Technology Alerts: High Grade Steel Pipeline for Long Distance Natural Gas Projects

Type	Conference Paper
Author	Tiziana Cheldi
Author	Michele Castano
URL	http://www.onepetro.org/doi/10.2118/177490-MS
Publisher	Society of Petroleum Engineers
Date	2015
Abstract	The paper is aimed to highlight the topic need to better understand the use of API 5L X80 C steel for pipeline (UOE & Spiral welded) to be used for mild/harsh scenarios in onshore pipeline laying. Eni committed its interest on pipeline high strength steels by combining experimental researches and theoretic studies on structural integrity & reliability [0]. The scope is to address the design phase towards quantitative safety targets for which the reliability level specified by designer and desired by operator is pursued. X80 pipeline steel had so far not been used mainly because the lower steels grade were suitable for any of the previous applications, and also because of the predominant attitude in O&G sector to adopt new solutions is conservative; furthermore the lack of experience on "in field application", it's another reason to "freeze" the evolution process. This project was aimed to fill these gaps through an integrated "full scale and realistic long term tests" approach. The innovation embedded in this R&D project is to have an overall cycle approach, involving the analysis of aspect related to the engineering phase, enhancement in the construction methods, and last but not the least also the maintenance and daily operational duties.

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