As part of his PhD study, Dr Bassem Youssef, who is now employed at Atteris as a project engineer, developed a unique pipeline on-bottom stability simulation program, which won the Australian Gas Innovation Award Commendation in 2012. The Australian Pipeliner spoke with Dr Youssef to find out more about his research and why it is […]
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Dr. Bassem Youssef, Atteris, Australia, discusses the latest developments in pipeline on-bottom stability design.
THE STABILITY assessment of the 40-in North Rankin A trunkline, operated by Woodside Energy Ltd, has provided better insight into fluid-soil-pipe interactions during extreme storm events. The resulting conclusion of the work is that the trunkline, a major subsea natural gas artery in Australia’s Northwest Shelf since its installation in 1982, can continue to be […]
Pipeline shore crossings are often one of the most complex and technically challenging elements of any subsea development. Challenges are compounded by shallow waters, which are typically subject to breaking waves, storm surge, and tidal movements. The presence of complex geological features, as well as difficult site accessibility can also complicate matters. Close to shore, […]
This paper describes the work performed to assess the stability of an existing pipeline off the North Western coast of Western Australia. Originally, the pipeline was post-trenched (for stability), by ploughing. The plough formed an open v-shaped trench below the pipeline. Several years after the pipeline was installed, a severe cyclone caused significant changes to […]
Stabilizing large diameter natural gas pipelines on the seabed against extreme hydrodynamic loading conditions has proven to be challenging in the northwest of Australia. Tropical storms, which affect the area annually between November and April, can generate wave heights exceeding 30 m and storm steady state currents of 2 m/s or more. Consequently, in shallow […]