Timed Steering Nozzle on a Downhole Drill Bit
OwnerDavid R. Hall, Jonathan Marshall +1inventors
InventorsDavid R. Hall, Jonathan Marshall, Scott Dahlgren
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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.
Claims19
A downhole rotary steerable system, comprising:
- a fluid path defined by a bore formed within a drill string component;
- a valve located within a wall of the bore and 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;
- an azimuthal sensing mechanism configured to determine an azimuth of the steering nozzle;
- and
- instrumentation configured to control the valve based off of an input from the azimuthal sensing mechanism.
Dependencies are inferred from the claim text.