JK850 Large Diameter Water Well Drilling Rig Municipal and industrial wells usually need more water than a small-diameter hole can deliver. The JK850 handles this properly: it drills holes up to 600mm in diameter and still reaches 850 meters deep. The 850mm through-hole rotary table is the key - it gives you room to run big casing and large-diameter tools without restriction. Big holes need big mud flow. The 850 L/min mud pump keeps the annulus clean and carries cuttings out
