Combined electric field telemetry and formation evaluation...

Details Combined electric field telemetry and formation evaluation... Combined electric field telemetry and formation evaluation...

G - Physics

01

V

G01V 3/18 (2006.01) E21B 47/12 (2006.01) G01V 3/24 (2006.01) G01V 3/28 (2006.01)

Patent

CA 2300029

An apparatus for borehole electric-field telemetry that comprises a source of modulated voltage or current, at least one axially non-conductive collar connected between pipe sections in a pipe string, and a system of insulated wireline components providing electrical connections, insulated from drilling fluids, between the ends of the one or more aforementioned insulated collars in the pipe string, to transmit the voltage or current.

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