Apparatus and methods for radially expanding a tubular member
AssigneeE2 Tech Limited
InventorAlan Mackenzie
Life of this patent
Estimating the term…
Abstract
Radially expanding a tubular such as a liner or casing, especially in a downward direction. The apparatus includes at least one driver device such as a piston that is typically fluid-actuated, and an expander device is attached to the or each driver device. Actuation of the or each driver device causes movement of the expander device to expand the tubular. One or more anchoring devices, which may be radially offset, are used to substantially prevent the tubular from moving during expansion thereof.
Claims20
A device for radially expanding a tubular in a wellbore, comprising:
- a conveying pipe;
- an expansion cone coupled to the conveying pipe, wherein the expansion cone is movable relative to the conveying pipe;
- and
- an anchor that is resettable downhole, coupled to the conveying pipe, and fixed in a longitudinal position relative to the conveying pipe.
A device for radially expanding a tubular in a wellbore, comprising:
- an expansion cone fixed in a longitudinal position relative to a support member;
- and
- an anchor that is resettable down hole and is disposed on an outside surface of the support member, wherein the support member is moveable relative to the anchor.
An assembly for radially expanding a tubular in a wellbore, comprising:
- a conveying pipe;
- an expansion cone coupled to the conveying pipe, wherein the expansion cone is movable relative to the conveying pipe;
- a resettable anchor coupled to the conveying pipe and fixed in a longitudinal position relative to the conveying pipe;
- and
- a support member upon which the cone is attached, wherein the support member defines a piston that is in communication with fluid supplied through the conveying pipe, and the support member is movable relative to the conveying pipe in order to move the cone, and wherein the support member defines at least one additional piston in series with the piston.
An assembly for radially expanding a tubular in a wellbore, comprising:
- an expansion cone fixed in a longitudinal position relative to a support member;
- and
- a resettable anchor disposed on an outside surface of a support member, wherein the support member is moveable relative to the anchor and defines a piston that is in communication with fluid supplied to an inside of the support member, and the support member is movable relative to the anchor in order to move the cone, and wherein the support member defines at least one additional piston in series with the piston.
Dependencies are inferred from the claim text.