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Transport and single-lift installation of the drilling (DP), process (P1) and accommodation (LQ) platform topsides for the first development phase of the giant Johan Sverdrup field in the Norwegian North Sea.
Company : Equinor
Location : Norwegian North Sea, 160 kilometres west of Stavanger
Installation : 2018 (P1 topsides), 2019 (DP & LQ topsides)
Water depth: 110 m
First platform installations by Pioneering Spirit
4 years of preparation, 60 hours of execution
Single-lift technology saved 1 million offshore hours & accelerated first gas by six months
Scope of work
- Engineer topsides underdeck lift points & stab-in cone requirements
- Design & fabrication of leg mating units
- Prepare jackets for topsides installation
- Provide Iron Lady and services for piggyback transport of production platform on Heavy Transport Vessel (HTV) from Korea to Norway
- Transfer & installation (T&I) of the 22,000-tonne DP topsides, 26,000-tonne P1 topsides & 18,000-tonne LQ topsides
22,000-tonne
DP topsides
26,000-tonne
P1 topsides
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Specials & challenges
- First T&I job for Pioneering Spirit
- Industry-first transport and single-lift installation of large topsides
- Use of Pioneering Spirit cut one million manhours offshore, enabling Equinor & partners to start-up the field three-to-six months earlier than planned and cut estimated costs for Plan for Development & Operation (PDO) for Phase 1 by NOK 1 billion
- Project-critical in-house Leg Mating Unit (LMU) design & fabrication
- 4 years of engineering & preparation, 60 hours of execution (T&I for all 3 topsides)
18,000-tonne
LQ topsides
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