Abstract
Static and fatigue assessments of subsea production equipment used in deepwater oil and gas applications are presented in this paper. Membrane, axial and radial stresses are calculated on a thick-walled cylinder subjected to internal and external pressure loads using the Lame` solution. The fatigue life cycles of the pressure component are calculated per the linear elastic fracture mechanics (LEFM) approach of the American standard ASME Section VIII Division 3 Article KD-4 and per the British standard BS 7910. The results discussed in this paper provide new insight into the much debated issue of increasing the service pressure of subsea equipment above the nameplate rating by taking credit for the ambient seawater pressure at depth.
Published Version
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