Cable tool drilling method.
Cable percussion drilling method.
Percussion drilling is a drilling technique in which a drill bit attached to rope or cable is repeatedly raised and lowered impacting soil and rock and making a hole deeper.
Frequently used to drill wells or during mineral prospecting activities this type of drilling has been used for thousands of years and is adaptable to whatever technology is available.
Cable percussion drilling has long been the most common form of drilling in the united kingdom if not the world.
This is part of a new series of videos we have launched covering safe and effective drilling on geo environmental and geotechnical site investigations.
A cable percussion crew consists of two fully nvq trained operatives one lead driller and an additional support operative.
Percussion drilling is a manual drilling technique in which a heavy cutting or hammering bit attached to a rope or cable is lowered in the open hole or inside a temporary casing.
The drilling technique allows the installation of casing inside the borehole to prevent loose soils collapsing into the hole allowing the borehole to be advanced to considerable depths while maintaining good progress.
Cable percussion shell and auger is the most common drilling method used for geotechnical site or ground investigations in the uk.
Our drilling operatives also have various certifications such as sssts.
The technique is often also referred to as cable tool.
It has proven its worth as a drilling methodology time and time again and its reliability is just one of the reasons why it has become so popular to geotechnical drilling companies.
Cable percussion drilling is a tried and tested method of site investigation.
The heavy usually blunt chisel bit is the tool and the cable could be made of something as simple as a manila rope or multiple steel strands wireline.
The danbar drilling team are able to deliver extremely reliable and effective cable percussive drilling techniques which offer high levels of cost efficiency as well as a range of technical benefits.
Thanks to our experience and versatile rigs this method of drilling is ideal for use alone or as part of a wider drilling strategy on site.
Depending on access limitations and favourable ground conditions boreholes up to 60m depth can be formed.
