Method and apparatus for locating faults in wired drill pipe

摘要

A method for determining an electrical condition of a wired drill pipe includes inducing an electromagnetic field in at least one joint 10 of a wired drill pipe. Voltages induced by electrical current flowing in at least one electrical conductor 24 in the at least one wired drill pipe joint 10 are detected. The electrical current is induced by the induced electromagnetic field. The electrical condition is determined from the detected voltages. The fault locating device 26, used for determining an electrical condition of a wired drill pipe, comprises at least one transmitter 28 and at least one receiver 30, wherein the transmitter 28 is used to induce the electromagnetic field in the at least one joint 10 and the receiver 30 is used to respond to the magnetic field induced by the electric current in the electrical conductor 24.