摘要
为总结天津山岭子地热田雾迷山组热储流体水化学特征及成因,通过水化学方法研究了雾迷山组热储流体水化学特征、形成机理及其赋存环境。结果表明:山岭子地热田雾迷山组地热流体的矿化度为1~2.2 g/L,水化学类型主要为Cl·SO4·HCO3-Na型,与奥陶寒武系热储流体离子组分特征相似;雾迷山组水化学样品点在Na-K-Mg平衡图中位于不平衡区。可见雾迷山组地热流体与上覆基岩热储存在水力联系,离子比值分析结果表明地热流体水化学成因主要为混合、碳酸盐溶解、阳离子交替吸附等作用。
In order to summarize the hydrochemical characteristics and the genesis of the geothermal fluid in the Wumishan Formation in Shanlingzi geothermal field in Tianjin,factors such as the hydrochemical characteristics,formation mechanism and store environment of the Wumishan Formation were studied by hydrochemical method.The results show that the salinity of the geothermal fluid in the Wumishan formation in Shanlingzi geothermal field ranges from 1 g/L to 2.2 g/L,and the main hydrochemical type is Cl·SO4·HCO3-Na type,which is similar to the ionic component characteristics of the ordovician Cambrian geothermal fluid.The hydrochemical sample points of Wumishan Formation are located in the unequilibrium region in the Na-K-Mg equilibrium diagram.It can be seen that the geothermal fluid in the Wumishan formation is hydraulically related to the the overlying bedrock geothermal reservior.The analysis of ion ratio indicates that the hydrochemical genesis of the geothermal fluid is mainly caused by mixing,carbonate dissolution and cation exchange adsorption.
作者
岳冬冬
李胜涛
贾小丰
张秋霞
冯昭龙
杨涛
YUE Dong-dong;LI Sheng-tao;JIA Xiao-feng;ZHANG Qiu-xia;FENG Zhao-long;YANG Tao(Center of Hydrogeology and Environmental Geology,China Geological Survey,Baoding 071051,China;Technology Innovation Center of Geothermal&Hot Dry Rock Exploration and Development,Ministry of Natural Resources,Baoding 071051,China;Key Laboratory of Groundwater Resources and Environment,Ministry of Education,Jilin University,Changchun 130021,China)
出处
《科学技术与工程》
北大核心
2020年第36期14847-14853,共7页
Science Technology and Engineering
基金
国家重点研发计划(2018YFC0604305)
自然资源部中国地质调查项目(DD20190127)
天津潘庄凸起构造区地热资源调查项目(DD20179621)。
关键词
山岭子地热田
雾迷山组
水化学
离子比值
Shanlingzi geothermal field
Wumishan formation
hydrochemistry
ion ratio
