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US 2010/0139980 A1Published application
Ball piston steering devices and methods of use
AssigneeSchlumberger Technology Corporation
InventorsFabio Neves, Alexander Slocum
Life of this patent
Estimating the term…
Abstract
The invention provides ball piston steering devices and methods for use of ball piston devices. One aspect of the invention provides a ball piston steering device including: a sleeve in fluid communication with a fluid source and a ball received within the sleeve. The ball is movable within the sleeve from a recessed position and an extended position.
Claims21
A ball piston steering device comprising:
- a sleeve in fluid communication with a fluid source;
- and
- a ball received within the sleeve;
- wherein the ball is movable within the sleeve from a recessed position and an extended position.
1 more element
A steerable rotary tool comprising:
- a rotary cylinder;
- and
- one or more ball piston steering devices, located on the exterior of the cylinder, each of the ball piston steering devices comprising:
- a sleeve in fluid communication with a fluid source;
- and
- a ball received within the sleeve;
- wherein the ball is movable within the sleeve from a recessed position and an extended position.
4 more elements
A method of drilling a curved hole within a wellbore comprising:
- providing a steerable rotary tool comprising:
- a rotary cylinder;
- a cutting surface;
- and
- one or more ball piston steering devices, located on the exterior of the cylinder, each of the ball piston steering devices comprising:
- a sleeve in fluid communication with a fluid source;
- and
- a ball received within the sleeve;
- wherein the ball is movable within the sleeve from a recessed position and an extended position;
- rotating the steerable rotary tool within the wellbore;
- and
- selectively actuating at least one of the one or more ball pistons to deflect the steerable rotary tool from the wellbore, thereby drilling a curved hole within the wellbore.
9 more elements
Dependencies are inferred from the claim text.