Is capable of drilling depth of 4000 m (13,100 ft) with 4-1/2" DP and represents the largest self-propelled truck mounted drilling rig in the lineup. It comes equipped with two C-18 diesel engines to serve as its main power source.
[pdf] Rugged, long-lasting design makes these amazing drill rigs as dependable as they are powerful. Dual rotary drill rigs have two rotary drive mechanisms, an upper rotary head and a high torque lower drive unit.
[pdf] A rotary drilling rig works by rotating a drill string, which applies downward pressure to a drill bit that grinds the earth. Drilling fluid or air is pumped down the drill string to cool the bit, carry cuttings to the surface, and stabilize the borehole.
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