Equinor Makes Up to 50 Million BOE Oil and Gas Discovery in North Sea

Norwegian energy major Equinor has announced a new oil and gas discovery in the North Sea, with preliminary estimates indicating between 19 million and 50 million barrels of recoverable oil equivalent (BOE) near the producing Oseberg field. The discovery, named Grimsnes, was made in exploration well 30/8-7 S in production license PL 190, approximately 15 kilometers southwest of the Oseberg Sør platform and 145 kilometers west of Bergen. Equinor operates the license with a 50% stake, alongside Norway’s state-owned Petoro, which holds 40%, and TotalEnergies (NYSE: TTE), with the remaining 10%. The company intends to accelerate the development by connecting Grimsnes to the existing Stjerne subsea installation and routing production through the Oseberg Sør platform, reducing the need for new infrastructure and potentially lowering development costs. Equinor expects an investment decision as early as summer 2027, with first production targeted within three years. The proposed development would likely involve two or three production wells connected to a standardized four-slot subsea template. To shorten the development timeline, Equinor plans to begin procuring subsea production equipment in early 2027, potentially before receiving final project approval. Standardized equipment could be reassigned to other developments if Grimsnes does not proceed. The discovery supports Equinor’s broader strategy of maximizing production from mature offshore areas through smaller satellite fields connected to established facilities. Oseberg Sør, which began producing in 2000, already processes hydrocarbons from several nearby subsea developments. Using this infrastructure allows operators to bring additional resources online without constructing entirely new production platforms. Equinor is seeking to cut both subsea project development costs and the time between discovery and first production by approximately 50% through standardization and simplified project execution. The Grimsnes discovery also comes as Norway seeks to sustain oil and gas output from its aging offshore fields while maintaining its role as a major energy supplier to Europe. Norway remains a critical source of natural gas for European markets, particularly following Europe’s efforts to diversify away from Russian pipeline supplies. Equinor plans to drill approximately 200 near-field exploration wells and complete around 75 subsea developments by 2035, reflecting its increasing emphasis on extracting additional resources from established producing areas. The company aims to maintain Norwegian continental shelf production at approximately 1.3 million BOE per day through 2035, with roughly 70% of that output expected to come from new wells and developments. For Equinor and its partners, Grimsnes represents an opportunity to add commercially attractive barrels while extending the productive life of infrastructure already operating in the North Sea. Although the partners have not disclosed development costs or expected daily production volumes, the discovery highlights the potential for infrastructure-led exploration to offset declining production from Norway’s mature offshore fields. By Charles Kennedy for Oilprice.com…Read more by Charles Kennedy