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Keywords: riser
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Journal Articles
International Journal of Offshore and Polar Engineering 27 (03): 232–238.
Paper Number: ISOPE-17-27-3-232
Published: 01 September 2017
...Robert D. Blevins; Charles S. Coughran; Michael E. Utt; Kamaldev Raghavan Significant riser oscillations were observed during deep-water drilling operations. The riser vibrated at frequencies from below to above the rotation speed of the drill pipe. Laboratory tests of a riser section have been...
Journal Articles
International Journal of Offshore and Polar Engineering 22 (02).
Paper Number: ISOPE-12-22-2-142
Published: 01 June 2012
...Kevin Huang; Hamn-Ching Chen; Chia-Rong Chen This paper studied a vertical riser VIV under sheared current using numerical simulation and presented the results and their comparisons to published experimental data. The riser was made of a 9.63-m brass pipe with an OD of 0.02 m (L/D D 482) and mass...
Journal Articles
International Journal of Offshore and Polar Engineering 20 (01).
Paper Number: ISOPE-10-20-1-007
Published: 01 March 2010
...Yasuhiro Namba; Shotaro Uto; Tadashi Nimura; Kentaroh Kokubun; Takako Kuroda; Tsuyoshi Miyazaki; Yasuyuki Okumura; Masahiko Ozaki Using various cylindrical rigid riser models, top forced oscillation tests have been carried out to study interactions between hung-off risers and an internal fluid. A...
Journal Articles
International Journal of Offshore and Polar Engineering 19 (01).
Paper Number: ISOPE-09-19-1-023
Published: 01 March 2009
...Carlos Alberto Riveros; Tomoaki Utsunomiya; Katsuya Maeda; Kazuaki Itoh ABSTRACT A highly nonlinear response and a self-regulated process are usually associated with the dynamic response of a flexible riser. In addition, the formation of vortices shedding from the riser related to Vortex-Induced...
Journal Articles
International Journal of Offshore and Polar Engineering 18 (01).
Paper Number: ISOPE-08-18-1-035
Published: 01 March 2008
...Carlos Alberto Riveros; Tomoaki Utsunomiya; Katsuya Maeda; Kazuaki Itoh ABSTRACT A statistical pattern recognition technique based on time series analysis of vibration data is presented in this paper. A 20-m riser model experimentally validated is used for the numerical implementation of this...
Journal Articles
International Journal of Offshore and Polar Engineering 16 (01).
Paper Number: ISOPE-06-16-1-041
Published: 01 March 2006
... operation quantity pipeline pigging North Sea glycol pipeline 42-in pipeline Statoil batch hydrocarbon gas Methanol Discharge riser Norway pipeline project subsea pipeline International Journal of Offshore and Polar Engineering (ISSN 1053-5381) Copyright © by The International Society of...
Journal Articles
International Journal of Offshore and Polar Engineering 16 (01).
Paper Number: ISOPE-06-16-1-033
Published: 01 March 2006
...E. Fontaine; J.P. Morel; Y.M. Scolan; T. Rippol Wake Induced Oscillations (WIO) and amplification of Vortex Induced Vibration (VIV) are studied for 2 risers in tandem configuration. The criticality of riser interference is first investigated in term of nondimensional numbers for different types of...
Journal Articles
International Journal of Offshore and Polar Engineering 15 (04).
Paper Number: ISOPE-05-15-4-257
Published: 01 December 2005
... international journal armour vector Artificial Intelligence aircraft-floating structure-water interaction system struct dyn structure interaction Zienkiewicz equation interaction airplane air transportation interaction problem riser dynamic analysis suspension unit International Journal of...
Journal Articles
International Journal of Offshore and Polar Engineering 15 (04).
Paper Number: ISOPE-05-15-4-274
Published: 01 December 2005
...Hidetaka Senga; Wataru Koterayama A numerical scheme is developed to simulate the time series of 3-dimensional dynamics of a flexible riser moving irregularly at its top end. To validate the accuracy of this numerical scheme, some cases were compared with the experimental results. In experiments...
Journal Articles
International Journal of Offshore and Polar Engineering 15 (04).
Paper Number: ISOPE-05-15-4-282
Published: 01 December 2005
...Basile Bonnemaire A finite element model of a riser protected from ice impacts by an armour is described. The riser is connected to a tanker via a turret arrangement. A steep-wave configuration at the 300-m water depth is then considered. Numerical simulations are performed to study the influence...
