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Submarine pipelines used in the transportation of hydrocarbon in the oil and gas industry are usually subjected to external hydrostatic pressure and compressive stresses resulting in susceptibility to buckling and loss of structural stability. The objective of the present work was to examine influence of wall thickness on eigenvalue buckling load and hydrostatic pressure on ocean depth. Linear buckling analysis was conducted employing finite element method using ANSYS software package and the simulation was conducted varying wall thickness and ocean depth. The investigation showed collapse buckling pressure decreased linearly with ocean water depth but increased with thickness increment. Pipeline buckling failure can be minimized with wall thickness optimization design and selection.

Eigenvalue Buckling Computation and Impact on Pipeline Wall Thickness and Subsea Depth