山西地热能开发无干扰供热先导试验研究与实践

Research and practice on pilot test of non-interfering heating in Shanxi geothermal energy development

摘要:

地热能开发利用对实现节能减排、绿色低碳发展具有重要意义。针对山西浅层高温地热田无干扰供热技术无应用先例、技术体系不完善等问题，通过研究试验区地质特征，集成钻探工艺、井下换热、供热控制等关键技术，提出了山西浅层高温地热田开发利用无干扰供热先导试验技术思路。试验表明：钻探试验井井深295.72 m，井底温度经测109.9 ℃，采用无干扰井下换热供热技术，系统循环流量16.90 m³/h，即可满足面积2500 m²临建供热需求，室内平均温度22 ℃。无干扰供热先导试验在山西浅层高温地热田试验成功，现场供暖效果良好，试验成果为山西浅层高温地热田开发利用提供了宝贵经验和技术支撑。

Abstract:

The development and utilization of geothermal energy is of great significance for achieving energy conservation， emission reduction， and green and low-carbon development. In response to the problems of no application precedent and incomplete technical system of non-interfering heating technology in Shanxi shallow high-temperature geothermal fields， a pilot test technology for the development and utilization of non-interfering heating in Shanxi shallow high-temperature geothermal fields is proposed by studying the geological characteristics of the experimental area， integrating key technologies such as drilling technology， underground heat exchange， and heating control. The experiment shows that the drilling test hole has a depth of 295.72m， and the temperature at the bottom of the well has been measured to be 109.9℃. Using non-interference underground heat exchange and heating technology， the system has a circulating flow rate of 16.90m³/h， which can meet the heating needs of a temporary building with an area of 2500m² with an average indoor temperature of 22℃. The non-interference heating pilot test was successful in the shallow high-temperature geothermal field in Shanxi， and the on-site heating effect was good. The test results provide valuable experience and technical support for the development and utilization of shallow high-temperature geothermal fields in Shanxi.