The project I-GET is aimed at developing an innovative strategy of geophysical exploration. This strategy integrates all the available knowledge, from rock physics to seismic and magnetotelluric (MT) data processing and modelling, and exploits the full potential of seismic and electromagnetic exploration methods to detect permeable zones and fluid bearing fractures. The Groß Schönebeck (Germany) deep sedimentary reservoir is respresentative for large sedimentary basins all over Europe with a borehole currently used as an in situ geothermal laboratory. The main objectives of the geophysical site characterization experiments is to develop high resolution combined electrical conductivity with P- and S-velocity tomographic models for a joint interpretation.