How do well rigs drill rock?

- Jun 01, 2019-

       Well drilling rig, is to the underground drilling, after this hole will be out of water, put on the pipe into a well.

       In the downward drilling, the bottom end of the drill pipe has a drill bit, this drill bit has several models, very hard, have to be relatively light to grind the rock into powder, the middle rock does not need to grind, will be lifted from the drill pipe. In the process of drilling, drilling opportunity to drive the drill pipe, drill bit, high-speed rotation, and pressure down, these two forces to the rock, the rock in contact with the drill bit in front of grinding powder, rock powder is filled with water to the surface, flow edgy.