Maersk Drilling required support with their abandonment program in the central North Sea, for eight wells on the Leadon Field and two wells on the James Field. Following a successful tender process, Aquaterra Energy delivered a complete subsea high-pressure riser system, the associated equipment and a detailed riser analysis report to the Maersk Gallant by February 2017.

The rig was initially deployed to the James Field in March 2017 where the subsea high-pressure riser system was run, allowing for the successful re-entry into the wells for the abandonment program to begin.

Key modification work was required in order to accommodate the running of a subsea high-pressure riser system, as well as the associated abandonment equipment.

Handling and storage of the subsea high-pressure riser and its associated equipment was possible due to the development of project specific procedures.