常用气体地热温度计的应用及效果评价

基于冰岛部分地热田的实际资料,选择有代表性的、不同温度的地热田,应用CO₂、H₂S、H₂、CO₂/H₂和H₂S/H₂气体地热温度计计算热储温度,深入探讨了影响温度计准确性的各种因素,提出CO₂和H₂S温度计具有良好的实用价值。在热储温度T<200℃时,CO₂温度计的预测温度略低;在200℃<T<300℃范围时,H₂S温度计标定不够准确。并对现有的其它气体地热温度计进行了简要评价。

APPLICATION AND EVALUATION OF GAS GEOTHERMOMETERS

Based on the data derived from the selected typical geothermal fields in Iceland, CO₂, H₂S, H₂, CO₂/H₂ and H₂S/H₂ gas geothermometers were used to calculate reservoir temperature. The factors disturbing accuracy of gas geothermometers were discussed in detail. It is suggested that CO₂ and H₂S geothermometers may give good results. The temperature obtained from CO₂ geothermometer is relatively low, if reservoir temperature is less than 200℃. Calibration of H₂S geothermoter appears to be not accurate enough while the reservoir temperature is in the range of 200℃to 300℃. Other existed gas geothermometers were also evaluated briefly.