A tubing expansion device is adapted to be advanced axially, without rotation, through tubing to be expanded. The device comprises a body and a plurality of expansion members mounted on the body, the expansion members being independently radially movable. The expansion members may be rotatable, or m
A tubing expansion device is adapted to be advanced axially, without rotation, through tubing to be expanded. The device comprises a body and a plurality of expansion members mounted on the body, the expansion members being independently radially movable. The expansion members may be rotatable, or may be non-rotating.
대표청구항▼
1. An expansion device for a tubing, the device comprising: a body; andan expansion cone having a plurality of expansion members, each expansion member being positioned at an angle relative to a longitudinal axis of the body, and at least one of the expansion members being independently radially mov
1. An expansion device for a tubing, the device comprising: a body; andan expansion cone having a plurality of expansion members, each expansion member being positioned at an angle relative to a longitudinal axis of the body, and at least one of the expansion members being independently radially movable relative to the body. 2. The expansion device of claim 1, wherein the expansion cone is a hollow annular member. 3. The expansion device of claim 1, wherein each expansion member is separated from adjacent expansion members by an angled slot. 4. The expansion device of claim 3, wherein the angled slot is filled with a deformable material. 5. The expansion device of claim 1, wherein each expansion member is separated from adjacent expansion members by a spiral slot. 6. The expansion device of claim 1, wherein the expansion members are circumferentially spaced. 7. The expansion device of claim 1, wherein the expansion members are circumferentially spaced. 8. The expansion device of claim 1, further comprising a driving member for applying an axial motive force to the body. 9. The expansion device of claim 8, wherein the driving member is arranged to engage the tubing in which the device is located. 10. The expansion device of claim 8, wherein the driving member comprises a seal member for engaging an inner surface of the tubing. 11. The expansion device of claim 8, wherein the seal member is configured to engage an unexpanded tubing wall. 12. The expansion device of claim 8, wherein the seal member is positioned on the body below the expansion cone. 13. The expansion device of claim 8, wherein an elevated fluid pressure is created above the seal member. 14. The expansion device of claim 13, wherein the elevated fluid pressure is used to move the device axially through the tubing. 15. The expansion device of claim 13, wherein the elevated fluid pressure is used to partially expand the tubing. 16. The expansion device of claim 1, wherein the expansion device is configured to be advanced axially through tubing without rotation. 17. A method of expanding a tubing, the method comprising: positioning an expansion device in the tubing, the expansion device having an expansion cone with a plurality of expansion members, each expansion member being positioned at an angle relative to a longitudinal axis of the expansion device and at least one of the expansion members is independently radially movable relative to the body; and moving the expansion device axially through the tubing to expand the tubing. 18. The method of claim 17, wherein the expansion includes a driving member for moving the expansion device axially through the tubing. 19. The method of claim 18, further comprising creating an elevated fluid pressure above the driving member. 20. The method of claim 19, wherein the elevated fluid pressure is used to move the device axially through the tubing. 21. The method of claim 19, wherein the elevated fluid pressure is used to partially expand the tubing. 22. The method of claim 17, wherein the expansion device is moved axially through the tubing without rotation.
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