Entries by Admin Assistant

Jas, E., O’Brien, D., Fricke, R., Gillen, A., Cheng, L., White, D., Palmer, A., (2012) “Pipeline Stability Revisited”, The Journal of Pipeline Engineering

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 […]

The Trenchless Trend

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, […]

O’Brien, D., McMaster, S., Ryan, J., Scholtz, D., (2012) “On-Bottom Stability Analysis for a Pipeline on a Mobile Seabed”, 31st International Conference on Ocean, Offshore and Arctic Engineering, Brazil, American Society for Mechanical Engineers (ASME)

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 […]

Jas, E., Campbell, D., Ryan, J., Chamizo, D., (2012) “ Rock Berm Design for Pipeline Stability” 31st International Conference on Ocean, Offshore and Arctic Engineering, Brazil, American Society for Mechanical Engineers (ASME)

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 […]