Posted on January 15, 2026
Boskalis’ diving support vessel BOKA Da Vinci has completed a unique project in the northern part of the North Sea. Various subsea installation works were carried out for INEOS in the Nini oil and gas field offshore Denmark, enabling the field to be partially repurposed for the storage of carbon dioxide (CO2).
In less than a month, Boskalis Subsea Services deployed saturation divers and a remotely operated vehicle to install a dynamic hose equipped with 49 buoyancy modules on the seabed. Following successful installation, the pipeline end manifold was positioned with precision on the seabed, after which the static hose was installed in two separate parts. This vital subsea infrastructure enables the client to store the CO2 captured onshore in the depleted offshore oil and gas field. The CO2 will be transported to the Nini field by a special bulk cargo carrier that will connect to the dynamic hose installed by Boskalis. Through this hose, the CO2 will be injected in the new storage facility.
Our involvement in the INEOS-led carbon capture and storage project Greensand reflects how Boskalis continues to apply its subsea experience to emerging energy developments. While Boskalis Subsea Services is well established in subsea decommissioning, inspection, repair and maintenance activities, this project highlights how those capabilities can also support CO₂ storage initiatives in the North Sea.
We would like to thank the crew of the BOKA Da Vinci for their work and INEOS for the pleasant cooperation during this project.
