Expander system for incremental expansion of a tubular element

E - Fixed Constructions – 21 – B

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

Patent

CA 2523350

An expander system for radially expanding a tubular element from a first inner diameter to a second inner diameter larger than the first inner diameter, the expander system including an expander movable between a radially retracted mode and a radially expanded mode, wherein the expander includes an expansion surface extending in axial direction of the expander and being operable to expand the tubular element upon movement of the expander from the retracted mode to the expanded mode thereof, said expansion surface being of increasing diameter in axial direction of the expander.

L'invention concerne un système d'écarteur permettant d'élargir de façon radiale un élément tubulaire et de le faire passer d'un premier diamètre intérieur à un second diamètre intérieur, supérieur au premier diamètre intérieur. Ce système comprend un écarteur pouvant passer d'un mode rétracté de façon radiale à un mode déployé de façon radiale. Ce système comprend une surface d'écartement qui s'étend dans une direction axiale de l'écarteur, pouvant être utilisée pour élargir l'élément tubulaire lorsque l'écarteur passe du mode rétracté au mode déployé. Le diamètre de cette surface augmente dans la direction axiale de l'écarteur.

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