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Water Well Drilling

Drilling a hole in the ground for extraction of water.Drilled wells can be excavated by simple hand drilling methods (augering, sludging, jetting, driving, hand percussion) or machine drilling (rotary, percussion, down the hole hammer). Drilled wells can get water from a much deeper level than by dug wells - often up to several hundred meters. Water-Well-Drilling

Reverse Circulation Drilling

RC drilling utilises much larger rigs and machinery and depths of up to 500 metres are routinely achieved. RC drilling ideally produces dry rock chips, as large air compressors dry the rock out ahead of the advancing drill bit. RC drilling is slower and costlier but achieves better penetration.

The most commonly used RC drill bits are 5-8 inches (12.7–20.32 cm) in diameter and have round metal 'buttons' that protrude from the bit, which are required to drill through shale and abrasive rock.

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Diamond Core Drilling

Diamond core drilling (exploration diamond drilling) utilises an annular diamond-impregnated drill bit attached to the end of hollow drill rods to cut a cylindrical core of solid rock.

By breaking the core off from time to time and using a shank extension, a diamond core drill can drill to depths many times its length.

Water-Well-Drilling
   
 
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