Electromagnetic power and communication link particularly...

Details Electromagnetic power and communication link particularly... Electromagnetic power and communication link particularly...

G - Physics

01

V

G01V 3/34 (2006.01) G08C 19/16 (2006.01) E21B 47/12 (2006.01) E21B 47/01 (2006.01)

Patent

CA 2412388

An electromagnetic coupling system is disclosed which includes a first electromagnetic transducer sealingly disposed in an outer wall of a tool mandrel, the mandrel adapted to be positioned in a drill collar. A second electromagnetic transducer is sealingly disposed in an interior of a port in the drill collar. The second transducer is positioned so that it is proximate the first transducer when the mandrel is positioned in the drill collar. A third electromagnetic transducer is sealingly disposed in an exterior of the port in the collar. The second and third transducers define a sealed chamber in the port. The second and third transducers are electrically coupled to power conditioning and signal processing circuits disposed in the chamber. A fourth transducer is positioned proximate the third transducer. The fourth transducer is electrically coupled to at least one of a sensor, an external communication line and an external power line.

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