Groundwater and environmental: borehole logging
Geophysical logging of boreholes prior to the installation of piezometers permits a cost effective means of evaluating hydrogeological conditions, and aids in the optimum design of piezometers and groundwater monitoring boreholes. Fluid logging of monitoring boreholes aids in the selection of sampling depths and is a means of monitoring water quality and movement.
Checks of the completed piezometer and borehole construction can also be made using geophysical logging techniques and downhole video cameras to ensure correct installation of screen, linings, gravel pack, and bentonite or grout seals.
Monitoring of groundwater around a landfill site using fluid logs
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- Identification of flow zones
- Groundwater quality monitoring
- Identification of aquifers
- Location of coal bands and worked ground
- Location of fractures and fissures