Field work by the Vertical Electric Current Soundings (VECS) showed the possibility of detection and delineation of special zones in oil deposits. Results VECS can refine the outline of deposit, and in general, adjust the plan of drilling. This possibility arises in VECS method, as a new effect in the geoelectromagnetic soundings - geomagnetic effect. Geomagnetic effect is associated with the effect of Lorentz in magnetic field of the Earth. It depends on the presence of hydrocarbons dispersed in the pore space. We have this effect in VECS because we have the full compensation of the normal field.


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