E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 43/10 (2006.01) E21B 29/00 (2006.01) E21B 29/08 (2006.01) E21B 41/00 (2006.01)
Patent
CA 2447270
A method of expanding tubing downhole comprises providing a section of expandable tubing (14) of a first diameter and comprising slots or apertures (16), and axially compressing the tubing to induce buckling, such that the buckled portion describes a larger second diameter. The resulting diametric expansion may be utilised to anchor or seal the tubing within a larger bore.
La présente invention concerne un procédé de mandrinage de tubage en fond de puits. A cet effet, on prend un segment de tubage mandrinable (14) d'un premier diamètre et comprenant des fentes ou des ouvertures (16), et on comprime axialement le tubage de façon à induire un flambage tel que la partie flambée décrive un second diamètre plus grand. L'augmentation de diamètre ainsi obtenue peut s'utiliser pour ancrer ou jonctionner le tubage à l'intérieur d'un trou plus grand.
Abercrombie Simpson Neil Andrew
Hosie David Graham
Mackay Alexander Craig
Marks & Clerk
Weatherford/lamb Inc.
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