Borehole Imaging – Optical Scanner – Overview. Application: The optical scanner is a high resolution CMOS camera borehole imaging probe which is commonly run in combination with an acoustic scanner for detailed, high resolution images of the borehole through 360°. Ideal and commonly used for structural studies and geotechnical investigations but has applications in […]
Dual Laterolog (Focused Resistivity) Logging – Overview
Dual Laterolog (Focused Resistivity) Logging Overview. Application: Resistivity logging involves the measurement of electrical properties of the rock. Changes in the rock’s electrical properties can be due to the clay mineral content, water content and porosity, temperature and water conductivity. Method: Resistivity logging probes involves the injection of electrical current through a current electrode […]
Dual Induction-Conductivity Logging – Environmental Contamination
Dual Induction-Conductivity Logging – Environmental Contamination Project: Rehabilitation of old industrial land is common place today for future land re-use. Shallow drilling and geophysical borehole logging is common practise to map the location of subsurface contaminants from the old industrial sites. This project in an urban setting involved the logging of 40 shallow boreholes. Aim: […]
Dual Induction-Conductivity Logging – Overview
Dual Induction-Conductivity Logging – Overview Application: Induction-conductivity logging involves the measurement of induced electromagnetic fields in the rock and resulting eddy currents. Changes in the rock’s electrical properties can be due to the clay mineral content, water content and porosity, temperature and water conductivity. Induction-conductivity logging can be performed in an air and/or water […]
Geological Applications – Measuring Dry Density in Boreholes for Hard Rock Gold & Copper Mining.
Geological Applications: Measuring Dry Density in Boreholes for Hard Rock Gold & Copper Mining Geophysical borehole density logging in the hard rock mining sector, gold, copper, is becoming increasingly important in mine planning and ore body knowledge. Geological resources are commonly modelled as volumes which need to be converted to mass using density values. Poor […]
Geological Applications: Environmental Contamination
Geological Applications: Environmental Contamination “Knowledge of your target’s physical properties will aid in the selection of the most applicable geophysical logging method for your drill program.” Environmental contamination investigation and monitoring projects are commonplace today as older industrial sites change their land use. It is important for the regualtors and new landowners to know if […]
Geological Applications: Inter-Borehole Correlation of Target Properties.
Geological Applications: Inter-Borehole Correlation of Target Properties Knowledge of your target’s physical properties will aid in the selection of the most applicable geophysical logging method for your drill program. As the project geologist, your desk studies on the most favourable drill targets have been completed, now you have to drill to increase the value of […]
Logging Operations: Logging System Compatibility
LOGGING SYSTEM COMPATIBILITY OVERVIEW: There are a number of mineral logging system and probe manufacturers worldwide. All manufacturers offer most main stream logging probes and have strengths in different areas. The issues for the logging contractors is compatibility between logging systems which can impact data quality and comparison between systems and further impact upon operational […]
Logging Operations: Logging Probe Stacks
LOGGING PROBE STACKS OVERVIEW: Cost pressures on the mining industry means contractors are always under pressure to come up with innovative solutions to reduce costs. Geophysical logging is a valued service for mining producing accurate and cost effective data for ore body knowledge and mining solutions. Still the multiple logging runs required for a complete […]
Logging Operations: Logging Unit Design
LOGGING UNIT DESIGN OVERVIEW: In the slimhole logging market, there are a wide range of vehicle based logging unit designs aiming to provide an efficient, safe and cost effective service. The design needs to cover a number of factors which can occur during everyday operations and hamper the efficient operations. LOGGING UNIT DESIGN VEHICLE: Due […]
