Allseas has secured a contract from Enbridge Offshore Facilities to install more than 500 km of deepwater export pipelines in the US Gulf.
The Swiss contractor will build and install four export lines linking upcoming deepwater fields in the Keathley Canyon area to existing hubs in Green Canyon and Garden Banks. The package covers 321 km of 24-inch and 26-inch oil pipeline feeding into the Green Canyon 19 platform, and 195 km of 12-inch gas pipeline tied into Enbridge’s Magnolia Gas Gathering System.
The oil line will eventually link to the Rome pipeline, scheduled for installation in 2028, while the gas system will tie into the Sparta gas pipeline – owned by Enbridge and Shell – which Allseas is set to install in 2026.
The company will carry out the offshore campaign in 2027–2028 using its pipelay vessel, Solitaire. Financial terms have not been disclosed.
With the new award, Allseas has added another large project to its long-running US Gulf portfolio. The company has already installed more than 8,000 km of subsea pipelines in the region and said the latest deal highlights its ongoing role in supporting critical energy infrastructure as operators expand production in deeper waters.




