Assessment of structural integrity of subsea wellhead system: analytical and numerical study
Journal article
Maligno, Angelo, Citarella, Roberto, Silberschmidt, Vadim V. and Soutis, Constantinos 2015. Assessment of structural integrity of subsea wellhead system: analytical and numerical study. Fracture and Structural Integrity. https://doi.org/10.3221/IGF-ESIS.31.08
| Authors | Maligno, Angelo, Citarella, Roberto, Silberschmidt, Vadim V. and Soutis, Constantinos |
|---|---|
| Abstract | Subsea wellhead systems exposed to severe fatigue loading are becoming increasingly a significant problem in offshore drilling operations due to their applications in wells with higher levels of pressure and temperature, situated at larger depths and in harsher environments. This has led to a substantial increase in the weight and size of offshore equipment, which, in combination with different loading conditions related to the environmental factors acting on the vessel and riser, has greatly increased the loads acting on subsea well systems. In particular, severe fatigue loading acting on the subsea wellhead system was detected. For this reason, a combined analytical and numerical study investigating the critical effect of crack depth on the overall structural integrity of subsea wellhead systems under cyclic loading was carried out. The study is based on a Linear Elastic Fracture Mechanics (LEFM) approach. |
| Keywords | Fatigue crack propagation; Zencrack; Defect assessment; Girth wields; Steel pipelines |
| Year | 2015 |
| Journal | Fracture and Structural Integrity |
| Publisher | Italian Group of Fracture |
| ISSN | 19718993 |
| Digital Object Identifier (DOI) | https://doi.org/10.3221/IGF-ESIS.31.08 |
| Web address (URL) | http://hdl.handle.net/10545/621557 |
| hdl:10545/621557 | |
| Publication dates | Jan 2015 |
| Publication process dates | |
| Deposited | 19 Apr 2017, 15:31 |
| Contributors | University of Derby, University of Salerno, Loughborough University and University of Manchester |
| File | File Access Level Open |
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