天津地区地热流体化学成分垂向演化特征研究

摘要

Thechemical composition of Tianjin geothermal fluid has obvious vertical stratification evolution. From shallow to deep, TDS is increased and the hydrochemical type evolution feature is from HCO3-Na to-SO4-Na of Cl-Na. The geothermal fluid has hierarchical evolution characteristics that means geothermal fluid of different geothermal reservoir has different hydrochemical types and evolution segments. These mark recharge, runoff and drainage become a system.%天津地区地热流体化学成分具有明显的垂向分层演化特征，由浅至深不仅有TDS增高、水化学类型由HCO3-Na型向SO4-Na或Cl-Na型演化的特征，而且具有分层演化特征，即不同热储层段的地热流体水化学特征及演化规律不同，说明其补给、径流、排泄自成系统。