Wildcat 6608/11-9, first well in PL842 (APA 2015), drilled about 13 km northeast of the Norne field, had as primary exploration target the reservoir rock in the Upper Jurassic Rogn Fm, and as a secondary target to examine reservoir development in the Upper Jurassic intra Melke Fm sandstones.
Godalen and Lynghaug were drilled on the Sør High, just west of Hegeland Basin.
These two prospects are part of Cairn Energy’s drilling campaign for UK and Norway, where four wells are planned to be drilled in 2019: Presto (NCS, dry), Lynghaug (NCS, dry), Godalen (NCS, dry), Chimera (UKCS, estimated 160 MMboe).
The Rogn and Melke Fm are part of the Middle-Upper Jurassic Viking Gp, which is present over most of the Trøndelag Platform, but thins toward the Nordland Ridge where it is locally absent. The dominant lithology of the Viking Gp is mudstones and siltstones, except for locally developed sands (Rogn Fm) in the Draugen field area and on the Frøya High.
The prognosed Rogn Fm was not present, but the well encountered 118 m of alternating layers of claystone, siltstone and sandstone belonging to Melke Fm. About 40 m was sandstone with moderate reservoir quality.