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Advantages over other ring bit system |
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• Straighter Holes: The Xs drill system will drill in most overburden with almost no deviation. The driver bit has a pilot portion that drills, 3" to 5", before the crown bit, allowing it to keep the pipe very straight. • Better Rate of Penetration: One advantage drilling with the Xs drill system is the size of the DTH hammer used. If you have a lot of boulders or if you need to drill in fractured rock, the Xs is the only system offering the possibility to use a larger hammer to drill with the crown. The penetration rate in rocks will be almost the same as if you are drilling with a conventional oversized bit. • Direct Energy Transfer: With the Xs drill system, the energy given by the hammer is transfer directly and entirely to the drilling part of the crown bit, and not to the driving shoe. • Easier to Weld: The crown bit is composed of two (2) assembled swivel parts. The lower rotating part which has carbide buttons to drill, receives the impact and rotation from the hammer. The upper part is welded to the casing, but doesn't receive any percussion directly from the hammer. It is pulled down with the casing through a swivel joint. The impact to the joint is minimized because the drilling action of the rotating crown portion has absorbed most of it, leaving however enough energy to pull down the casing. • Less Maintenance: In almost any other system, there is a lot of maintenance to do on the most expensive part which is the driver device. The driving shoe is fixed to the casing and the driver rotates and impact on the upper shoe causing rapid wear to appear on the driver which then needs to be rebuilt or replaced. On the Xs drill system, that grinding effect is transfer to the swivel joint between the upper and lower part of the crown, which is left in the hole 90% of the time. Experience the difference with the Xs drill system |
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luc@georocfor.ca with
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