6306/3-1 S

General

Well 6306/3-1 S was drilled to evaluate the Fat Canyon prospect on the Fr ya High south of the Fenja Field in the Norwegian Sea. The primary objective was to prove and evaluate the potential Early Cretaceous to Late Jurassic sandstone reservoir of the Fat Canyon prospect and to test if the reservoir contained economically recoverable hydrocarbons.

Operations and results

Wildcat well 6306/3-1 S was spudded with the semi-submersible installation Borgland Dolphin on 30 September 2021. After drilling the top 36" hole to 338 m a 9 7/8" pilot was drilled to 976 m. The pilot encountered shallow gas at 468 m and 793 m. The upper zone was killed dynamically and drained controllably. The lower zone was plugged back with cement and the pilot was opened to 26" down to 657. The 20" casing was set at 650 and drilling commenced with a 17 1/2" section and 12 1/4" section to 2365 m. Here, the 9 5/8" casing stuck before reaching the planned setting and this led to several days NPT and in the end a technical sidetrack (6306/3-1 ST2) was made with kick-off at 1076 m. This bore holed was drilled to final TD at 2384 m (2384 m TVD) in Basement rocks. The well was drilled with seawater and hi-vis pills down to 657 m, with Glydril Plus from 657 to 2100 m and with Versatec oil-based mud from 2100 m to TD.

The target Rogn Formation reservoir was penetrated from 2318 to 2345 m and consisted of very well cemented calcareous Sandstones and sandy Limestones. The potential Early Cretaceous Lyr Formation reservoir was not present and only Claystone lithologies were encountered. There were no hydrocarbon indicators observed whilst drilling.

Due to dry well no cores were cut,