Wintershall's voluntary offer for Revus Energy ASA: Approval obtained from the Norwegian Ministry of Petroleum and Energy

Kassel. Wintershall today announces that it has received approval from the Norwegian Ministry of Petroleum and Energy (the "MPE") for consummation of the voluntary offer from Wintershall Norwegen Explorations- und Produktions-GmbH ("Wintershall") dated 4 November 2008 for all the shares of Revus Energy ASA, Norway, ("Revus").

Consequently, the earlier obtained approval from the Norwegian Ministry of Finance, which was conditional upon approval from the MPE, is now also effective. Therefore, all conditions of the offer other than the condition set forth in section 2.6 (vi) regarding "Conduct of Business", which applies until settlement of the offer, are now satisfied. Completion of the transaction is expected until 19 December 2008.

Wintershall intends to resolve a compulsory acquisition in accordance with section 6-22(3) of the Norwegian Securities Trading Act cf. section 4-25 of the Public Limited Liability Companies Act. The compulsory acquisition is expected to be made immediately after the completion of the transaction.

All information on the offer by Wintershall is available on the Internet at www.wintershall.com/revusoffer.

Wintershall, based in Kassel, Germany, is a wholly-owned subsidiary of BASF in Ludwigshafen. The company has been active in the exploration and production of crude oil and natural gas for over 75 years. Wintershall focuses on selected core regions, where the company has built up a high level of regional and technological expertise. Today the company is Germany's largest producer of crude oil and natural gas and with its subsidiary, WINGAS, it is also an important gas supplier on the German and European market.

P-WH-08-27