F - Mech Eng,Light,Heat,Weapons – 04 – B
Patent
F - Mech Eng,Light,Heat,Weapons
04
B
F04B 47/00 (2006.01) E21B 23/02 (2006.01) E21B 43/12 (2006.01) F04B 47/02 (2006.01) F04C 13/00 (2006.01)
Patent
CA 2441660
A downhole pump system allows fluid to be pumped from a well to the surface through a production tubing string, while also allowing the downhole pump 10 to be retrieved to the surface while the production tubing string remains in the well. The downhole pump may include a hold down housing 12, a mandrel 14, a drive coupling 18, and a lifting nut 20. The pump is driven by a drive rod, which conventionally extends from the surface to the downhole pump. Axial movement of pump components may be prevented by a spring lock mechanism 24, while torque transmitting surfaces 26 prevent rotation of the pump housing 12 with respect to a landing nipple 25.
Guidry Michael J. Jr.
Murray William D.
Finlayson & Singlehurst
Robbins & Myers Energy Systems L.p.
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