This product has been discontinued and removed from our shelves.
Brief Introductions of Drill Collar We are a China oil field equipments manufacturer. Drill collar is a heavy, thick-walled tube used between the drill pipe and the bit in the drill stem. It puts weight on the bit in order to make drill pipe in tension. Drill collar can keep drill bit centralized and hole track by large rigidity.Geotec is one of the leading manufacturers of oilfield equipments such as drill collar, oil PDC bits, oil drill pipes for oil fields. Welcome to choose.