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A parametric design study for a semi/SCR system in Northern North Sea

Xia, J. and Das, P.K. and Karunakaran, D. (2008) A parametric design study for a semi/SCR system in Northern North Sea. Ocean Engineering, 35 (17-18). pp. 1686-1699. ISSN 0029-8018

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Abstract

In recent years, offshore reservoirs have been developed in deeper and deeper water environments. Steel catenary risers (SCRs) are being considered in deepwater development such as Northern North Sea. SCRs used in conjunction with a semi-submersible or floating production, storage and offloading (FPSO) in deepwater harsh environments present significant design challenges. The large vertical motions at the semi or FPSO induce severe riser response, which results in difficulty meeting strength and fatigue criteria at the hang off and touch down point locations. To improve the understanding of SCR behaviour and increase the confidence in the design of such systems in deepwater harsh environments, a parametric study on a SCR connected to a semi-submersible was carried out in this paper to deal with the factors that mainly influence the loading condition and fatigue life of the riser. Weight-optimized configurations were applied during the course of riser design. Riflex combined with DeepC was the primary analysis tool used for the long-term response of the nonlinear SCR structure simulations, which requires a large amount of computer time. Hence, the parameters affecting the efficiency and accuracy of the simulations have also been studied during the analysis process.

Item type: Article
ID code: 19350
Keywords: steel catenary riser, parametric study, weight-optimized design, fatigue analysis, Riflex, Naval architecture. Shipbuilding. Marine engineering, Ocean Engineering, Environmental Engineering
Subjects: Naval Science > Naval architecture. Shipbuilding. Marine engineering
Department: Faculty of Engineering > Naval Architecture and Marine Engineering
Related URLs:
    Depositing user: Strathprints Administrator
    Date Deposited: 02 Jun 2010 10:18
    Last modified: 19 Aug 2014 13:51
    URI: http://strathprints.strath.ac.uk/id/eprint/19350

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