Wells – With below and above ground modification – Eduction pump or plunger in well
Patent
1992-09-17
1993-11-09
Bui, Thuy M.
Wells
With below and above ground modification
Eduction pump or plunger in well
166106, E21B 3400
Patent
active
052594505
ABSTRACT:
There is provided an apparatus for obtaining liquid samples from a well which incorporates a vented packer. The packer reduces the amount of groundwater which must be pumped by the pump of the apparatus in order to purge the well by isolating the input of the pump to a reduced volume of groundwater. The region below the packer, which is the region in communication with the pump, is vented to the atmosphere in order to permit the pump to operate at its maximum pumping rate regardless of the recovery rate of the well. The venting of the packer eliminates the condition where the pump is trying to pull a vacuum due to a low recovery rate of the well.
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patent: 4632184 (1986-12-01), Renfroe, Jr. et al.
patent: 4727936 (1988-03-01), Mioduszewski et al.
patent: 5190108 (1993-03-01), Mansuy
Bui Thuy M.
QED Environmental Systems, Inc.
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