General information
| Client | Petrobras |
| Project | Rota 3 |
| Year | 2016/17 |
| Location | Brazil, Santos Basin |
| Vessels | Calamity Jane, Solitaire, Lorelay |
Scope of work
- Full EPIC contract (pipe is free-issued)
- Installation of 143 km of 24-inch and 155 km of 20-inch gas export pipeline
- Installation of 20 structures: 5x PLEMs (manifolds), 3x PLETs, 7x inline tees, 2x inline wyes and 3x inline ball valves
- Installation of 9 vertical M-shaped jumpers, sizes 14-inch, 20-inch and 24-inch
- Free span corrections and 15x pipeline and fibre optic cable crossings
- Flooding, gauging, testing (FGT), dewatering and pre-commissioning
Project specials
- Onshore transport and storage to be arranged in Brazil
- In-house fabrication (Allseas Fabrication, Heusden)
- Two and a half years of support vessel days
- Extreme tight schedule for procurement and fabrication
- Allseas project office set up in Rio de Janeiro
- Modifications to Calamity Jane for handling coiled tubing spread for recovery of MEG and N² purge at 2200 m water depth
- Solitaire deep-water winch system
- Lorelay Active Heave Compensated deep-water winch for jumper installation
Pipe characteristics
| Length (km/miles) | OD (inch) | WT (mm) | Steel grade |
|---|---|---|---|
| 143 / 89 | 24 | 22.4 - 28.2 | DNV SAWL 450 |
| 155 / 96 | 20 | 25.9 - 27.5 | DNV SAWL 450 |
