Autochoke system

E - Fixed Constructions – 21 – B

Patent

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Details

E21B 21/08 (2006.01) E21B 47/06 (2006.01) F16K 31/12 (2006.01)

Patent

CA 2749580

Back pressure control devices used to control fluid pressure in a wellbore require various utilities for operation, such as an air supply. Apparatus disclosed herein provide for the continued operation of one or more back pressure control devices when supply of utilities for operation of the back pressure control devices are intentionally or unintentionally interrupted.

Les dispositifs de réglage de la contre-pression utilisés pour régler la pression hydraulique dans un puits de forage nécessitent divers équipements pour le fonctionnement, tels qu'une alimentation en air. L'appareil de la présente invention permet le fonctionnement en continu d'un ou plusieurs dispositifs de réglage de la contre-pression lorsque la fourniture d'équipements destinés au fonctionnement des dispositifs de réglage de la contre-pression est interrompue de manière intentionnelle ou non.

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