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Updated: Apr 19, 2026
09:37
Visualization of Flow Field Around a Vibrating Pipeline Within an Equilibrium Scour Hole
Published on: August 26, 2019
6.2K
Stability of subsea pipelines during large storms.
Scott Draper1, Hongwei An2, Liang Cheng2
1Centre for Offshore Foundation Systems, 35 Stirling Hwy, Crawley, Perth, WA 6009, Australia School of Civil, Environmental and Mining Engineering, 35 Stirling Hwy, Crawley, Perth, WA 6009, Australia scott.draper@uwa.edu.au.
Summary
Pipeline stability during storms is crucial. This study shows how seabed mobility and pipeline lowering rates during storm development affect subsea pipeline embedment and overall stability in sandy conditions.
Area of Science:
- * Marine engineering
- * Coastal geomorphology
- * Hydrodynamics
Background:
- * Subsea pipeline stability is critical for safety and reliability in harsh metocean conditions.
- * Current industry guidelines lack methods to leverage seabed mobility for pipeline self-burial.
- * Sandy seabeds offer potential for pipeline lowering and self-burial during storms.
Purpose of the Study:
- * To investigate pipeline stability changes during large storm events.
- * To analyze the impact of seabed mobility on subsea pipelines.
- * To understand the influence of storm development on pipeline scour and embedment.
Main Methods:
- * Experimental modeling of pipeline scour.
- * Analysis of pipeline scour and lowering rates during simulated storm conditions.
- * Comparison of near-bed velocity increase rates with pipeline scour and lowering rates.
Main Results:
- * Scour is inevitable on erodible beds as storm velocities increase.
- * The rate of pipeline lowering is influenced by storm velocities, lowering mechanisms, and pipeline properties.
- * The relative rates of velocity increase and pipeline lowering significantly impact pipeline embedment and stability during storm initial development.
Conclusions:
- * Pipeline embedment and stability are dynamically influenced by the interplay between storm intensification and seabed-pipeline interaction.
- * Understanding these dynamic processes is key to improving subsea pipeline design in storm-prone areas.
- * Experimental modeling provides crucial insights into complex scour and stability phenomena.
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