DONG drills Oselvar discovery well

DONG E&P Norge, operator of production license 274, has carried drilled appraisal well 1/3-10A at the 1/3-6 discovery (named Oselvar) in the southern North Sea.

Offshore staff

STAVANGER, Norway -- DONG E&P Norge, operator of production license 274, has carried drilled appraisal well 1/3-10A at the 1/3-6 discovery (named Oselvar) in the southern North Sea.

The well was a sidetrack to appraisal well 1/3-10, to investigate the underlying water zone and to improve delineation of the Oselvar discovery.

Drilling was from theMærsk Guardian at a water depth of 72 m (236 ft). The objective was to measure pressures and acquire samples from the water zone below the already proven oil/condensate column. According to the company, both objectives were accomplished and the data acquisition is now finished.

The well was drilled to 3,632 m (11,916 ft) and terminated in the early Palaeocene 680 m (2,231 ft) southwest of 1/3-10. Preliminary calculations of the reservoir parameters in the sidetrack correspond with the results from 1/3-10.

The wells show that the size of the total discovery is within the uncertainty range of 2 - 6 MMcm producible oil/condensate and 2 - 4 Bcm producible gas.

The company expects to submit a plan for development and operation of Oselvar during 2008. The well will now be permanently plugged and abandoned.

02/08/2008

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