Equinor mulls additional Johan Sverdrup development phase
Key Highlights
- New production from new discoveries in Tonjer west and east and Geitungen will form the basis for Johan Sverdrup phase 4.
- Production will be through a subsea tie-back.
Equinor Energy AS is considering further development of the Johan Sverdrup area resources in the North Sea.
Production from discoveries in Tonjer west and east and Geitungen would form the basis for the maturation of a potential phase 4 development in the northern part of the field. The volumes would be developed via subsea tieback to existing Johan Sverdrup infrastructure.
Tonjer lies in the northernmost part of the Geitungen terrace in the Johan Sverdrup area. Oil was discovered in the area, but volumes and potential have been uncertain. The drilling of two appraisal wells and a sidetrack have provided a more precise assessment of the resource base.
Preliminary estimates for Tonjer and Geitungen combined are 20-30 MMboe. Further analyses of subsurface data will form the basis for more precise resource estimates.
Phase 4 is now being matured towards an investment decision with a possible production start-up in 2029.
Johan Sverdrup
Johan Sverdrup, which accounts for about one third of Norwegian oil production, lies on the Utsira High (Utsirahøyden) in the central part of the North Sea, 65 km northeast of Sleipner field in water depths of 115 m.
The main reservoir contains oil in Upper Jurassic intra-Draupne sandstone. The reservoir depth is 1,900 m. The quality of the main reservoir is excellent with very high permeability. The remaining oil resources are in sandstone in the Upper Triassic Statfjord Group and Middle to Upper Jurassic Vestland Group, as well as in spiculites in the Upper Jurassic Viking Group. Oil was also proven in Permian Zechstein carbonates.
Equinor is operator of Johan Sverdrup (42.62%) with partners Aker BP (31.57%), Petoro (17.36%), and TotalEnergies (8.44%).