Rotary steering systems and methods
AssigneeSchlumberger Technology Corporation
InventorsSimon H. Bittleston, Ashley Bernard Johnson, Mauro Caresta, Riadh Boualleg, Joachim Sihler, Huseyin Murat Panayirci
Life of this patent
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Abstract
A drilling system that includes a drill bit that drills a bore through rock. A shaft coupled to the drill bit, wherein the shaft transfers rotational power to the drill bit. A housing that receives at least part of the shaft. A rotary steering system that controls a drilling direction of the drill bit. The rotary steering system includes a steering sleeve that couples to and uncouples from the housing to control a drilling direction of the drill bit.
Claims20
A drilling system, comprising:
- a drill bit configured to drill a bore through rock;
- a shaft coupled to the drill bit, wherein the shaft is configured to transfer rotational power to the drill bit;
- a housing configured to receive at least part of the shaft;
- and
- a rotary steering system configured to control a drilling direction of the drill bit, the rotary steering system comprising:
- a steering sleeve configured to couple to and uncouple from the housing to control a drilling direction of the drill bit.
A system for controlling a drilling direction of a drill bit, the system comprising:
- a housing;
- and
- a rotary steering system comprising:
- a steering sleeve configured to couple to and uncouple from the housing;
- and
- a steering pad coupled to the steering sleeve, wherein the steering pad is configured to rotate with the steering sleeve and to form a steering angle with the drill bit.
A method of controlling a drilling direction of a drill bit, comprising:
- disconnecting a steering sleeve from a housing, wherein the steering sleeve comprises a steering pad configured to form a steering angle with the drill bit;
- and
- actuating a piston to move radially with respect to a longitudinal axis of the steering sleeve to limit rotation of the steering pad.
Dependencies are inferred from the claim text.