Pumping from two levels of a pool of production fluid, and...

Details Pumping from two levels of a pool of production fluid, and... Pumping from two levels of a pool of production fluid, and...

2008-01-01

2008-01-01

Gay, Jennifer H (Department: 3672)

Wells

With eduction pump or plunger

Receptacles

C166S108000, C166S369000, C417S404000, C417S418000, C417S904000

Reexamination Certificate

active

07314081

ABSTRACT:
A method of pumping upper production fluid from an upper level of an underground pool of production fluid and pumping lower production fluid having a higher concentration of sand from a lower level during a single pump cycle comprises providing a dual action reciprocating piston pump comprising a pump barrel and a reciprocating piston dividing the pump barrel into a lower and upper chambers. On a downstroke upper production fluid is drawn from the upper level into the upper chamber through an upper intake, and lower production fluid present in the lower chamber is forced up a tube toward ground surface. On an upstroke lower production fluid is drawn from the lower level into the lower chamber through a lower intake, and upper production fluid in the upper chamber is forced up the tube toward ground surface.

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