Integrated electrode resistivity and em telemetry tool

Details Integrated electrode resistivity and em telemetry tool Integrated electrode resistivity and em telemetry tool

G - Physics

01

V

G01V 3/20 (2006.01) E21B 49/00 (2006.01) G01V 3/24 (2006.01) E21B 47/12 (2006.01) E21B 47/022 (2006.01)

Patent

CA 2593943

An integrated electrode resistivity and EM telemetry tool and obtaining both formation resistivity and telemetry data from the integrated tool. An integrated electrode resistivity and EM telemetry tool having a drill collar including a first portion and a second portion separated by an insulated gap and telemetry cartridge carrying telemetry circuitry including a voltage source generating a voltage drop across the insulated gap and an axial current on a drill string that returns through an earthen formation includes an insulated measure electrode connected to the first portion, and resistivity measurement circuitry functionally connected to the measure electrode and the telemetry circuitry.

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