FATIGUE ANALYSIS OF FREE STANDING DRILLING RISER DUE TO VORTEX INDUCED VIBRATION UNDER EXTREME WEATHER CONDITIONS

A Free-Standing Drilling Riser (FSDR) is a modification to drilling risers that enables rapid disconnection during extreme weather event. This mechanism considered a great solution, as pulling back the whole riser string is a time exhaustive procedure. Vortex induced vibration (VIV) is a well-known...

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Main Author: RIDZUAN, ANAS FADHIL
Format: Final Year Project
Language: English
Institution: Universiti Teknologi Petronas
Record Id / ISBN-0: utp-utpedia.19275 /
Published: IRC 2018
Subjects:
TJ Mechanical engineering and machinery
Online Access: http://utpedia.utp.edu.my/19275/1/dissertation_anas%20fadhil_20307.pdf
http://utpedia.utp.edu.my/19275/
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spelling utp-utpedia.192752019-06-18T09:35:49Z http://utpedia.utp.edu.my/19275/ FATIGUE ANALYSIS OF FREE STANDING DRILLING RISER DUE TO VORTEX INDUCED VIBRATION UNDER EXTREME WEATHER CONDITIONS RIDZUAN, ANAS FADHIL TJ Mechanical engineering and machinery A Free-Standing Drilling Riser (FSDR) is a modification to drilling risers that enables rapid disconnection during extreme weather event. This mechanism considered a great solution, as pulling back the whole riser string is a time exhaustive procedure. Vortex induced vibration (VIV) is a well-known important source of fatigue damage of offshore oil exploration and production risers. Extreme weather condition could amplify the effect of VIV towards the FSDR due to higher velocity of current and larger wave impact. Despite various studies has been carried out regarding FSDR, the impact of VIV towards fatigue life of FSDR remains unknown. In this paper, a fatigue analysis of FSDR due to VIV are presented. The objectives of this paper are to determine the location on the FSDR with worst damage rate due to VIV and to estimate the fatigue life of the FSDR under extreme weather condition. Shear7 software, a frequency domain VIV prediction program is used to carry out VIV analysis and fatigue analysis. The result shows that there are two potentially excitation modes of vibration making the FSDR oscillate during extreme weather, thus increasing the damage rate per year and reducing the fatigue life of the riser itself. The worst damage rate is computed at the lower section of the riser, which is at 87.4% of the riser length from the top with lowest fatigue life of 2.23 years. IRC 2018-01 Final Year Project NonPeerReviewed application/pdf en http://utpedia.utp.edu.my/19275/1/dissertation_anas%20fadhil_20307.pdf RIDZUAN, ANAS FADHIL (2018) FATIGUE ANALYSIS OF FREE STANDING DRILLING RISER DUE TO VORTEX INDUCED VIBRATION UNDER EXTREME WEATHER CONDITIONS. IRC, Universiti Teknologi PETRONAS. (Submitted)
institution Universiti Teknologi Petronas
collection UTPedia
language English
topic TJ Mechanical engineering and machinery
spellingShingle TJ Mechanical engineering and machinery
RIDZUAN, ANAS FADHIL
FATIGUE ANALYSIS OF FREE STANDING DRILLING RISER DUE TO VORTEX INDUCED VIBRATION UNDER EXTREME WEATHER CONDITIONS
description A Free-Standing Drilling Riser (FSDR) is a modification to drilling risers that enables rapid disconnection during extreme weather event. This mechanism considered a great solution, as pulling back the whole riser string is a time exhaustive procedure. Vortex induced vibration (VIV) is a well-known important source of fatigue damage of offshore oil exploration and production risers. Extreme weather condition could amplify the effect of VIV towards the FSDR due to higher velocity of current and larger wave impact. Despite various studies has been carried out regarding FSDR, the impact of VIV towards fatigue life of FSDR remains unknown. In this paper, a fatigue analysis of FSDR due to VIV are presented. The objectives of this paper are to determine the location on the FSDR with worst damage rate due to VIV and to estimate the fatigue life of the FSDR under extreme weather condition. Shear7 software, a frequency domain VIV prediction program is used to carry out VIV analysis and fatigue analysis. The result shows that there are two potentially excitation modes of vibration making the FSDR oscillate during extreme weather, thus increasing the damage rate per year and reducing the fatigue life of the riser itself. The worst damage rate is computed at the lower section of the riser, which is at 87.4% of the riser length from the top with lowest fatigue life of 2.23 years.
format Final Year Project
author RIDZUAN, ANAS FADHIL
author_sort RIDZUAN, ANAS FADHIL
title FATIGUE ANALYSIS OF FREE STANDING DRILLING RISER DUE TO VORTEX INDUCED VIBRATION UNDER EXTREME WEATHER CONDITIONS
title_short FATIGUE ANALYSIS OF FREE STANDING DRILLING RISER DUE TO VORTEX INDUCED VIBRATION UNDER EXTREME WEATHER CONDITIONS
title_full FATIGUE ANALYSIS OF FREE STANDING DRILLING RISER DUE TO VORTEX INDUCED VIBRATION UNDER EXTREME WEATHER CONDITIONS
title_fullStr FATIGUE ANALYSIS OF FREE STANDING DRILLING RISER DUE TO VORTEX INDUCED VIBRATION UNDER EXTREME WEATHER CONDITIONS
title_full_unstemmed FATIGUE ANALYSIS OF FREE STANDING DRILLING RISER DUE TO VORTEX INDUCED VIBRATION UNDER EXTREME WEATHER CONDITIONS
title_sort fatigue analysis of free standing drilling riser due to vortex induced vibration under extreme weather conditions
publisher IRC
publishDate 2018
url http://utpedia.utp.edu.my/19275/1/dissertation_anas%20fadhil_20307.pdf
http://utpedia.utp.edu.my/19275/
_version_ 1741195472949739520
score 11.62408

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