Electrical Imaging to Aid Well Drilling Locations

With the increase in the water crisis, the drilling of tube wells has increased and consequently the search for methods to identify aquifers. For this purpose, applied geophysics has been increasingly sought after. In this work, using the geoelectric technique of multi-electrode electrical imaging with variable geometry, the aim was to locate structural lineaments in subsurface rocks that are capable of storing water. Four cases of aquifers in crystalline rocks were analyzed: i) three of them in metasediments and granitic bodies of the Araxá Group; ii) and another in the gneissic-migmatitic domes of the Itabaiana - Simão Dias Formation. The data acquired was processed and interpreted according to the geological information for each region. To evaluate the geophysical response, in all situations the wells were drilled according to the results of the electrical imaging and in all of them the drilled wells showed water flow.