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Keywords: ovality
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Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-161
... proceedings engineering upstream oil & gas liner girth weld eigenvalue analysis variation artificial intelligence anomaly imperfection triple point cross-section steel host pipe artic engineering polar engineering conference geometry ovality Proceedings of the Thirty-second (2022...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-482
... manufacturing process ovality plastic deformation compression structural performance influence variable residual stress stress-strain curve collapse strength pipeline external pressure plastic strain midstream oil & gas material model diameter Evaluation of Structural Performance...
Proceedings Papers

Paper presented at the The 27th International Ocean and Polar Engineering Conference, June 25–30, 2017
Paper Number: ISOPE-I-17-665
... the outside diameter and improve the ovality. It is important to measure the circumferential stress vs. strain curve under compression because this curve is one of the dominant factors of collapse pressures. Collapse pressure is an important design factor for oil & gas wells and offshore pipelines. Some...
Proceedings Papers

Paper presented at the The 27th International Ocean and Polar Engineering Conference, June 25–30, 2017
Paper Number: ISOPE-I-17-151
... ABSTRACT The reel-lay method has been used extensively for the installation of subsea pipelines. Plastic deformation associated with reeling may increase the ovality of a pipe, and as a result reduce its collapse capacity. Previous studies have shown that reeling induced ovality for seamless...
Proceedings Papers

Paper presented at the The 26th International Ocean and Polar Engineering Conference, June 26–July 2, 2016
Paper Number: ISOPE-I-16-668
... Abstract Reeling lay or R-lay is a popular technique for effectively installing ERW line pipes in deepwater. This paper explores the ovality and the collapse pressure of HF-ERW line pipes installed by reeling lay. The change of ovality is evaluated by a full-scale bending-unbending test...
Proceedings Papers

Paper presented at the The Twenty-fifth International Ocean and Polar Engineering Conference, June 21–26, 2015
Paper Number: ISOPE-I-15-783
... criterion line for minimum reelable wall thickness. liftoff ovality test pipe pipe ovality measurement wall thickness residual ovality seam weld mismatch orientation piping simulation piping design measurement result mismatch orientation bend cycle average value bend step back tension...
Proceedings Papers

Paper presented at the The Twenty-fifth International Ocean and Polar Engineering Conference, June 21–26, 2015
Paper Number: ISOPE-I-15-784
..., including ovality, eccentricity, compressive stress-strain (SS) curve in the circumferential (C)direction, and residual stress of the test pipes were measured. The collapse pressures were obtained from full-scale collapse tests, finite element analysis (FEA) models with measured profile, and conventional...
Proceedings Papers

Paper presented at the The Twenty-fourth International Ocean and Polar Engineering Conference, June 15–20, 2014
Paper Number: ISOPE-I-14-226
... friction test result end cap effect ovality Interpretation of the South Stream Ring Collapse Test Program Results Ruud Selker INTECSEA Delft, The Netherlands Pedro M.C. Ramos INTECSEA Delft, The Netherlands Ping Liu INTECSEA Delft, The Netherlands ABSTRACT A comprehensive study was conducted...
Proceedings Papers

Paper presented at the The Twenty-third International Offshore and Polar Engineering Conference, June 30–July 5, 2013
Paper Number: ISOPE-I-13-536
... and mechanical pipe parameters are described. Then the influence of relevant pipe parameters on the collapse behavior was analyzed in a parameter study making use of a 3D Finite Element (FE) model of the collapse test. The investigated parameters were: pipe ovality, wall thickness and compressive stress-strain...
Proceedings Papers

Paper presented at the The Twentieth International Offshore and Polar Engineering Conference, June 20–25, 2010
Paper Number: ISOPE-I-10-209
.... Moment capacities of bends were then evaluated using the three criteria: twice elastic slope (TES), 3 % ovality and 0.2% equivalent strain. Moment capacities were then calculated as a function of differential pressure. Actual bending moments in Ormen Lange spoolpieces calculated by simple...
Proceedings Papers

