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

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.

[1]  Yoshiki Nishi.  Static analysis of axially moving cables applied for mining nodules on the deep sea floor , 2012 .

[2]  Gautam Chaudhury,et al.  Design,Testing, and Installation of Steel Catenary Risers , 1999 .

[3]  Vimal Singh,et al.  Perturbation methods , 1991 .

[4]  Yong Bai,et al.  Subsea Pipelines and Risers , 2005 .

[5]  W. Marsden.  I and J , 2012 .

[6]  Ioannis K. Chatjigeorgiou,et al.  A finite differences formulation for the linear and nonlinear dynamics of 2D catenary risers , 2008 .

[7]  Massimo Callegari,et al.  Simple analytical models for the J-lay problem , 2005 .

[8]  R. Stephenson.  A and V , 1962, The British journal of ophthalmology.

[9]  Frans Kopp,et al.  Design And Installation Of Auger Pipelines , 1994 .

[10]  X. Zhou,et al.  Installation Method Evaluation of Export SCRs , 2001 .

[11]  Avelino Samartín,et al.  A nonlinear analysis of laying a floating pipeline on the seabed , 2006 .

[12]  T. K. Datta.  Abandonment and recovery solution of submarine pipelines , 1982 .

[13]  邢静忠,et al.  Nonlinear Analysis of Submarine Pipelines During Single Point Lifting , 2002 .

[14]  D. R. Rutledge,et al.  Stiffened Catenary Calculations in Pipeline Laying Problem , 1968 .

[15]  Xing Jing.  Nonlinear analysis of submarine pipelines during single point lifting , 2002 .

[16]  Alan G. Davies.  Transient effects in wave-current boundary layer flow , 1991 .

[17]  Vincenzo Mallardo,et al.  A refined analytical analysis of submerged pipelines in seabed laying , 1999 .

[18]  D. Jung,et al.  A finite element method for dynamic analysis of long slender marine structures under combined parametric and forcing excitations , 2002 .

[19]  J. van der Graaf,et al.  Field Experience With the Construction of Large Diameter Steel Catenary Risers in\ Deep Water , 2005 .

[20]  Chen Jing-hao.  Research on several mathematical models of offshore pipe lifting or lowering by one point , 2013 .