borehole design Articles
-
Subsurface Gas Monitoring
So, what can be done to mitigate the potential drastic effects? Whether a landowner, developer or regulator the objective is identical; namely to ensure that any existing or proposed development remains or takes place safely. But because of the temporal or seasonal effects on ground gas migration, monitoring has to be undertaken over a potentially wide geographic area, lasting several ...
-
Karowe Mine Groundwater Flow Model and Predictive Dewatering Simulations - Case Study
Project Description Karowe Mine, located approximately 16 kilometers (km) southwest of the town of Letlhakane, is a diamond mine where the second largest diamond ever found on record, with a weight of 1,111 carats, was discovered. This project involved simulating mine dewatering and excavation to evaluate future dewatering requirements, as well as providing guidance for future monitoring borehole ...
-
Geodrilling International - Installation of Closed-loop Borehole Probes
The installation of closed-loop borehole probes is a challenge on almost any project. With many domestic clients requiring a large meterage of borehole to be installed in a small site, Nicholls Boreholes has found that the traditional manual installation of closed-loop borehole probes is no longer a safe or acceptable option. The company has developed the Loop Feeder, a hydraulically-driven, ...
-
Borehole Video Systems – Making A Difference…
This article was originally published in the May 2009 issue of Geodriling International. Mike Deed, Managing Director of Geoquip Water Solutions Ltd, considers how the Laval R-Cam 1000 portable downhole video camera could revolutionise the borehole inspection industry. THE ability to see into a deep borehole has been an aspiration for well drillers, well owners, and geologists for hundreds of ...
-
Using the Pencil-Paper Method with a Tablet Computer to Increase Borehole / Well Logging Efficiency
Traditionally, geologists use pencil and paper when logging soil descriptions, drilling tests, and well diagrams in the field. We wanted to see if we could speed up this process using a field computer. We tested a fully ruggedized Yuma2 tablet computer (retail value of $3500) and a consumer grade Dell Venue 8 (retail value $250). Both computers run a full version of Windows 7 or 8. So, we ...
-
Inspection Cameras for the Mining, Geological and Well Industry
When it comes to Borehole inspection requirements we can think of various industries and environments that these activities are engaged in. Underground deep drilling inspection camera for Geological Survey are becoming more frequent. Of course, when it comes to well inspections, we may immediately think of water well borehole inspections that are performed primarily in residential areas. The ...
-
Village Drill: The Design
Driven by a desire to fight water poverty in the developing world, the Village Drill was custom-built to reach the 75% of communities that regular drilling rigs cannot access. After seeing a gap in the market, John Renouard commissioned BYU engineers to design and test an affordable, human-powered Drill. Despite no experience with drilling, BYU took up the challenge in 2010 and began to design ...
-
Multilevel Groundwater Assessment of Confining Unit in a Bedrock Sequence near Sarnia, Ontario
Untitled Document INTRODUCTION Two sites in southern Ontario were studied through instrumentation of boreholes with Waterloo Multilevel Monitoring Systems. These sites are located approximately 7 km (4.3 miles) apart and lie between Sarnia to the northwest, and Petrolia to the east in lambton County, Ontario, Canada (figure 1). Multilevel monitoring devices were installed to ...
Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you