Improving collapse resistance of tubing

Details Improving collapse resistance of tubing Improving collapse resistance of tubing

E - Fixed Constructions

21

B

E21B 17/00 (2006.01) C21D 7/12 (2006.01) E21B 43/10 (2006.01)

Patent

CA 2460829

A method of increasing the collapse resistance of a tubular comprises locating a tool having at least one, and typically three, bearing members within a tubular. The bearing members are positioned in engagement with a wall of the tubular to apply a radial force to a discrete zone of the wall. This radial force is then applied to further discrete zones of the wall, the level of radial force being selected such that the collapse resistance of the tubular is increased.

Procédé servant à augmenter la résistance à l'effondrement d'une canalisation et consistant à positionner un outil possédant au moins un et, de préférence, trois éléments de support à l'intérieur de la canalisation. Ces éléments de support sont placés de manière à venir en contact avec une paroi de la canalisation afin d'exercer une force radiale sur une zone discrète de cette paroi. Cette force radiale est ensuite appliquée à d'autres zones discrètes de la paroi, le degré de cette force radiale étant sélectionné de manière à augmenter la résistance à l'affaissement de la canalisation.

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