News Digest (www.upstreamonline.com)

Two exploration wells drilled by Equinor and partner Aker BP in the Sleipner area of the Norwegian North Sea have resulted in significant gas and condensate discoveries, described as Equinor's largest finds of the year. The wells, designated 15/5-8S and 15/5-8A, targeted the Lofn and Langemann prospects within production license PL 1140.

Discovery Details and Location

The preliminary resource estimates indicate the Lofn discovery holds between 22 million and 63 million barrels of oil equivalent (boe) recoverable, while the Langemann discovery holds between 6 million and 50 million boe recoverable. These figures align with the operators' pre-drilling expectations. The discoveries are located in Block PL 1140, approximately 40 kilometers northwest of the Sleipner A field and situated between the Gudrun and Eirin fields. The wells encountered hydrocarbons in the Hugin formation, which consists of sandstones with good reservoir properties. Both were drilled as high-pressure, high-temperature wells to depths of 4,636 meters (Lofn) and 4,932 meters (Langemann).

Development Potential and Strategic Importance

A key advantage of these discoveries is their proximity to existing infrastructure, which enables the potential for quick development to supply the European market. Development could utilize subsea facilities, which are noted for having a limited environmental impact, very low carbon dioxide emissions from production, and strong profitability. The Sleipner area is highlighted as a crucial hub for Norwegian gas exports to Europe. The discoveries were identified using advanced Ocean Bottom Node seismic technology, which provides more precise geological data than traditional methods.

Future Exploration Activity

The discoveries underscore the ongoing potential of the Norwegian continental shelf. Equinor emphasized the importance of continued exploration to provide stable oil and gas deliveries to Europe. The company, together with its partners, plans to drill five additional exploration wells in the area going forward. The drilling rig Deepsea Atlantic, which drilled these wells, will immediately proceed to drill the Sissel prospect near the Utgard field for Equinor and partner Orlen Upstream Norway. Equinor holds a 60% interest in the license, with Aker BP holding the remaining 40%.

5 December 2025



This material is an AI-assisted summary based on publicly available sources and may contain inaccuracies. For the original and full details, please refer to the source link. Based on materials by Vladimir Afanasiev. All rights to the original text and images remain with their respective rights holders.

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