VERTICAL INDUCTIVE PROBING METHOD Russian patent published in 2007 - IPC G01V3/08 

FIELD: geo-electro prospecting, possible use during examination of geo-electric composition of Earth to detect abnormally conductive objects, overlapped on top by a layer with reduced specific resistance.

SUBSTANCE: the environment being examined is excited by alternating magnetic field, created by four vertical magnetic momentums, which are positioned on one line in pairs symmetrically in relation to measurement point. Directions of magnetic momentums in each pair are set to mutually opposite. Magnetic momentums, which are positioned on one side of measurement point, are also installed in mutually opposite fashion. Ratio of magnetic momentum to span of internal pair of magnetic momentums is set equal to ratio of magnetic momentum to span of external pair of magnetic momentums. Frequency ratio is measured for real component of horizontal component of magnetic field, parallel to the line, on which magnetic momentums are positioned. On basis of type of frequency ratio of apparent resistance, computed on basis of real component, cut parameters are determined.

EFFECT: increased efficiency.

4 dwg