Improving Penetrations Rates
IMPROVE PRODUCTIVITY
First and foremost, you need to pick the right core bit for the type of ground you will be drilling. You should refer to a matrix selection chart to help narrow down your choices.
Once you have an idea of the matrix you need, you will also need to consider the type of waterway configuration. You will need to look at the pattern, the number of waterways as well as the width between the waterways as all of these play a role.
For example, when drilling in broken ground that is not very hard (3-5 on the Moh scale), you could choose a Hero 3 with a cyclone configuration. Other options could include core bits that are self-sharpening, such as the Hero 11 Abrasive. This kind of core bit has a matrix that has been developed to provide excellent penetration rates.
A core bit with a higher crown impregnated with diamonds, such as the Vulcan, may also help improve penetration rates by reducing the number of times you need to change your bit. However, care must be taken to choose a Vulcan with a matrix that is suitable for the type of ground you will be drilling. As a Vulcan typically lasts up to 33% longer than a normal core bit, it should be used in ground that is not variable.
