Method and apparatus for locating faults in wired drill pipe

Communications: electrical – Wellbore telemetering or control – Using a specific transmission medium

Reexamination Certificate

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C340S855200, C324S221000, C324S346000

Reexamination Certificate

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08072347

ABSTRACT:
A method for determining electrical condition of a wired drill pipe includes inducing an electromagnetic field in at least one joint of wired drill pipe. Voltages induced by electrical current flowing in at least one electrical conductor in the at least one wired drill pipe joint are detected. The electrical current is induced by the induced electromagnetic field. The electrical condition is determined from the detected voltages.

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UK Search Report Application No. GB0712207.0 dated Oct. 4, 2007.

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