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. In some applications, heavy-weight also can be used instead of the drill collars.
Our HWDPs are made from one-piece 4145H modified quenched and tempered steel. It designed for tough drilling environments in vertical and directional wells; for vertical wells, our HWDP is a transition member; for directional holes it is a weight member and provides additional stiffness to prevent buckling.
Features and Benefits of our HWDPs
● A centre upset or wear pad to increase tube life, reduce hole drag and differential sticking problems;
● Connections are completed（phosphate coated）to protect them from the elements after machining and to help prevent galling uponinitial make-up;
● Thread roots are cold rolled on API and H-90 connections. And pressed steel thread protectors are supplied for standard connections;
● Hardbanding and Internal Coating can be provided on customer's request.
