ORMEN LANGE-Conclusion: Environment drives lay techniques, tool development

The extreme conditions in place at Ormen Lange required careful consideration of not only pipelay technique, but also a wide variety of other technological factors. Norsk Hydro ASA participated in and sponsored development of both new analytical tools and improved corrosion fatigue testing data bases. It also undertook technology qualifications on a post-installed direct electrical heating system to address potential future ice plugs.This conclusion of a two-part series examines each of these efforts in turn.Part 1 (OGJ, Dec. 5, 2005, p. 62) looked at the geography and overall development plan for Ormen Lange, giving particular attention to the 30-in. multiphase production pipeline system...

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