DeepOcean Rounding Up Gryphon Alpha FPSO Decom Job

Ocean services provider DeepOcean is nearing completion of a contract awarded by TotalEnergies for the disconnection and tow of the Gryphon Alpha floating production, storage and offloading (FPSO) unit, as well as the removal of associated subsea infrastructure.

This marks a first, with proprietary tooling designed and developed in-house enabling the entire scope to be executed fully driverless.

The scope of work included the flushing of subsea pipelines and manifolds, disconnecting flowlines and umbilicals from trees, removing risers and midwater arches and recovering FPSO moorings.

Once disconnected, DeepOcean also managed the towing of the FPSO.

The spool disconnection and blind flange installation represent pioneering achievements in diverless operations.

“The bespoke tooling created for this scope of work allowed us to perform the entirety of the scope using diverless methodologies that produced exemplary outcomes. Everyone involved in the design, build and offshore operations should be extremely proud of what they have achieved”, said Robin Mawhinney, Managing Director, DeepOcean UK.

The project has been delivered by DeepOcean’s team in Aberdeen, UK, with support from the company’s office in Haugesund, Norway, as required.

The project is nearing completion with the recovery of mooring chains and removal of the risers and mid water arches