Back to results
US 2014/0231136 A1Published application
Apparatus and method for rotary steering
AssigneeHalliburton Energy Services, Inc.
InventorDaniel Winslow
Life of this patent
Estimating the term…
Abstract
A method and system for steering a rotary steerable tool in a borehole. A method includes rotating a deflection sleeve about a steerable shaft. A deflection ramp is aligned to deflect the shaft in a predetermined direction by the rotating. The deflection sleeve is axially displaced along the steerable shaft. The steerable shaft is deflected by the displacing.
Claims23
A method for steering a tool in a borehole, comprising:
- aligning a deflection ramp to deflect a steerable shaft in a predetermined direction by rotating a deflection sleeve about the steerable shaft;
- displacing the deflection sleeve axially along the steerable shaft, engaging the deflection ramp with a shaft ramp;
- and
- angularly deflecting the steerable shaft by the displacing.
1 more element
A rotary steering tool, comprising:
- a steerable shaft;
- a deflection sleeve disposed about the shaft;
- and
- a rotation resistant housing disposed about the deflection sleeve;
- wherein the deflection sleeve determines an angular deflection direction of the steerable shaft by rotating within the housing about the shaft and independent of rotation of the shaft.
2 more elements
A steering control system, comprising:
- a non-transitory computer readable medium encoded with instructions that when executed by a processor cause the processor to:
- determine a rotational position of a deflection sleeve within a rotation resistant housing;
- and
- rotate the deflection sleeve to a rotational position that positions the deflection sleeve to deflect a steerable shaft in a predetermined direction.
1 more element
Dependencies are inferred from the claim text.