埕宁隆起区高水温地热资源影响因素研究

Study on the factors influencing high water temperature geothermal resources in Chengning uplift area

埕宁隆起区属于典型的层状热储,地热井口水温往往小于60℃,但是以山东省宁津县相衙镇为代表的深部岩溶热储,水温却高达78~82℃,存在明显的高水温异常。本文在收集以往研究成果的基础上,采用地热地质专项调查、地球物理勘探、岩矿测试等工作手段,初步查明了断裂构造是引起区内深部岩溶热储高水温的主控因素,并明确热源、水源、盖层、通道、热储层各个相关因子,从而建立热储概念模型,为区内深部岩溶热储地热资源的合理开发提供指导意义。

Chengning uplift area is a typical layered heat reservoir,and the geothermal wellhead water temperature is usually less than 60℃,but the deep karst heat reservoir,represented by Xiangya Town,Ningjin County,Shandong Province,has a high water temperature of 78-82℃,and there are obvious high water temperature anomalies.On the basis of collecting previous research results,this paper uses special geothermal geological survey,geophysical exploration,rock and mineral testing and other work methods to preliminologically identify fault structure as the main factor causing the high water temperature of deep karst thermal reservoir in the area,and identify the related factors of heat source,water source,cap layer,channel and thermal reservoir,so as to establish a conceptual model of thermal reservoir.It provides guiding significance for the rational development of geothermal resources in deep karst thermal reservoir.