WORLD’S LARGEST SSCV SLEIPNIR INSTALLS TOLMOUNT PLATFORM IN THE NORTH SEA
The world’s largest and most sustainable SSCV Sleipnir has safely installed the Tolmount platform In the Southern North Sea. The project consisted of installing the 2,350 metric ton jacket and 2,500 metric ton topside constructed by Rosetti Marino.
Sleipnir traveled to the Tolmount Field located 40 km off the coast of Hull, UK, with a water depth of around 51 meters on October 7. Installation began on October 12 when the jacket was safely lifted from the Heerema barge H-408. After finalizing jacket and pile installation, Sleipnir lifted and installed the 2,500 metric ton topside on October 13, over five hours, to complete the Tolmount Platform project. The offshore gas field is jointly owned by Premier Oil (50%), who is also the operator, and Dana Petroleum (50%).
The Tolmount jacket and topside arrived at the Tolmount field following a 5,390 km journey from Rosetti’s yard in Ravenna, Italy. The Tolmount Platform will be a Normally Unattended Installation (NUI), located in the vicinity of the 42/28d-13 appraisal well and will handle wet gas production from four platform wells. The Premier Oil operated Tolmount field development is on track to deliver first gas in the second quarter of 2021 and will be an important energy supplier for the UK.
Rosetti Marino managed the construction and installation of the low-carbon design jacket and topside on behalf of client Premier Oil. The project involved more than 1,100,000 manhours, was executed LTI free, and was completed over a duration of 26 months.
“The close collaboration with Rosetti Marino has been a highlight of the Tolmount project. Despite challenges introduced by the ongoing pandemic, we worked together to find creative solutions, which were handled with total professionalism and high regard for safety,” said Michel Hendriks, Heerema Transport and Installation Director.
Sleipnir has a wide range of sustainability measures, including dual-fuel functionality allowing the vessel to run on LNG, a cleaner fuel than standard MGO. During the Tolmount installation, the vessel ran on LNG, reducing carbon emissions and Heerema’s impact on the planet. This action is in line with Heerema’s announcement that the company will go Carbon Neutral in 2020.
Despite summer coming to a close, Heerema’s Sleipnir continues to be busy in the North Sea, and with another successful and safe installation completed, the vessel moves on to the next project in an active summer campaign.
(Source and image: Heerema)
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