Assessment of structural integrity of subsea wellhead system: analytical and numerical study

A.R. Maligno; R. Citarella; V.V. Silberschmidt; C. Soutis

doi:10.3221/IGF-ESIS.31.08

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

Girth welds

How to cite

APA

Maligno, A., Citarella, R., Silberschmidt, V., & Soutis, C. (2014). Assessment of structural integrity of subsea wellhead system: analytical and numerical study. Fracture and Structural Integrity, 9(31), pages 97–119. https://doi.org/10.3221/IGF-ESIS.31.08

IEEE

A. Maligno, R. Citarella, V. Silberschmidt, and C. Soutis, “Assessment of structural integrity of subsea wellhead system: analytical and numerical study,” Fracture and Structural Integrity, vol. 9, no. 31, pp. pages 97–119, 2014, doi: 10.3221/IGF-ESIS.31.08.

MLA

Maligno, A.R., et al. “Assessment of structural integrity of subsea wellhead system: analytical and numerical study.” Fracture and Structural Integrity, vol. 9, no. 31, 2014, pp. pages 97–119. https://doi.org/10.3221/IGF-ESIS.31.08.

Chicago

Maligno, A.R., R. Citarella, V.V. Silberschmidt, and C. Soutis. 2014. “Assessment of structural integrity of subsea wellhead system: analytical and numerical study.” Fracture and Structural Integrity 9 (31): pages 97–119. https://doi.org/10.3221/IGF-ESIS.31.08.

Harvard

Maligno, A., Citarella, R., Silberschmidt, V. and Soutis, C. (2014) ‘Assessment of structural integrity of subsea wellhead system: analytical and numerical study’, Fracture and Structural Integrity, 9(31), pp. pages 97–119. doi: 10.3221/IGF-ESIS.31.08.

Vancouver

Maligno A, Citarella R, Silberschmidt V, Soutis C. Assessment of structural integrity of subsea wellhead system: analytical and numerical study. Fracture and Structural Integrity. 2014;9(31):pages 97-119. doi:10.3221/IGF-ESIS.31.08

BibTeX

@article{maligno2014, author = {Maligno, A.R. and Citarella, R. and Silberschmidt, V.V. and Soutis, C.}, title = {Assessment of structural integrity of subsea wellhead system: analytical and numerical study}, journal = {Fracture and Structural Integrity}, year = {2014}, volume = {9}, number = {31}, pages = {pages 97--119}, doi = {10.3221/IGF-ESIS.31.08}, url = {https://doi.org/10.3221/IGF-ESIS.31.08}, issn = {1971-8993} }

RIS

TY - JOUR AU - Maligno, A.R. AU - Citarella, R. AU - Silberschmidt, V.V. AU - Soutis, C. TI - Assessment of structural integrity of subsea wellhead system: analytical and numerical study JO - Fracture and Structural Integrity T2 - Fracture and Structural Integrity PY - 2014 DA - 2014/12/17 VL - 9 IS - 31 SP - pages 97 EP - 119 DO - 10.3221/IGF-ESIS.31.08 UR - https://doi.org/10.3221/IGF-ESIS.31.08 SN - 1971-8993 ER -

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