Assessment of structural integrity of subsea wellhead system: analytical and numerical study
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 subs...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Gruppo Italiano Frattura
2015-01-01
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| Series: | Fracture and Structural Integrity |
| Subjects: | |
| Online Access: | http://www.gruppofrattura.it/pdf/rivista/numero31/numero_31_art_8.pdf |
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| Summary: | 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. |
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| ISSN: | 1971-8993 1971-8993 |