Downhole ram pump

F - Mech Eng,Light,Heat,Weapons – 04 – B

Patent

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Details

F04B 17/00 (2006.01)

Patent

CA 2610365

A downhole ram pump. A downhole pump system includes a flow restricting device which variably restricts fluid flow through an opening, the restricting device vibrating in response to the fluid flow, thereby alternately increasing and decreasing the fluid flow through the opening; and a pump device which generates a pressure differential in response to vibration of the restricting device. Another downhole pump system includes a flow restricting device which vibrates in response to fluid flow through an opening, thereby alternately increasing and decreasing the fluid flow through the opening, a pressure differential across the restricting device variably biasing the restricting device to increasingly restrict the fluid flow through the opening, and the pressure differential alternately increasing and decreasing in response to respective alternate increasing and decreasing flow through the opening; and a pump device which generates differential pressure in response to vibration of the restricting device.

La présente invention porte sur une pompe de fond de trou à piston plongeur. Un système de pompe de fond de trou à piston plongeur comprend un dispositif de limitation du flux qui réduit de manière variable l'écoulement du fluide traversant une ouverture, le dispositif limitateur vibrant en réponse à l'écoulement du fluide, ce qui fait ainsi alternativement augmenter et diminuer l'écoulement du fluide traversant l'ouverture; et un dispositif de pompe qui génère une différence de pression en réponse à la vibration du dispositif limitateur. Un autre système de pompe de fond de trou à piston plongeur comprend un dispositif limitateur de flux qui vibre en réponse à l'écoulement du fluide à travers une ouverture, ce qui provoque alternativement l'augmentation et la diminution du débit de fluide traversant l'ouverture, une différence de pression au niveau du dispositif limitateur sollicitant de manière variable le dispositif limitateur afin qu'il limite de manière croissante l'écoulement de fluide traversant l'ouverture et la différence de pression augmentant et diminuant alternativement en réponse au débit alterné croissant ou diminuant traversant l'ouverture; et un dispositif de pompe qui génère une différence de pression en réponse à la vibration du dispositif limitateur.

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