DELFT, The Netherlands — Allseas’ Pioneering Spirit has removed Repsol Norge’s decommissioned Gyda platform jacket in the southern Norwegian Sea and delivered it to Aker Solutions’ disposal yard in Stord, western Norway.
The vessel removed the 11,000-metric ton structure using its new upending jacket lift system, which has a 20,000-metric ton lift capacity.
In May, Pioneering Spirit delivered the Gyda topsides to the same site. Aker Solutions will look to recycle about 98% of the facilities.
To facilitate removal of the jacket, the 24 foundation piles were cut below seabed level. Main hoist blocks suspended from the JLS beams were connected to pre-installed rigging, with the entire structure lifted and aligned with the lifting beams.
As the jacket had been fabricated and installed vertically, it could not sustain loading in the horizontal position during transport. So the vessel transported the structure in a near-vertical (60%) position, with interface supports and grillage.
Pioneering Spirit’s next assignments include further jacket removals and installation of an offshore wind transmission station and jacket in the German North Sea.
So far this year, the vessel has lifted and transported more than 90,000 metric tons of decommissioned and new offshore facilities, using its jacket lift system and topsides lift systems.