Global Pipeline Buckling Symposium

23–24 February 2011 SUT Perth Two-day Symposium, Subsea Australasia Conference 2011, Perth, Australia

Overview

SUT Perth Branch organised their 1st International Symposium on the comprehensive
review of the non-linear bases and advanced analysis methods used in the design and installation of Subsea Pipelines on the 23rd and 24th February 2011 in Perth in conjunction with the Australian Oil and Gas (AOG) Exhibition. The central theme for the 2011 Symposium was pipeline susceptible to lateral buckling.

The assessment of HPHT subsea pipelines considering the mechanisms and effects of lateral buckling is a central feature of a large proportion of new pipeline systems. There is a trend to higher temperatures that may result in the design for lateral buckling methods that are valid only for more moderate temperatures. Research and development programmes, in the form of individual efforts and JIP’s have provided guidance on analysis methods. The use of limit state methodology, based on load-controlled and displacement-controlled criteria are now available to pipeline designers for FEED and detailed design.

Much of the design analysis is carried out using computer based methods, including finite element modelling. There is some guidance on these but as time goes on the pipeline systems, geotechnical modelling and incorporation of new materials become more complex and the current analysis methods may become invalid.

• This two-day Symposium aimed to provide a forum for leading exponents and interested pipeline engineers to meet and to present papers and participate in discussions related to the practice, current development and future research supporting design for lateral buckling.
• Enabled a comprehensive review of the current state of lateral buckling analysis and assessment.
• Provided a forum to enable interchange of views on future developments in design, installation and operation of HTHP pipeline systems.

Presentations

General

Global Pipeline Buckling – An Operator’s Perspective

Andrew Pearce, Woodside Energy Ltd

Measurement Techniques to Monitor Structure Settlements and Pipeline Movements

Bill Russel-Cargill, DOF Subsea

The Suitability of CRA Lined Pipes for Flowlines Susceptible to Lateral Buckling

Duncan Wilmot, Cladtek International

Design Guidance

Limit State and Lateral Buckling

Dr Andrew Palmer, National University of Singapore

SAFEBUCK – Lateral Buckling and Pipeline Walking Overview

David Leslie, Atkins Boreas

What Is Out There of Guidance: Pros, Cons and Future Development

Leif Collberg, DNV

Design Experience

Lateral Buckling Design and Field verification

Lim Kok Kien, J P Kenny

Experiences in Buckling Design of Pipeline Laid on Very Irregular Seabed

Knut Tørnes J P Kenny

Experiences and Learning Applied to Current Global Buckling Analyses

Emil Maschner, J P Kenny

Numerical Modelling Technique

Advanced Finite Elements Analysis of Pipe-in-Pipe Lateral Buckling in Deep Water Environments

Philip Cooper, IntecSea

Assessment of Numerical Modelling of HTHP Pipeline lateral Buckling with complex Soil Friction

Alastair Walker, IntecSea

Prediction and Mitigation of Pipe Walking on Flowline on Soft Soils and Sloping Seabeds

Colin McKinnon, J P Kenny

Mechanics of Pipe-Soil Interaction

SMARTPIPE Second Offshore Deployment: Observations of Axial Pipe/Soil Response

Hans Hanse, Fugro Survey Pty Ltd

Numerical Modelling of Pipe-Soil Interaction for Lateral Buckling

Prof David White, University of Western Australia

Two Geotechnical Aspects of Lateral Buckling Design: On-bottom Embedment, and Of-bottom Support Design

George Zhang, Advanced Geomechanics

Pipe-soil Force-Resultant plasticity models for analysis of lateral buckling: are they really needed?

Hendrik Falepin, Cathie Associates

Weld Fracture

Strain Capacity of CRA Lined Pipe Girth Welds for HPHT Flowline Applications

Philip Cooper, IntecSea