Timed Steering Nozzle on a Downhole Drill Bit
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United States of America Patent
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Issued Date -
Sep 20, 2012
app pub date -
Mar 15, 2011
filing date -
Mar 15, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
In one aspect of the present invention, a downhole rotary steerable system comprises a fluid path defined by a bore formed within a drill string component. A valve located within a wall of the bore which hydraulically connects the bore with a fluid cavity. A steering nozzle disposed on the drill string component and in communication with the fluid cavity. The valve is configured to control flow from the bore to the fluid cavity with an azimuthal sensing mechanism configured to determine the azimuth of the steering nozzle and instrumentation configured to control the valve based off of input from the azimuthal sensing mechanism.
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