Lay Barge Pipeline Stresses

Sub-sea oil and gas pipelines are often fabricated and laid from a vessel known as a lay barge. In order to minimise the bending stresses that occur during installation, the barge would apply a forward load to the pipeline, usually by the use of forward anchors. The welded sections of pipe are then fed aft through tensioners and over a curved structure called a ‘stinger’.

Best Solution developed a simple tool for use with finite element software to find the optimum forward load for a given pipe geometry and sea bed depth. The forward load which minimised pipeline stress, and consequent peak stress and its location could be found efficiently.

“Best Solution can support engineers engaged in their own development programmes. We can provide advice and guidance on simulation technique, or more specific coaching on design methods for electromagnetic devices, materials, test and measurement.”

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