SINGLE CIRCUIT DOUBLE-ACTING PUMP
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United States of America Patent
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N/A
Issued Date -
Nov 6, 2014
app pub date -
May 2, 2013
filing date -
May 2, 2013
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
Removing water from a subterranean formation entails pumping hydraulic oil from a surface-located hydraulic oil pump through a hydraulic oil line to a downhole water pump piston to drive it in a first direction to pump water through a downhole water line to a water chamber of a hydraulic accumulator at the surface. A piston separates the water chamber and an oil chamber and moves to compress the hydraulic oil in the oil chamber of the hydraulic accumulator. The hydraulic oil pump may then pump hydraulic oil into the oil chamber causing the piston to move toward the water chamber, thereby moving water in the downhole water line and resetting the piston in the downhole water pump. A water valve in the downhole water line at the surface may open and release water when the piston in the downhole water pump reaches a predetermined or reset position.
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