E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 29/00 (2006.01) B21D 39/20 (2006.01) E21B 29/08 (2006.01) E21B 43/10 (2006.01)
Patent
CA 2459053
There are disclosed tools and apparatus for use in expanding downhole tubing. In one embodiment, there is disclosed a tubing expansion tool (10) comprising a mandrel (14) defining at least one curved support surface (38), and at least one expansion member (24) defining a curved bearing surface (36) for contact with the support surface (38) and corresponding to the mandrel support surface (38), the member (24) being movable relative to the mandrel (14) whereby the surfaces (36,38) are in contact and movable over one another to move the expansion member (24) from a smaller diameter first configuration towards a larger diameter second configuration.
Abercrombie Simpson Neil Andrew
Mackay Alexander Craig
Mackay Graham
Nicoll John Strachan
Trinder Duncan James
Marks & Clerk
Weatherford/lamb Inc.
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