Tyra II makes another step towards the finish line with first gas still on track for winter

After the work on Tyra II’s export pipeline was wrapped up, the power-up of two gas turbines at TotalEnergies’ redevelopment project in the Danish North Sea has been completed, thus, the project has now come even closer to the first gas, which is slated for December 2023.

TotalEnergies is the operator of the Tyra field on behalf of the Danish Underground Consortium (DUC) – a partnership between TotalEnergies (43.2 per cent), BlueNord (36.8 per cent) and Nordsøfonden (20 per cent). Tyra II was once again connected to Denmark last week after the work on the export pipeline was completed.

The putting of the crane on the process module (TEG) into permanent use came after the installation of Tyra II process module in early October 2022, which broke the world record as the heaviest crane lift ever undertaken at sea. This module will process 300 million standard cubic feet of gas per day at peak from Tyra and five unmanned satellite fields, including Tyra Southeast, Harald, Valdemar, Svend, and Roar.

“The dedicated teams are working around the clock on ensuring that the Tyra field will be back to production in the winter season of 2023/24. This has led to the achievement of this central power-up milestone earlier than expected which is of great importance to assist in delivering the first gas: Tyra will play a key role in making Denmark self-sufficient and net exporter of affordable and stable energy again – also to the benefit of our European neighbours,” outlined TotalEnergies.

According to the company, the power-up of two gas turbines at the Tyra field has been finished almost one month ahead of schedule, marking “a crucial step” in the final stages of the Tyra redevelopment since the two active gas turbines constitute the main means of power supply for the entire Tyra II hub including the surrounding fields.

Furthermore, the gas turbines are located at the heart of the Tyra facilities – the new processing module –  and the platform is equipped with three turbines where two will be running at all times in the future, and one will be on standby. They will convert natural gas to mechanical energy enabling the production from the field.

The French oil major underlines that each turbine has a power capacity of 35 MW, and they are all configured with the newest technology, making it possible to produce mechanical energy with high energy efficiency and the highest environmental standards. With the power-up achieved, TotalEnergies underscores that the largest infrastructure project in the Danish North Sea is now one step closer to the end.

Once fully operational, Tyra will deliver 2.8 billion cubic meters of gas per year through the export pipelines to Nybro and Den Helder, which amounts to 80 per cent of the forecasted Danish gas production and contributes to Danish and European energy independence. 

Tyra is Denmark’s largest natural gas field and has been a centre for processing and exporting more than 90 per cent of the natural gas produced in the Danish North Sea before its redevelopment. This was necessary due to the field’s natural subsidence of the chalk reservoir after many years of production. 

The redevelopment of the field encompasses three elements: decommissioning and recycling of the old Tyra platforms; recycling and extending the current platform legs on six of the platforms with 13 meters, which will have new topsides; a completely new process module and a new accommodation platform. 

Once the modernised Tyra II is back on stream, TotalEnergies expects it to be the most modern natural gas field in the world, securing continued production of natural gas with 30 per cent less CO2 emissions. BlueNord, TotalEnergies’ partner, highlights that the next step for the GTGs to be available for continuous operations is the completion of the installation of the seawater lift pumps.