Patent ID: 8264230
Filing Date: 2012-09-11
Classification: G01V,Y02A

Abstract:
1. A method of marine electrical exploration during vessel motion, consisting in the following: the geological medium in the motion of vessel is examined along the observation line by exciting of periodical alternating current pulses in the medium, for which purpose bipolar rectangular direct current pulses are generated, the length and relative pulse duration of which are set by program basing on the total conductivity of the geological section and the expected depth of the deposit, the electric field is measured simultaneously on pairs of receiving electrodes of a multi-channel receiver line both for the direct current pulses and in pauses between them, for a given point of the medium the parameters of a layered conducting and polarizable medium of the given point of the observation profile are so selected that the value of characteristics of estimated field of the medium would be equal to the simultaneous measurements on all the pairs of the multi-channel receiver line obtained both for the direct current pulses and in pauses between them, then selection of parameters of the layered conducting and polarizable medium of the geological section is repeated for each given point of the observation profile, geoelectrical sections are constructed, and conclusions are made on the existence of a hydrocarbon deposit basing on the identified anomalies of conductivity and induced polarization parameters, and wherein the electric field is measured based on the spatial averaging of potential of the double electric layer arising on the electrode-water boundary during vessel motion, on pairs of receiving sectional electrodes of the receiver multi-channel line.