Methods and apparatus for expanding tubing with an expansion tool and a cone
AssigneeWeatherford/Lamb, Inc.
InventorDavid John Hillis
Life of this patent
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Abstract
A method of expanding tubing such as a section of casing includes locating the casing in a bore and expanding a portion of the casing to engage the bore wall using an expansion tool having at least one radially movable expansion member. The expansion member may be in the form of a roller of a rotary expander. The method additionally includes subsequently expanding a further portion of the casing by advancing a cone expander through the casing.
Claims30
A method of anchoring and expanding tubing, the method comprising:
- locating tubing in a bore;
- expanding a portion of the tubing to engage the bore wall using an expansion tool having at least one radially movable expansion member;
- and then
- expanding a further portion of the tubing by advancing a fixed diameter cone expander through the tubing, wherein the cone expander is located in the bore and outside the tubing prior to expanding the tubing.
A method of anchoring and expanding tubing, the method comprising:
- locating tubing in a bore;
- expanding a portion of the tubing to engage the bore wall using an expansion tool having at least one radially movable expansion member;
- and then
- expanding a further portion of the tubing by advancing a fixed diameter cone expander through the tubing, wherein the cone expander is located in the bore and outside the tubing prior to expanding the tubing, and wherein said further portion of the tubing is located in unlined bore.
Apparatus for expanding tubing, the apparatus comprising:
- downhole tubing;
- an expansion tool having at least one radially movable expansion member, wherein the expansion tool is releasably coupled to the tubing;
- and
- a cone expander located outside the tubing and coupled to the expansion tool that is releasably coupled to the tubing with said expansion tool located within the tubing.
Dependencies are inferred from the claim text.