Tyra I

Discovery and Initial Production

• The Tyra gas field was discovered in 1968 by Maersk Oil.
• Production commenced in 1984, making it one of the oldest and most important gas fields in the Danish North Sea.

Field Structure and Operations

• The Tyra field is the largest gas condensate field in the Danish sector of the North Sea. It consists of two main centers, Tyra East and Tyra West, which are linked to five unmanned satellite fields: Tyra Southeast, Harald, Valdemar, Svend, and Roar.
• The field processes more than 90% of the gas produced in Denmark and the entire gas production of the Danish Underground Consortium (DUC).

Infrastructure and Platforms

• Originally, the Tyra East complex had six platforms, and the Tyra West complex had five platforms. These platforms were connected by bridges and included production, processing, and accommodation facilities.
• Due to subsidence of the chalk reservoir over 30 years, the platforms had sunk by approximately 5 meters, necessitating a major redevelopment project.

Redevelopment Project

• In December 2016, Maersk Oil announced plans to cease production due to the lack of an economically viable solution to continue operations safely. However, an agreement with the Danish Government in March 2017 led to a reduction in taxation on hydrocarbon activities, facilitating the redevelopment.
• The final investment decision (FID) was made in December 2017, following approval by Danish authorities.
• The redevelopment project involved the removal and decommissioning of the old facilities, estimated to cost around kr4 billion ($637 million), and the construction of new infrastructure, which cost approximately kr17 billion ($2.7 billion).
• The project included dismantling the old installations, which was completed in the summer of 2020 using large construction and crane vessels. About 50,000 metric tons of material were removed and recycled, with 98.5% of the materials being recycled or reused.
• New platforms were installed, including six wellhead and riser platforms, an accommodation platform, and a processing platform. The last processing module was installed in October 2022, setting a world record for the heaviest crane lift at sea.

Production Restart and Benefits

• Production from the redeveloped Tyra field, known as Tyra II, resumed on March 21, 2024. The field is expected to ramp up to full technical capacity within a few months.
• The redeveloped field is expected to produce enough gas to power approximately 1.5 million Danish homes and will extend the field's life by 25 years. It will also reduce greenhouse gas emissions by 30% compared to the old facilities.
• The project aims to unlock gross reserves in excess of 200 million barrels of oil equivalent (boe) and decrease operational expenditures (OPEX) significantly.

Partners and Ownership

• The Tyra field is operated by a consortium that includes TotalEnergies (43.2%), BlueNord (36.8%), and Nordsøfonden (20%).

Environmental and Efficiency Improvements

• The new facilities at Tyra II incorporate state-of-the-art digital solutions and technological innovations to optimize energy efficiency and reduce the environmental footprint. The project targets a significant reduction in emissions and higher operational efficiency.

Economic and Energy Security Impact

• The redevelopment of the Tyra field is crucial for Denmark's energy security, enabling the country to be self-sufficient in gas and potentially become a net exporter, thus contributing to Europe's security of supply.
• The project is expected to generate 2.8 billion cubic meters of gas per year, restoring Denmark's former position as a net exporter of natural gas.

In summary, the Tyra gas field is a critical component of Denmark's energy infrastructure, and its redevelopment ensures the continued production of significant gas reserves while enhancing operational efficiency and reducing environmental impact.