Recent experience during reeling of pipelines with thick insulation coatings has shown that the combination of this type of coating with small changes of pipeline wall thickness and/or material properties across tie-in welds can result in unacceptable local buckling of the pipeline. This paper describes the problems experienced during mobilisation for pipeline installation on the Asgard field. The finite element analysis performed to simulate the behaviour of a pipeline with a thick insulation coating when subjected to plastic bending during reeling is explained. The analysis clearly shows that local buckling of the pipeline can and may occur for unfortunate combinations of pipeline design, coating thickness/stiffness and reeling parameters. A method has been developed whereby the critical parameters during reeling can be identified, a so-called Reeling Parameter Study. By identifying the relative importance of these parameters, and documenting the effect of remedial measures, it is now possible to prevent reoccurrence of similar problems on future projects.
Reeling of pipelines with thick insulation coating, finite-element analysis of local buckling
1999
9 Seiten, 5 Quellen
Aufsatz (Konferenz)
Englisch
Higher Order Finite Element Solutions for Thick Plate Buckling
British Library Conference Proceedings | 1996
|Tema Archiv | 2013
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