Allseas wins US Gulf pipeline work; Brazilian riser and flowline contracts

Shell Pipeline Company has contracted Allseas to install the new 150-km, 24-in. Rome oil export pipeline in the US Gulf.

This will extend from Shell’s Green Canyon 19 (GC-19) platform to the Louisiana coast. Shell Pipeline Company awarded the contract on behalf of Amberjack Pipeline Company, its joint venture with Chevron Pipe Line Company.

Allseas’ workscope for the pipeline will include engineering, procurement and installation. The automatically positioned anchor barge Sandpiper will lay the nearshore section in 2027, with the DP vessel Solitaire handling the deepwater section in 2028.

The Rome pipeline is part of a broader program to expand and upgrade US Gulf export infrastructure. Allseas previously managed the Amberjack Debottleneck Project execution in 2016. 

In Brazil, Petrobras has asked Allseas to install rigid risers and flowlines for the Atapu-2 development in the pre-salt Santos basin, 230 km offshore Rio de Janeiro.

In addition, the company will install flex-joints, pipeline end terminations and jumpers to complete the connections. Offshore work is due to start early in 2029, using the pipelay vessel Audacia.

Earlier this year Petrobras awarded Allseas a contract to install 111 km of rigid risers and flowlines linking 16 wells to the new Búzios-10 FPSO in the same basin.

To support the two awards, Allseas has expanded its project management and engineering presence in Rio de Janeiro, and has started the process of issuing subcontracts to local companies for the manufacture of seamless linepipe, internal cladding and flexible joints for the steel catenary risers.