Bo-3X well in the Danish part of the North Sea

April 15, 2008

As operator for DUC, Maersk Oil has encountered hydrocarbons in the Bo-3X exploration well on the Bo South prospect located some 5 kilometers south of the Valdemar - Bo field in the A.P. Møller - Mærsk Concession Area. The Bo-3X well was spudded on 22 March 2008 and was drilled to a total depth of 8,730 feet (2,660 m).

Based on the data gathered in the Bo-3X well, studies will now be initiated to determine if the encountered hydrocarbons are commercial and if a possible development can be integrated with the ongoing development of the Valdemar - Bo Field.

Comment:
Senior Vice President Anders Würtzen says: "We welcome the encountered hydrocarbons in the Bo-3X well and hope to have the commerciality confirmed. Drilling of the well was based on application of high-resolution 3D seismic data and innovative interpretation techniques.”