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 need for integrity and compliance testing of local water wells has been highlighted in a recent groundwater forums to halt the loss of a valuable resource whether through age of the well or poor installation procedures. <h4>What is the problem?</h4>...
<h4>Soil Moisture and Contaminant Plumes</h4> An interesting presentation at a recent groundwater forum emphasised the importance of soil moisture in the distribution of contaminant vapour plumes particularly TCE. <h4>Relevance to Adelaide...
<h4>Caliper logging</h4> The caliper probe, a simple mechanical device, whose main functionality is to measure the internal diameter of a borehole or casing string within a borehole. Another purpose of a caliper arm is to push a section of a probe against...
Gamma logging for uranium exploration and mining is an established technique for producing a rapid and cost effective depth based profile in a borehole of uranium ore grade. The most common measurement systems involve a scintillation system where gamma photons are...
Probe calibration, normalisation and verification – what is the difference? Calibrated data, this is often stipulated by a client in a contract but the calibration is commonly misunderstood. Calibration A definition of calibration is: A set of operations which...
A geophysical logging contractor is a small part of an exploration or mining development team. The team would likely include a drilling contractor(s), rig geologists, staff geologists, fieldies, logistics, and camp logistics. But if you are drilling deep boreholes or...
I attended a presentation by DET CRC at the Australian Society of Exploration Geophysicists concerning the principles of the project and a current status. The talk outlined the guiding principles of the program: The need to drill more boreholes in areas covered by...
The Australian Society of Exploration Geophysicists event was held at the Perth Convention Centre on the Saturday before the main conference. There were over 40 attendees who were treated to a range of presentations from major geophysical logging contractors in WA...
The fullwave sonic probe measures sonic waves (via pressure pulses) between a transmitter and a series of receivers – all at fixed distances in the probe. Velocity or transit time of the sound wave is a very useful parameter for engineering parameters such as rock...