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Borehole Survey Articles & Analysis
12 articles found
Ice shows no detectable low-field NMR response, so any water measured by surface-based GMR surveys or borehole Dart/Javelin surveys can be confidently associated with unfrozen groundwater and reliably quantified. ...
It allows the SuperSting Wi-Fi to automatically control and switch passive electrodes connected by a passive multi-electrode cable for automatic data acquisition in 2D, 3D, and 4D surveys. The rugged and sealed design makes it ideal for harsh environments like sub-surface, marine and borehole measurements, and long-term monitoring systems. ...
www.kasthewdrilling.co.ug We are Kasthew Borehole / Water Drilling Company Ltd (Uganda). We offer bore-hole drilling services under our company (Kasthew Drilling Co. ...
Potable water in the Zululand coastal plain, Sodwana, South Africa can be enhanced by: (i) providing detailed information on the aquifer system using geophysics; (ii) providing information on groundwater quality and its efficient use; (iii) providing low-cost/low technology local drillers with light-weight, manoeuvrable rigs with trained teams for drilling of 6-inch diameter ...
Landfill technicians and environmental consultants can now find and prove borehole locations with a GPS-enhanced portable gas analyser from Geotech. ...
One of the advantage of passive cables is its ability to borehole and marine surveys, operator can put passive cables in water. ...
For borehole survey, the effective survey distance works the same way the surface survey does. ...
FlashRES resistivity system is very flexible in terms of application, it can perform: Surface surveys Surface borehole surveys Crosshole and multiple-holes surveys Surface-points surveys High efficient Mise a la Masse surveys 3D survey Time lapse surveys ...
We had recently carried out a copper prospecting survey. Electrodes were placed on the surface at 5m interval, one cable was connected to electrodes on surface and another cable is put in to the borehole. After repeating the surveys at nearby borehole, we generated two resistivity distribution images. ...
Surface borehole method can be used to effectively maximise the value of existing boreholes. This is because surface-boreholre method can give operator more geological and geophysical information around the borehole. For example, we did a surface-borehole survey, where there was already well-known ...
Surface-points electrical resistivity surveys area can be used to detect one or several known underground anomalies in timely manner. A minimum of one borehole is needed to carry out Surface-points electrical resistivity surveys. A FlashRES electrical resistivity meter allows users to position active electrodes anywhere they want in the ...
Case 1 A surface-borehole resistivity survey completed for bridge construction As shown infigure 1, this surface-borehole survey was configured to accurately locate known caves for structural reasons. ...