Offshore Pipelines

Design

Subsea Developments has designed a number of offshore pipelines. Subsea Developments personnel are experienced with the requirements of international codes and standards for the design of offshore pipeline systems for projects in Australia and overseas.

Engineering capability includes design for:

• Wall thickness
• On-bottom stability
• Coatings and insulation
• Cathodic protection
• Expansion and tie-in spools
• Risers and clamps
• Spans
• Upheaval and lateral buckling
• Seabed profile
• Route design
• Crossings and shore approach
• S-lay, reeled and towed installation
• Piggybacks, umbilicals and flexibles
• Materials selection
• Procurement specifications

Subsea Developments personnel operate a number of proprietary design software packages including Sage Profile, AGA, Offpipe and Autopipe.

Verification

Subsea Developments is an independent Australian owned consultancy. This combined with the broad experience of Subsea Developments personnel from detailed design and installation engineering, to construction and pre-commissioning, provides a unique capability for the verification of offshore pipeline designs in the Australasian region. As a further outcome from the verification reviews, Subsea Developments can report on any design areas where optimisation may possible.

Optimisation

Subsea Developments can review pipeline designs performed by others for optimisation potential to reduce costs. Subsea Developments have been engaged to perform an optimisation study of the final design for a major pipeline project. Potential savings were identified in a number of areas.

Specialist Expertise

Subsea Developments have invested in the technical development of the following specialist areas:

• Application of isolation technologies for repair, maintenance and tie-in options in association with PSI.
• Mattress stability and protection including development of the matstab program in association with Sea-Struct Pty Limited.
• Application of slurry technology to pipeline stabilisation problems in association with Slurry Systems Pty Limited.