Pumping from two levels of a pool of production fluid, and one way valve therefore
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United States of America Patent
Stats
-
Jan 1, 2008
Grant Date -
Oct 27, 2005
app pub date -
Mar 17, 2005
filing date -
Mar 18, 2004
priority date (Note) -
Expired
status (Latency Note)
Importance
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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Cited Art Landscape
Patent Citation Ranking
- 1 Citation Count
- E21B Class
- 1.55 % this patent is cited more than
- 17 Age
