Jette update

Det norske oljeselskap ASA reported on Wednesday May 22nd, that
production had commenced from the North Sea Jette field.

Jette is developed with two subsea wells, tied back to the ExxonMobil
operated Jotun platform.
Both wells are now in production and several tests have been carried
out. Based on initial results from the wells, Det norske expects that
the gross initial production from the field will be in the range of
12,000 to 15,000 barrels of oil. Jette is a small field and there are
uncertainties with respect to future production rates.

The company has previously indicated an initial production level of
about 10,000 barrels of oil per day.

Det norske publish production volumes on a monthly basis on its web
site: http://www.detnor.no/en/our-assets/production.

Contact:

Knut Evensen, VP Investor Relations, tel.: +47 950 77 622
About Det norske:
Det norske oljeselskap ASA (DETNOR) is an active exploration company on
the Norwegian Continental Shelf. The ambition is to grow into a full
cycle E&P company that participates in all parts of the value chain,
from exploration to production. Det norske's headquarters is in
Trondheim. The company also has offices in Oslo and Harstad.

Det norske is listed on the Oslo Stock Exchange with the ticker
"DETNOR".
More about Det norske at www.detnor.no/en