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Keywords: catenary riser
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Proceedings Papers

Paper presented at the The 27th International Ocean and Polar Engineering Conference, June 25–30, 2017
Paper Number: ISOPE-I-17-024
... ABSTRACT Steel catenary riser is a fundamental configuration in ocean engineering since its wake may be rich of flow dynamics due to the flow interference between the upstream and downstream parts when it is aligned with the oncoming flows. In this paper, we numerically investigated a three...
Proceedings Papers

Paper presented at the The Twenty-fourth International Ocean and Polar Engineering Conference, June 15–20, 2014
Paper Number: ISOPE-I-14-252
... frequencies and their corresponding mode shapes are determined by solving the eigenvalue problem incorporating with the direct iteration technique. The examples of large amplitude free vibration of the steel catenary riser with various horizontal offsets and top tensions are also presented in this paper...
Proceedings Papers

Paper presented at the The Twenty-fourth International Ocean and Polar Engineering Conference, June 15–20, 2014
Paper Number: ISOPE-I-14-224
... Abstract In this paper, the structural performance of deepwater lazy-wave steel catenary risers (LWSCRs) connected to a FPSO is investigated by using hull/mooring/riser coupled dynamic analysis program. Conventional deepwater steel catenary risers (SCRs)connected to the same FPSO hull exhibit...
Proceedings Papers

Paper presented at the The Twenty-third International Offshore and Polar Engineering Conference, June 30–July 5, 2013
Paper Number: ISOPE-I-13-063
... ABSTRACT Steel lazy-wave risers (SLWR) have gained popularity as a viable solution to improve fatigue and strength performance at the touchdown zone of a simple catenary riser. With the objective to provide technical reference for a lazy-wave shaped riser, this paper focuses on the study...
Proceedings Papers

Paper presented at the The Twenty-second International Offshore and Polar Engineering Conference, June 17–22, 2012
Paper Number: ISOPE-I-12-529
... in such configurations such as "sandwich structures" and one possible application for this concept is related to the control and the reduction of vibrations in steel catenary risers. The objective of this study is to deepen knowledge about the behaviour of sandwich structures to obtain information in order to optimize...
Proceedings Papers

Paper presented at the The Twenty-second International Offshore and Polar Engineering Conference, June 17–22, 2012
Paper Number: ISOPE-I-12-212
..., Greece ABSTRACT The present study aims at simulating the internal, incompressible, turbulent flow of a catenary riser and evaluating the flow effects on its structural response. Firstly, the static equilibrium problem is considered to obtain the static geometrical configuration of the structure which...
Proceedings Papers

Paper presented at the The Twenty-first International Offshore and Polar Engineering Conference, June 19–24, 2011
Paper Number: ISOPE-I-11-135
... ABSTRACT: This paper aims to present the critical top tension of an extensible catenary riser. The extensible elastica theory and the virtual workenergy principle are used to develop the variational model formulation. The deformation of riser is described in view of total Lagrangian coordinate...
Proceedings Papers

Paper presented at the The Twentieth International Offshore and Polar Engineering Conference, June 20–25, 2010
Paper Number: ISOPE-I-10-018
... ABSTRACT This paper presents an efficient optimization strategy for deepwater risers design under fatigue life constraints. As water depth is increasing, the fatigue damage becomes a critical issue for the steel catenary risers (SCRs) due to the dynamic excitation caused by ocean environmental...
Proceedings Papers

Paper presented at the The Eighteenth International Offshore and Polar Engineering Conference, July 6–11, 2008
Paper Number: ISOPE-I-08-397
... Effects of the Interaction with the Seafloor on the Fatigue Life of a SCR Ali Nakhaee and Jun Zhang Ocean Engineering Program, Zachry Department of Civil Engineering, Texas A&M University College Station, Texas, USA . ABSTRACT The fatigue life of a Steel Catenary Riser (SCR) near its touch-down...
Proceedings Papers

Paper presented at the The Seventeenth International Offshore and Polar Engineering Conference, July 1–6, 2007
Paper Number: ISOPE-I-07-160
... normal mode riser modal variable time history fixed-fixed riser phase portrait invariant manifold modal shape catenary riser nonlinear normal mode amplitude fixed-moored riser mazzilli equation nonlinear mode The present paper allows for further understanding of riser dynamics...
Proceedings Papers

Paper presented at the The Fourteenth International Offshore and Polar Engineering Conference, May 23–28, 2004
Paper Number: ISOPE-I-04-270
... ABSTRACT This paper describes a study on the application of analytical methods for evaluating the response of Steel Catenary Risers (SCR) subjected to dynamic loading. In the first part of the paper, equations of equilibrium are derived using a linear theory, based on the assumption of small...
Proceedings Papers

Paper presented at the The Thirteenth International Offshore and Polar Engineering Conference, May 25–30, 2003
Paper Number: ISOPE-I-03-092
... ABSTRACT This paper describes analytical methods that were developed to evaluate the response of Steel Catenary Risers (SCR) subjected to static loading such as current. In the first part of the paper, equations of equilibrium are derived using a linear theory, based on the assumption of small...
Proceedings Papers

Paper presented at the The Eleventh International Offshore and Polar Engineering Conference, June 17–22, 2001
Paper Number: ISOPE-I-01-158
... ABSTRACT The oil industry, during the last years, has focused efforts to identify and develop economical and technically feasible solutions for production of oil and gas from deep water fields. The Steel Catenary Riser (SCR) appears as an alternative to flexible risers used in gas and oil...
Proceedings Papers

Paper presented at the The Tenth International Offshore and Polar Engineering Conference, May 28–June 2, 2000
Paper Number: ISOPE-I-00-120
... ABSTRACT Steel catenary risers are an attractive solution from an economical viewpoint. However they are not always feasible and their feasibility must be verified case by case, considering both extreme and long-term loads. One of the critical portions of the riser is the region near its top...
Proceedings Papers

Paper presented at the The Tenth International Offshore and Polar Engineering Conference, May 28–June 2, 2000
Paper Number: ISOPE-I-00-121
... a carrier pipe. bundle riser bundle riser part operation upstream oil & gas tow method christian knutsen halliburton riser bundle sleeve pipe input power catenary riser riser stiffness catenary method fatigue life template curvature installation floater production unit pipe...
Proceedings Papers

Paper presented at the The Tenth International Offshore and Polar Engineering Conference, May 28–June 2, 2000
Paper Number: ISOPE-I-00-287
... ABSTRACT Engineering analyses of vortex-induced vibration (VIV) of steel catenary risers (SCR) are presently performed either by experimental tests in model scale or by semi-empirical numerical prediction tools which are depending on experimental data to obtain force coefficients...
Proceedings Papers

Paper presented at the The Ninth International Offshore and Polar Engineering Conference, May 30–June 4, 1999
Paper Number: ISOPE-I-99-154
... WKB approximate solution is derived for the general riser-like problem, given the tension function along the length. A simple formula for the natural frequencies and eigenmodes of a catenary riser under no current is then derived from WKB general solution. Compared to Bessel's approximations...

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