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The Disposable E‐Log
Author(s) -
Greenhouse John P.,
Pehme Peeter E.
Publication year - 1991
Publication title -
groundwater monitoring and remediation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 47
eISSN - 1745-6592
pISSN - 1069-3629
DOI - 10.1111/j.1745-6592.1991.tb00399.x
Subject(s) - casing , wireline , aquifer , bay , plume , geology , petroleum engineering , drilling , environmental science , remote sensing , marine engineering , groundwater , hydrology (agriculture) , geotechnical engineering , engineering , mechanical engineering , oceanography , meteorology , telecommunications , physics , wireless
A device was developed to make fine‐scale in situ measurements of formation and ground water conductivity at depths up to 10 meters in unconsolidated shallow aquifers. It consists of a casing that is left in place (“disposable”) and a probe that slides down the center of the casing making readings or taking water samples through screened slots. The device is inexpensive, designed to be jetted into place, and intended for use in monitoring situations where drilling rigs and wireline logs are impractical. It offers, in principle, 10cm resolution of the conductivities and the formation factor as a function of time. Results from three of these units installed across a landfill plume near North Bay, Ontario, demonstrate the usefulness of these kinds of measurements in a monitoring study, and the problems that can be encountered in a highly contaminated environment.