Bore Well Services In Coimbatore Method Of Drilling Water Jetting – Shallow bores in alluvial formations. Augur Drilling – Shallow bores in alluvial formations. Calyx Drilling – Shallow bore well in both hard rock and alluvial formation. Percussion Drilling – Deep bores in boulder formation. Rotary Drilling – Most common method used for drilling large and deep bores in alluvial formations. Down the Hole Hammering (DTH) Drilling – Most common method for drilling large and deep bore wells in hard rock formations. Bore well Drillers may sink a borehole using a Drilling rig or hand Operated Rig. We are think about techniques and geological conditions, considered the intended purpose. Because is that one and only customer satisfactory. very good four inch & 6 1/2 bore well drilling and its bore well service in given by our Siva Sakthi Bore well In Coimbatore. 4 inches and 6 inches borewell are usually drilling process. four inches borewell are most commonly drilled borewells for domestic purpose.