DP-Master heavy weight drill pipe offers a flexible transition between the heavy rigid drill collars and flexible drill pipe.
This transition helps to reduce the number of fatigue failures seen directly above the bottom hole assembly. Another use of heavy weight drill pipe is to add additional weight to the drill bit.
DP-Master manufactures heavy weight drill pipe in standard and spiralled from 3-1/2’’ OD up to 6-5/8’’ OD.
Standard heavy weight drill pipe is friction welded. DP-Master also manufacture heavy weight drill pipe from an integral bar of AISI 4137H / 4145H modified alloy steel, in accordance with API / NS-1 specifications.
In addition, DP-Master offers DPM-65MS, DPM-HW90SS and IRP HWDP Grade for use in H2S environment.
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