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Investigation of scour onset under seabed pipelines with geometric irregularities

Investigation of scour onset under seabed pipelines with geometric irregularities
Investigation of scour onset under seabed pipelines with geometric irregularities

Based on previous studies, it is well understood that the hydrodynamic pressure difference across the pipeline is responsible for initiation of piping and the onset of scour. However, the influence of geometric irregularities such as field joints on the onset of scour has not previously been investigated. This new study has been stimulated by field observations of subsea pipelines that have indicated that scour holes tend to occur at field joint locations. This paper summarizes a series of experimental results using The University of Western Australia’s (UWA)‘s unique O-tube test facilities investigating onset of scour underneath scaled model pipelines with a field joint in steady currents. The results of this work are benchmarked against experimental tests and published results for prismatic/uniform pipes. It is demonstrated that periodic geometric irregularities such as field joints have a significant influence on the onset of scour underneath a pipeline.

Anode, Field joint, Piping, Scour, Stablepipe jip, Subsea pipeline
191-200
CRC Press / Balkema
Griffiths, T.
92587c05-88c4-44fe-b57c-78d71c611eba
Draper, S.
0f43dd70-abdf-4ba3-a9e0-6b4ba932b61e
Sun, W.
9ffbe0cc-7fbf-447f-a054-62c2e18e6fd0
White, D.
a986033d-d26d-4419-a3f3-20dc54efce93
Cheng, L.
bf8c4fb2-e730-4978-8f47-17264976556f
An, H.
7268aa4f-4ba9-497c-bd05-cfe591093a05
Griffiths, T.
92587c05-88c4-44fe-b57c-78d71c611eba
Draper, S.
0f43dd70-abdf-4ba3-a9e0-6b4ba932b61e
Sun, W.
9ffbe0cc-7fbf-447f-a054-62c2e18e6fd0
White, D.
a986033d-d26d-4419-a3f3-20dc54efce93
Cheng, L.
bf8c4fb2-e730-4978-8f47-17264976556f
An, H.
7268aa4f-4ba9-497c-bd05-cfe591093a05

Griffiths, T., Draper, S., Sun, W., White, D., Cheng, L. and An, H. (2016) Investigation of scour onset under seabed pipelines with geometric irregularities. In Scour and Erosion: Proceedings of the 8th International Conference on Scour and Erosion, ICSE 2016. CRC Press / Balkema. pp. 191-200 .

Record type: Conference or Workshop Item (Paper)

Abstract

Based on previous studies, it is well understood that the hydrodynamic pressure difference across the pipeline is responsible for initiation of piping and the onset of scour. However, the influence of geometric irregularities such as field joints on the onset of scour has not previously been investigated. This new study has been stimulated by field observations of subsea pipelines that have indicated that scour holes tend to occur at field joint locations. This paper summarizes a series of experimental results using The University of Western Australia’s (UWA)‘s unique O-tube test facilities investigating onset of scour underneath scaled model pipelines with a field joint in steady currents. The results of this work are benchmarked against experimental tests and published results for prismatic/uniform pipes. It is demonstrated that periodic geometric irregularities such as field joints have a significant influence on the onset of scour underneath a pipeline.

Full text not available from this repository.

More information

Published date: 2016
Venue - Dates: 8th International Conference on Scour and Erosion, ICSE 2016, , Oxford, United Kingdom, 2016-09-11 - 2016-09-14
Keywords: Anode, Field joint, Piping, Scour, Stablepipe jip, Subsea pipeline

Identifiers

Local EPrints ID: 420511
URI: http://eprints.soton.ac.uk/id/eprint/420511
PURE UUID: 12046b28-bf72-46d7-8142-854eac8a185b
ORCID for D. White: ORCID iD orcid.org/0000-0002-2968-582X

Catalogue record

Date deposited: 09 May 2018 16:30
Last modified: 15 Apr 2021 01:55

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Contributors

Author: T. Griffiths
Author: S. Draper
Author: W. Sun
Author: D. White ORCID iD
Author: L. Cheng
Author: H. An

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