Energy

Underground study

In order to find the most suitable areas to exploit geothermal resources, surveys are conducted both on the surface and underground. The results of the survey are used to understand what are the geological, hydro-geological, thermal characteristics and the output capacity of the geothermal system. Surface analyses include: the exam of the underground thermal conditions and the location of possible reservoirs. First of all, the geothermal gradient is measured in various points of the area and obvious signs as smoke-holes and spas are looked for. In this respect, data provided by the chemical analysis of gas and water can be very useful. The identification of a reservoir is the most complex part of the exploration, since it calls for the integration of the results of all the geological, volcanic, geo-chemical, geo-physical (gravimetric, geo-electric, seismic, etc.) surveys previously carried out. The underground survey is conducted by drilling a well to verify the hypotheses that have been put forward.