While at PPSDM Migas Cepu I learned a lot about the world of oil and gas, especially the exploration section. There we learned how to calibrate tools, operate geoelectric exploration tools and interpret data from exploration records using Res2div software. and I have completed Practical Work with the Final Report entitled “Identification of Groundwater Using Wenner Resistivity Geoelectric Configuration (Case study in Keser, Tunjungan District, Blora Regency, Central Java)”