Method and apparatus for continuously injecting fluid in a...

E - Fixed Constructions – 21 – B

Patent

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E21B 33/00 (2006.01)

Patent

CA 2611101

A kit for converting an existing wireline retrievable surface controlled subsurface safety valve (170, 270, 370) into a bypass passageway apparatus (100) allowing the injection of production-enhancing fluid into a wellbore while maintaining the operation of the closure member (374). Bypass passageway (280) can extend between upper (260) and lower (275) adapters external to the existing wireline retrievable surface controlled subsurface safety valve (270) to allow fluid injection bypass thereof. Conversion kit can include a tubing string hanger to suspend a velocity tubing string (407, 507), a gas lift valve (475) for gas lift operations, a locking mandrel (220), and/or a spacer tube (240).

La présente invention a trait à une trousse pour la conversion d'une soupape de sûreté souterraine (170, 270, 370) commandée en surface récupérable par un câble métallique existant en un appareil à passage de dérivation (100) permettant l'injection d'un fluide d'amélioration de production dans un trou de forage tout en maintenant le fonctionnement de l'organe d'obturation (374). Le passage de dérivation (280) peut s'étendre entre des adaptateurs supérieur (260) et inférieur (270) extérieurs à la soupape de sûreté souterraine (270) commandée en surface récupérable par un câble métallique existant pour en permettre la dérivation d'injection de fluide. La trousse de conversion peut comporter un dispositif de suspension de colonne de tubage pour la suspension d'une colonne de tubage de vitesse (407, 507), une soupape de gas-lift (475) pour des opérations d'éjection, un mandrin de verrouillage (220), et/ou un tube d'espacement (240).

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