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US 2023/0147178 A1Published application
High ratio reamer
AssigneeSchlumberger Technology Corporation
InventorJuraj Irsa
Life of this patent
Estimating the term…
Abstract
A reamer includes a housing, a flow tube extending along a longitudinal axis of the housing, and a plurality of reamer blocks arranged radially around the flow tube and configured to extend and retract relative to the housing. The reamer has a reamer ratio between 1.8 and 2.5. The reamer ratio is a ratio between an expanded diameter of the reamer when the plurality of reamer blocks is extended and a retracted diameter of the reamer when the plurality of reamer blocks is retracted.
Claims20
A reamer, comprising:
- a housing having a longitudinal axis;
- a flow tube extending along the longitudinal axis of the housing;
- and
- a plurality of reamer blocks arranged radially around the flow tube and configured to extend and retract relative to the housing, wherein a reamer ratio is between 1.8 and 2.5, and the reamer ratio is a ratio between an expanded diameter of the reamer when the plurality of reamer blocks is extended and. a retracted diameter of the reamer when the plurality of reamer blocks is retracted.
1 more element
A reamer, comprising:
- a housing comprising an exterior;
- a reamer block, the reamer block comprising:
- a leading wall, wherein a height of the leading wall is greater than a radius of the housing;
- a trailing wall;
- and
- a radial perimeter;
- wherein a wall-height ratio is between 1.4 and 3.0, and the wall-height ratio comprises a ratio between the height of the leading wall and a height of the trailing wall.
4 more elements
A reamer, comprising:
- a housing having a body around a longitudinal axis and an outer surface, the body defining an interior passage;
- a flow tube extending through the interior passage of the housing;
- a reamer block configured to extend and retract relative to the housing, the reamer block comprising:
- a block transverse axis offset from the longitudinal axis;
- a leading wall;
- and
- a radial perimeter;
- wherein a coverage-to-exposure ratio being less than or equal to 1.00, an exposure is a distance on the leading wall from the outer surface of the housing to the radial perimeter when the reamer block is extended, and a coverage being a length of a contact of the leading wall with the housing when the reamer block is extended.
5 more elements
Dependencies are inferred from the claim text.