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Engineering, procurement, construction and installation (EPCI) of a riser-based subsea system for the ultra-deepwater Ataptu-2 pre-salt field development offshore Rio de Janeiro.
Company: Petrobras
Location: Santos Basin (230 kilometres offshore Rio de Janeiro)
Water depth: 2000 - 2300 metres
143 km of risers and flowlines in ultra-deep water
28 jumpers, 18 flexible joints & pipeline end terminations
Follows Buzios-10 subsea award in 2024
Scope of work
- Detail design of the risers, pipelines & structures
- Procurement & supply of cladded linepipe & coating materials
- Procurement & supply of installation accessories (incl. flex joints, forgings, valves, diverless connectors, VIV-strakes, riser buoyancy & anchoring systems)
- Design & fabrication of PLETs, jumpers, crossing structures, suction piles & sleepers
- Installation of 143 km of risers & flowlines
- Installation of 18x steel catenary risers (incl. flex joints, VIV strakes & buoyancy modules) for “lazy wave” connection to FPSO
- Installation of 30x PLETs & 28x jumpers interconnecting PLETs to PLETs or to Wet Christmas Trees
- Anchoring of the risers & PLETs
- Pre-commissioning services: flood, gauge & hydrotest the pipelines from PLET to FPSO
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Specials & challenges
- Full EPCI scope
- S-lay riser & flowline installation in water depths of over 2000 metres
- Possible pre-installation of pipelines ahead of FPSO arrival
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