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Altantia Offshore Ltd., Houston, TX, USA. Independence Hub - MC920 SCR Detailed Design: Riser Design Based & Methodology. MCS, Advanced Engineering Solutions, 2005. A Nontechnical Guide, 2nd Ed., PennWell, USA. Deepwater Petroleum: Exploration & Production. Leffler, W.L., Pattarozzi, R., Sterling, G., 2011. SCR Modelling and Analysis with a Deepwater Platform, Houston, TX, USA. Offhosre Standard F101, Det Norske Veritas, Oslo, Norway. Offshore Technology Conference, TX, USA.ĭet Norske Veritas (DNV), 2007. Characteristics of Ultra-deepwater Pipelay Analysis. API Bulletin 2INT-MET, American Petroleum Institute, Washington, USA.īai, Y., Bai, Q., 2005.
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Interim Guidance on Hurricane Conditions in the Gulf of Mexico. Recommended Practice 2RD, American Petroleum Institute, Washington, USA.Īmerican Petroleum Institute (API), 2007. Design of Risers for Floating Production Systems (FPSs) and Tension-leg Platforms (TLPs). The weight of the SCR and internal contents affected the maximum stress of the SCR more than the HOA and vertical soil stiffness, because the weight of the SCR, including the internal contents, was directly related to its tensile stress.Īmerican Petroleum Institute (API), 1998. Furthermore, the tensile stress governed the total stress of the SCRs, whereas the bending stress governed the total stress at the TDZ. Based on a deepwater SCR design example, it was found that the maximum stress of an SCR occurred at a hang-off location under parallel loading direction with respect to the riser plane, except for a wave dominant dynamic survival loading condition. The structural behavior of a deepwater SCR under various environmental loading conditions was investigated, and a sensitivity analysis was conducted with respect to various parameters such as the SCR weight, weight of the internal contents, hang-off angle (HOA), and vertical soil stiffness. Thus, the objective of this study was to develop an overall analysis procedure for a deepwater SCR. However, deepwater SCR analysis is a new research area. Therefore, a systematic strength analysis is required for the proper design of an SCR.
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The design challenges when attempting to obtain sufficient strength for a deepwater steel catenary riser (SCR) include high stress near the hang-off location, an elevated beam-column buckling load due to the effective compression in the touchdown zone (TDZ), and increased stress and low-cycle fatigue damage in the TDZ.