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5 FAQs about [Down-the-hole drill manual support video]
What is down-the-hole (DTH) drilling?
Down-the-hole (DTH) drilling tools enhance productivity and sustainability while lowering operation costs and emissions. Sandvik’s collaborative approach with customers helps us maximize drilling outcomes and elevate the drilling experience. Discover more about our latest innovation
How do you use a DTH drill?
Thrust should be kept as low as possible at all times to avoid excessive vibration in the drill string. Hold back should be increased more and more as additional rods are added and as drilling progresses. DTH drilling is primarily percussive drilling using the energy imparted by the hammer piston to the rock through the bit.
What is a down-the-hole drilling system?
It is a cost-efficient system that leaves less material behind in the hole. Down-the-hole drilling pipes are engineered with cold-drawn seamless tubing material N80 to ensure straightness, thickness and high strength for a smoother drilling process and longer service life.
How does DTH drilling work?
With DTH drilling, contractors can change the drill that they were using for the current directional bore to a rock drill when they encounter rock by connecting the drill with a compressor and a steerable hammer. Well drilling also needed changes to be made to rotary drilling when the well needed to take a turn.
How fast can you drill a well with DTH?
With DTH, it was now possible to turn 2-4 degrees curves and drill the well’s tangent up to 30 degrees or greater averaging 300 feet per hour, where rotary drilling would progress 30-40 feet per hour.