LEIDEN, the Netherlands – Heerema Marine Contractors’ semisubmersible crane vessel Sleipnir has completed its first decommissioning campaign of the season.
Ekofisk 2/4A was the oldest production platform on the Norwegian shelf when oil production ended in September 2013. The platform will be recycled up to 99% at the AFEBV decommissioning site in Vats, Norway.
According to Heerema, this topsides campaign entailed engineering, preparation, removal, and disposal/recycling of five modules, a crane boom, and a burner boom within the Greater Ekofisk area. The company also developed a dedicated subsea excavator to prepare the jacket for removal later this season by the Sleipnir.
During the project, the Sleipnir ran on LNG when next to the platform, the company said.