Invitation – Presentation of Q2 and First Half 2008 Financial Results

Det norske oljeselskap ASA (”DETNOR”) will present its financial results for the second quarter and first half of 2008 in Oslo on Tuesday, 19 August. The venue is Shippingklubben, Haakon VII gt. 1, at 08:15 a.m. (CET). Breakfast will be served from 08:00. Please submit your registration to the Norwegian Society of Financial Analysts, using the registration form at www.finansanalytiker.no, by 12:00 (noon) Monday, 18 August. The company will be represented by CEO Erik Haugane, CFO Finn Øistein Nordam, and VP Investor Relations Knut Evensen.

About Det norske:

Det norske is the second-largest operating company on the Norwegian Continental Shelf with 24 operatorships and interests in a total of 46 licenses. In 2008, the company will participate in the drilling of eight to nine exploration wells, whereof three are operated by us. Det norske`s scope of activities is limited to the Norwegian Continental Shelf (NCS).

Det norske currently employs a staff of 120, and the strong growth rate continues. The company`s registered office is located in Trondheim. Headquarter functions are divided between Oslo and Trondheim. The company also has offices in Harstad and Stavanger.

Det norske oljeselskap (`DETNOR`) emerged as a result of the combination between Pertra and DNO`s Norwegian operations.

For more information about Det norske, see www.detnor.no

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