Equinor在巴伦支海Johan Castberg油田的7720/7-DD-1H勘探井Drivis Tuböen发现了石油。初步估计，该发现的石油储量为900万至1500万桶。

该油田位于一个名为Tubæn地层的新层段，位于海床下1769米，水深345米。该井由Transocean Enabler钻井平台钻探，是一口生产井的勘探延伸。许可证持有者将考虑将该发现与Johan Castberg油田进行整合。

巴伦支海是挪威大陆架勘探程度最低的海域。未来，两座钻井平台将在Johan Castberg和Goliat附近海域钻探生产井和新的勘探井。Equinor将在Johan Castberg附近每年钻探一至两口勘探井。

“Johan Castberg 的储量基数最初估计为 4.5 至 6.5 亿桶，我们明确的目标就是将储量再增加 2.5 至 5.5 亿桶，”Equinor 负责北部勘探与生产业务的高级副总裁 Grete Birgitte Haaland 表示。“为了实现这一目标，我们计划钻探六口新的 IOR（提高采收率）井，并持续开展勘探活动。同时，我们将把 Isflak 开发为一个快速扩建的油田，计划于 2028 年投产。”

Equinor struck oil in exploration well 7720/7-DD-1H, Drivis Tubåen, on the Johan Castberg field in the Barents Sea. According to preliminary estimates the size of the discovery is 9-15 million barrels of oil.

The oil was proven in a new segment called the Tubåen formation 1769 m below the seabed in 345 m of water. The well was drilled by the Transocean Enabler drilling rig as an exploratory extension from a production well. The licensees will consider tie-in of the discovery to the Johan Castberg field.

The Barents Sea is the least explored ocean area on the Norwegian continental shelf. Going forward, two rigs will drill both production wells and new exploration wells in the areas around Johan Castberg and Goliat. Equinor will drill one to two exploration wells annually around Johan Castberg.

“The Johan Castberg volume base originally estimated at 450–650 million barrels, our clear ambition is to increase the reserves by a another 250–550 million barrels,” said Grete Birgitte Haaland, Equinor’s senior vice president for Exploration & Production North. “To realize this, we are planning six new IOR (increased oil recovery) wells and continuous exploration activity. At the same time, we will develop Isflak as a rapid field expansion with planned start-up in 2028.”