Characterisation of Ring Testing in the Design of Offshore Oil Transportation Systems

Authors

  • Federico Guarracino University of Naples “Federico II”, Napoli – Italy; 2Ideas srl, Napoli, Italy
  • Aldo Giordano University of Naples “Federico II”, Napoli – Italy; 2Ideas srl, Napoli, Italy

DOI:

https://doi.org/10.15377/2409-787X.2015.02.01.2

Keywords:

Ring collapse test, pipe qualification, out of roundness, seal friction, plastic buckling.

Abstract

The manufacturing procedure qualification tests (MPQT) of offshore pipelines projects has recently started to rely on ring collapse tests, which consist in testing a short section (50 mm) of a full scale joint. This approach is capable of providing valuable insight into the collapse behaviour of offshore pipelines and has practical, financial and logistic benefits.Detailed analytical and numerical work has been carried out in order to understand the collapse mechanisms and the influence of several parameters, like geometry, material strength and seal friction, on the collapse behaviour has been investigated.It is found that the shape of the initial imperfection and the seal friction can both affect the collapse and produce a variation in the value of the collapsing pressure.

Author Biographies

Federico Guarracino, University of Naples “Federico II”, Napoli – Italy; 2Ideas srl, Napoli, Italy

Department of Structural Engineering

Aldo Giordano, University of Naples “Federico II”, Napoli – Italy; 2Ideas srl, Napoli, Italy

Department of Structural Engineering

References

Roberts PM, Walker AC. Method and apparatus for pipe testing. United States Patent no. 20100212405, 2010.

Guarracino F, Fraldi M, Giordano A. Analysis of testing methods of pipelines for limit state design, Applied Ocean Research 2008; 30: 297-304. http://dx.doi.org/10.1016/j.apor.2008.12.003

Guarracino F, Walker AC, Giordano A. Effects of Boundary Conditions on Testing of Pipes and Finite Element Modelling. Int J Press Ves Piping 2009; 86: 196-206. http://dx.doi.org/10.1016/j.ijpvp.2008.09.009

Guarracino F. A Simple Formula for Complementing FE Analyses in the Estimation of the Effects of Local Conditions in Circular Cylindrical Shells CMES 2011; 72 (3): 167-184. http://dx.doi.org/10.3970/cmes.2011.072.167

Tata Steel. Ring Collapse Testing Data. Internal Report. Tata Steel Tubes: Rotherham, UK 2011.

Nash I, Carr P. The production and testing of meidp line-pipe for 3500m application. Proceedings of the International Offshore and Polar Engineering Conference 2013; 14-23.

Selker R, Ramos PMC, Liu P. Interpretation of the South Stream Ring Collapse Test Program Results, Proceedings of the 24th International Ocean and Polar Engineering Conference, Busan. South Korea 2014; 2: 88-95.

Det Norske Veritas. Submarine Pipeline Systems. DNV-OSF101. Høvik Bærum Norway 2007.

Fraldi M, Guarracino F. An improved formulation for the assessment of the capacity load of circular rings and cylindrical shells under external pressure. Part 1. Analytical derivation. Thin-Walled Structures 2011; 49: 1054-1061. http://dx.doi.org/10.1016/j.tws.2011.03.014

Fraldi M, Freeman R, Slater S, Walke AC, Guarracino F. An improved formulation for the assessment of the capacity load of circular rings and cylindrical shells under external pressure. Part 2. A comparative study with design codes prescriptions, experimental results and numerical simulations. Thin-Walled Structures, 2011; 49: 1062-1070. http://dx.doi.org/10.1016/j.tws.2011.03.013

Fraldi M, Guarracino F. Towards an accurate assessment of UOE pipes under external pressure: Effects of geometric imperfection and material inhomogeneity. Thin-Walled Structures 2013; 63: 147-162. http://dx.doi.org/10.1016/j.tws.2012.10.007

FARO Technologies. FaroArm® Manual. FARO Technologies. Inc Lake Mary FL 32746 USA, 2009.

Fraldi M, Guarracino F. Stability analysis of circular beams with mixed-mode imperfections under uniform lateral pressure, Advances in Mechanical Engineering Volume 2014; Article number 294507. http://dx.doi.org/10.1155/2014/294507

Guarracino F. Considerations on the numerical analysis of initial post-buckling behaviour in plates and beams. Thin- Walled Structures 2007; 45: 845-848. http://dx.doi.org/10.1016/j.tws.2007.08.004

Guarracino F, Walker AC. Some Comments on the Numerical Analysis of Plates and Thin-Walled Structures. Thin-Walled Structures 2008; 46: 975-980. http://dx.doi.org/10.1016/j.tws.2008.01.034

Forde WRB, Stiemer SF. Improved Arc Length Orthogonality Methods for Nonlinear Finite Element Analysis. Computers & Structures 1987; 27: 625-630. http://dx.doi.org/10.1016/0045-7949(87)90078-2

Crisfield MA. Non-linear Finite Element Analysis of Solids and Structures. Vol. 2, Advanced Topics. John Wiley & Sons. Chirchester 1987.

Simulia. ABAQUS 6.1.3 User’s Manual. Dassault Systèmes Simulia Corp Providence Rhode Island 2014.

Downloads

Published

2015-04-20

How to Cite

1.
Federico Guarracino, Aldo Giordano. Characterisation of Ring Testing in the Design of Offshore Oil Transportation Systems. Int. J. Petrol. Technol. [Internet]. 2015Apr.20 [cited 2021Sep.25];2(1):7-17. Available from: https://www.avantipublishers.com/jms/index.php/ijpt/article/view/226

Issue

Section

Articles