Communications: electrical – Wellbore telemetering or control – Selective control of subsurface equipment
Patent
1987-11-04
1989-07-04
Steinberger, Brian S.
Communications: electrical
Wellbore telemetering or control
Selective control of subsurface equipment
340854, 34087031, 324323, G01V 100
Patent
active
048454931
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; the method and apparatus also having a battery saving switch that extends the life of the battery carried by the tubular member in a compartment that shields the battery from the well bore environment.
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Hughes Tool Company
Hunn Melvin A.
Steinberger Brian S.
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