EnQuest reveals North Sea industry-first supply chain partnership

As part of EnQuest’s late life extension (LLX) programme on its Thistle platform, the operator has joined forces with engineering experts Pyeroy Group, a division of Wood Group PSN, and its sub-contractor – engineered composite repair specialists Walker Technical Resources to deliver a significant part of the topsides integrity work.

Pyeroy Group and Walker Technical Resources have developed a safer, more efficient and cost-effective solution to ensure the long-term integrity of mature assets which is being implemented on the Thistle field.

Using proven composite repair technology, the team will refurbish all four of the Thistle platform’s stair towers which span the 50 metre height of the installation. The technology, which applies and moulds carbon fibre composite material and an epoxy resin to steel structures to make them fit for service, is an industry game changer because unlike conventional methods it does not involve welding, known in the industry as hotwork.

In addition, the lightweight composite material doesn’t add any significant weight to the platform topsides. The composite repair will not corrode, and also prevents further corrosion of the underlying steelwork, while its defined lifespan of 20 years means maintenance is kept to a minimum.

While the technology has also been used offshore by Walker Technical Resources, this is the first time it has been used in the North Sea on such a scale that a specialist team has been created to manage the project.

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