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JP Kenny is using Abaqus, a complete suite of unified finite element analysis (FEA) software from Simulia, the Dassault Systemes brand for realistic simulation, in the design of a sea-bed pipeline.

The project includes route mapping and a proposed carbon dioxide sequestration project.

Key elements of the project are: construction of a network of seabed manifolds and pipelines from the gas fields to an offshore island; large sub-sea structures requiring specialised installation technology; a gas processing facility on the island; gas sequestration in formations deep below the island; LNG shipping facilities to transport products to international markets.

The deepwater location of part of the gas field presents challenges for the design and installation of large-diameter pipeline.

The pipeline requirements include 260km of large gas delivery line and 520km of small- diameter pipe connecting the wellheads, manifolds and other equipment.

Other issues to be considered in the design of the pipeline are the effects of the local marine environment, which features steep escarpments at the continental shelf, the annual cyclone season, large tidal movements, and strong currents, which impact on the seabed and the pipeline itself.

Abaqus is helping engineers develop and test designs to withstand the pipeline dynamics and the forces operating at the continental shelf crossing.

Detailed lateral buckling analyses are conducted to assess forces and strains across the full range of behaviours, and to investigate the potential for pipeline creep or walking.

Pipeline and pipeline-to-seabed interaction are modelled using the Abaqus contact surface option, which helps to define appropriate locations for built-in buckle points.

It is also helping to identify expansion spool sizes, and is used to predict bending and ovalisation of the pipeline.

Abaqus is also used to confirm locations where the pipeline should span the sea floor escarpment at the continental shelf, which drops from 200 to 800m water depth.

Crossing the escarpment at the optimum point will reduce the pipe lay for the project by up to 40km – a significant cost saving.

The team is also exploring deepwater trenching to reduce this span.

The technologies being applied to the design and development of these gas fields are helping to make these huge energy assets commercially viable.

In addition to identifying the potential to reduce the pipeline length by 40km, the software is also helping to make this asset safer and more environmentally responsible.

Dassault Systèmes

About Dassault Systèmes

As a world leader in 3D and Product Lifecycle Management (PLM) solutions, Dassault Systèmes brings value to more than 100,000 customers in 80 countries. A pioneer in the 3D software market since 1981, Dassault Systèmes develops and markets PLM application software and services that support industrial processes and provide a 3D vision of the entire lifecycle of products from conception to maintenance to recycling. The Dassault systems portfolio consists of CATIA for designing the virtual product – SolidWorks for 3D mechanical design – DELMIA for virtual production – SIMULIA for virtual testing – ENOVIA for global collaborative lifecycle management, and 3DVIA for online 3D lifelike experiences. Dassault Systèmes is listed on the Nasdaq (DASTY) and Euronext Paris (#13065) stock exchanges. For more information, visit our website.

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