Journal Articles
International Journal of Offshore and Polar Engineering 14 (02).
Paper Number: ISOPE-04-14-2-110
Published: 01 June 2004
...Y.P. Hong; Wataru Koterayama This paper presents a numerical simulation scheme for the dynamics of a highly flexible riser, and the validation of the scheme by forced oscillation experiments. Governing equations of motion for riser dynamics are derived using Hamilton's principle, and nonlinear...
Journal Articles
International Journal of Offshore and Polar Engineering 12 (01).
Paper Number: ISOPE-02-12-1-031
Published: 01 March 2002
... far wake field of the upstream cylinder. It is found that the fluid-elastic instability of the downstream cylinder can be caused by either a Hopf or a stationary bifurcation, depending upon its position relative to the upstream cylinder. INTRODUCTION For a deepwater vertical riser cluster, one of the...
Journal Articles
International Journal of Offshore and Polar Engineering 8 (04).
Paper Number: ISOPE-98-08-4-303
Published: 01 December 1998
...C.P. Pesce; J.A.P. Aranha; C.A. Martins; O.G.S. Ricardo; S. Silva ABSTRACT Recently, the dynamics of catenary risers, in the absence of shock conditions against the soil, has been studied in the vicinity of the touch down point (TDP) by means of asymptotic methods and boundary-layer theory (Aranha...
Journal Articles
International Journal of Offshore and Polar Engineering 7 (04).
Paper Number: ISOPE-97-07-4-293
Published: 01 December 1997
...J.A.P. Aranha; C.A. Martins; C.P. Pesce ABSTRACT This paper introduces an analytical approximation, of a boundary layer type, for the dynamic bending moment at the touchdown point of a catenary riser. The approximation is based on a quasi-linear frequency domain solution of a cable ( EJ = 0), the...
Journal Articles
International Journal of Offshore and Polar Engineering 6 (04).
Paper Number: ISOPE-96-06-4-294
Published: 01 December 1996
...Ingrid Schjølberg; Olav Egeland ABSTRACT This paper describes the control of a system consisting of a thrust unit connected to a surface vessel by means of a marine cable, riser or other similar slender marine structure. Motion only in the lateral direction has been considered. Position and...
Journal Articles
International Journal of Offshore and Polar Engineering 3 (04).
Paper Number: ISOPE-93-03-4-299
Published: 01 December 1993
...Rafik Boubenider; John L. Tassoulas; José M. Roesset ABSTRACT: In this paper, the development of a finite element suitable for the three-dimensional, dynamic analysis of flexible marine risers is summarized. The conventional version of the element is described along with hybrid axial and torsional...
Journal Articles
International Journal of Offshore and Polar Engineering 2 (04).
Paper Number: ISOPE-92-02-4-241
Published: 01 December 1992
... concept. Of primary concern are the functional design, and operation requirements of the well system 10 deep water and the associated Impact on the overall production system selection. In particular, technical issues involved in the design, analysis, and installation of various riser concepts are...
Journal Articles
International Journal of Offshore and Polar Engineering 2 (02).
Paper Number: ISOPE-92-02-2-087
Published: 01 June 1992
... characteristics are reproduced faithfully, and the strength and fatigue life of the individual tethers are determined accurately. The necessity to simulate the various physical properties leads to complicated composite designs. The construction of typical model tendons and risers is discussed. The model testing...
Journal Articles
International Journal of Offshore and Polar Engineering 1 (04).
Paper Number: ISOPE-91-01-4-300
Published: 01 December 1991
...Tseng Huang; Qing Liang Kang ABSTRACT: A formulation to analyze the large displacement problem of a marine riser with two unequal principal moments of inertia of cross sections in three-dimensional space is presented. The method involves the utilization of the equilibrium equations in the axial...
Journal Articles
International Journal of Offshore and Polar Engineering 1 (03).
Paper Number: ISOPE-91-01-3-167
Published: 01 September 1991
... type of instabilities. Discussed in some detail is a design procedure for application of the damper to three distinct situations: full-scale smokestacks undergoing vortex resonance; wave-excited oscillations of offshore marine risers; and horizontal pipelines. The information should prove useful...

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