Reverse Circulation drilling, or RC drilling, is a method of drilling which uses dual wall drill rods that consist of an outer drill rod with an inner tube. These hollow inner tubes allow the drill cuttings to be transported back to the surface in a continuous, steady flow.
Sollroc SRC3.5Y Hammer overview
Overall Length (less bit)
Weight (less bit)
Fit bit shank
Top sub thread
Impact rate at 2.4 Mpa
1. A higher percentage of uncontaminated cuttings
2. Drilling rate similar to open hole drilling, but can often be faster and penetrate greater depths
3. One of the most accurate drilling methods
4. Quick retrieval of sample rates
5. Dry samples allow for easier analysis
1.RC drilling is a technique used in the majority of stages of mine development.
2.RC drilling is commonly employed in open-cut mines and used for pit grade control and in delivering useful insight for mine planning and blasting. It has an optimal depth of between 300-500 metres.
3.RC grade control is extremely effective in defining boundaries between ore bodies and waste rock
4.RC drilling is ideal for exploration, as it delivers contaminant-free samples, which are collected at the drill itself and can be sent immediately for assessment. It also reduces handling time, which in turn can serve to reduce overall program costs.
SOLLROC has more than 10 years of experience,each of our products follows the quality requirements and procedures to ensure finished products are durable and superior up to standard. We are dedicated to offering our customers only premium quality products and services to enable them to achieve the highest possible productivity for their business and projects.
RC drilling today produces samples of high quality and reliability. Dual-pipe RC drilling utilizes double drill rods where air is passed down the hole through the outside annulus and into the hammer. Drill cuttings are cleared from the bit by the air and travel up through the centre tube of the drill rods remaining free from contamination.