Downhole apparatus and method for expanding a tubing

Details Downhole apparatus and method for expanding a tubing Downhole apparatus and method for expanding a tubing

E - Fixed Constructions

21

B

E21B 43/10 (2006.01) B21D 31/04 (2006.01) B21D 39/08 (2006.01) B21D 26/02 (2006.01)

Patent

CA 2663922

A method of expanding tubing comprises locating an expansion tool in a section of tubing to be expanded, applying a fluid pressure to the tubing to create a fluid pressure expansion force and induce a hoop stress in the tubing, and applying a mechanical expansion force to the tubing via the expansion tool. The combined fluid pressure expansion force and mechanical expansion force is selected to be sufficient to induce expansion of the tubing.

Méthode d'expansion d'un tube consistant à placer un outil d'expansion dans une section du tubage devant être prolongé, par l'application d'une pression de fluide sur le tubage pour créer une force d'expansion par pression fluidique et provoquer ainsi une contrainte de frettage dans le tubage, et par l'application d'une force d'expansion mécanique au tubage au moyen de l'outil d'expansion. La combinaison de force d'expansion par pression fluidique et de force d'expansion mécanique est choisie de façon à atteindre un niveau suffisant pour provoque l'expansion du tubage.

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