Modular reamer
AssigneeT.J. Technology 2020 Inc.
InventorsLaurier E. Comeau, Jayson Russell
Life of this patent
Estimating the term…
Abstract
A modular reamer for use in a wellbore comprises an uphole end member, a center member, and a downhole member, with reamer sleeves that removably slides over a sleeve mounting portion of the center member or one of the end members, and are held between the end members and the center members when assembled into a downhole tool. The reamer sleeves may be positioned at any desired rotational angle relative to each other and are prevented from rotational movement relative to the center member by spines or keys formed on the mating surfaces of the reamer sleeves and corresponding members of the modular eccentric reamer.
Claims19
A downhole tool, comprising:
- a first end member;
- a center member, threadedly connected to the first end member;
- a second end member, threadedly connected to the center member;
- a first removable reamer sleeve, slidably disposed about a splined portion of the first end member or the center member and held in place between a shoulder of the first end member and a first shoulder of the center member;
- and
- a second removable reamer sleeve, slidably disposed about a splined portion of the first second end member or the center member and held in place between a second shoulder of the center member and a shoulder of the second end member,
- wherein each of the first removable reamer sleeve and the second removable reamer sleeve are separately positionable at a plurality of rotational angles relative to the center member,
- wherein the first removable reamer sleeve and the second removable reamer sleeve are configured for enlarging a borehole.
A pair of removable reamer sleeves for a downhole tool, each comprising:
- a sleeve body, held in place between a shoulder of a corresponding end member of the downhole tool and a corresponding shoulder of a center member of the downhole tool;
- and;
- a plurality of cutter blades formed on an outer surface of the sleeve body, wherein the plurality of cutter blades are configured for enlarging a borehole;
- and
- a plurality of splines formed longitudinally about an inner surface of the sleeve body, configured for slidable engagement with a corresponding plurality of spines formed on the center member of the downhole tool.
A method of reaming a wellbore, comprising:
- rotating a first removable reamer sleeve to a first rotational angle relative to a center member of a modular reamer tool;
- sliding the first removable reamer sleeve onto a first end of the center member of the modular reamer tool;
- connecting the center member of the modular reamer tool with a first end member of the modular reamer tool, wherein the first removable reamer sleeve is disposed between a shoulder of the first end member and a first shoulder of the center member;
- rotating a second removable reamer sleeve to a second rotational angle relative to the center member;
- sliding the second removable reamer sleeve onto a second end of the center member;
- and
- connecting the center member with a second end member of the modular reamer tool, wherein the second removable reamer sleeve is disposed between a shoulder of the second end member and a second shoulder of the center member;
- coupling the modular reamer tool to a drill string;
- and
- rotating the drill string in the wellbore,
- wherein the first removable reamer sleeve is configured for enlarging the wellbore.
Dependencies are inferred from the claim text.