Gas-lock re-prime device for submersible pumps

Details Gas-lock re-prime device for submersible pumps Gas-lock re-prime device for submersible pumps

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F04D 9/00 (2006.01) E21B 34/08 (2006.01) E21B 43/12 (2006.01) F04D 13/00 (2006.01)

Patent

CA 2425449

A submersible pump assembly has a pump and a valve connected to the outlet of the pump. An outlet of the valve is connected to a riser. A valve member in the valve housing is vertically movable between a pumping position and a priming position, the valve member being biased toward the priming position. A priming conduit connects the outlet of the valve housing to the inlet of the pump for directing well fluids flowing through the conduit into an intake of the pump for re-priming the pump. When the pump is pumping well fluid, the valve member is moved to the pumping position by the fluid pressure, well fluids flowing from the inlet of the valve housing to the outlet of the valve housing but not through the priming conduit. When pumping ceases, the valve member returns to the priming position, well fluids flowing through the priming conduit for re-priming the pump.

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