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Geophysics Logging Articles & Analysis
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Introduction Many critical mineral resources including lithium, uranium and potash are produced as brine groundwater resources. These critical minerals are typically found in highly saline groundwater in arid closed basins, and beneath dry lake beds. Production of brine-based mineral resources entails pumping mineral-rich brine from permeable brine aquifers and separating the minerals from water ...
Introduction Many organisms on our planet rely heavily on freshwater for survival, including humans. When key sources disappear due to drought or become undrinkable due to contamination, then drastic changes occur to the local ecosystem. Saltwater intrusion is one such cause of contamination of freshwater, which is impacting drinking water and causing agricultural lands to become unusable ...
Magnetic resonance (NMR) logging is well suited for helping manage aquifer storage and recovery (ASR) projects. An excellent example is this project in Denver Colorado, in which they used Vista Clara NMR borehole logging tools to characterize the Denver basin aquifer properties, especially hydraulic conductivity, for potential aquifer storage and recovery. ...
In a piece published by the Texas Water Resources Institute, she explained: For example, we don’t have a lot of data or geophysical logs for brackish […] In some parts of Canada, they have policies requiring the oil companies to log from the land surface down, so that you have more information in that shallow zone, where you have ...
The geophysical methods included: 2-dimensional electrical resistivity imaging survey (2-D ERI) and borehole geophysical logging. The 2-D ERI was used to identify locations for the bedrock characterization and injection boreholes. The logging tools were used to delineate the vertical extent, orientation, and aperture size of the ...
Watch in the images for MWH's creative application of stiff diagrams to characterize water drawn from the recovery wells and the strip logs to document geophysical ...
The Solution: Air rotary drilling, “one of a kind” specialized straddle packer for discrete sampling and precision injections, electric resistivity imaging survey, geophysical logging, discrete groundwater sampling and high pressure/high flow injections of Trap & Treat® BOS 200® based on a thorough Remediation Design Characterization ...
The state geologic map, available borehole geophysical logs, water well drillers logs, soil map on or near the surface (SSURGO), land use/land cover data and recent light detection and ranging (LIDAR) data are investigated and found to be useful to delineate aquifer recharge areas. ...
Corozal, Puerto Rico GeoView was tasked to conduct borehole geophysical logging of at a groundwater extraction well in the rural area of the Municipality of Corozal, Puerto Rico. ...
A detailed study was conducted in hard rock terrain for delineating water-bearing fractures using electrical conductivity (EC) logs. The EC logs of groundwater were taken both in pre- and post-monsoon seasons of the year 2001; in 25 borewells in a small granitic watershed at an interval of 1 m right from the water table (though narrow spacing wherever required) ...
For a successfull installation rock boreholes must be circular, smooth and straight for best packer seal. In addition, a caliper log of rock boreholes is recommended to more precisely locate fractures. The length and aperature of the screen, if the well is cased, should be selected carefully based on the deposits encountered. In overburden wells geophysical ...
This pilot study was the first to evaluate this technology in a high-flow karstic limestone aquifer. Extensive geophysical logging, packer testing, and discrete sampling were conducted to evaluate the fracturing and hydraulic properties of the bedrock for the injection design. ...
The approach involves initial conceptualisation of the LNAPL source term and dissolved phase plume, with further site characterisation using combined rock core and downhole geophysical fracture logging, vertical hydraulic profiling and multilevel sampling of vertical solute profiles to understand the distribution of contaminants and biodegradation processes in ...
After each borehole was completed, the diameter was tested using a down-hole dummy (74.6mm/2.94' diameter). Geophysical logging of the borehole was not done due to concern regarding the degree of competence of the shale comprising the majority of the open portion of the borehole. ...