Method and apparatus for expanding an isolation tubing

Details Method and apparatus for expanding an isolation tubing Method and apparatus for expanding an isolation tubing

E - Fixed Constructions

21

B

E21B 29/10 (2006.01) B21D 17/04 (2006.01) B21D 39/04 (2006.01) B21D 39/10 (2006.01) E21B 29/00 (2006.01) E21B 33/138 (2006.01) E21B 33/16 (2006.01) E21B 43/10 (2006.01)

Patent

CA 2356144

A method of isolating a section of downhole tubing comprises: running a length of expandable tubing (20) into a tubing-lined borehole (12, 14) and positioning the expandable tubing (20) across a section of tubing to be isolated; deforming at least portions of the expandable tubing (36, 40) to increase the diameter of the portions to sealingly engage the tubing (14) and to isolate the tubing section.

L'invention concerne un procédé permettant d'isoler une section de tubage fond de trou, qui comporte les étapes consistant à faire passer une longueur de tubage expansible (20) dans un trou de forage (12, 14) garni de tubage, et placer le tubage expansible (20) à travers une section de tubage à isoler; déformer au moins des parties du tubage expansible (36, 40) de façon à accroître le diamètre de ces parties pour qu'elles entrent en contact étanche avec le tubage (14), et à isoler la section de tubage.

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