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US 2006/0137877 A1Published application
Cutter for wellbore casing
OwnerBrock Watson, David Briscoinventors
Life of this patent
Estimating the term…
Abstract
A cutter for a wellbore casing is provided that includes a rotatable tubular support, at least one cutter blade supported on the rotatable tubular support, having a retracted position for insertion into the wellbore casing and having an expanded position for cutting engagement with the wellbore casing, and an actuator for moving the cutter blade from the retracted position to the expanded position for cutting engagement with the wellbore casing.
Claims40
A cutter tool for a wellbore casing, comprising:
- a rotatable tubular support;
- at least one cutter blade supported on the rotatable tubular support, having a retracted position for insertion into the wellbore casing and having an expanded position for cutting engagement with the wellbore casing;
- and
- an actuator for moving the cutter blade from the retracted position to the expanded position for cutting engagement with the wellbore casing;
- wherein the cutter blade includes an interior sliding surface and the expander device includes a ramp surface moveable by the actuator along the tubular support in sliding engagement with the interior sliding surface of the cutter blade to pivot the cutter blade between the retracted position and the expanded position.
2 more elements
A casing cutting tool, comprising:
- an upper tubular support member;
- an upper cam assembly comprising:
- a tubular base;
- and
- a plurality of cam arms extending from the tubular base in a downward longitudinal direction, each cam arm defining an inclined surface;
- a plurality of upper cutting segments interleaved with the cam arms of the upper cam assembly and pivotally coupled to the upper tubular support member;
- a lower tubular support member;
- a lower cam assembly comprising:
- a tubular base;
- and
- a plurality of cam arms extending from the tubular base in an upward longitudinal direction, each cam arm defining an inclined surface that mates with the inclined surface of a corresponding one of the upper cutter blade segments;
- wherein the cams arms of the upper cam assembly are interleaved with and overlap the cam arms of the lower cam assembly;
- and
- a plurality of lower non-cutting segments interleaved with cam arms of the lower cam assembly and the upper cutting segments, each lower non-cutting segment pivotally coupled to the lower tubular support member and mating with the inclined surface of a corresponding one of the cam arms of the upper cam assembly.
11 more elements
A method for cutting a wellbore casing comprising:
- providing a plurality of cutter blades supported on a rotatable tubular support;
- placing the plurality of cutter blades in a retracted position;
- inserting the tubular support into the wellbore casing with the cutter blades supported in the retracted position;
- actuating the cutter blades in the wellbore to expand into a cutting position to engage with the wellbore casing by moving corresponding ramp surfaces into engagement with the cutter blades;
- and
- rotating the tubular support with the cutter blades supported thereon so that the wellbore casing is cut by the rotating cutter blades.
3 more elements
A method of radially expanding cutter blades for cutting a wellbore casing in a wellbore, comprising:
- supporting the expandable tubular member using a tubular support member and an expandable cutter tool;
- injecting a fluidic material into the tubular support member;
- actuating the expandable cutter tool radially outwardly relative to the wellbore casing and into cutting engagement with the wellbore casing using the injected fluidic material;
- rotating the expandable cutter tool in cutting engagement with the wellbore casing when the expandable cutter tool is expanded radially outwardly relative to the wellbore casing;
- continuing to rotate the expandable cuter tool in cutting engagement with the wellbore casing until an upper portion of the wellbore casing is severed from the wellbore casing;
- maintaining the expandable cutter tool in the radially expanded position after the upper portion of the wellbore casing is severed;
- and
- raising the expandable cutter tool with the severed casing portion supported thereon out of the wellbore.
5 more elements
A cutter tool for a tubular member, comprising:
- a rotatable tubular support;
- at least one cutter blade supported on the rotatable tubular support, having a retracted position for insertion into the tubular member and having an expanded position for cutting engagement with the tubular member;
- and
- an actuator means for moving the cutter blade from the retracted position to the expanded position for cutting engagement with the tubular member.
1 more element
A system for cutting a tubular member comprising:
- means for providing a plurality of cutter blades supported on a rotatable tubular support;
- means for placing the plurality of cutter blades in a retracted position;
- means for inserting the tubular support into the tubular member with the cutter blades supported in the retracted position;
- means for actuating the cutter blades in the tubular member to expand into a cutting position to engage with the tubular member;
- and
- means for rotating the tubular support with the cutter blades supported thereon so that the tubular member is cut by the rotating cutter blades.
3 more elements
A system for radially expanding cutter blades for cutting a tubular member in a preexisting structure, comprising:
- means for supporting the expandable tubular member using a tubular support member and an expandable cutter tool;
- means for injecting a fluidic material into the tubular support member;
- and
- means for actuating the expandable cutter tool radially outwardly relative to the tubular member and into cutting engagement with the tubular member using the injected fluidic material.
1 more element
A cutter tool for a tubular member, comprising:
- a rotatable tubular support;
- a plurality of cutting elements supported on the rotatable tubular support, having a retracted position for insertion into the tubular member and having an expanded position for cutting engagement with the wellbore casing;
- a plurality of non-cutting elements supported on the rotatable tubular support, having a retracted position for insertion into the tubular member and having an expanded position;
- an actuator for moving the cutting and non-cutting elements from the retracted positions to the expanded positions;
- wherein the cutting elements are interleaved with the non-cutting elements;
- and
- wherein, in the retracted positions, the cutting elements and the non-cutting elements are positioned away from one another in an axial direction;
- and
- wherein in the expanded positions, the cutting elements and the non-cutting elements are brought together in the axial direction.
6 more elements
A method of cutting a tubular member, comprising:
- interleaving a plurality of cutting elements with a plurality of non-cutting elements;
- positioning the cutting elements and non-cutting elements within the tubular member;
- rotating and translating the cutting elements and the non-cutting elements until the cutting elements engage the tubular member;
- and
- rotating the cutting elements relative to the tubular member to cut the tubular member.
2 more elements
A system for cutting a tubular member, comprising:
- means for interleaving a plurality of cutting elements with a plurality of non-cutting elements;
- means for positioning the cutting elements and non-cutting elements within the tubular member;
- means for rotating and translating the cutting elements and the non-cutting elements until the cutting elements engage the tubular member;
- and
- means for rotating the cutting elements relative to the tubular member to cut the tubular member.
2 more elements
Dependencies are inferred from the claim text.