北京城区典型地热对井地热资源潜力开发研究

Analysis of the Geothermal Double-well System Potential Evaluation in Beijing Geothermal Field

地热田对井模式经过10a以上的验证，取得了良好的环境经济效益，但随着出水温度逐年降低，地热资源未来开发远景备受关注。以北京城区122～123对井为例，分析了地热构造条件、热井运行模式，利用相关热储参数和监测数据，计算出目前热能平均开采量为1．03×10^2kJ／a，静态热储量为5．395×10^11d／a，从能量角度出发认为未来仍有近10000a的理论开发潜力。

Through many years operating,double-well system has obtain a good environmental and economic benefits in Beijing geothermal field,but with the water temperature gradually decreased,the future development of geothermal resources aroused deeply concern.This paper selects No 122-123# double-well as classical case.Through analyzing geothermal tectonic conditions,thermal wells operating mode and parameters data of thermal energy storage,calculated the current annual extraction volume heat is 5.12×106kJ/a and static thermal reserves 2.73×1011kJ/a.From the energy point of view,there is development potential for ten thousands of years in the future.