Appraisal of gas/condensate discovery boosts resource estimate

Wintershall Dea Norge, a subsidiary of Germany’s oil and gas business Wintershall Dea, has actually carried out appraisal activities with among Transocean’s rigs. This resulted in a small boost in the resource price quote for a gas/condensate discovery near the Dvalin field in the Norwegian Sea.

Wintershall Dea’s appraisal well 6507/4 -4 S was drilled to verify the size of the previous discovery6507/4 -2 S (Adriana)which was made in 2021, showing gas/condensate in tank rocks from the Cretaceous Lysing Formation, along with gas and oil in tank rocks from the Cretaceous Lange Formation.

While the main expedition target for well 6507/4 -4 S was to validate the size of the discovery in the Lysing Formation (Adriana), consisting of examining the tank’s lateral advancement, the main expedition target for the sidetrack 6507/4 -4 A was to verify the size of the gas/oil discovery in the Lange Formation (Sabina).

The initial computations following appraisal drilling activities position the size of the discovery at 4-7 million basic cubic meters (Sm³of recoverable oil equivalent while the operator’s previous resource quote for the gas/condensate discovery was 3-5 million Sm³of recoverable oil equivalent.

Wintershall Dea is the operator of the production license 211 CSwhere the appraisal well was drilled, and Petoro, Aker BP, and PGNiG are the other licensees. The well was drilled by the Transocean Norge semi-submersible rig 14 kilometers north of theDvalin fieldand 270 kilometers north of Kristiansund.

The appraisal well 6507/4 -4 S experienced a 21-meter gas column in the Lysing Formation with sandstone layers amounting to about 16 meters with excellent to great tank quality. The gas/water contact was shown at 2,885 meters listed below water level.

After the appraisal well 6507/4 -4 S was drilled to a vertical depth of 3,039 meters and a determined depth of 3,067 meters listed below water level, it was ended in the Lange Formation from the Cretaceous. The water depth at the website is 446 meters and the well has actually been completely plugged and deserted.

According to the Norwegian Offshore Directorate (NOD), the drilling of sidetrack 6507/4 -4 A, which intended to mark gas and oil discovery 6507/4 -2 S (Sabina) in the Lange Formation, needed to be terminated due to technical drilling concerns. The licensees will think about connecting the discovery to existing facilities in the location.

While the appraisal well was not formation-tested, comprehensive information acquisition and tasting were performed. The Transocean Norge drilling rig is now headed to production license 475 BS in the Norwegian Sea, where the Wintershall Dea-operated Maria field liesWhile the semi-sub won a17-well agreementin September 2022,a one-well extensionwith Wintershall Dea was likewise just recently protected for the rig.

The initial agreement, with day rates in between $350,000 and $430,000, was granted after 2 oil and gas business, Wintershall Dea and OMV, participated in a special collaboration with Transocean for using the rig in the duration 2023 to 2027.

The Transocean Norge rig is theSemi-submersible rigthat protected the Abate (Power+) notation, developed to show the very best market practices in greenhouse gas reduction for overseas systems.