E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
324/9
E21B 47/12 (2006.01) E21B 47/01 (2006.01) H03F 15/00 (2006.01)
Patent
CA 1255358
ABSTRACT An improved method and apparatus of transmitting data signals within a well bore having a string of tubular members suspended within it, employing an electromagnetic field producing means to transmit the signal to a magnetic field sensor, which is capable of detecting constant and time- varying fields, the signal then being conditioned so as to regenerate the data signals before transmission across the subsequent threaded junction by another electromagnetic field producing means and magnetic sensor pair.
546675
Howard Mig A.
Gowling Lafleur Henderson Llp
Hughes Tool Company
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