Method and apparatus for selective down hole fluid...

Details Method and apparatus for selective down hole fluid... Method and apparatus for selective down hole fluid...

E - Fixed Constructions

21

B

E21B 34/06 (2006.01) E21B 34/14 (2006.01) E21B 43/117 (2006.01)

Patent

CA 2662020

Methods and apparatus for perforating a formation in a wellbore without perforating a well bore casing. The methods and apparatus include an external casing perforating device configured so as not to perforate the casing. The interior of the perforating device serves as a fluid flow path between the casing and the formation following perforation and a valve in the casing selectively opens and closes the flow path.

L'invention concerne des procédés et dispositifs pour perforer une formation dans un puits de forage sans perforer un cuvelage de puits de forage. Les procédés et les dispositifs comprennent un dispositif de perforation de cuvelage externe configuré de manière à ne pas perforer le cuvelage. L'intérieur du dispositif de perforation sert de trajet d'écoulement de fluide entre le cuvelage et la formation à la suite de la perforation, et une vanne dans le cuvelage ouvre et ferme le trajet d'écoulement de manière sélective.

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