Projects

Ardent delivers innnovative buoyancy concept as an alternative to heavy lift vessels

Ardent has designed a new external buoyancy system to recover offshore jackets, as an alternative to more costly heavy lift vessels (HVL) - potentially reducing cost by 35%. Optimising the low draught featured within the design, the Ardent system allows delivery and offload at any suitable quayside facility without recourse to dredging and intermediate barge transfer.

This follows the ground-breaking parbuckling and refloating of the shipwreaked Costa Concordia cruise liner undertaken off the coast of Italy, by Ardent. The lessons learnt from that operation were fundamental in this design work.

Industry Value

This step-change in approach provides flexibility, is safe and easy to deploy and ultimately saves up to 35% in cost vs HLV methods - worth up to £460 million to the UKCS. This new technology also has the potential to create new jobs for the industry, opening up UK yards for large/heavy jackets.

Technology Organisation

Ardent Maritime UK Ltd

Ardent was created to offer a more comprehensive solution to the maritime industry. We will achieve this by diversifying our services from traditional salvage to a full range of emergency management services, project related work, offshore decommissioning and underwater services.

http://www.ardentglobal.com

ProjectArdent - Jacket buoyancy recovery

Challenge

Decommissioning

Vision

Transform Tomorrow

Entry TRL

2

Field Trial

No

Technology

Jacket retrieval

Type

Develop

Achieved TRL

5

Technology Organisation

Ardent Maritime UK Ltd

Ardent was created to offer a more comprehensive solution to the maritime industry. We will achieve this by diversifying our services from traditional salvage to a full range of emergency management services, project related work, offshore decommissioning and underwater services.

http://www.ardentglobal.com

Key Results

This provided a viable alternative method of jacket removal, without lifting, using an external buoyance caisson (EBC) for float and tow. This technique can be used for jackets between 5,000-10,000 tonnes in water drafts 8m or less.

Lessons Learned

The front end engineering process required a diverse group of engineers, which resulted in a more complex start-up. However through strong collaboration and team work, this was resolved - acknolwedged through a nomination at Decom North Sea's 2019 industry Collaboration Award.

Next Steps

Run through several HAZID/HAZOP sessions with support of operators to refine “Archimedes” before embarking on tank model testing.
-Develop attractive commercial model-Engage Client base for commitments
-Engage Client base for commitments