西安市高陵区地热资源特征与成井工艺研究  

Study on geothermal resource characteristics and well formation technology in Gaoling District of Xi′an

作　　者：肖明君 高亮 赵岩 刘现川 焦丁 宋玺权 张星 XIAO Ming-jun;GAO Liang;ZHAO Yan;LIU Xian-chuan;JIAO Ding;SONG Xi-quan;ZHANG Xing(The Second Geological Team of Hebei Coalfield Geology Bureau/Hot and Dry Rock Research Center of Hebei Province,Xingtai Hebei 054000,China)

机构地区：[1]河北省煤田地质局第二地质队/河北省干热岩研究中心,河北邢台054000

出　　处：《地下水》2023年第1期135-138,共4页Ground water

摘　　要：西安市高陵区地热资源丰富,主要发育碎屑岩类孔隙型地热资源。本文基于高陵区历史地质资料,综合高陵区地热资源特征,以研究区某地热井施工实例为重点,对该地热井成井工艺进行研究。结果可知:研究区该地热井井深3088m,成井工艺主要采用二开成井,开采热储层为新近系中新统高陵群组及古近系渐新统白鹿塬组,取水层段2460.00~3060.00m,出水量110.00 m^(3)/h(自流量),井口水达温91.0℃,属中温地热资源。水化学类型为Cl-Na型水,总矿化度7.146~12.352 g/L,属咸水~盐水,以碳酸钙计总硬度320.3~745.7mg/L,属硬水~极硬水,pH值7.1~7.84,属中性水,且水中含有多种对人体有益的微量元素,开发利用前景广阔。研究结果为后续开展地热资源勘查开发奠定基础。The Gaolingdistrict of Xi’an is rich in geothermal resources,mainly developed clastic rockpore typegeothermal resources.Based on the historical geological data of Gaoling area and the characteristics of geothermal resources in Gaoling area,this paper focuses on the construction example of a geothermal well in the study area to study the hot well completion technology.The results are as follows:The geothermal well in the study area is 3088m deep,and the well formation technology is mainly adoptstwo opening well,the mining thermal reservoirs are Neogene Miocene Gaoling Group and Paleocene Oligocene Bailuyuan Group,the water intake interval 2460.00~3060.00 m,the water yield 110.00 m^(3)/h(self-flow rate),and the water temperature at the wellhead reached 91.0℃,which belongs tothe medium-temperature geothermal resources.The water chemical type is Cl-Na water,the total salinity is 7.146~12.352 g/L,which belongs to salt water~salt water,the total hardness calculated by calcium carbonate is 320.3~745.7 mg/L,which belongs to hard water~extremely hard water,pH value is 7.1~7.84,which belongs to neutral water,and the water contains a variety of trace elements beneficial to human body,the development and utilization prospect is broad.The results of this study lay a foundation for further exploration and development of geothermal resources.

关 键 词：高陵区 地热资源特征 成井工艺 热矿水 

分 类 号：P314.1[天文地球—固体地球物理学] TE24[天文地球—地球物理学]