增强型地热系统(EGS)的应用与发展

Application and Development of Enhanced Geothermal Systems(EGS)

地热资源以其储量大、范围广、绿色清洁的特点备受大家的青睐。自20世纪70年代至今,全球实施的干热岩开发项目中有16个项目采用了增强型地热系统(EGS)。在我国丰富地热资源赋存的背景下,青海共和盆地干热岩勘查与试采科技攻坚战,将我国干热岩地热资源科技攻关从实验室带入了场地开发阶段。

Geothermal resources with its reserves of large,wide range,green and clean characteristics are favored by everyone.Since the 1970s,enhanced geothermal systems(EGS)have been used in 16 projects around the world,covering countries in addition to the United States,Italy,Germany,Austria,Switzerland,France,El Salvador and other countries.Under the background of abundant geothermal resources in China,the scientific and technological battle of dry hot rock exploration and trial exploitation in Gonghe Basin of Qinghai Province has brought the scientific and technological research of dry hot rock geothermal resources in China from the laboratory to the stage of site development.In the research and application of enhanced geothermal systems,it is suggested to pay attention to the application of geophysical exploration means,target selection and hole location selection,high-temperature hard rock drilling technology and hydraulic fracturing connectivity.