FIELD: gas and oil production.
SUBSTANCE: procedure for detection of electrical condition of cable drill pipe consists in excitation of electro-magnetic field at least in one link of cable drill pipe. There is recorded voltage excited with electric current at least in one electric conductor of the cable drill pipe. Also, electric current is excited with excited electro-magnetic field. Electric condition is determined by recorded voltage.
EFFECT: raised accuracy.
22 cl, 8 dwg
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