Final topsides structure sailing to North Sea Tyra II gas complex

Sept. 1, 2022

The Tyra II process module has departed McDermott’s yard in Batam, Indonesia, for the Tyra II redevelopment in the Danish North Sea.

The 18,700-ton (17,000-metric ton), 47-m tall module is onboard the GPO Emerald heavy transport vessel.

Offshore staff

ESBJERG, Norway — The Tyra II process module has departed McDermott’s yard in Batam, Indonesia, for the Tyra II redevelopment in the Danish North Sea.

TotalEnergies EP Denmark is leading the project on behalf of its Danish Underground Consortium partners Noreco and Nordsøfonden.

The Tyra East G gas processing module set sail from McDermott’s Batam fabrication yard to Denmark, successfully concluding onshore construction on the Tyra redevelopment project.

The 18,700-ton (17,000-metric ton), 47-m tall module is onboard the GPO Emerald heavy transport vessel. The voyage to the Danish North Sea should take about 30 days. When passing through the Suez Canal, the vessel will have to be ballasted down to pass under a bridge with less than 2 m clearance.

Upon reaching the Tyra Field, the process module will be installed as the final of eight platforms at the upgraded Tyra II gas production complex and will be placed on the jacket by Heerema Marine Contractor’s Sleipnir crane vessel.

At the field center, work continues to power up the installed platforms and reconnect them to the existing North Sea infrastructure.

Construction of the 16,300-sq-m processing module started in October 2018. It contains 19 rooms including an air compressor room, workshops and an Uninterruptible Power Supply room, with a total of 783 km of cables.

Sensors on all the critical equipment (i.e., compressors, pumps, heaters) will continuously collect data, allowing the control room operators to constantly monitor the condition and performance of Tyra II.

With the adoption of new technologies and more modern working processes, TotalEnergies expects Tyra’s operational efficiency to increase to more than 90% once back onstream, helped by electrically driven equipment motors supplied with power from gas turbine generators.

At peak, the process module will be capable of processing 300 MMcf/d of gas from Tyra and five unmanned satellite fields, Tyra Southeast, Harald, Valdemar, Svend and Roar.

The redevelopment, following natural subsidence of the chalk reservoir, involved decommissioning and recycling of the old Tyra platforms; recycling and extending the current platform legs on six of the platforms by 13 m, with new topsides in each case; a new process module and a new accommodation platform.

Tyra II should produce 2.8 Bcm per year, which is about 80% of Denmark’s forecasted gas production.

09.01.2022