A: For deep-well or ultra-deep drilling where high tensile loads are expected, G-105 or S-135 grades are recommended due to their superior yield and tensile strength. Grade E-75 is typically used for shallow to medium-depth wells.
A: Internal Plastic Coating (IPC) provides a smooth surface that reduces hydraulic friction (increasing ROP) and acts as a barrier against corrosive drilling fluids (H2S and CO2), extending the life of the pipe string.
A: Yes. We provide specialized Sour Service Drill Pipes that meet IRP 1.8 requirements. These are manufactured with controlled hardness and chemistry to resist hydrogen-induced cracking (HIC) and sulfide stress cracking (SSC).
A: Absolutely. Shangshan Petro provides both Integral and Welded Heavy-Weight Drill Pipes which serve as a transition zone between the flexible drill pipe and the rigid drill collars, reducing fatigue and stress on the drill string.
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