Cam indexing apparatus
AssigneeHalliburton Energy Services, Inc.
InventorRory Archibald Napier
Life of this patent
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Abstract
An indexing apparatus for use with a downhole tool may include a tubular body and a mandrel. The tubular body may have a first end and a second end. The tubular body may also have a plurality of body detents on the second end of the tubular body and a recess in a surface of the tubular body. The mandrel may include a plurality of mandrel detents on a surface of the mandrel. The mandrel detents may be sized and shaped to engage with the body detents on the second end of the tubular body. The indexing apparatus may also include a cam sized to be received in the recess of the surface of the tubular body and a spring coupled to the first end of the tubular body.
Claims18
An indexing apparatus comprising:
- a tubular body comprising:
- a first end and a second end;
- a plurality of body detents on the second end of the tubular body, each body detent of the plurality of body detents having a first length and being helically cut;
- and
- a recess in a surface of the tubular body, the recess having a second length that is greater than the first length of each body detent;
- a mandrel comprising a plurality of mandrel detents on a surface of the mandrel, each mandrel detent of the plurality of mandrel detents being sized and shaped to engage with a body detent of the plurality of body detents on the second end of the tubular body, and each mandrel detent of the plurality of mandrel detents being helically cut;
- a cam sized to be received in the recess of the surface of the tubular body;
- and
- a spring coupled to the first end of the tubular body.
A tubing assembly, comprising:
- a tubing string comprising a housing defining an inner region of the tubing string;
- a valve positioned in the inner region of the tubing string;
- and
- an indexing apparatus positioned within the inner region of the tubing string and coupled to the valve, the indexing apparatus further comprising:
- a tubular body having a first end and a second end, the tubular body having a plurality of body detents on the second end of the tubular body, each body detent of the plurality of body detents having a first length, the tubular body also having a recess in a surface of the tubular body, wherein the recess has a second length that is greater than the first length of each body detent of the plurality of body detents,
- a mandrel comprising a plurality of mandrel detents on a surface of the mandrel, the mandrel detents being sized and shaped to engage with the body detents on the tubular body,
- a cam sized to be received in the recess of the surface of the tubular body, and
- a spring coupled to the first end of the tubular body.
An indexing assembly comprising:
- a first tubular body having a plurality of detents on a first end wherein each detent of the plurality of detents is helically cut and has a first length, a surface of the first tubular body defining an inner region of the first tubular body;
- and
- a second tubular body having a plurality of detents on a surface of the second tubular body wherein each detent is helically cut, the plurality of detents being sized to receive the plurality of detents on the first end of the first tubular body, a first end of the second tubular body being sized to be received in the inner region of the first tubular body,
- a spring configured to apply a force to a second end of the first tubular body, wherein the force applied by the spring opposes a force applied to a second end of the second tubular body,
- a cam sized to be received within a recess in the surface of the first tubular body, the recess having a second length that is greater than the first length,
- wherein the first tubular body is rotatable with respect to the second tubular body and may move axially along a longitudinal axis, and
- wherein the second tubular body is movable axially along the longitudinal axis.
Dependencies are inferred from the claim text.