Wellbore tool with hall effect coupling
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United States of America Patent
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Nov 28, 1989
Issued Date -
N/A
app pub date -
Nov 28, 1988
filing date -
Jan 8, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention is an improved wellbore tool for coupling to a drill string at a threaded junction and adapted for use in a wellbore during drilling. A sensor is disposed in the wellbore tool for sensing a condition and producing a data signal corresponding to the condition. A self-contained power supply is disposed in the wellbore tool and coupled to the sensor for providing power to the sensor as required. The Hall Effect coupling transmitter means is carried by the sensor and for transmitting data from the Hall Effect coupling transmitter means to a Hall Effect coupling receiver carried by the drill string and disposed across the threaded junction from the wellbore tool, wherein data is transmitted across the threaded junction without requiring an electrical connection at the threaded junction.
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