江苏海安滨海新区砂岩热储回灌试验研究

Experimental study on heat storage and recharge of sandstone in Binhai New Area,Hai'an,Jiangsu

地热回灌是实现地热资源循环开发利用的重要途径。为提高江苏海安滨海新区地热资源利用率,减缓储层压力下降,减少地热尾水排放引起的环境污染,促进地热资源循环开发利用,在该区开展砂岩热储同层对井回灌试验,分析影响回灌的主要因素,结果该区易于回灌与热储层孔隙度大、渗透率高具有良好的对应,回灌切实可行,为研究区地热资源的可持续开发利用提供依据。

Geothermal recharge is an important way to realize the recycling and utilization of geothermal resources.To improve geothermal resource utilization,mitigate reservoir pressure decline,reduce the environmental pollution caused by the emission of geothermal water,promote development and utilization of geothermal resources circulation in Binhai New Area,Hai'an,Jiangsu,an experimental study on heat storage of sandstone was conducted by well-to-well reinjection in the same layer.By analyzing the main factors affecting the recharge,this paper believes that the area is easy to recharge due to its large heat reservoir porosity and high permeability.Recharging is feasible and can provide the basis for sustainable development and utilization of geothermal resources in the study area.