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US 2006/0219440 A1Published application
Slip grip drilling tool
AssigneeTechnology Ventures International Limited
InventorsAlexander MacKay, Simon Fraser, James Hewson
Life of this patent
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Abstract
A directional drilling apparatus for mounting a drill bit on a rotatable drill support comprises a member for transmitting rotation from the drill support to a drill bit, and a body mounted to the member. The body is configurable to offset a portion of the member relative to an axis of the body such that directional drilling may be achieved.
Claims42
A directional drilling apparatus for mounting a drill bit on a rotatable drill support, the apparatus comprising:
- a member for transmitting rotation from a rotatable drill support to a drill bit;
- and
- a body mounted to the member and comprising a plurality of relatively movable parts, at least part of the body being configurable to resist rotation in a bore, and the body further being configurable such that application of force to at least a part of the body causes parts of the body to move relative to one another and offset a portion of said member relative to an axis of the body.
A directional drilling method comprising the steps:
- providing a drill bit on a bit-mounting member in a body;
- mounting the member on a drill support and locating the bit, member and body in a bore;
- applying a force to the body to move parts of the body relative to one another and offset a portion of the bit-mounting member from an axis of the body;
- and
- rotating the drill support to rotate the drill bit, such that a deviated bore is drilled.
2 more elements
Dependencies are inferred from the claim text.