Allseas to remove 35,300 tonnes of topsides and jackets from North Sea

PRESS RELEASE – Allseas has been contracted to remove a total of 35,300 tonnes in topsides and jackets from the Norwegian North Sea. Platform preparations are scheduled to commence later this year and part of a modernisation project of Aker BP. 

The scope of the work includes the removal and disposal of multiple topsides and jackets from the Valhall complex including the remotely operated Hod platform. The contract is the latest award triggered by Aker BP under the terms of the frame agreement signed with Allseas in 2017 to provide transport, installation and removal services for the Valhall oil field.

Work comprises removal and disposal of the 5,950-tonne topsides and 4,350-tonne jacket of the Drilling Platform (DP) and 10,900-tonne topsides and 9,500-tonne jacket Production and Compression Platform (PCP), as well as the 1,100-tonne Hod topsides and 3,500-tonne jacket from the connected Hod field, 13 kilometres to the south.

Allseas’ heavy lift vessel Pioneering Spirit will execute the work between 2021 and 2026. Water depth at the field is approximately 70 m. Platform preparations are scheduled to commence later this year, continuing into the 2021 lift season.

In addition, Aker BP has invoked the option for the removal and disposal of the Valhall Quarters Platform (QP) jacket and the 2/4-G jacket on the Ekofisk field, 24 kilometres north of the Valhall complex. This option was associated with the 2017 award for the removal and disposal of the QP topsides, removed by Pioneering Spirit in June 2019.

The QP topside was the first of the three original structures (QP, DP, PCP) at Valhall to be removed as part of the modernisation of the Valhall field centre by Aker BP. Hod is remotely operated from Valhall and was the first unmanned platform in the Norwegian sector of the North Sea when production started in August 1990.

Valhall field

Valhall is a giant oilfield in the southern Norwegian North Sea operated by Aker BP. Valhall and Hod have passed one billion barrels of oil equivalents (oil, gas and NGL) produced, more than three times what was expected at the opening of the field in 1982.

“Aker BPs ambition is to revitalize the Valhall area and to produce another billion barrels from the area. Safe and efficient removal of the original structures will be an important milestone on this journey. The remaining installations at the Valhall field centre and the Flank platforms will continue to produce for many years to come,” says SVP Projects in Aker BP, Knut Sandvik.

Author: Tobias Pieffers

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