Modelling Changes to Submarine Pipeline Embedment and Stability due to Pipeline Scour

Draper, Scott; Griffiths, Terry; Cheng, Liang; White, David; An, Hongwei

doi:10.1115/omae2018-77985

Cited by 3 publications

(5 citation statements)

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“…3. An illustration of practical methods for modelling to pipeline embedment and stability due to pipeline scour (Draper et al, 2018a). 4.…”

Section: Stablepipe Methods Developmentmentioning

confidence: 99%

Contemporary marine science, its utility and influence on regulation and government policy

2024

Frontiers Research Topics

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Frontiers is more than just an open access publisher of scholarly articles: it is a pioneering approach to the world of academia, radically improving the way scholarly research is managed. The grand vision of Frontiers is a world where all people have an equal opportunity to seek, share and generate knowledge. Frontiers provides immediate and permanent online open access to all its publications, but this alone is not enough to realize our grand goals. Frontiers journal seriesThe Frontiers journal series is a multi-tier and interdisciplinary set of openaccess, online journals, promising a paradigm shift from the current review, selection and dissemination processes in academic publishing. All Frontiers journals are driven by researchers for researchers; therefore, they constitute a service to the scholarly community. At the same time, the Frontiers journal series operates on a revolutionary invention, the tiered publishing system, initially addressing specific communities of scholars, and gradually climbing up to broader public understanding, thus serving the interests of the lay society, too. Dedication to qualityEach Frontiers article is a landmark of the highest quality, thanks to genuinely collaborative interactions between authors and review editors, who include some of the world's best academicians. Research must be certified by peers before entering a stream of knowledge that may eventually reach the public -and shape society; therefore, Frontiers only applies the most rigorous and unbiased reviews. Frontiers revolutionizes research publishing by freely delivering the most outstanding research, evaluated with no bias from both the academic and social point of view. By applying the most advanced information technologies, Frontiers is catapulting scholarly publishing into a new generation. What are Frontiers Research Topics?Frontiers Research Topics are very popular trademarks of the Frontiers journals series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area.

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“…3. An illustration of practical methods for modelling to pipeline embedment and stability due to pipeline scour (Draper et al, 2018a). 4.…”

Section: Stablepipe Methods Developmentmentioning

confidence: 99%

Contemporary marine science, its utility and influence on regulation and government policy

2024

Frontiers Research Topics

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“…3. An illustration of practical methods for modelling changes to submarine pipeline embedment and stability due to pipeline scour (Draper et al, 2018a). 4.…”

Section: Stablepipe Methods Developmentmentioning

confidence: 99%

“…The key design and analysis steps are set out in detail in Draper et al (2018a) and summarized in Figure 10 with the key elements being to:…”

Section: Stablepipe Methods Developmentmentioning

confidence: 99%

“…While this is acknowledged in F109 Section 8.5, F109 does not provide any useful design method guidance but instead refers to Griffiths et al (2018d). This reference describes the extensive research program which has been completed through the STABLEpipe JIP, using the UWA recirculating O-tube (Cheng et al, 2014) as a transformational research tool in the development of a new design guideline which has now been co-developed with DNV using the design methods described by Draper et al (2018a); Draper et al (2018b). The STABLEpipe guideline has been used on a number of projects and remains the most thorough DNVendorsed description on how to design pipelines on erodible seabeds…”

Section: Stable Pipelines On An Unstable Seabedmentioning

confidence: 99%

“…When this is combined with the much smaller L cr typical of cables, the STABLEpipe method works profoundly well to capture benefits to the on-bottom stability of cables. Scour initiation, span growth and umbilical sinking for 'close' initiation points (Draper et al, 2018a). The plot shows the evolution of seabed morphodynamics from the initiation of scour at points along the pipe followed by longitudinal and vertical deepening of the scour span through to bearing collapse of the span shoulders leading to enhanced far-field embedment of the pipe.…”

Section: Stablepipe Relevance To Cablesmentioning

confidence: 99%

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The offshore renewables industry may be better served by new bespoke design guidelines than by automatic adoption of recommended practices developed for oil and gas infrastructure: A recommendation illustrated by subsea cable design

Griffiths,

Draper,

Cheng

et al. 2023

Front. Mar. Sci.

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IntroductionThere is an emerging need for the offshore renewable industry to have their own bespoke design guidelines because the associated projects and offshore facilities differ in fundamental ways to oil and gas facilities. Offshore renewable energy (ORE) facilities have already surpassed the numbers of installed facilities in the oil and gas industry by an order of magnitude and demand is forecast to continue growing exponentially. In addition ORE facilities often have different response characteristics and limit states or failure modes as well as profoundly different risk and consequence profiles given they are generally uncrewed and do not contain explosive hydrocarbon fluids which might be released into the environment. Therefore, the purpose of this paper is to advocate for licensing bodies and regulators (such as the various national PEL 114 committees) to challenge the process of automatic adoption of oil and gas design processes, while pushing for offshore renewables to be treated differently, when appropriate, with more relevant and applicable guidance.MethodsTo support this argument we present new bespoke design guidance developed for subsea cables based on specific modes of cable behaviour, which often differ from pipelines. We also show worked examples from recent project experience. The results from on-bottom stability analyses of a set of cables are compared between conventional oil and gas guidance following DNV-RP-F109 versus the stability using cable-optimised approaches.ResultsThe outcomes from the ‘conventional’ oil and gas results are not simply biased compared to cable-optimised design methods, with a trend of being either conservative or unconservative. Instead, the results of the two methods are very poorly correlated. This shows that the oil and gas approach isn't simply biased when applied to cables, but is instead unreliable because it doesn't capture the underlying failure conditions. These analytical comparisons are supported by field observation - the ocean doesn't lie, and makes short work of any anthropogenic structures which are designed with inadequate appreciation of the real world conditions.DiscussionTo support the rapid growth of ORE, we should therefore actively pursue opportunities to rewrite the design rules and standards, so that they better support the specific requirements of ORE infrastructure, rather than legacy oil and gas structures. With more appropriate design practices, we can accelerate the roll out of ORE to meet net zero, and mitigate the climate crisis.

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A mechanical model of axial and circumferential bidirectional deformation for large thin-walled pipes in the process of continuous and synchronous calibration of roundness and straightness by three rollers

Huang

Sun

2021

Int J Adv Manuf Technol

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Modelling Changes to Submarine Pipeline Embedment and Stability due to Pipeline Scour

Cited by 3 publications

References 0 publications

Contemporary marine science, its utility and influence on regulation and government policy

Contemporary marine science, its utility and influence on regulation and government policy

The offshore renewables industry may be better served by new bespoke design guidelines than by automatic adoption of recommended practices developed for oil and gas infrastructure: A recommendation illustrated by subsea cable design

A mechanical model of axial and circumferential bidirectional deformation for large thin-walled pipes in the process of continuous and synchronous calibration of roundness and straightness by three rollers

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