Image
Single-lift removal of the complete 30,000-tonne Gyda platform from the Norwegian North Sea and transport to shore for recycling.
Company : Repsol Norge AS
Location : Southern Norwegian sector of the North Sea
66 m
Water depth
Scope of work
- Engineering, preparation, removal & disposal (ERPD) of 18,400-tonne processing/drilling/accommodation topsides & 11,500-tonne jacket (incl. all 32 conductors & subsea template)
- Transfer of topsides & jacket to Iron Lady for load-in to Aker Solutions yard at Stord, Norway
- Transfer of conductors and template to Sagro yard at Vlissingen, the Netherlands
- Pre-lift preparations (incl. removal & separation of under-deck caissons)
- Design, fabrication & installation of bearing blocks to accommodate horseshoe lifting tools
- Topsides leg cutting
- Jacket pile & leg cutting
18,400-tonne
processing/drilling/accommodation topsides
11,500-tonne
jacket
Image
Specials & challenges
- First-time removal of complete platform utilising all Pioneering Spirit lift systems (TLS, JLS & 5000-tonne crane)
- Offshore scope completed in 12 days across two campaigns (removal, transport & load-in of complete platform)
- Design, fabrication & welding of bearing blocks (horseshoe connections), lift trunnions with fixed spreader bars (jacket lift) & various frames (conductor removal)
- Welding of bearing brackets with own crew in combination with Covid restrictions
- Lift & transport of jacket in near-vertical position (60 degrees JLS angle)
- Optimisations for topsides load-in to accommodate future toppling of the structure
- Fabrication of jacket lift trunnions (capacity of 5500 tonne each)
- Removal & reclining of 32 conductors (76 m each)
5500 tonne
Fabrication of jacket lift trunnions
Image
Image
Image
Display on a map
Off