Technological challenges of geothermal exploration

The most pressing technological challenges in exploration and investigation of Enhanced<br>Geothermal Systems (EGS) and Unconventional Geothermal Resources (UGR) are<br>considered to be those associated with the identification of the nature of geothermal heat<br>concentrations and prospective reservoirs without drilling, the improvement of methods<br>predicting reservoir performance/lifetime, the optimization of resource exploitation producing<br>the lowest possible effect to the environment.<br>A list of important research themes is provided, allowing a spatial and temporal<br>reconstruction of the subsurface geothermal condition that might not only cut the time from<br>discovery to production and improve efficiency, but also reduce environmental impacts<br>forecasting possible problems and finding solutions beforehand.