中国典型干热岩潜力区的地热深井部署

我国干热岩开发研究领域起步晚,在深部地质、地热、水文地质、钻探、地球物理等多方面存在难题。高温深井钻探的难度大、投资高和风险大,布井是高温地热资源开发需解决的首要问题。科学布井可以降低钻探难度、风险和投资。干热岩试验靶区遴选结果显示:羊八井、腾冲、漳州等为我国典型干热岩开发潜力区。但我国干热岩地热深井钻探超前于基础理论研究,钻探存在盲目性、低效性和不确定性。本文对上述3个典型干热岩潜力区的地热深井布署条件做了分析,其结果具有重要理论价值和实践价值,可促进我国干热岩开发研究。

On deployment of high- temperature deep geothermal wells in typical areas with hot dry rock potential in China

In our country, researchof hot dry rock development started late, and there exist many difficult issues in this field involving deep geology, geotherm, hydrogeology, drilling, and geophysics. Among them, the high- temperature well drilling is facing the issues of large difficulty, high investment and high risk. Reasonable deployment of wells is fundamental for development of high-temperature geothermal resources, which can reduce the drilling difficulty, risk and investment. The selection results of test targets show that the Yangbajing, Tengchong, and Zhangzhou are typical hot dry rock areas with development potential. But the deep geothermal well drilling is in advance of basic theory research, leading to blindness, low efficiency and uncertainty in drilling projects. This work has analyzed the deployment conditions of deep geothermal wells in the three typical areas of hot dry rock potential aforementioned, and the results are of high theoretical and practical values, and can promote the research of China''s development of hot dry rock resources.