Norwegian oil and gas company DNO has wrapped up the last major offshore operation under its multi-year decommissioning programme in the North Sea, thanks to the completion of another activity related to a platform removal campaign for a field off the UK. This was carried out by Heerema Marine Contractors’ second-largest semi-submersible crane vessel (SSCV), Thialf.

Back in 2019, DNO assumed operatorship and working interest in the Schooner and Ketch fields in the UK and the Oselvar subsea field in Norway, three end-of-life fields whose decommissioning had been deferred by the previous operator. To this end, DNO handed out a decommissioning contract for up to twenty-one wells on the Schooner and Ketch fields on the UK Continental Shelf (UKCS ) to Well-Safe Solutions in June 2019.