Bits ‘n Pieces – The Driller’s Blog

Rod McCoremick

Rod is a drilling guru with umpteen years of experience in both mineral exploration and geotechnical drilling. He has worked on almost every continent and when he is not sharing his know-how by blog, you can find him hanging out with the R&D gang or the tech crew.

Recent Posts

8 Tips to Grilling the Perfect Hamburger

Posted by Rod McCoremick on May 22, 2017 10:00:00 AM

With the warm weather approaching, it will soon be the time to fire up the BBQ and start cooking outdoors. There’s nothing like manning the fire with a beer in on hand and a spatula in the other, cooking a beloved favourite like hamburgers. There is also something about roasting raw meat over a flame, with the scent wafting up your nose that just can’t be beat.

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Topics: Beyond drilling - other topics of interest

Matrix Troubleshooting: Burnt Core Bits

Posted by Rod McCoremick on May 15, 2017 10:00:00 AM

It’s been a while since we’ve done a blog on matrix troubleshooting. Core bits play an integral role in getting great drilling performance and many things can cause a bit to underperform. One of the best ways to determine what is off is to examine the wear profile of your bit crown and change drilling parameters if necessary. Today, we’ll look at burnt core bits, some of the causes and some of the solutions.

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Topics: Tips on common drilling issues, Basic drilling information

Diamond  Drilling in Ground with Clay or Shale

Posted by Rod McCoremick on May 8, 2017 1:51:37 PM

I’m often going on about how choosing the equipment for the type of ground you will be drilling in is the first step to success and good drilling performance. Choosing the right drilling fluid additive to match the ground you will be drilling in beforehand, will make a world of difference. This is certainly the case in ground with clay or shale. Swelling clay can have disastrous results on your drilling operation.

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Topics: Drilling mud, fluids and additives, Basic drilling information

A Primer on Recovery Tools in Diamond Drilling

Posted by Rod McCoremick on May 1, 2017 10:30:00 AM

Losing equipment in a bore hole and having to go retrieve it is called fishing and no diamond driller wants go fishing. The equipment has become stuck, lost, or broken off but either way it is obstructing the bore hole.

 

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Topics: Tips on common drilling issues, Basic drilling information

4  Simple Tools You Need to Become a Drilling Mud Mixing Pro

Posted by Rod McCoremick on Apr 24, 2017 10:30:00 AM


Many earlier blogs have been written on drilling fluid additives and how they can bring great benefits to a drilling operation. Benefits like longer life for your core bits, less torque, reduced rust, less wear and tear, better core recovery, improved drilling performance and more. But before you can reap all these benefits, you need to know how to mix them properly. There are four simple tools that you should have in your toolbox that will help ensure the best drilling mud.

 

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Topics: Drilling mud, fluids and additives

NEXT Top 10 Non-Drilling Related Skills for Diamond Drillers

Posted by Rod McCoremick on Apr 17, 2017 10:00:00 AM

A few weeks ago we published list of the top 10 skills diamond drillers should have mastered - skills that were not drilling related. The list we had come up with was too long to publish in one blog, so we published the first 10.  Here now is the follow up to that blog – the next top 10 skills that you may want to master in order to be a competent man in today’s world. 

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Topics: Beyond drilling - other topics of interest

What Kind of Diamond Driller Are You?

Posted by Rod McCoremick on Apr 10, 2017 10:30:00 AM

INTRODUCTION:

As you spend more and more time on a drill site, you start to recognize certain similar behaviours in fellow drillers. You can start to see types of drillers that are different from each other. I was asked the other day, what type of driller am I, and that got me thinking about how to describe the different types of drillers that I spend time with and have been. Here’s what I came up with.


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Topics: Basic drilling information

Drill Site Security: Changing of the Seasons

Posted by Rod McCoremick on Apr 4, 2017 11:00:00 AM

Regardless of what part of the world you are in, when the seasons change, you need to make sure safety considerations also change. In North America, spring is around the corner, and in the southern hemisphere, autumn is coming. Regardless of the temperature, let’s review some basic security guidelines.

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Topics: Drill Site Security

How to Choose the Size of Your Reaming Shell

Posted by Rod McCoremick on Mar 27, 2017 11:00:00 AM

I have noticed that there are a lot of drillers who use the 6 inch reaming shell pretty exclusively, so in this blog I wanted to talk about the other sizes available and how to know when you should use another size. Reaming shells are used to maintain the diameter of the bore hole and to make sure other drilling equipment does not get stuck down the hole. The outside surface of the reaming shell has natural and synthetic diamonds embedded in a resistant matrix.

Reaming shells come in 6, 10 and 18 inches. How do you know when do you use each size?

 

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Topics: How to choose equipment

Core Matrix Troubleshooting: Polished Core Bits

Posted by Rod McCoremick on Mar 20, 2017 2:23:55 PM

Many of our previous blogs are about the importance of choosing the right core bit and the right core bit configuration. Recently I started discussing some of the reasons that core bits underperform, even if you have chosen the right ones. Some of the reasons involve changes in ground conditions or not using the best drilling parameters for the drilling project. One of the best ways to determine what is off is to examine the wear profile of your bit crown and change drilling parameters if necessary. An earlier blog looked at the problem of over exposed diamonds and this time we will look at core bits that are polished.

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Topics: Tips on common drilling issues, Basic drilling information

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