天津山岭子地热田雾迷山组热储流体水化学特征

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在1~2.2g/L之间，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作用、碳酸盐溶解、阳离子交替吸附等作用。

Hydrochemical formation mechanism of heat storage fluid in mifan mountain formation of shanlingzi geothermal field in tianjin And environment

In order to summarize the hydrochemical characteristics and the genesis of the geothermal fluid in the Wumishan formation in shanlingzi geothermal field in Tianjin, the hydrochemical characteristics, formation mechanism and store environment of the Wumishan formation were studied by hydrochemical method.The results showed that the salinity of the geothermal fluid in the mimeshan formation in shanlingzi geothermal field ranged from 1 to 2.2 g/L, and the hydrochemical type was mainly Cl·SO4·HCO3-Na type, which was similar to the ionic component characteristics of the ordovician Cambrian geothermal fluid.The hydrochemical sample points of miyishan 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, ion ratios indicate that the hydrochemical genesis of the geothermal fluid is mainly caused by mixing, carbonate dissolution and cation exchange adsorption.