Offshore construction specialist Allseas has been selected for the subsea pipeline project of the Porthos carbon capture and storage (CCS) project in the Port of Rotterdam, the first development of its kind in the Netherlands.
Porthos, a partnership between EBN, Gasunie and the Port of Rotterdam Authority, will transport CO2 from industrial sites in the port area to empty gas fields in the Dutch North Sea, where it will be permanently stored up to 4 km beneath the seabed.
Under the contract, Allseas will carry out the installation, burial and commissioning of the 16-inch CCS pipeline connecting a compressor station on the Maasvlakte with the P18-A platform about 20 km offshore. The work is set to start in 2025.
Pipelay will be executed by Allseas’ vessel Lorelay, with construction support from Oceanic.
“Back in the mid-1980s, as the world’s first pipelay vessel operating fully on dynamic positioning, Lorelay installed some of the earliest gas and oil pipelines in the Dutch North Sea. The fact that almost four decades later, the same vessel will install the first carbon capture pipeline is a testament to our ongoing innovation and continuous improvement of our vessels’ capabilities,” remarked Allseas chief executive Pieter Heerema.
Porthos is expected to become operational in 2026 and to reduce the Netherland’s annual CO2 emissions by about 2%. The pipeline will transport about 2.5m tonnes of CO2 per year for 15 years to the North Sea storage site.
