p-y curves for Fatigue Analysis of Offshore Drilling Conductor Systems

Mariajose Guevara Castillo

doi:10.26182/dbxt-n942

p-y curves for Fatigue Analysis of Offshore Drilling Conductor Systems

Mariajose Guevara Castillo

School of Engineering

Research output: Thesis › Doctoral Thesis

327 Downloads (Pure)

Abstract

Fatigue life assessment is a critical design driver of conductor-wellhead components in subsea drilling systems. Existing methods do not model the soil-structure interaction adequately. This research studied the changes in strength and stiffness of soil-conductor interaction due to load history, and provided approaches for their inclusion in design. This was achieved through comparison of physical modelling tests on soft soils and numerical modelling using several frameworks for fatigue analysis. The impact of the p-y curves selected on the bending moment profile of a conductor and on the fatigue life assessment of the components of the system was discussed.

Original language	English
Qualification	Doctor of Philosophy
Awarding Institution	The University of Western Australia
Supervisors/Advisors	Doherty, James, Supervisor Watson, Phil, Supervisor
Thesis sponsors	Australian Government Research Training Program
Award date	10 Feb 2023
DOIs	https://doi.org/10.26182/dbxt-n942
Publication status	Unpublished - 2023

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10.26182/dbxt-n942

THESIS - DOCTOR OF PHILOSOPHY - GUEVARA CASTILLO, Mariajose - 2023
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3 Conference paper
2 Article

A comparison study of soil-conductor stiffness from centrifuge and laboratory testing
Guevara Castillo, M., Doherty, J., Watson, P., White, D., Boylan, N. & Teng, Y., 2022, Proceedings of 20th International Conference on Soil Mechanics and Geotechnical Engineering: A Geotechnical Discovery Down Under. Rahman, M. M. & Jaksa, M. (eds.). Sydney: Australian Geomechanics Society, p. 2627-2632
Research output: Chapter in Book/Conference paper › Conference paper › peer-review
A cyclic p-y model for the whole-life response of piles in soft clay
White, D. J., Doherty, J. P., Guevara, M. & Watson, P. G., Jan 2022, In: Computers and Geotechnics. 141, 104519.
Research output: Contribution to journal › Article › peer-review

Open Access
22 Citations (Scopus)
Evaluating Uncertainty Associated with Engineering Judgement in Predicting the Lateral Response of Conductors
Guevara, M., Doherty, J. P., Gaudin, C. & Watson, P. G., 17 Jan 2022, In: Journal of Geotechnical and Geoenvironmental Engineering. 148, 5, 05022001.
Research output: Contribution to journal › Article › peer-review

Open Access
14 Citations (Scopus)

Cite this

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title = "p-y curves for Fatigue Analysis of Offshore Drilling Conductor Systems",

abstract = "Fatigue life assessment is a critical design driver of conductor-wellhead components in subsea drilling systems. Existing methods do not model the soil-structure interaction adequately. This research studied the changes in strength and stiffness of soil-conductor interaction due to load history, and provided approaches for their inclusion in design. This was achieved through comparison of physical modelling tests on soft soils and numerical modelling using several frameworks for fatigue analysis. The impact of the p-y curves selected on the bending moment profile of a conductor and on the fatigue life assessment of the components of the system was discussed.",

keywords = "Drilling Conductors, Fatigue, p-y Curves, Centrifuge testing, Soil Element Testing, Whole-life Analysis, Laterally Loaded piles, Soft Soils",

author = "{Guevara Castillo}, Mariajose",

year = "2023",

doi = "10.26182/dbxt-n942",

language = "English",

school = "The University of Western Australia",

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AU - Guevara Castillo, Mariajose

PY - 2023

Y1 - 2023

N2 - Fatigue life assessment is a critical design driver of conductor-wellhead components in subsea drilling systems. Existing methods do not model the soil-structure interaction adequately. This research studied the changes in strength and stiffness of soil-conductor interaction due to load history, and provided approaches for their inclusion in design. This was achieved through comparison of physical modelling tests on soft soils and numerical modelling using several frameworks for fatigue analysis. The impact of the p-y curves selected on the bending moment profile of a conductor and on the fatigue life assessment of the components of the system was discussed.

AB - Fatigue life assessment is a critical design driver of conductor-wellhead components in subsea drilling systems. Existing methods do not model the soil-structure interaction adequately. This research studied the changes in strength and stiffness of soil-conductor interaction due to load history, and provided approaches for their inclusion in design. This was achieved through comparison of physical modelling tests on soft soils and numerical modelling using several frameworks for fatigue analysis. The impact of the p-y curves selected on the bending moment profile of a conductor and on the fatigue life assessment of the components of the system was discussed.

KW - Drilling Conductors

KW - Fatigue

KW - p-y Curves

KW - Centrifuge testing

KW - Soil Element Testing

KW - Whole-life Analysis

KW - Laterally Loaded piles

KW - Soft Soils

U2 - 10.26182/dbxt-n942

DO - 10.26182/dbxt-n942

M3 - Doctoral Thesis

ER -

p-y curves for Fatigue Analysis of Offshore Drilling Conductor Systems

Abstract

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Research output

A comparison study of soil-conductor stiffness from centrifuge and laboratory testing

A cyclic p-y model for the whole-life response of piles in soft clay

Evaluating Uncertainty Associated with Engineering Judgement in Predicting the Lateral Response of Conductors

Cite this