F - Mech Eng,Light,Heat,Weapons – 04 – C
Patent
F - Mech Eng,Light,Heat,Weapons
04
C
F04C 15/00 (2006.01) F04C 2/107 (2006.01) E21B 43/12 (2006.01)
Patent
CA 2662055
A system comprises a progressive cavity pump including a helical rotor disposed within a mating stator. In addition, the system comprises a rod string having a longitudinal axis, a first end, and a second end coupled to the rotor. Further, the system comprises a rotation retarding device coupled to the first end of the rod string, wherein the rotation retarding device retards the rotation of the rod string relative to the stator. Still further, the system comprises a lifting device coupled to the rotation retarding device, wherein the lifting device is operable to apply an axial lifting force to the rotor.
L'invention concerne un système comprenant une pompe à cavité progressive, comprenant un rotor hélicoïdal disposé dans un stator d'appariement. En outre, le système comprend un train de tiges ayant un axe longitudinal, une première extrémité, et une seconde extrémité couplée au rotor. De plus, le système comprend un dispositif de retard de rotation couplé à la première extrémité du train de tiges, le dispositif de retard de rotation retardant la rotation du train de tiges par rapport au stator. Finalement, le système comprend un dispositif de levage couplé à un dispositif de retard de rotation, le dispositif de levage étant opérationnel pour appliquer une force de levage axiale sur le rotor.
Deeth Williams Wall Llp
National Oilwell Varco L.p.
LandOfFree
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