DS GeoTrack-EWR system is currently the world's main geotechnical guidance and reservoir evaluation of the next type of drilling tool. The system uses 400kHz and 2MHz electromagnetic wave to spread information through the stratum medium around well bore.  The receiving end receives the signal and calculate the difference of amplitude ratio and skewing of electrodynamic force to get 12 different compensated resistivity curves and 16 Uncompensated resistivity curve. The system is suitable for a variety of conductive and non-conductive type of drilling fluid. It has large detection depth and strong layering ability; high measurement accuracy for the use of scale antenna to eliminate system error; general communication and other tools can be arbitrarily assembled to it.