Wells – Processes – Producing the well
Patent
1997-07-21
1999-05-25
Bagnell, David J.
Wells
Processes
Producing the well
166370, 405128, 210170, 210747, E21B 4300, E21B 4312
Patent
active
059062410
ABSTRACT:
An apparatus for extracting groundwater from a well extending below the static groundwater table includes an extraction pipe having a distal end located a predetermined distance below the static groundwater table, and a proximal end adapted for communication with a source of subatmospheric pressure. The extraction pipe includes a "bubbling hole" a short distance above a static water column established in the well to introduce air bubbles into the extraction pipe to augment the vacuum in lifting the water through the extraction pipe. A method of extracting groundwater employing this apparatus includes the steps of (1) measuring the height of the static water column in the well; (2) providing an extraction pipe having a proximal end, a distal end, and a hole located axially along the length of the extraction pipe at a specified distance from the distal end thereof; (3) extending the extraction pipe into the well so that the distal end of the extraction pipe is located at a first predetermined distance below the static groundwater table, and the hole is located a second predetermined distance above the static water column in the well; and (4) applying a subatmospheric pressure to the proximal end of the extraction pipe, the magnitude of the subatmospheric pressure being sufficient to lift the groundwater through the proximal end of the extraction pipe with the assistance of air bubbles introduced into the extraction pipe from the well through the hole.
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Miller James R.
Pehlivan Mehmet
Bagnell David J.
Lee Jong-Suk
Tait Environmental Management, Inc.
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