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
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
2016
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.
.
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.
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More information
Published date: 2016
Venue - Dates:
8th International Conference on Scour and Erosion, ICSE 2016, , Oxford, United Kingdom, 2016-09-12 - 2016-09-15
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
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Date deposited: 09 May 2018 16:30
Last modified: 05 Mar 2024 02:54
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Contributors
Author:
T. Griffiths
Author:
S. Draper
Author:
W. Sun
Author:
L. Cheng
Author:
H. An
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