ESBJERG, Denmark — Heerema Marine Contractors’ crane-lift vessel Sleipnir has set down the final topside on a pre-installed jacket at the Tyra gas field in the Danish North Sea.
The 17,000-ton process module installation is said to be the world’s heaviest crane lift undertaken at sea.
After the 47-m tall process module, built by McDermott in Batam Indonesia, reached the field location, the offshore crew started to remove the sea fastening attached for the voyage onboard the GPO Emerald.
Good weather allowed the crane drivers to lift the module into its final position less than 24 hours after its arrival and four days ahead of schedule.
Using Sleipnir’s two crane hooks, the team picked up the process module from the GPO Emerald, with Sleipnir then sailing 1 nautical mile to the jacket while they raised the module by 9 m, followed by lowering onto the six legs.
Over the next few weeks, the final pieces for the Tyra II redevelopment project, the two bridges and a flare will be installed. Once all connections have been welded, the focus will then switch to hookup and commissioning, powering up the installed platforms and reconnecting them to existing offshore infrastructure.
Sleipnir also installed the new jackets in September 2020 and the new accommodation module, six wellhead and riser modules, and four bridges in September 2021 and April 2022.
At peak, the process module will be able to process 300 MMcf/d from Tyra and five unmanned satellite fields: Tyra Southeast, Harald, Valdemar, Svend and Roar.
Sensors on the module’s compressors, pumps and heaters continuously record data, which the control room operators will use to monitor the condition and performance of Tyra II.
Project operator TotalEnergies anticipates that Tyra’s operational efficiency will increase to more than 90% following startup, helped by electrically driven motors supplied with power from the gas turbine generators.
10.04.2022
