Directional drilling systems and methods
AssigneeSchlumberger Technology Corporation
InventorsJoachim Sihler, Mauro Caresta
Life of this patent
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Abstract
A directional drilling system that includes a drill bit capable of drilling a bore through rock. A shaft couples to the drill bit. The shaft transfers rotational power from a motor to the drill bit. A steering system controls a drilling direction of the drill bit. The steering system includes a sleeve coupled to the shaft. A steering pad couples to the sleeve. The steering pad forms a steering angle with the drill bit. Axial movement of the steering pad with respect to the drill bit changes the drilling direction by changing the steering angle.
Claims20
A directional drilling system, comprising:
- a drill bit;
- a shaft coupled to the drill bit, wherein the shaft is configured to transfer rotational power from a motor to the drill bit;
- a steering system configured to control a drilling direction of the drill bit, the steering system comprising:
- a sleeve coupled to the shaft;
- and
- a first steering pad coupled to the sleeve, wherein the first steering pad is configured to form a steering angle with the drill bit, and wherein axial movement of the first steering pad with respect to the drill bit is configured to change the drilling direction by changing the steering angle.
A directional drilling system, comprising:
- a drill bit;
- a shaft coupled to the drill bit, wherein the shaft is configured to transfer rotational power from a motor to the drill bit;
- a steering system configured to control a drilling direction of the drill bit, the steering system comprising:
- a steering sleeve coupled to the shaft;
- and
- a first steering pad coupled to the steering sleeve, wherein the first steering pad is configured to form a steering angle with the drill bit, and wherein axial movement of the steering sleeve with respect to the drill bit is configured to change the drilling direction by changing the steering angle.
A directional drilling system, comprising:
- a steering system configured to control a drilling direction of a drill bit, the steering system comprising:
- a sleeve;
- and
- a steering pad coupled to the sleeve, wherein the steering pad is configured to form a steering angle with the drill bit, and wherein axial movement of the first steering pad with respect to the drill bit is configured to change the drilling direction by changing the steering angle.
Dependencies are inferred from the claim text.