The technique is often also referred to as cable tool.
Cable percussion drilling method.
A cable percussion crew consists of two fully nvq trained operatives one lead driller and an additional support operative.
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.
This is part of a new series of videos we have launched covering safe and effective drilling on geo environmental and geotechnical site investigations.
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.
Our crew process.
Our drilling operatives also have various certifications such as sssts.
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.
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.
Depending on access limitations and favourable ground conditions boreholes up to 60m depth can be formed.
Cable percussion drilling can also drill deeper and drill further into the water table than other drilling methods.
Cable percussion drilling has long been the most common form of drilling in the united kingdom if not the world.
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 shell and auger is the most common drilling method used for geotechnical site or ground investigations in the uk.
Cable tool drilling is a method of drilling in which a hole is made by the repeated blows generated by lifting and dropping a heavy chisel bit on rocks or underground formations.
Cable tool drilling method.
