Can rotary drilling machine be used in rock layer?
Models are generally not available, and large torque can be used for rocks that are not too hard. Rotary drilling rig is suitable for pumping out formation.
The rock layer depends on the hardness, I have seen the 280 rig called 700KPA mudstone and 2200KPA granite, and 250 rigs played 4000KPA to beat rock schist, the key lies in the construction of rotary drilling rig, a rock speed is very slow.
No, because of the outside! The rock is rather hard, while the rotary drilling rig is suitable for the formation of scattered formations
