MOL Norge and license partners Lundin and Wintershall DEA, had high expectations for 3/7-11 S well, drilling the Vinstra/Otta prospect on the Mandal High close to the Danish maritime border. This is their second attempt in this area, after the Driva/Oppdal failure.
Both prospects are dry, according to an NPD press release.
The primary exploration target was to prove petroleum in reservoir rocks in the Permian Rotliegende Gp in the Vinstra prospect. The results are pessimist, as no reservoir rocks were encountered in the Rotliegende group.
The secondary target was to test the reservoir properties and hydrocarbon potential of the Middle Jurassic sandstones in the Otta prospect. Here, the well encountered thin, mainly tight sandstone layers with indications of petroleum (upper part of the Vestland group).
Vinstra is interpreted as a huge 4-way dip closure (ca 400 square km) at Rotliegend level. Despite the excellent new seismic data, where a flat event has been identified and interpreted as the OWC, the reservoir is missing.
The prospects had a high volume potential of more than 555 MMboe.