FOUR-POINT METHOD OF ELECTRIC PROSPECTING Russian patent published in 1998 - IPC

FIELD: electric prospecting with drilling or surface operations for reservoirs filled with hydrocarbons, search for other mineral resources, geological mapping and other geological investigations. SUBSTANCE: in compliance with proposed method distance between measurement electrodes, distance between one of exciting electrodes and measurement electrode nearest to it and distance between exciting electrodes are chosen equal to terms of series of kind of L_r= L_r-1+L_r-2, where r = 3, 4,...; L₁= G=G; L_r= 2G=2G is base of series. First two of mentioned distances may be adjacent terms of this series. EFFECT: increased efficiency of method. 1 cl, 1 dwg