DEVICE FOR MARINE ELECTRIC EXPLORATION OF OIL AND GAS FIELDS AND ITS IMPLEMENTATION Russian patent published in 2017 - IPC G01V3/06 

FIELD: physics.

SUBSTANCE: device includes a set of the bottom stations with measuring channels and electric exploration receiving lines with the measuring electrodes. The electrodes are arranged on the receiving line in such a way as to form one spacing relatively symmetrical against the station for each station, equal to the length of the receiving line. Moreover, the electrodes are located for measuring by the adjacent stations on the spit facing each other to measure the field in the same point. The stations are also provided with the spacing symmetrical against the station, having a size of less than 10 times the length of the generator dipole, but not less than 10 m. The method uses a set of the above-described bottom stations. Herewith the signals are registered in the time and frequency field both during the current pulses and in pauses between them for each position of the dipole generator arising on the pairs of the receiving electrodes. When analyzing the signals, the profile sections are isolated, where the signals of the electrodynamic formation and the formation of the induced polarization have opposite signs, by changes of which the anomalies of the IP are revealed along the profile. The section of the resistivity is built along the profile according to the signals in the time and frequency field for the remote and vertical soundings. The presence of the hydrocarbon deposits is judged according to the anomaly correlation of the induced polarization and resistivity.

EFFECT: increasing the forecast accuracy by providing continuous measurements.

3 cl, 7 dwg