KW300 water well drilling rig is mainly used for the drilling of water wells, agricultural wells and so on. It is especially ideal for the well drilling projects in mountain and rock areas. Its efficiency is 10 times higher than traditional rotary drilling rigs, creating considerable economy benefits for users. This geothermal driller solves the difficulty of DTH drilling rig in drilling soil and solves the construction problems of rotary drilling rigs in hard rock layer, gravel and pebble layers. This well driller can efficiently operate under various complicated geological conditions and serves as both gas and water driller.