System for drilling deivated boreholes
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United States of America Patent
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-
Apr 25, 1995
Issued Date -
N/A
app pub date -
Feb 1, 1994
filing date -
May 15, 1991
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Improved techniques are provided for drilling a deviated borehole through earth formations utilizing a rotary bit powered by a drill motor, and for obtaining information regarding the borehole or earth formations. A sensor permanently positioned in the drilling string between the drill bit and the drill motor detects a downhole parameter. An MWD tool may be provided within a non-magnetic portion of the drill string for receiving and transmitting a sensor representative signal to the surface. The sensor signal allows the drilling operation to be altered, and highly reliable and near-bit information thus improves the drilling operation.
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