Vented packer for sampling well
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United States of America Patent
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-
Nov 9, 1993
Grant Date -
N/A
app pub date -
Sep 17, 1992
filing date -
Sep 17, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
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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