System and method for communicating signals in a cased...

Details System and method for communicating signals in a cased... System and method for communicating signals in a cased...

E - Fixed Constructions

21

B

325/27

E21B 47/12 (2006.01) F02B 3/06 (2006.01)

Patent

CA 1297163

71456-90 ABSTRACT OF THE DISCLOSURE A system and method are disclosed for wireless two-way communication in a cased borehole having tubing extending therethrough. A downhole communications subsystem is mounted on the tubing. The downhole subsystem includes a downhole antenna for coupling electromagnetic energy in a TEM mode to and/or from the annulus between the casing and the tubing. The downhole subsystem further includes a downhole transmitter/receiver coupled to the downhole antenna, for coupling signals to and/or from the antenna.

568406

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