Setting tool for expandable liner hanger and associated methods

E - Fixed Constructions – 21 – B

Patent

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Details

E21B 23/00 (2006.01) E21B 43/10 (2006.01)

Patent

CA 2701955

A setting tool for an expandable liner hanger. A method includes the steps of : releasably securing the setting tool to the hanger, the setting tool including an expansion cone for displacing through the hanger; and conveying the setting tool and hanger into the well on a generally tubular work string while no portion of the hanger extends longitudinally between the expansion cone and the work string. A setting tool includes an expansion cone, which is displaceable through the liner hanger to expand the hanger; at least one piston positioned on one side of the expansion cone; and an anchoring device for releasably securing the setting tool to the liner hanger, the anchoring device being positioned on an opposite side of the expansion cone. The expansion cone is pressure balanced between its two sides when the expansion cone is displaced through the liner hanger.

La présente invention concerne un outil de pose pour un dispositif de suspension de colonne perdue. Un procédé comprend les étapes suivantes : la fixation amovible de l'outil de pose au dispositif de suspension, l'outil de pose comportant un cône d'expansion pour se déplacer à travers le dispositif de suspension ; et le déplacement de l'outil de pose et du dispositif de suspension dans le puits sur un train de tiges de forage globalement tubulaire sans qu'aucune partie du dispositif de suspension ne s'étende longitudinalement entre le cône d'expansion et le train de tiges de travail. L'invention concerne également un outil de pose comportant un cône d'expansion, qui est apte à se déplacer à travers le dispositif de suspension de colonne pour dilater le dispositif de suspension ; au moins un piston disposé d'un côté du cône d'expansion ; et un dispositif d'ancrage pour la fixation amovible de l'outil de pose au dispositif de suspension de colonne, le dispositif d'ancrage étant disposé sur le côté opposé du cône d'expansion, Le cône d'expansion est équilibré en pression entre ses deux côtés lorsque le cône d'expansion se déplace à travers le dispositif de suspension de colonne.

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