The sulfide stress cracking (SSC) resistance of structural materials is one of the critical concerns for the operators, material designers, and fabricators of oil-field equipment, especially'treating sour gas (H2S) containing fluids. As far as its fabricators concerned, the systematic care of welding technique should be taken to obtain comparable SSC resistance of their weldment to that of its base material. In this respect, every different type of welding joint design for this use should be verified to be SSC-proof with relevant test procedures. In this study, the welding conditions to secure a proper SSC resistance of steel pipe's weldments were reviewed on the actual welding procedure qualification records (WPQR) of an offshore project. The guideline of welding process, heat input, and consumable for Y.S. 65 ksi class steel pipe material was proposed in terms of the NACE criteria for SSC resistance.
Keywords: sulfide stress cracking, sour gas, welding process, heat input, consumable, steel pipe, WPQR, Y.S. 65 ksi