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Title: Method and apparatus for sampling low-yield wells

Abstract

An apparatus and method for collecting a sample from a low-yield well or perched aquifer includes a pump and a controller responsive to water level sensors for filling a sample reservoir. The controller activates the pump to fill the reservoir when the water level in the well reaches a high level as indicated by the sensor. The controller deactivates the pump when the water level reaches a lower level as indicated by the sensors. The pump continuously activates and deactivates the pump until the sample reservoir is filled with a desired volume, as indicated by a reservoir sensor. At the beginning of each activation cycle, the controller optionally can select to purge an initial quantity of water prior to filling the sample reservoir. The reservoir can be substantially devoid of air and the pump is a low volumetric flow rate pump. Both the pump and the reservoir can be located either inside or outside the well.

Inventors:
 [1];  [2]
  1. (Richland, WA)
  2. (Kennewick, WA)
Issue Date:
Research Org.:
Pacific Northwest National Laboratory (PNNL), Richland, WA
Sponsoring Org.:
USDOE
OSTI Identifier:
921357
Patent Number(s):
6,547,004
Application Number:
09/809,610
Assignee:
Battelle Memorial Institute (Richland, WA) RLO
DOE Contract Number:  
AC06-76RL01830
Resource Type:
Patent
Country of Publication:
United States
Language:
English

Citation Formats

Last, George V., and Lanigan, David C. Method and apparatus for sampling low-yield wells. United States: N. p., 2003. Web.
Last, George V., & Lanigan, David C. Method and apparatus for sampling low-yield wells. United States.
Last, George V., and Lanigan, David C. Tue . "Method and apparatus for sampling low-yield wells". United States. https://www.osti.gov/servlets/purl/921357.
@article{osti_921357,
title = {Method and apparatus for sampling low-yield wells},
author = {Last, George V. and Lanigan, David C.},
abstractNote = {An apparatus and method for collecting a sample from a low-yield well or perched aquifer includes a pump and a controller responsive to water level sensors for filling a sample reservoir. The controller activates the pump to fill the reservoir when the water level in the well reaches a high level as indicated by the sensor. The controller deactivates the pump when the water level reaches a lower level as indicated by the sensors. The pump continuously activates and deactivates the pump until the sample reservoir is filled with a desired volume, as indicated by a reservoir sensor. At the beginning of each activation cycle, the controller optionally can select to purge an initial quantity of water prior to filling the sample reservoir. The reservoir can be substantially devoid of air and the pump is a low volumetric flow rate pump. Both the pump and the reservoir can be located either inside or outside the well.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2003},
month = {4}
}

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