One of the most challenging ground formations for diamond drilling is fractured ground. When drilling in highly fractured or broken ground, you run the risk of hitting a void or large fracture and having your drill water escape through that fault. Similarly, in an underground drilling environment, groundwater is often unexpectedly encountered in the drill hole. Extremely high flow rates and pressures are not uncommon.
We’ve written many blogs on drilling fluid additives and how they can make a dramatic improvement in drilling performance. In diamond drilling applications, additives can lubricate your equipment, reduce rust and wear and tear on parts, all of which can result in longer life.
While many diamond drillers enjoy fishing in their spare time, no one wants to go fishing on the job. Fishing is the process of removing down-hole equipment that has become stuck, lost, or broken off in the hole. It means that operations have ground to a stop and your productivity is being affected.
Some of the things that have made Fordia successful are our customer service and our willingness to listen to customers. Our goal is make driller’s’ lives easier and that applies to every part of their work life. Our new web site was recently revamped and one of the goals was to make it a better resource for our drilling community. How did we do that, you may ask?
Many of our blog topics come from real-life situations, either from reports on onsite visits or directly from our customers. They represent the types of issues that many of our customers are facing so we use these opportunities to explore possible solutions or explanations. This blog is about industry standards within the diamond drilling world.
Most of our blogs focus on diamond drilling, but occasionally we will delve into topics related to geotechnical or other types of drilling. In this blog, we are going to look at reverse circulation drilling, known as RC drilling.
Bore hole deviation is one of those things that occur despite all the preventative measures and precautions that diamond drillers may take. Deviations may occur due to equipment that is lost and stuck in the bore hole or it may be intentional because the geologist has requested a new trajectory. A deflection wedge is one of the oldest and simplest ways to steer the bore hole. There are other choices for directional drilling and you can read about them in this blog.
Our technical team in Northern Ontario had an interesting request a while ago during an onsite visit. The mining company they were visiting was a longtime customer with multiple mines. The mine was one of the largest in the world and a large player in the area. With a lot business already done, and an excellent relationship developed over 25 years, the customer would often consult with us when it came to anything to do with coring challenges. During this particular visit, they asked if we could come up with a procedure and the necessary tooling to be able to get core using unconventional drill rigs such as a jumbo drill or a bolter.
It has been a while since we did a blog on matrix troubleshooting where we examine the different wear patterns on a bit crown. By looking at the wear profile, you can get clues as to why your core bit may be underperforming. There are many variables that can cause a really good core bit to underperform. It can be a change in ground conditions, drilling parameter or simply a lack of experience.