Underground fluid recovery device

Details Underground fluid recovery device Underground fluid recovery device

1993-04-29

1994-12-20

Buiz, Michael Powell

Wells

Automatic

166250, E21B 4300

Patent

active

053738977

ABSTRACT:
A pneumatic underground fluid recovery pump is disclosed that includes a power actuated inlet valve and a power source, independent of the static fluid pressure head in the well, for actuating the power actuated inlet valve between open and closed positions. Also disclosed is a pneumatic underground fluid recovery pump that includes a fluid level sensor for sensing fluid level in the pump reservoir above a first predetermined level and a controller for controlling the pressurization of the pump in response to the fluid level sensor sensing fluid level above the first predetermined level. Also disclosed is a pneumatic underground fluid recovery pump that includes a fluid level tracking device for sensing underground fluid level in the well and adjusting the level of the pump inlet valve a predetermined distance below the underground fluid level in the well.

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