ConocoPhillips to evaluate new appraisal data for potential Norwegian Sea development
ConocoPhillips Skandinavia AS confirmed its 2020 Slagugle oil discovery in the Norwegian Sea through a second appraisal well and will now analyze the collected data and evaluate a possible development, the Norwegian Offshore Directorate (NOD) said in a release June 19.
Appraisal well 6507/5-12 S was drilled by the Deepsea Yantai semisubmersible drilling rig about 22 km northeast of Heidrun field to a vertical depth of 2,169 m subsea, 2,260 m measured depth. It was terminated in the Triassic (Red Beds). Water depth at the site is 341 m.
The well is the second appraisal of the 6507/5-10 S (Slagugle) oil discovery and the third exploration well in production license 891.
The Slagugle oil discovery was proven in 2020. Preliminary calculations indicate a resource estimate of 4.9-9.8 million standard cu m of oil equivalent (30.8-61.6 MMboe) in Triassic reservoir rocks (Middle Grey Beds).
Additional volumes in the lower Åre formation and Upper Grey Beds, which are not included in the production test, represent a possible upside potential.
Geological information
The objective of well 6507/5-12 S was to delineate the discovery proven in well 6507/5-10 S (Slagugle), and to conduct a formation test to obtain better understanding of reservoir properties and connectivity in the hydrocarbon-bearing layers.
The well encountered several oil columns in a 188-m interval in the Åre formation and Grey Beds, 75 m of which consist of sandstone with very good reservoir properties, NOD said.
Data collection and sampling have been carried out and a formation test has been completed. The maximum production rate was 650 standard cu m of oil per flow day through a 36/64-in. nozzle opening.
The well has been permanently plugged.
