Pipe expander

E - Fixed Constructions – 21 – B

Patent

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Details

E21B 43/10 (2006.01) B21D 39/20 (2006.01)

Patent

CA 2618056

An expander is provided for radially expanding a tubular element, the expander having an axially forward direction and being provided with thrust means for exerting a thrust force to the expander to move the expander in axially forward direction through the tubular element. The expander comprises an adjustable cone having an expander surface tapering radially inward in the axially forward direction, the adjustable cone being movable between a radially expanded mode and a radially collapsed mode. The expander further comprises adjusting means for moving the adjustable cone from the collapsed mode to the expanded mode by the action of said thrust force exerted to the thrust means.

La présente invention concerne un élargisseur utilisé pour agrandir de manière radiale un élément tubulaire, l~élargisseur ayant une direction axialement vers l~avant et étant doté d~un moyen de poussée pour exercer une force de poussée sur l~élargisseur pour déplacer l~élargisseur dans la direction axialement vers l~avant via l~élément tubulaire. L~élargisseur comprend un cône réglable ayant une surface d~élargisseur radialement conique vers l~intérieur dans la direction axialement vers l~avant, le cône réglable pouvant être déplacé entre un mode radialement agrandi et un mode radialement écrasé. L~élargisseur comprend en outre un moyen de réglage permettant de déplacer le cône réglable du mode écrasé vers le mode agrandi par l~action de ladite force de poussée exercée sur le moyen de poussée.

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