Technological challenges in exploration and investigation of EGS and UGR.

ABSTRACT: The most pressing technological challenges in exploration and investigation of Enhanced Geothermal Systems (EGS) and Unconventional Geothermal Resources (UGR) are considered to be those associated with the identification of the nature of geothermal heat concentrations and prospective resources prior to drill and the improvement of methods allowing a spatial and temporal reconstruction of the subsurface geothermal condition that might not only cut the time from discovery to production and improve efficiency while guaranteeing sustainability of the resource, but also reduce environmental impacts forecasting possible problems and finding solutions beforehand. A list of important research themes is provided.