Liner hanger with sliding sleeve valve

E - Fixed Constructions – 21 – B

Patent

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Details

E21B 43/10 (2006.01) E21B 23/00 (2006.01) E21B 33/14 (2006.01) E21B 33/16 (2006.01) E21B 34/06 (2006.01) E21B 34/14 (2006.01)

Patent

CA 2466685

An apparatus and method for forming or repairing a wellbore casing, a pipeline, or a structural support is disclosed. An expandable tubular member is radially expanded and plastically deformed by an expansion cone that is displaced by hydraulic pressure. Before or after the radial expansion of the expandable tubular member, sliding sleeve valve within the apparatus permit a hardenable fluidic sealing material to be injected into an annulus between the expandable tubular member and a preexisting structure.

La présente invention concerne un appareil et un procédé qu'on utilise pour former ou réparer un tubage de revêtement de puits de forage, un pipeline ou un support de structure. Dans ce procédé, un élément tubulaire extensible (20a) est radialement étiré et plastiquement déformé par un cône (18) de dilatation qui est déplacé par la pression hydraulique. Avant ou après l'étirement radial de l'élément tubulaire extensible (20a), une soupape à manchon coulissant (42) située dans l'appareil permet d'injecter un matériau d'étanchéité fluide durcissable dans un espace annulaire prévu entre l'élément tubulaire extensible (20a) et la structure préexistante.

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