzed. The experi- mental results show that the recharge duration is short and recharge capacity is poor under the mode of natural intermission ; in the lifting - recharge mode, the longer the pump lifting time is, the longer the recharge duration is and the more the recharge volume is. The recharge volume under the pressure mode is decreasing. The operation mode influences the recharge capacity of the system greatly.

关 键 词：地热井 回灌模式 吸水指数 回灌量 天津市 

分 类 号：P641.25[天文地球—地质矿产勘探]