Rotary drilling machine, also known as pile driver. It is a comprehensive drilling rig, for its usage of a variety of bottom layers, the characteristics of fast forming layers, less pollution, and strong mobility.
[pdf] Driven pile and helical or screw pile foundations are good alternatives that have been used successfully, even for very large reciprocating compressor packages. A pile foundation has the advantage of lower costs and shorter installation time compared to concrete block foundations.
[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.
[pdf] 
