B - Operations – Transporting – 21 – D
Patent
B - Operations, Transporting
21
D
B21D 28/28 (2006.01) B21C 37/06 (2006.01) B26F 1/02 (2006.01) E21B 17/00 (2006.01) E21B 43/10 (2006.01)
Patent
CA 2440375
The invention provides a method of forming expandable downhole tubing which includes steps of: providing a tubing section of a first diameter; forming apertures in the tubing section; and reducing the first diameter of the apertured tubing section to a second diameter which is smaller than the first, whereby a cross-sectional area of the tubing section is reduced. When lining a borehole, the reduced-diameter apertured tubing section is run into a borehole, and then expanded in the borehole to a diameter which is greater than its reduced diameter.
L'invention concerne un procédé pour former un tube extensible (10) de pompage, ce procédé consistant à préparer une section de tube (12) d'un premier diamètre, à former des ouvertures dans cette section de tube (12), puis à réduire le diamètre de la section de tube pourvue d'ouvertures.
Marks & Clerk
Weatherford/lamb Inc.
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