HEAVY WEIGHT DRILL PIPE

Heavy Weight Drill Pipe (short for HWDP) is an intermediate weight drill stem component which is used in conjunction with the drill pipe and drill collars. TIAHNE HWDP is available in standard, spiral and non-magnetic designs. In some applications, heavy-weight also can be used instead of the drill collars.
TIANHE Drill Collar has been approved by the NS-1 certification which is made from one-piece 4145H modified quenched and tempered steel. It designed for tough drilling environments in vertical and directional wells; for vertical wells, TIANHE HWDP is a transition member; for directional holes it is a weight member and provides additional stiffness to prevent buckling.