Bellows valve

E - Fixed Constructions – 21 – B

Patent

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Details

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

Patent

CA 2742884

The present invention relates to a device which can be used in an offshore or onshore oil and/or gas well for the purpose of increasing the production of the well. The device comprises an outer structure in which a first and a second pressure-actuated bellows device are arranged, the first and second pressure- actuated bellows device, via a support means, being in fluid communication with each other. The support means is fixedly mounted internally in the outer structure, the support means thereby delimiting an open and a closed space for respectively the first and the second pressure-actuated bellows device, wherein the closed space is filled with a fluid under pressure, whilst the open space is in fluid communication with a surrounding fluid.

L'invention concerne un dispositif qui peut être utilisé dans un puits de pétrole et/ou de gaz en mer ou à terre pour augmenter la production du puits. Le dispositif comprend une structure extérieure dans laquelle sont montés des premier et deuxième dispositifs de soufflet commandés par la pression. Les premier et deuxième dispositifs de soufflet commandés par la pression, par le biais d'un moyen de support, sont en communication fluidique l'un avec l'autre. Le moyen de support est monté fixement à l'intérieur de la structure extérieure, et le moyen de support délimite ainsi un espace ouvert et un espace fermé, respectivement pour le premier et le deuxième dispositif de soufflet commandé par la pression. L'espace fermé est rempli d'un fluide sous pression, tandis que l'espace ouvert est en communication fluidique avec un fluide environnant.

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