In the Norwegian Sea, Equinor has commissioned the second phase of its subsea compression system in the Åsgard field. This technology increases the pressure in the pipelines connecting the wells to the Åsgard B platform, resulting in increased natural gas recovery from producing reservoirs.
Up to 90 % gas recovery at Midgard and Mikkel
Thanks to this new phase, the Midgard and Mikkel fields are expected to reach a recovery rate of 90%. This is equivalent to the extraction of an additional 306 million barrels of oil equivalent.
The compressor station is located at 270 meters depth and has two compressor modules operating in parallel, with a spare train located in Kristiansund to maintain operational continuity.
Modular technology for efficiency
Since its entry into operation in 2015, the system has maintained close to 100 % uptime, generating around NOK 175 billion in value.
The infrastructure, developed by OneSubsea and Everllence and installed by TechnipFMC, uses a modular design that facilitates future upgrades with reusable components.
Collaboration to maximize reservoir potential
Equinor is leading the project in partnership with Petoro, Vår Energi, TotalEnergies and Repsol Norge, who share the Åsgard and Mikkel licenses. The joint objective is to maximize gas recovery in mature fields by applying advanced technology and efficient operational strategies on the Norwegian continental shelf .
With a surface area of 3,300 m² and a weight of 5,100 tons, the Åsgard Subsea Compression Station Åsgard Subsea Compression (ÅSC) is the largest processing facility on the seabed. Its modular “Lego”-style architecture allows for rapid interventions when required, consolidating Norway as a world reference in advanced gas recovery .
Source and photo: Equinor
