Large bore packer and methods of setting same

E - Fixed Constructions – 21 – B

Patent

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E21B 17/08 (2006.01) E21B 23/02 (2006.01) E21B 23/06 (2006.01) E21B 33/12 (2006.01) E21B 43/10 (2006.01) E21B 47/12 (2006.01)

Patent

CA 2667735

Devices and methods for setting a packer inside a wellbore with little appreciable reduction of the useable area of the wellbore. The outer casing or liner of the wellbore contains one or more integrated casing coupler joints having an increased diameter chamber portion. A large bore packing element is carried within the increased diameter chamber portion. The packing element may be selectively actuated to form a seal against an interior tubular member. Because the packing element is located within the chamber portion of the casing coupler, the packer may be set while saving useable cross-sectional area within the casing.

L'invention concerne des dispositifs et des procédés de placement d'une garniture d'étanchéité à l'intérieur d'un puits avec une réduction appréciable faible de la surface utilisable du puits. Le tubage extérieur ou la colonne perdue du puits contient un ou plusieurs raccords d'accouplement de tubage intégrés présentant une partie chambre de diamètre accru. Un élément de garnissage de puits de grand diamètre est acheminé à l'intérieur de la partie chambre de diamètre accru. L'élément de garnissage peut être sélectivement actionné afin de former un joint étanche contre un élément tubulaire intérieur. Etant donné que l'élément de garnissage est placé à l'intérieur de la partie chambre de l'élément d'accouplement, la garniture d'étanchéité peut être placé tout en préservant la section transversale utilisable à l'intérieur du tubage.

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