Signals of electromagnetic tool with toroidal coils in highly deviated wells

Abstract The research is aimed at expanding the applicability of logging tool with toroidal coils from vertical to highly deviated wells. Its electromagnetic signals are computed a three-dimensional finite-difference simulation algorithm on computing resources Siberian Supercomputer Center SB RAS, which accompanied by multi-aspect numerical analysis signals. We consider wide range geoelectric models various resistivity contrasts: those oil-, gas- and water-saturated reservoirs having different number horizontal boundaries varying thicknesses, including case fine layering.