Heerema’s SSCV Sleipnir has safely and sustainably removed Shell’s 10100 mT Brent Alpha jacket.
This single jacket lift breaks Sleipnir’s recent record for lifting the 8100 mT Jotun-B jacket.
This project is Sleipnir’s fourth decommissioning job for this summer. The vessel will continue to be busy in the North Sea before swapping the largest lifts for one of the smallest with the installation of Dana Petroleum’s P11-Unity Platform later this year.
So far, Sleipnir has safely removed and transported more than 43900 mT of decommissioned offshore infrastructure for recycling over this summer campaign.
For the Brent Alpha jacket removal, Sleipnir arrived at the Brent Field located 186 km northeast of Scotland’s Shetland Islands on July 23, 2020 and completed the project by offloading the jacket onto the quayside at the AF Miljøbase decommissioning site in Vats, Norway on August 11, 2020.
The Brent Alpha jacket removal presented novel challenges for Heerema, resulting in unique solutions. During the project, Heerema cut jacket legs at 7.3m diameter using a 288” Diamond Wire Cutting Tool developed alongside CUT UK, especially for the Brent Alpha removal – the largest leg diameter to have been cut this way.