Rod pull down tool

Details Rod pull down tool Rod pull down tool

E - Fixed Constructions

21

B

E21B 43/16 (2006.01) E21B 43/12 (2006.01) F04B 47/02 (2006.01)

Patent

CA 2114900

In a well using a lift pump operated by a tension string from the surface, the down stroke of the pump is accelerated by providing a plunger element secured to the pump operating string. The plunger has an upper end exposed to the high hydrostatic pressure in the tubing string above the pump, and a lower end exposed to the substantially lower hydrostatic pressure in the well outside the tubing string. This produces a net downwards force on the pump operating string allowing a higher pump speed and a higher volume delivery.

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