Pressure monitoring of control lines for tool position feedback

E - Fixed Constructions – 21 – B

Patent

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Details

E21B 47/09 (2006.01) E21B 34/10 (2006.01)

Patent

CA 2569059

A flow control device for use in a wellbore to allow flow of formation fluid into the wellbore comprises a valve member adapted to move when disposed in the wellbore. A fluid line supplies a working fluid under pressure to move the valve member to allow the fluid to flow into the wellbore. A sensor in the wellbore, and associated with the fluid line, provides an indication of a position of the valve member. A method of determining a state of a flow control tool within a wellbore comprises supplying fluid under pressure to the flow control tool to move a flow control member of the tool into the state. Pressure of the supplied fluid is detected downhole. The state of the flow control device is determined from the detected pressure of the supplied fluid.

L'invention concerne un dispositif de commande d'écoulement utilisé dans un puits de forage permettant l'écoulement d'un fluide de formation à l'intérieur de ce puits et comprenant un élément de soupape conçu pour se déplacer lorsqu'on le dispose dans ledit puits. Une ligne fluidique fournit un fluide de travail sous pression afin de déplacer l'élément de soupape et de permettre l'écoulement du fluide dans le puits. Un capteur disposé dans le puits et associé à la ligne de travail fournit une indication sur la position de l'élément de soupape. Un procédé permettant de déterminer l'état d'un outil de commande d'écoulement à l'intérieur du puits consiste à fournir un fluide sous pression à l'outil de commande d'écoulement afin d'amener l'élément de commande d'écoulement de l'outil à l'état déterminé. La pression du fluide fourni est détectée en fonds de puits. L'état du dispositif de commande d'écoulement est déterminé à partir de la pression détectée du fluide fourni.

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