Modelling changes to submarine pipeline embedment and stability due to pipeline scour

Research output: Contribution to conferenceAbstract

2 Citations (Scopus)

Abstract

In this paper a beam bending model is combined with existing predictive formulas for pipeline scour to study changes to pipeline stability during scour and lowering. The model is introduced and demonstrated for a range of simplified conditions, including scour-induced lowering of a pipeline resulting from multiple uniformly spaced scour initiation points. The model is then used with a synthetic seabed generated with a variety of length scales. In this simulation the pipeline is 'laid' onto the seabed, leading to the formation of 'natural' initiation points for scour. The distribution and spacing of the initiation points (which are a function of the pipeline bending stiffness, tension and seabed roughness) lead to different rates of pipeline lowering and stability. The resulting model may be used within a probabilistic framework to estimate changes to pipeline stability resulting from sediment mobility and scour.

Original languageEnglish
DOIs
Publication statusPublished - 1 Jan 2018
EventASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2018 - Madrid Marriott Auditorium Hotel & Conference Centre, Madrid, Spain
Duration: 17 Jun 201822 Jun 2018
https://www.asme.org/events/omae

Conference

ConferenceASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2018
Abbreviated titleOMAE 2018
CountrySpain
CityMadrid
Period17/06/1822/06/18
Internet address

Fingerprint

Submarine pipelines
Scour
Pipelines
Sediments
Surface roughness
Stiffness

Cite this

Draper, S., Griffiths, T., Cheng, L., White, D., & An, H. (2018). Modelling changes to submarine pipeline embedment and stability due to pipeline scour. Abstract from ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2018, Madrid, Spain. https://doi.org/10.1115/OMAE2018-77985
Draper, Scott ; Griffiths, Terry ; Cheng, Liang ; White, David ; An, Hongwei. / Modelling changes to submarine pipeline embedment and stability due to pipeline scour. Abstract from ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2018, Madrid, Spain.
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title = "Modelling changes to submarine pipeline embedment and stability due to pipeline scour",
abstract = "In this paper a beam bending model is combined with existing predictive formulas for pipeline scour to study changes to pipeline stability during scour and lowering. The model is introduced and demonstrated for a range of simplified conditions, including scour-induced lowering of a pipeline resulting from multiple uniformly spaced scour initiation points. The model is then used with a synthetic seabed generated with a variety of length scales. In this simulation the pipeline is 'laid' onto the seabed, leading to the formation of 'natural' initiation points for scour. The distribution and spacing of the initiation points (which are a function of the pipeline bending stiffness, tension and seabed roughness) lead to different rates of pipeline lowering and stability. The resulting model may be used within a probabilistic framework to estimate changes to pipeline stability resulting from sediment mobility and scour.",
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Draper, S, Griffiths, T, Cheng, L, White, D & An, H 2018, 'Modelling changes to submarine pipeline embedment and stability due to pipeline scour' ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2018, Madrid, Spain, 17/06/18 - 22/06/18, . https://doi.org/10.1115/OMAE2018-77985

Modelling changes to submarine pipeline embedment and stability due to pipeline scour. / Draper, Scott; Griffiths, Terry; Cheng, Liang; White, David; An, Hongwei.

2018. Abstract from ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2018, Madrid, Spain.

Research output: Contribution to conferenceAbstract

TY - CONF

T1 - Modelling changes to submarine pipeline embedment and stability due to pipeline scour

AU - Draper, Scott

AU - Griffiths, Terry

AU - Cheng, Liang

AU - White, David

AU - An, Hongwei

PY - 2018/1/1

Y1 - 2018/1/1

N2 - In this paper a beam bending model is combined with existing predictive formulas for pipeline scour to study changes to pipeline stability during scour and lowering. The model is introduced and demonstrated for a range of simplified conditions, including scour-induced lowering of a pipeline resulting from multiple uniformly spaced scour initiation points. The model is then used with a synthetic seabed generated with a variety of length scales. In this simulation the pipeline is 'laid' onto the seabed, leading to the formation of 'natural' initiation points for scour. The distribution and spacing of the initiation points (which are a function of the pipeline bending stiffness, tension and seabed roughness) lead to different rates of pipeline lowering and stability. The resulting model may be used within a probabilistic framework to estimate changes to pipeline stability resulting from sediment mobility and scour.

AB - In this paper a beam bending model is combined with existing predictive formulas for pipeline scour to study changes to pipeline stability during scour and lowering. The model is introduced and demonstrated for a range of simplified conditions, including scour-induced lowering of a pipeline resulting from multiple uniformly spaced scour initiation points. The model is then used with a synthetic seabed generated with a variety of length scales. In this simulation the pipeline is 'laid' onto the seabed, leading to the formation of 'natural' initiation points for scour. The distribution and spacing of the initiation points (which are a function of the pipeline bending stiffness, tension and seabed roughness) lead to different rates of pipeline lowering and stability. The resulting model may be used within a probabilistic framework to estimate changes to pipeline stability resulting from sediment mobility and scour.

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U2 - 10.1115/OMAE2018-77985

DO - 10.1115/OMAE2018-77985

M3 - Abstract

ER -

Draper S, Griffiths T, Cheng L, White D, An H. Modelling changes to submarine pipeline embedment and stability due to pipeline scour. 2018. Abstract from ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2018, Madrid, Spain. https://doi.org/10.1115/OMAE2018-77985