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Journal of Applied Mathematics
Volume 2014, Article ID 801781, 9 pages
http://dx.doi.org/10.1155/2014/801781
Research Article

An Analytical Solution by HAM for Nonlinear Simulation of Deepwater SCR Installation

1Offshore Oil/Gas Research Center, China University of Petroleum, Beijing 102249, China
2Offshore Oil Engineering Co., Ltd., Tianjin 300452, China

Received 10 December 2013; Revised 29 May 2014; Accepted 5 June 2014; Published 2 July 2014

Academic Editor: Aderemi Oluyinka Adewumi

Copyright © 2014 Yi Wang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Steel catenary riser (SCR) is a cost-effective riser system that is widely used in deepwater offshore oilfields development. During SCR J-lay installation, the movement of pull-head must be carefully controlled to ensure riser safety. Since the SCR installation path calculation through numerical simulation software is usually time-consuming, this paper has established a mechanical model for SCR installation by making use of homotopy analysis method (HAM) to simplify its analytical solution, and dimensional analysis was considered in making initial guess solution. Based on this analytical solution, a program within the framework of MATLAB was developed to predict the two-dimensional riser behavior during installation, and a sensitivity analysis for different values of the control variables was carried out. Engineers may efficiently optimize the installation path by the application of this technique.