BOKA Da Vinci Delivers Subsea CO2 Storage Hook-up at Nini

Boskalis’ diving support vessel BOKA Da Vinci has completed a set of subsea installation works in the northern North Sea for INEOS, supporting the Greensand carbon dioxide (CO2) storage initiative tied to Denmark’s offshore Nini oil and gas field.

In less than a month, Boskalis Subsea Services mobilised saturation divers and a remotely operated vehicle to install a dynamic hose system on the seabed, fitted with 49 buoyancy modules. After that installation, the pipeline end manifold was positioned on the seabed with precision, and a static hose was installed in two separate sections.

The infrastructure is intended to enable CO2 captured onshore to be transported offshore for injection into the new storage facility. The CO2 is set to arrive at Nini on a special bulk cargo carrier, which will connect to the dynamic hose installed by Boskalis before injection.

Boskalis said the work demonstrates how its subsea capabilities—typically used for decommissioning, inspection, repair, and maintenance—can also be applied to CO2 storage programmes in the North Sea.