ConocoPhillips has completed the drilling of a second appraisal well, 6507/5-12 S, at the Slagugle oil discovery in the Norwegian Sea, under production licence 891.
The well was drilled to delineate the discovery confirmed in well 6507/5-10 S (Slagugle) and to perform a formation test to gain a deeper understanding of the reservoir properties and connectivity within the hydrocarbon-bearing layers.
The Slagugle oil discovery was initially proven in 2020, with preliminary estimates suggesting resources in the range of 30.8 million to 61.6 million barrels of oil equivalent (mboe) in Triassic reservoir rocks.
The appraisal well was drilled approximately 22km north-east of the Heidrun field and 270km north of Kristiansund.
It is the third exploration well drilled in production licence 891, which was awarded during the Awards in Predefined Areas (APA) in 2016.
The Deepsea Yantai drilling rig, operating in a water depth of 341m, was utilised for the drilling.
The well results have confirmed the presence of oil and provided essential data for potential development.
It encountered an 188m interval in the Åre Formation and Grey Beds, 75m of which included sandstone exhibiting very good reservoir properties.
The appraisal well reached a vertical depth of 2,169m below sea level and was terminated in the Triassic Red Beds.
A successful formation test was completed, achieving a maximum production rate of 650 standard cubic metres of oil per flow day through a 36/64in nozzle opening.
Despite a dry well in a previous attempt to delineate the discovery in 2022, the latest appraisal has provided encouraging results.
The licensees, led by ConocoPhillips, will now proceed to analyse the collected data and evaluate the viability of developing the discovery.
The possibility for additional volumes in the lower Åre Formation and Upper Grey Beds, which were not included in the production test, represents an upside potential for the project.
After the completion of operations, the well was permanently plugged and abandoned.
