The rotary water well drilling rig mainly relies on the rotary motion of the drilling tool to break the rock formation and form the hole. Common ones are large and small pot cone …
The impact water well drilling rig uses the vertical reciprocating motion of the drilling tool to make the drill bit impact the bottom of the well to break the rock formation. Its structure is …
In the 2nd century BC, China has used manpower and used bamboo bow elastic force to make the cone drill bit impact the ground to drill. Later, it was used in rural China for a …