Apparatus for completing a subterranean well and associated...

Details Apparatus for completing a subterranean well and associated... Apparatus for completing a subterranean well and associated...

E - Fixed Constructions

21

B

E21B 7/08 (2006.01) E21B 7/06 (2006.01) E21B 29/06 (2006.01)

Patent

CA 2208814

Methods of completing a subterranean well provide access to a portion of a parent wellbore which has been closed off by a lateral wellbore liner. In a preferred embodiment, a method includes the steps of depositing cement in the lateral wellbore liner and then drilling through the cement and liner utilizing a bent motor housing conveyed on coiled tubing. The cement provides lateral support for a cutting tool while it is milling through the liner.

Cette invention concerne des méthodes de complétion de puits permettant d'accéder à un puits principal qui a été isolé par une colonne perdue. Dans une variante privilégiée, la méthode comprend la coulée de ciment dans la colonne perdue et le forage latéral à travers le ciment et la colonne perdue au moyen d'un trépan dévié manoeuvré par tube d'intervention enroulé. Le ciment sert de support latéral au trépan en cours de fraisage à travers la colonne perdue.

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