Pyeroy provides innovative maintenance work on North Sea platform

Growing North East business, Pyeroy, is involved in an industry-first offshore asset maintenance partnership in the North Sea

Hugh Pelham, managing director of Pyeroy
Hugh Pelham, managing director of Pyeroy

Growing North East business, Pyeroy, is involved in an industry-first offshore asset maintenance partnership in the North Sea.

Engineering experts from the Pyeroy Group, along with its subcontractor Walker Technical Resources, are working with petroleum exploration company EnQuest on its Thistle platform, north east of Aberdeen, providing so-called ‘integrity work’ for the late life extension (LLX) programme there.

Using proven composite repair technology, they are refurbishing all four of the Thistle platform’s stair towers, which span the 50m height of the installation.

The technology, which applies and moulds carbon fibre composite material and an epoxy resin to steel structures, making them fit for service, is highly significant for the industry because unlike conventional methods it does not involve welding, or ‘hot work’.

In addition, the material does not add any significant weight to the platform topsides, the composite repair will not corrode, and it prevents further corrosion of the underlying steelwork.

Its defined lifespan of 20 years also means maintenance is kept to a minimum.

While the technology has also been used previously 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.

John Welsh, divisional director offshore UKCS at Pyeroy Group, said: “We are delighted to be supporting EnQuest in this important element of their Thistle Late Life Extension project.

“Investing in mature assets is breathing new life into the North Sea, which is having a positive impact across the supply chain, not just in Aberdeen but throughout the United Kingdom.”

Roger Esson at Walker Technical Resources said: “There has been much discussion on how collaboration on technology will help the UK access remaining North Sea reserves and we are delighted that our specialist engineered composite repair solutions will play a part in extending the life of producing assets like Thistle and therefore maximise recovery.

“We continue to collaborate with operators and supply chain partners to develop new and innovative engineered solutions here in the UK, such as our new Structural Deck Rehabilitation product that we have launched at Offshore Europe.”

Pyeroy, which is part of the Wood group, provides a range of services for the oil, gas, marine and rail industries.

Headquartered in Gateshead, it employs around 1,800 people at eight locations throughout the UK and Ireland.

The Thistle Late Life Extension (LLX) Strategy aims to recover over 35 million barrels of oil over the next 15 years from the Thistle and Deveron oil fields, using a mixture of existing well stock and new well.

With activities like improving its topsides integrity, it will also ensure that the platform is operable to 2025 and beyond.

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