F - Mech Eng,Light,Heat,Weapons – 04 – B
Patent
F - Mech Eng,Light,Heat,Weapons
04
B
F04B 47/06 (2006.01) F04B 5/02 (2006.01) F04B 11/00 (2006.01) F04B 17/04 (2006.01) F04B 47/02 (2006.01) F04B 47/14 (2006.01)
Patent
CA 2693311
A positive displacement pump for pumping fluids from a downhole formation to the earth's surface is provided. The pump (100) first comprises a plunger (130). The plunger is reciprocated axially within the wellbore by a linear actuator (300), such as a submersible electrical pump, in order to form an upstroke and a downstroke. A pump inlet (140) is disposed near the bottom end of the plunger, while a pump outlet (150) is disposed near the top end of the plunger. The pump is configured such that it is able to pump a first volume of fluid upward within the wellbore during the pump's upstroke, and a second volume of fluid upward within the wellbore during the pump's downstroke. Thus, the pump is "double-acting", that is, it is able to displace fluids both on the downstroke and on the upstroke. The pump also permits the capture of a greater volume of fluids without a corresponding increase in velocity of the fluids through the pump. Furthermore, the pump is substantially hydrostatically balanced.
L'invention porte sur une pompe volumétrique (100) élévatrice de fluides des formations géologiques de fond de puits vers la surface, comportant un piston (130) allant et venant dans le puits avec une course ascendante et une course descendante sous l'effet d'un actionneur (300) linéaire, tel qu'une pompe électrique submersible. Le piston comporte une entrée de pompage (140) à sa base et une sortie de pompage (15) à son sommet. La pompe est conçue pour élever dans le puits un premier volume de fluide pendant sa course ascendante, et un deuxième volume de fluide pendant sa course descendante. C'est donc une pompe à double action, c'est-à-dire, qu'elle est en mesure de déplacer des fluides dans sa course descendante et dans sa course ascendante. La pompe permet également la capture d'un volume plus grand de fluides sans augmentation correspondante de la vitesse des fluides dans la pompe. De plus, la pompe est essentiellement équilibrée hydrostatiquement.
Marks & Clerk
Weatherford/lamb Inc.
LandOfFree
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