32/4-3 S

General

Well 32/4-3 S is the replacement well for 32/4-3. It was drilled to test the Gladsheim prospect on the Horda Platform in the Stord Basin Area. The prospect is located approximately 25 km east of Troll East and 30 km from shore. The primary objective was to prove oil migration into the Sognefjord Formation and establish the corresponding fluid contacts. Secondary objective was to test the gas potential in Mid- and Early Jurassic Brent Group, Johansen Formation and Statfjord Group. A tertiary objective was to verify Late Jurassic shales sealing capacity and acquire data to confirm CO2 storage potential and to extend the well into the Lunde Formation for this reason.

Operations and results

The well had a shallow gas Class 1, based on the shallow gas experience from the main well NO 32/4-2. Acoustic logs in 32/4-2 indicated gas at a depth between 440-510 m.

Wildcat well 32/4-3 S was spudded with the semi-submersible installation West Hercules on 23 September 2019. After setting the conductor at 372.40 m, an 8 ½” pilot hole was drilled to 461 m and the well was visually flow checked and observed stable. Well was then displaced to displacement mud and the BHA lubricated to 361 m when gas bubbles were observed. The BHA was run back to TD and well displaced back to sea water and flow checked again. An increasing amount of gas was observed before displacing back to 1.30 sg mud. No water flow was observed. With a stable well the BHA was lubricated out of hole. The pilot hole was then cemented back, and a 26” section drilled to seal off the shallow gas zone with a 20” Casing. BOP was set and drilling commenced without further significant issues. TD was reached at 2017 m (2000 m TVD) m in the Late Triassic Lunde Formation. The well was dri