Downhole safety valve apparatus and method

E - Fixed Constructions – 21 – B

Patent

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E21B 34/10 (2006.01)

Patent

CA 2582469

A safety valve (100) replaces an existing safety valve (102) in order to isolate a production zone from a tubing string when closed. Preferably the safety valve (100) includes a flow interruption device (106) displaced by an operating conduit extending from a surface location to the safety valve (100) through the inside of the production tubing. A by-pass conduit (150) allows communication from a surface location to the production zone through the safety valve (100) without affecting the operation of the safety valve (100).

L'invention concerne une soupape de sûreté permettant de remplacer une soupape de sûreté existante afin d'isoler une zone de production d'un train de tubes lorsque la soupape est fermée. De préférence, la soupape de sûreté comprend un dispositif d'interruption de flux déplacé par une canalisation fonctionnelle s'étendant d'une emplacement situé à la surface à la soupape de sûreté à travers l'intérieur du tube de production. L'invention concerne également un conduit de décharge qui permet d'établir une communication entre un emplacement situé à la surface et la zone de production à travers la soupape de sûreté sans répercussions sur le fonctionnement de la soupape de sûreté.

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