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西藏羊八井地热田热流体化学成分主要是以氯化钠为主的地下热水.在地热田未开采的深部,地热流体是处于高温高压过饱和的液相状态,其中溶解有大量的CO_2、H_2S等气体.当地热流体从地下深部往地表上升过程中,由于压力、温度迅速降低,地热流体变成了三相,详见表1.液相—流出井口的地下热水或出露地表的温泉水;气相—溶解气体因压力降低而
The chemical composition of the thermal fluid in the Yangbajing geothermal field in Tibet is mainly groundwater with sodium chloride as the main component. In the unexploded deep geothermal field, the geothermal fluid is in a supersaturated liquid state at high temperature and pressure with a large amount of dissolved CO 2 , H 2 S. When the local hot fluid rises from the deep underground to the surface, the geothermal fluid becomes three-phase due to the rapid decrease of pressure and temperature, as shown in Table 1. Liquid Phase - Underground hot water flowing out of the wellhead or exposed surface Of the hot spring water; gas phase - dissolved gas due to pressure drop