Tolmount platform installed in the North Sea

Oct. 15, 2020
Heerema’s semisubmersible crane vessel Sleipnir has installed the platform at the Premier Oil-operated Tolmount gas field development in the UK southern North Sea.

Offshore staff

LEIDEN, the Netherlands – Heerema’s semisubmersible crane vessel Sleipnir has installed the platform at the Premier Oil-operated Tolmount gas field development in the UK southern North Sea.

The project consisted of installing the 2,350-metric ton (2,590-ton) jacket and 2,500-metric ton (2,756-ton) topsides constructed by Rosetti Marino.

The Tolmount field is 40 km (25 mi) off the coast of Hull, UK, in a water depth of about 51 m (167 ft).

The jacket and topsides arrived at the Tolmount field following a 5,390-km (3,349-mi) journey from Rosetti's yard in Ravenna, Italy.

The Sleipnir traveled to the Tolmount field on Oct. 7. Installation began on Oct. 12 when the jacket was lifted from the Heerema barge H-408. After finalizing jacket and pile installation, the Sleipnir lifted and installed the topsides on Oct. 13, over five hours, to complete the Tolmount platform project.

Rosetti managed the construction and installation of the low-carbon design jacket and topsides on behalf of Premier Oil. The project involved more than 1,100,000 manhours, was executed LTI free, and was completed in 26 months.

Tolmount is on track to deliver first gas in 2Q 2021.

10/15/2020