The  heavy-heat linkage steam displacement and energy extraction technology for dry hot rock geothermal resources has the following advantages: 1) No complex fracturing operations are required, which is less difficult to realize, saves economic costs, and avoids the connection problem of fractures between traditional EGS wells and fracturing-induced earthquakes; 2) The heat transfer medium circulates heat exchange in the closed wellbore and does not come into direct contact with the formation. On the one hand, the problems of equipment corrosion and scaling are avoided. On the other hand, the heat transfer medium will not carry a large amount of minerals or harmful substances to the ground., so that it will not cause pollution; 3) After the liquid heat transfer working medium absorbs geothermal heat and is vaporized, a pressure difference occurs in the wellbore between the injected liquid heat transfer working medium and the vaporized gaseous heat transfer working medium, and the vaporized heat transfer working medium returns under the action of the pressure difference. Therefore, there is no need to use conveying equipment to lift the hot fluid, reducing energy consumption; 4) The upper insulating heat extraction pipe, the lower insulating heat extraction pipe and the heat conduction and heat transfer pipe are all located inside the geothermal single well, which effectively reduces heat loss during the heat extraction process and greatly improves the heat extraction efficiency. At the same time, the heat transfer working medium is completely recycled, and there will be no problem of loss of heat extraction efficiency caused by the loss of heat transfer working medium.

 (This achievement was released by the Technology Transfer Office of Qingdao Universities and Institutions)