Well bore data transmission system with battery preserving switch
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United States of America Patent
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Jul 4, 1989
Issued Date -
N/A
app pub date -
Nov 4, 1987
filing date -
Jan 8, 1987
priority date (Note) -
Expired
status (Latency Note)
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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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