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Engineering, procurement, installation and commissioning (EPIC) of a 300-km ultra-deepwater pipeline system connecting the Santos Basin pre-salt natural gas fields off Brazil's southeastern coast with an onshore refinery near Rio de Janeiro.
Company: Petrobras
Location: Santos Basin, Atlantic coast of southeastern Brazil
Water depth: 2300 m
300-kilometre ultra-deepwater pipeline
Installation of 9 vertical M-shaped jumpers
Complex pre-commissioning programme
Scope of work
- Full EPIC contract (free-issued pipe)
- Installation of 143-km, 24-inch & 155-km, 20-inch export pipelines
- Installation of structures (5x PLEMs, 3x PLETs, 7x inline tees, 2x inline wyes & 3x inline ball valves)
- Installation of 9x vertical M-shaped jumpers (sizes 14-inch, 20-inch & 24-inch)
- Free span corrections & 15x pipeline / fibre-optic cable crossings
- Flooding, gauging, testing (FGT), dewatering & pre-commissioning of the complete system
143-km, 24-inch & 155-km, 20-inch
export pipelines
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Specials & challenges
- Onshore transport & storage in Brazil
- In-house fabrication (AFBV, Heusden) of structures
- Total of 2.5 years of support vessel days
- Extremely tight procurement & fabrication schedule
- New project office established in Rio de Janeiro
- Lorelay equipped with active heave compensated (AHC) deep-water winch for jumper installation scope
- Stringent verticality requirements for ILTs & ILYs (for future tie-in by Petrobras)
- Complex pre-commissioning programme (dual diameter pigging: 24-inch & 20-inch reverse through the ILYs; max. 90 days of raw seawater in pipeline; dewatering & nitrogen purging)
- Modifications to Calamity Jane for handling coiled tubing spread for recovery of MEG & N² purge at 2200 m water depth
2.5 years
of support vessel days
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