High-pressure operation through high strength linepipe reduces long distance transportation cost of natural gas. In order to maximize the cost reduction, X120 UOE pipe has been developed. Low C-Mo-B steel with fine-grained lower bainite (LB) microstructure realizes high strength, excellent low temperature toughness and good weldability. The technology was verified in small-scale commercial production or “mini-rolls”. Suitability for use as linepipe was demonstrated through an extensive development program that covers burst test, fracture toughness evaluation, girth welding technology, etc. A demonstration line was successfully constructed using the pipes manufactured in the “mini-rolls”.
- International Petroleum Technology Institute
Development and Properties of Ultra-High Strength UOE Linepipe
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Asahi, H, Hara, T, Tsuru, E, Morimoto, H, Terada, Y, Sugiyama, M, Murata, M, Doi, N, Miyazaki, H, Yoshida, T, Ayukawa, N, & Akasaki, H. "Development and Properties of Ultra-High Strength UOE Linepipe." Proceedings of the 2004 International Pipeline Conference. 2004 International Pipeline Conference, Volumes 1, 2, and 3. Calgary, Alberta, Canada. October 4–8, 2004. pp. 1733-1742. ASME. https://doi.org/10.1115/IPC2004-0230
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