The principle of drilling involves the tool interactions to make a penetration in rock or mud. In the normal drilling process mechanical energy is dissipated through a bit to a rock or mud. Based on the behaviors of drilling system the bit responds differently. The principle of drilling concerned with providing a scientific basis of such responses, so that for a given job the right method can be selected. DTHR300-I Model, Top drive DTH Cum Rotary Rig is capable of drilling in different formations such as Hard Rock by DTH, Unconsolidated / Alluvial formations using Air/Water flush by Rotary Method, up to a depth of 300Meters, Under favorable drilling conditions.
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