Method for accelerating production

E - Fixed Constructions – 21 – B

Patent

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Details

E21B 43/00 (2006.01) E21B 23/01 (2006.01) E21B 23/02 (2006.01) E21B 33/12 (2006.01) E21B 34/14 (2006.01) E21B 43/12 (2006.01)

Patent

CA 2271459

A novel venturi device (56) located within a tubular member (8) for accelerating the flow of an effluent is disclosed. The device will generally comprise a tubular member containing a throat section (176), a diffuser section (178) and an opening contained on the tubular member for allowing the injection of gas therethrough. The device also includes an inner mandrel contained within the tubular member. The inner mandrel contains a nozzle member (154) defining an internal chamber. The inner mandrel also contains a first passageway and a second passageway for directing the effluent therethrough. The nozzle (154) is operatively associated with the opening contained on the tubular member. In one embodiment, a flow diverter member is included for diverting the production effluent into the first passageway and into the nozzle annulus. A method of accelerating production with a venturi device within a tubing string is also disclosed.

L'invention concerne un nouveau dispositif (56) à venturi, situé à l'intérieur d'un élément (8) tubulaire, et conçu pour accélérer l'écoulement d'un effluent. Ce dispositif comprend généralement un élément tubulaire contenant un manchon (176), un diffuseur (178), et un orifice situé sur ledit élément tubulaire pour permettre l'injection de gaz dans cet élément. Ce dispositif comporte également un mandrin placé à l'intérieur dudit élément tubulaire. Ce mandrin intérieur comprend une buse (154) qui définit une chambre interne. Il comprend également des premier et second passages qui dirigent l'effluent à travers ledit mandrin. La buse (154) est associée de manière fonctionnelle à l'orifice situé sur l'élément tubulaire. Dans un mode de réalisation, un élément déflecteur d'écoulement permet de dévier l'effluent produit vers le premier passage et de le faire passer par l'annulaire de la buse. L'invention concerne également un procédé de production accélérée comprenant un dispositif à venturi situé à l'intérieur d'une colonne de production.

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