Petrobras will be acquiring a rigid riser-based subsea solution by Allseas for the ultra-deepwater Ataptu-2 pre-salt field development, 230 kms offshore Rio de Janeiro, Brazil.
Won by tender, the contract covers design, procurement, construction and installation of 143 kms of rigid risers and flowlines in water depths exceeding 2000 metres. The subsea network will connect 18 wells to a new FPSO via steel catenary risers in a ‘lazy wave’ configuration. The scope also includes critical components such as flex-joints, pipeline end terminations and jumpers to complete the connections. Offshore work is scheduled to begin in Q1 2029 and will be executed by Allseas’ pipelay vessel Audacia.
Scopewise, Atapu-2 surpasses Búzios-10, comprising additional wells and longer pipeline systems. The combined value of Búzios-10 and Atapu-2 contracts rank among the largest and most technically complex in Allseas’ 40-year history.
With offshore work scheduled to begin in Q1 2029, Allseas' project management and engineering presence has been expanded in Rio de Janeiro to support both projects aided by its strategic hub for operations in Brazil. Preparations are underway to award subcontracts for seamless linepipe manufacturing, internal cladding and flexible joints for the steel catenary risers, further strengthening the local supply chain.
André de Melo, Allseas General Manager Brazil, said, “This award demonstrates Petrobras’ confidence in Allseas’ proven capability to execute large-scale, technically complex projects safely and efficiently. We are proud to contribute to the continued development of Brazil’s offshore resources and to strengthen our engagement with local suppliers and talent.”
