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West Africa Pipeline Walking Mitigation with Pipe Clamping Mattress

Subcon > News > CS West Africa Pipeline


The Operator was experiencing high-temperature, high-pressure flowline walking in deep water away from an FPSO. The walking was significant enough to cause a failure at the riser base which required the flowline to be shut down. Urgent walking mitigation was required before start-up and production could recommence

Subcon Solution 

Subcon was contracted to complete the detailed design and supply of Pipe Clamping Mattresses to arrest the walking of the pipeline prior to start-up. The scope consisted of:
• Complete detailed design
• Centrifuge tank testing
• 18 x PCMs
• 18 x Log Mats
• 2 x Bespoke lift frames
• Full-scale onshore FAT

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