The University of Southampton
University of Southampton Institutional Repository

Pipeline stability revisited

Pipeline stability revisited
Pipeline stability revisited

The stability assessment of the 40 in. North Rankin A trunkline, operated by Woodside Energy Ltd., has provided better insight into fluid-soil-pipe interactions during extreme storm events. The resulting conclusion of the work is that the trunkline, a major subsea natural gas artery in Australia's Northwest Shelf since its installation in 1982, can continue to be operated safely for the next 30 years from a hydrodynamic stability point of view. This conclusion was reached after substantial study and physical model testing was performed considering the tripartite interaction between fluid, seabed, and pipeline. To provide vital information feeding into the stability analysis, a physical model testing programme was developed, and a new world-class hydrodynamic testing facility designed, constructed, and commissioned at the University of Western Australia. This facility allows the replication of near-seabed conditions during tropical cyclones in controlled laboratory conditions, and observation of the interaction between ocean, seabed, and pipeline. Tests were performed using a range of pipeline embedment profiles, storm realizations, and pipe fixity conditions simultaneously to model hydrodynamic loading onto the pipeline and seabed scour. These data were then used in the three-dimensional numerical modelling of pipeline response using finite-element analyses, which included the effects of seabed instability.

1753-2116
259-268
Jas, E.
4f663658-b5c6-4dcb-8bfb-e47a622c8b8d
O'Brien, D.
afe6c2c2-301b-4615-9ae7-14892b718c8d
Fricke, R.
e5d5c573-d00a-473e-887f-0b80263049ac
Gillen, A.
2e8fee23-b1db-4371-96c3-415680a94f78
Cheng, L.
5432f3cb-cb52-4db6-8c7e-32d7b5ad830e
White, D.
a986033d-d26d-4419-a3f3-20dc54efce93
Palmer, A.
617b40ec-c816-46a0-951c-11f6c27c79af
Jas, E.
4f663658-b5c6-4dcb-8bfb-e47a622c8b8d
O'Brien, D.
afe6c2c2-301b-4615-9ae7-14892b718c8d
Fricke, R.
e5d5c573-d00a-473e-887f-0b80263049ac
Gillen, A.
2e8fee23-b1db-4371-96c3-415680a94f78
Cheng, L.
5432f3cb-cb52-4db6-8c7e-32d7b5ad830e
White, D.
a986033d-d26d-4419-a3f3-20dc54efce93
Palmer, A.
617b40ec-c816-46a0-951c-11f6c27c79af

Jas, E., O'Brien, D., Fricke, R., Gillen, A., Cheng, L., White, D. and Palmer, A. (2012) Pipeline stability revisited. The Journal of Pipeline Engineering, 12 (4), 259-268.

Record type: Article

Abstract

The stability assessment of the 40 in. North Rankin A trunkline, operated by Woodside Energy Ltd., has provided better insight into fluid-soil-pipe interactions during extreme storm events. The resulting conclusion of the work is that the trunkline, a major subsea natural gas artery in Australia's Northwest Shelf since its installation in 1982, can continue to be operated safely for the next 30 years from a hydrodynamic stability point of view. This conclusion was reached after substantial study and physical model testing was performed considering the tripartite interaction between fluid, seabed, and pipeline. To provide vital information feeding into the stability analysis, a physical model testing programme was developed, and a new world-class hydrodynamic testing facility designed, constructed, and commissioned at the University of Western Australia. This facility allows the replication of near-seabed conditions during tropical cyclones in controlled laboratory conditions, and observation of the interaction between ocean, seabed, and pipeline. Tests were performed using a range of pipeline embedment profiles, storm realizations, and pipe fixity conditions simultaneously to model hydrodynamic loading onto the pipeline and seabed scour. These data were then used in the three-dimensional numerical modelling of pipeline response using finite-element analyses, which included the effects of seabed instability.

Full text not available from this repository.

More information

Published date: December 2012

Identifiers

Local EPrints ID: 419914
URI: https://eprints.soton.ac.uk/id/eprint/419914
ISSN: 1753-2116
PURE UUID: 83eb242c-0351-465e-85df-af0c64c39223
ORCID for D. White: ORCID iD orcid.org/0000-0002-2968-582X

Catalogue record

Date deposited: 23 Apr 2018 16:30
Last modified: 20 Jul 2019 00:25

Export record

Contributors

Author: E. Jas
Author: D. O'Brien
Author: R. Fricke
Author: A. Gillen
Author: L. Cheng
Author: D. White ORCID iD
Author: A. Palmer

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of https://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×