Over 2,000 North Sea wells involved in oil and gas extraction are to be decommissioned at a cost of around £20 billion over the next decade.

That according to latest Decommissioning Insight report from Offshore Energies UK (OEUK).

Decommissioning is the process of withdrawing offshore energy infrastructure from use once it’s no longer needed or at the end of its lifecycle.

The report finds UK decommissioning is expanding fast and predicts a surge in activity over the next four years.

It says the sector will continue growing as other emerging offshore energy technologies, like offshore wind farms, also require the service.

It is estimated around 2,100 North Sea wells will be decommissioned over the next decade – around 200 per year – at an average cost of £7.8 million per well.

“In 2021 a tenth of UKCS oil and gas expenditure went into decommissioning,” said OEUK.

“This proportion has risen to 14% in 2022 and is set to rise to 19% by 2031.

“Over the next ten years, expenditure on decommissioning is predicted to total £19.7 billion, with well decommissioning comprising nearly half of this spend.

“Over 75% of total decommissioning spend will be within the central North Sea, (stretching from Yorkshire to the northern tip of Scotland), and the northern North Sea, (covering an area north of Scotland and east of Shetland and Orkney).

“The surge in work could particularly benefit industrial communities on adjacent coastlines, especially around Teesside, Humber, Aberdeen and Inverness.

“Decommissioning in the Irish Sea will generate more economic benefits in places like Merseyside.

“However, the growth in other renewable energies, such as offshore wind, could cause bottlenecks in demand for decommissioning services, the report says.

“It means the offshore wind, carbon capture and storage, and oil and gas sectors will need to work together and be transparent about planned projects to make sure the opportunity is properly managed.”