Method for flow control and autonomous valve or flow control...

E - Fixed Constructions – 21 – B

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E21B 34/08 (2006.01) E21B 43/12 (2006.01)

Patent

CA 2657209

A method for flow control and a self-adjusting valve or flow control device, in particular useful in a production pipe for producing oil and/or gas from a well in an oil and/or gas reservoir, which production pipe includes a lower drainage pipe preferably being divided into at least two sections each including one or more inflow control devices which communicates the geological production formation with the flow space of the drainage pipe. The fluid flows through an inlet (10) and further through a flow path of the control device (2) passing by a movable disc (9) or movable device which is designed to move relative to the opening of the inlet and thereby reduce or increase the flow-through area (A2) by exploiting the Bernoulli effect and stagnation pressure created over the disc (9), whereby the control device, depending on the composition of the fluid and its properties, automatically adjusts the flow of the fluid based on a pre-estimated flow design.

Procédé de régulation de flux et soupape auto-régleuse ou dispositif de régulation de flux, convenant en particulier pour une conduite de transfert de pétrole et/ou de gaz d'un puits à un réservoir de pétrole et/ou de gaz. La conduite de production comprend un tuyau de drainage inférieur divisé de préférence en deux sections comprenant chacune un ou dispositifs de commande de flux d'entrée et faisant communiquer le site de production géologique avec l'espace d'écoulement du tuyau de drainage. Le fluide traverse une admission (10), puis s'écoule vers le dispositif de régulation (2) en passant par un disque mobile (9) ou un dispositif mobile conçu pour se déplacer par rapport à l'ouverture de l'entrée et, partant, pour réduire ou accroître la surface de traversée (A2) selon l'effet de Bernoulli et en fonction de la pression de stagnation créée sur le disque (9). Selon la composition du fluide et ses propriétés, le dispositif de régulation ajuste automatiquement l'écoulement du fluide selon un schéma d'écoulement pré-estimé.

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