ConocoPhillips Skandinavia AS drilled appraisal well 6507/5-11 in Norwegian Sea production license (PL) 891 to help delineate oil discovery 6507/5-10 S (Slagugle) (OGJ Online, Dec. 22, 2020). Collected data will be analyzed and future delineation and possible development will be considered, according to a May 30 release from the Norwegian Petroleum Directorate.
The well was drilled by the Transocean Norge drilling rig about 22 km northeast of Heidrun field, and about 270 km north of Kristiansund in 351 m of water. The well was drilled to a vertical depth of 2,273 m subsea. It was terminated in the Red Beds in the Triassic.
The primary exploration target was to delineate the discovery and achieve a better understanding of in-place and recoverable volumes for the hydrocarbon-bearing layers encountered in the well. The secondary target was to prove petroleum in Palaeocene reservoir rocks in the Tang formation.
In the primary target, the well encountered sandstone layers in the Åre formation in the Lower Jurassic and Grey Beds in the Upper Triassic totaling 122 m with very good reservoir quality, NPD said. No reservoir was encountered in the secondary exploration target in the Tang formation. The well is dry.
Three successful injectivity tests were conducted. Injection rate was about 1,000 standard cu m/d for each test. The tests showed good flow properties in all zones and communication in the Grey Beds between wells 6507/5-10 S and 6507/5-11.
Preliminary estimates indicate that the size of the discovery is 6-13 million standard cu m of oil equivalent.
Data acquisition and sampling have been carried out, and the well has been permanently plugged.
Transocean Norge is now drilling wildcat well 6507/4-3 S in production license 1064 in the Norwegian Sea, where ConocoPhillips Skandinavia AS is the operator.
ConocoPhillips is operator of PL 891 (80%) with partner Pandion Energy AS (20%).