Method and apparatus for accumulating liquid and initiating upward movement when pumping a well with a sealed fluid displacement device
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United States of America Patent
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Feb 12, 2008
Grant Date -
Oct 12, 2006
app pub date -
Jun 5, 2006
filing date -
Jun 6, 2003
priority date (Note) -
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Abstract
Liquid is accumulated above fluid displacement device which is moveable and sealed within a production chamber defined by a production tubing, and upward movement of the fluid displacement device is initiated to pump liquid and gas from a well, by different magnitudes of differential pressure created at the well bottom. Preferably the different magnitudes of differential pressure are created by fluid passageways having different cross-sectional areas.
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