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Keywords: collapse pressure
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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-22-124
... results are observed for pipelines with D / t > 30. Results also show that wrapping 0/90° cross-ply CFRP on the conventional steel pipes is more efficient in bucking resistance than the ±45° one. Using 0/90° orientation wrapping, the collapse pressure of a thin pipelines ( D / t =100) can be enhanced...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-130
... surveillance production control pipeline subsea system upstream oil & gas production monitoring installation integrity pipe joint water depth line pipe coating black sea turkstream pipeline collapse resistance strength wall thickness chaudhuri requirement resistance collapse pressure...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-132
... predict the collapse pressure of faceted and conventional pipes. Results showed that the faceted pipe can boost the collapse capacity by at least an 80% increase compared to the conventional pipe. Also, the collapse mode was observed INTRODUCTION In today's world, subsea pipeline systems are construed...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-147
... walls. Collapse-pressure predictions are increasingly conservative for lower D / t . By following the standard, pipelines operating in ultra-deep water may be over-dimensioned. This can culminate in manufacturing requirements that adversely affect project economics or threaten the technical feasibility...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-194
... close parts of the carcass layer causing erosion, leading to thinning of the steel strip of the carcass layer and reducing the pressure collapse resistance of the carcass layer. The carcass layer will have serious consequences in the event of a collapse failure. The collapse pressure of flexible pipes...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-2179
... depths. When pipe walls are becoming thinner, this makes the pipeline more susceptible to collapse. It has been found that, in some cases, the DNVGL-ST-F101 formulations that aim at predicting the collapse pressure of relatively thin-walled pipelines can lead to nonconservative results...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-2180
.... piping simulation strength offshore pipeline collapse pressure piping design midstream oil & gas metals & mining upstream oil & gas girth weld application external pressure equation load capacity pipe thick-walled pipe bending-moment capacity design equation bending-strain...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-096
... cylinder numerical analysis cylindrical hull ansy 5 ansy 16 critical pressure state design boote submarine vehicle collapse pressure thickness defect Buckling Numerical Analysis of Stiffened Cylindrical Structures Gianmarco Vergassola, Dario Boote, Chiara Manca. DITEN, University of Genoa...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-162
... ABSTRACT This study investigates collapse mechanisms of the inner pipe of a pipe-in-pipe (PIP) system under external hydrostatic pressure. It is observed that the geometric and material properties of the outer pipe affect the collapse pressure of the inner pipe ( P ci ). A finite element...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-113
... under the weld-induced geometric imperfection were studied. It is noted that the collapse pressure from the welded structures models are lower than the existing theoretical prediction. The reason for this is mainly because the elastic buckling equation does not include the effect of initial imperfection...
Proceedings Papers

Paper presented at the The 27th International Ocean and Polar Engineering Conference, June 25–30, 2017
Paper Number: ISOPE-I-17-665
... ABSTRACT The collapse pressures of cold formed pipes with rounded stress vs. strain curves in the circumferential direction are evaluated using collapse tests and finite element analyses. A novel prediction method to estimate the collapse pressures of cold formed pipes is discussed. A new...
Proceedings Papers

Paper presented at the The 27th International Ocean and Polar Engineering Conference, June 25–30, 2017
Paper Number: ISOPE-I-17-384
... strip flexible pipe configuration knowledge management pipe requirement cross section external pressure cross-sectional design case study midstream oil & gas collapse pressure Cross-sectional Design and Case Study for an 8-Inch Metallic Strips Flexible Pipe Peihua Han, Ting Liu, Shuai...
Proceedings Papers

Paper presented at the The 26th International Ocean and Polar Engineering Conference, June 26–July 2, 2016
Paper Number: ISOPE-I-16-259
...-pressure curve pipeline offshore bend radius curvature radius-1 cross section finite element model ovality-pressure curve collapse pressure pipe collapse test pipe Behavior of Steel Strip Reinforced Thermoplastic Pipe under Combined External Pressure and Bending Ting Liu, Songhua Liu, Yutian...
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-15-784
... Abstract Line pipes installed via reel laying (R-lay) must exhibit collapse resistance to external pressure in addition to deformability during reeling and unreeling processes. In this study, we analyze the collapse resistance, collapse pressure, and collapse mechanism of line pipes...
Proceedings Papers

Paper presented at the The Twenty-fourth International Ocean and Polar Engineering Conference, June 15–20, 2014
Paper Number: ISOPE-I-14-300
..., considering the final state of the UOE line pipe, its structural behavior is examined under combined bending and external pressure to determine the collapse pressure and the ultimate bending curvature under pressurized conditions. To model steel material behavior, an efficient cyclic plasticity material model...
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
... Abstract A comprehensive study was conducted on the collapse mechanism of rings cut off from line pipe specimens. It was theoretically established that a ring without end restraints should have a lower collapse pressure value than an equivalent full-scale joint. However, similar collapse...
Proceedings Papers

Paper presented at the The Twenty-third International Offshore and Polar Engineering Conference, June 30–July 5, 2013
Paper Number: ISOPE-I-13-544
... of the ring collapse testing both before and after heat soaking will be presented. strength longitudinal final id linepipe original id wall thickness pipe joint displacement jcoe average displacement expansion collapse pressure welspun transverse compression test tensile test jindalsaw...
Proceedings Papers

Paper presented at the The Twenty-third International Offshore and Polar Engineering Conference, June 30–July 5, 2013
Paper Number: ISOPE-I-13-058
... and analyzed with the DBA (Design by Analysis) method for its high external pressure. Both the plastic collapse and buckling collapse analyses are carried out with the finite element method. Several types of analyses which are introduced in ASME BPV Code VIII-2 and EN13445 are done to get the collapse pressure...
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
... investigation. The measured pipe geometries confirmed low ovality and eccentricity of UOE pipes. resistance offshore pipeline reduction pipe material collapse pressure pipe mechanical property diameter upstream oil & gas compression test variation ovality local variation uoe pipe...

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