Methods and apparatus for a downhole tool

E - Fixed Constructions – 21 – B

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E21B 33/124 (2006.01) E21B 23/06 (2006.01) E21B 34/14 (2006.01)

Patent

CA 2660505

An apparatus and method for operating a packer and a fracture valve is shown. The packer may include a tubular mandrel having a longitudinal bore with an annular packing element and a first piston disposed around the mandrel, wherein the first piston is operable to set the packing element, and a second piston operable to isolate fluid communication between the first piston and the mandrel bore. The fracture valve may include a tubular mandrel having a longitudinal bore and a port, a piston operable to close fluid communication between the bore and the port, and a latch disposed between the piston and the mandrel operable to resist movement of the piston.

La présente invention illustre un appareillage et une méthode d'utilisation d'une garniture d'étanchéité et d'une soupape de rupture. La garniture d'étanchéité peut comprendre un mandrin tubulaire muni d'un alésage longitudinal avec un élément de garniture annulaire et un premier piston placé autour du mandrin, où le premier piston fonctionnant de façon à placer l'élément de garniture, et un second piston fonctionnant de façon à isoler la communication fluidique entre le premier piston et l'alésage du mandrin. La soupape de rupture peut comprendre un mandrin tubulaire muni d'un alésage et d'un orifice, un piston fonctionnant de façon à couper la communication fluidique entre l'alésage et l'orifice, et un verrou placé entre le piston et le mandrin et fonctionnant de façon à résister au mouvement du piston.

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