Controlling lateral buckling of subsea pipeline with sinusoidal shape pre-deformation

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

It is common for subsea pipelines to operate at high pressures and high temperatures (HPHT) conditions. The build-up of axial force along the pipeline due to temperature and pressure differences from as-laid conditions coupled with the influence of the seabed soil that restricts free movement of the pipeline can result in the phenomenon called ‘lateral buckling’. The excessive lateral deformation from lateral buckling may risk safe operation of the pipeline due to local axial strains that potentially could be severe enough to cause fracture failure of welds or collapse of the pipeline. Engineered buckles may be initiated reliably during operation by using special subsea structures or lay methods which are expensive. This paper introduces and exemplifies a novel method that involves continuously deforming the pipeline prior to or during installation with prescribed radius and wavelength to control lateral buckling that could be a valuable modification of the practical design of offshore pipelines. Previous published work has shown that installation of a pipeline with such continuous deformations is feasible. The results from an example pipeline case described here show that the pipeline can be installed and operated safely at elevated temperatures without the need for other expensive buckle initiation methods.

Original languageEnglish
Pages (from-to)170-190
Number of pages21
JournalOcean Engineering
Volume151
DOIs
Publication statusPublished - 1 Mar 2018

Fingerprint

Buckling
Pipelines
Offshore pipelines
Temperature
Welds
Soils
Wavelength

Cite this

@article{0202b758767349dd88bb864b09d72aeb,
title = "Controlling lateral buckling of subsea pipeline with sinusoidal shape pre-deformation",
abstract = "It is common for subsea pipelines to operate at high pressures and high temperatures (HPHT) conditions. The build-up of axial force along the pipeline due to temperature and pressure differences from as-laid conditions coupled with the influence of the seabed soil that restricts free movement of the pipeline can result in the phenomenon called ‘lateral buckling’. The excessive lateral deformation from lateral buckling may risk safe operation of the pipeline due to local axial strains that potentially could be severe enough to cause fracture failure of welds or collapse of the pipeline. Engineered buckles may be initiated reliably during operation by using special subsea structures or lay methods which are expensive. This paper introduces and exemplifies a novel method that involves continuously deforming the pipeline prior to or during installation with prescribed radius and wavelength to control lateral buckling that could be a valuable modification of the practical design of offshore pipelines. Previous published work has shown that installation of a pipeline with such continuous deformations is feasible. The results from an example pipeline case described here show that the pipeline can be installed and operated safely at elevated temperatures without the need for other expensive buckle initiation methods.",
keywords = "High pressure, High temperature (HPHT), Pipeline, Pipeline failure modes, Pipeline lateral buckling, Pre-deformed pipeline (PDP), Soil interaction (PSI), Subsea pipeline novel design",
author = "Jayden Chee and Alastair Walker and David White",
year = "2018",
month = "3",
day = "1",
doi = "10.1016/j.oceaneng.2018.01.024",
language = "English",
volume = "151",
pages = "170--190",
journal = "Ocean Engineering",
issn = "0029-8018",
publisher = "Pergamon",

}

Controlling lateral buckling of subsea pipeline with sinusoidal shape pre-deformation. / Chee, Jayden; Walker, Alastair; White, David.

In: Ocean Engineering, Vol. 151, 01.03.2018, p. 170-190.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Controlling lateral buckling of subsea pipeline with sinusoidal shape pre-deformation

AU - Chee, Jayden

AU - Walker, Alastair

AU - White, David

PY - 2018/3/1

Y1 - 2018/3/1

N2 - It is common for subsea pipelines to operate at high pressures and high temperatures (HPHT) conditions. The build-up of axial force along the pipeline due to temperature and pressure differences from as-laid conditions coupled with the influence of the seabed soil that restricts free movement of the pipeline can result in the phenomenon called ‘lateral buckling’. The excessive lateral deformation from lateral buckling may risk safe operation of the pipeline due to local axial strains that potentially could be severe enough to cause fracture failure of welds or collapse of the pipeline. Engineered buckles may be initiated reliably during operation by using special subsea structures or lay methods which are expensive. This paper introduces and exemplifies a novel method that involves continuously deforming the pipeline prior to or during installation with prescribed radius and wavelength to control lateral buckling that could be a valuable modification of the practical design of offshore pipelines. Previous published work has shown that installation of a pipeline with such continuous deformations is feasible. The results from an example pipeline case described here show that the pipeline can be installed and operated safely at elevated temperatures without the need for other expensive buckle initiation methods.

AB - It is common for subsea pipelines to operate at high pressures and high temperatures (HPHT) conditions. The build-up of axial force along the pipeline due to temperature and pressure differences from as-laid conditions coupled with the influence of the seabed soil that restricts free movement of the pipeline can result in the phenomenon called ‘lateral buckling’. The excessive lateral deformation from lateral buckling may risk safe operation of the pipeline due to local axial strains that potentially could be severe enough to cause fracture failure of welds or collapse of the pipeline. Engineered buckles may be initiated reliably during operation by using special subsea structures or lay methods which are expensive. This paper introduces and exemplifies a novel method that involves continuously deforming the pipeline prior to or during installation with prescribed radius and wavelength to control lateral buckling that could be a valuable modification of the practical design of offshore pipelines. Previous published work has shown that installation of a pipeline with such continuous deformations is feasible. The results from an example pipeline case described here show that the pipeline can be installed and operated safely at elevated temperatures without the need for other expensive buckle initiation methods.

KW - High pressure

KW - High temperature (HPHT)

KW - Pipeline

KW - Pipeline failure modes

KW - Pipeline lateral buckling

KW - Pre-deformed pipeline (PDP)

KW - Soil interaction (PSI)

KW - Subsea pipeline novel design

UR - http://www.scopus.com/inward/record.url?scp=85044657744&partnerID=8YFLogxK

U2 - 10.1016/j.oceaneng.2018.01.024

DO - 10.1016/j.oceaneng.2018.01.024

M3 - Article

VL - 151

SP - 170

EP - 190

JO - Ocean Engineering

JF - Ocean Engineering

SN - 0029-8018

ER -