Paper presented at the The Nineteenth International Offshore and Polar Engineering Conference, July 21–26, 2009
Paper Number: ISOPE-I-09-390
... thickness simulation test temperature collapse pressure pipe material clock position plastic deformation ovality Impact of Reel-Laying on Mechanical Pipeline Properties Investigated by Full- and Small-Scale Reeling Simulations Dr. Andreas Meissner, Dr. Marion Erdelen-Peppler Salzgitter Mannesmann...
Proceedings Papers

Paper presented at the The Nineteenth International Offshore and Polar Engineering Conference, July 21–26, 2009
Paper Number: ISOPE-I-09-281
... and ovalization and longitudinal unevenness were considered. Results of FEA show bending deformation in closing- mode bending was lower than that in opening-mode bending. For closing-mode bending, the deformation with the material variation and the geometric imperfections was estimated approximately 50% lower...
Proceedings Papers

Paper presented at the The Eighteenth International Offshore and Polar Engineering Conference, July 6–11, 2008
Paper Number: ISOPE-I-08-395
... high quality welding to be undertaken. It is then transited offshore and installed. installation method proceedings offshore pipeline resistance installation process ovality technip wall thickness guidance plastic deformation diameter limit state requirement fatigue performance...
Proceedings Papers

Paper presented at the The Eighteenth International Offshore and Polar Engineering Conference, July 6–11, 2008
Paper Number: ISOPE-I-08-379
... ovality strain capacity line pipe diameter imperfection strength distribution orientation pipeline evaluation smy midstream oil & gas wall thickness distribution Evaluation of Influence Factors of Compressive Buckling by FE Analysis Hidenori Shitamoto, Hiroyuki Makino, Shuji Okaguchi...
Proceedings Papers

Paper presented at the The Seventeenth International Offshore and Polar Engineering Conference, July 1–6, 2007
Paper Number: ISOPE-I-07-064
... ovality ormen lange midstream oil & gas imperfection misalignment equation offshore pipeline upstream oil & gas Langeled Pipe Capacity vs. Wall Thickness Selection R. Bruschi, L.Vitali, E. Torselletti, D. Zenobi Snamprogetti SpA, Fano (PU), Italy A. Johannessen, R. Holme Statoil ASA...
Proceedings Papers

Paper presented at the The Seventeenth International Offshore and Polar Engineering Conference, July 1–6, 2007
Paper Number: ISOPE-I-07-386
... deck radius controller field joint ovality measurement joint coating coating pipe string tensioner field joint area onboard offshore pipeline acergy falcon pipe field joint coating rig ovality radius controller Limitations of Conventional Bending Rigs to Simulate Pipelay Processes...
Proceedings Papers

Paper presented at the The Seventeenth International Offshore and Polar Engineering Conference, July 1–6, 2007
Paper Number: ISOPE-I-07-334
.... Once confidence in the validity of model had been gained, it was used as a virtual prototype to simulate an installation load (combination of tensile load and bending, as well as contact force between components) which resulted in plastic straining of the steel tubes. During this operation, ovality...
Proceedings Papers

Paper presented at the The Seventeenth International Offshore and Polar Engineering Conference, July 1–6, 2007
Paper Number: ISOPE-I-07-517
... wall thickness requirements are strictly linked to the material specifications. Two parameters are very important for the cross section capacity to sustain the external pressure: the cross section ovality (maximum value of fabrication ovality allowed by DNV OS-F101 is 1.0 and 1.5% at pipe ends...
Proceedings Papers

Paper presented at the The Thirteenth International Offshore and Polar Engineering Conference, May 25–30, 2003
Paper Number: ISOPE-I-03-346
... pipe strain curve mechanical property mpa ovality outer side configuration reservoir characterization numerical simulation collapse test thickness collapse pressure residual stress uoe pipe collapse pressure prediction upstream oil & gas collapse model annular pressure drilling...
Proceedings Papers

Paper presented at the The Twelfth International Offshore and Polar Engineering Conference, May 26–31, 2002
Paper Number: ISOPE-I-02-436
... & gas offshore pipeline simulation specimen strength ovality application steel linepipe requirement collapse strength toughness Development of linepipe for deep-water applications H.-G. Hillenbrand, M.K. Graef Europipe GmbH, Ratingen, Germany J. Groß-Weege, G. Knauf, U. Marewski Mannesmann...

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