Gas lift system with retrievable gas lift valve

Details Gas lift system with retrievable gas lift valve Gas lift system with retrievable gas lift valve

E - Fixed Constructions

21

B

E21B 34/06 (2006.01) E21B 34/16 (2006.01) E21B 43/12 (2006.01) E21B 43/16 (2006.01)

Patent

CA 2183458

A system for inserting injection fluid into a stream of hydrocarbon fluid flowing through a wellbore formed in an earth formation is provided. The system comprises a production conduit (11) for conveying said stream of hydrocarbon fluid through the wellbore to the earth surface, said conduit being provided with at least one valve chamber (15) which is suitable to receive a retrievable valvebody (19) therein, said valve body including a valve (25) which is controllable via an electric circuit connected to surface control equipment so as to move the valve between an open position thereof whereby the valve provides fluid communication between said stream and a fluid injection channel extending in the wellbore, and a closed position thereof whereby the valve prevents fluid communication between said stream and said fluid injection channel. The electriccircuit comprises an inductive coupler including a primary coil (29) provided atthe production conduit and a secondary coil (31) provided at the valve body.

Système destiné à introduire un fluide d'injection dans un flux d'hydrocarbure circulant dans un puits de forage formé dans une couche terrestre. Ce système comprend une colonne de production (11) destinée à acheminer le flux d'hydrocarbure dans le puits de forage vers la surface de la terre, cette colonne étant dotée d'au moins une chambre (15) à soupape conçue pour loger un corps de soupape (19) amovible, lequel comprend une soupape (25) commandée par un circuit électrique connecté à l'équipement de commande de surface, de façon à déplacer la soupape entre une position ouverte dans laquelle elle permet une communication fluidique entre ledit flux et une canalisation d'injection de fluide s'étendant dans le puits de forage, et une position fermée dans laquelle elle empêche ainsi ladite communication fluidique. Le circuit électrique comprend un coupleur par induction composé d'une bobine primaire (29) placée au niveau de la colonne de production, ainsi que d'une bobine secondaire (31) placée au niveau du corps de la soupape.

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