Equinor Targets Further Value from Johan Sverdrup Through New Subsea Development Linked to Existing Infrastructure

Kjetil Hove, executive vice president for Development and Production Norway, visiting the Johan Sverdrup field in the North Sea.
Photo: Arne Reidar Mortensen / ©Equinor

(IN BRIEF) Equinor and its partners are maturing Johan Sverdrup phase 4 after recent appraisal wells confirmed additional oil volumes in the Tonjer and Geitungen areas of the North Sea field. The new resources, preliminarily estimated at 20 million to 30 million barrels of oil equivalent, are planned to be developed through a subsea tie-back to existing Johan Sverdrup infrastructure. This approach is intended to enable faster development, lower costs and lower emissions compared with standalone infrastructure, while helping maintain production from Norway’s largest oil-producing field. The project is being advanced toward an investment decision, with possible production start-up in 2029, and forms part of Equinor’s wider strategy to accelerate subsea developments connected to existing assets. The Johan Sverdrup Unit partners are Equinor, Aker BP, Petoro and TotalEnergies.

(PRESS RELEASE) STAVANGER, 16-Jun-2026 — /EuropaWire/ — Equinor and its partners are advancing plans for a new subsea development in the Johan Sverdrup area after recent appraisal drilling confirmed additional oil volumes. The new resources will form the basis for Johan Sverdrup phase 4, helping maintain production and value creation from Norway’s largest oil-producing field while supporting Europe’s energy security.

The latest appraisal wells in the Johan Sverdrup area have confirmed increased oil volumes, with discoveries in the Tonjer wells and Geitungen now being matured as part of the next development phase. The planned project will use subsea infrastructure tied back to the existing Johan Sverdrup facilities, allowing the partnership to develop the resources efficiently by using infrastructure already in place.

Kjetil Hove, Equinor’s Executive Vice President for Development and Production Norway, said the new volumes are important and profitable for Johan Sverdrup. He said connecting the resources to existing infrastructure makes it possible to develop them quickly, with low costs and low emissions, while helping sustain production and long-term value creation from one of Norway’s most important oil-producing fields.

The resources from Tonjer west, Tonjer east and Geitungen are planned to be developed through a subsea tie-back to Johan Sverdrup’s existing infrastructure. This approach is intended to help extend and stabilise output from the field as part of the partnership’s wider strategy to maximise value from established assets.

Hove said Johan Sverdrup has been a backbone of Norwegian oil production since it came on stream. To sustain production and value creation over the coming decades, he said Equinor and its partners must continue developing new resources around existing infrastructure. He described phase 4 as an example of how additional value can be created from a world-class field.

Tonjer is located in the northernmost part of the Geitungen terrace within the Johan Sverdrup area. Oil had previously been discovered in the area, but the size and potential of the resources remained uncertain. The drilling of two appraisal wells and a sidetrack has now provided a stronger basis for evaluating the resource base more accurately.

Preliminary estimates for Tonjer and Geitungen combined range from 20 million to 30 million barrels of oil equivalent. Further analysis of subsurface data will be carried out to refine the resource estimates.

The project is now being matured toward an investment decision, with possible production start-up in 2029. The development forms part of Equinor’s plan to accelerate a broad portfolio of subsea projects tied back to existing infrastructure.

Equinor’s objective is to increase value creation from existing fields by shortening project development timelines and expanding the number of subsea developments connected to established production systems. This strategy is shared by the Johan Sverdrup partnership.

The licensees in the Johan Sverdrup Unit are Equinor with 42.62%, Aker BP with 31.57%, Petoro with 17.36% and TotalEnergies with 8.44%.

Media Contact:

Sissel Rinde
Vice president Media relations
Corporate affairs
sisr@equinor.com
+47 412 60 584

SOURCE: Equinor