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 2445033

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.

La présente invention concerne un procédé d'expansion d'un tube de production comprenant la mise en place d'un outil d'expansion dans une section du tube de production demandant une expansion, l'application d'une pression fluidique au tube de production de façon à créer une force d'expansion par pression fluidique et induire une contrainte annulaire dans le tube de production, et l'application d'une force d'expansion mécanique au tube de production via un outil d'expansion via l'outil d'expansion. La combinaison de la force d'expansion par pression du fluide et de la force d'expansion mécanique est choisie de façon à être suffisante pour induire l'expansion du tube de production.

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