Heerema dismantles giant offshore platform

By Leila Steed21 June 2023

Heerema Marine Contractors has completed the removal of a 1,200 t production platform from an offshore oil well, in what was its final large-scale lifting operation for a multi-year decommissioning programme in the North Sea.

Heerema's Thialf crane vessel Heerema’s Thialf crane vessel. (PHOTO: Heerema)

The company was contracted to the programme by Norwegian oil and gas giant DNO, which has been working to dismantle and remove a total of 24 oil wells in the Schooner, Ketch and Osekvar oil and gas fields since 2019. 

Heerema’s scope of works covered the integrated engineering, preparation, removal, and disposal of the offshore well. 

The company used a 201 m (659 ft) long, semi-submersible crane vessel - named Thialf - to lift the wellhead production facilities platform from an offshore Schooner field facility in the United Kingdom’s waters.

With a maximum load capacity of 14,200 t, the Thialf then transported the wellhead platform to recycling and dismantling experts Hoondert Yard in the Netherlands.

Chris Spence, DNO’s chief operating pfficer, said, “We have conducted these operations in a safe, cost-efficient and environmentally responsible manner, coordinating five tier-one contractors and displaying our capabilities as a full life-cycle offshore operator.”

Following the removal of the wellhead production platform, Heerema later also detached the structure’s jacket.

According to DNO, around 95% of the materials will be recycled.

VIDEO: Contractor demolishes 70-metre-high bridge How Richard Liesegang used explosive to bring down 17,000-tonne Rahmede Viaduct

Delivered directly to your inbox, Demolition & Recycling International Newsletter features the pick of the breaking news stories, product launches, show reports and more from KHL's world-class editorial team.
Latest News
Construction equipment bodies respond to UK’s net zero shift
Association bosses say ‘softer package’ sends wrong message to the industry
Four weeks until World Demolition Summit
Industry’s leading event to take place 17-18 October in Canada
New service to ‘extend the life’ of buildings
New service from Keltbray to help sector extend the life or re-use of existing buildings and structures
Leila Steed Editor, Demolition & Recycling International Tel: +44(0) 1892 786 261 E-mail: leila.steed@khl.com
Simon Kelly Sales Manager Tel: +44 (0) 1892 786 223 E-mail: simon.kelly@khl.com