Downhole pump drive system

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

Patent

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Details

F04B 47/06 (2006.01) F01L 25/06 (2006.01) F04B 9/125 (2006.01) F04B 47/08 (2006.01)

Patent

CA 2137095

A downhole pump comprises a pump cylinder driven by a pneumatic cylinder. A compressor compresses air and delivers compressed air to the pneumatic cylinder under the control of first and second trip valves and a pilot valve. The trip valves control the pilot valve so that it alternately delivers the compressed air above and below the pneumatic cylinder piston to reciprocally drive the piston. The pneumatic cylinder piston connects to the pump cylinder via a pair of push rods to drive the pump cylinder piston to pump water from the well to an above-ground reservoir.

Pompe de fond comprenant un corps de pompe entraîné par un vérin pneumatique. Un compresseur comprime l'air et achemine cet air comprimé vers le vérin pneumatique sous la commande des première et deuxième soupapes de sûreté et d'une soupape pilotée. Les soupapes de sûreté commandent la soupape pilotée pour qu'elle achemine, en alternance, l'air comprimé au-dessus et au-dessous du piston du vérin pneumatique afin de l'entraîner selon un mouvement alternatif. Le piston du vérin pneumatique est relié au corps de pompe par deux tiges-poussoirs afin d'entraîner le piston du corps de pompe pour qu'il pompe l'eau à partir du puits jusqu'à un réservoir à la surface.

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