One can categorize the borewell drilling methods according to their drilling machines. It is essential to choose the right drilling method depending upon the purpose of the borewell drilling and the type of soil present in that area. Some of the commonly known drilling methods are For shallow bores-
Water Jetting and Augur Drilling are suitable for shallow bores in alluvial soil
Calyx Drilling are suitable for shallow borewells in both hard rock and alluvial soil
For deep bores-
Percussion Drilling is for deep bores in boulder soil
Rotary Drilling is most commonly used for drilling large and deep bores in alluvial soil. While DTH Drilling does the same in hard rock soil.