Sierra discovery sets Dutch sector ‘firsts’

GDF Suez E&P Nederland has discovered gas in the Sierra prospect in the Dutch North Sea.

Offshore staff

PARIS – GDF Suez E&P Nederland has discovered gas in the Sierra prospect in the Dutch North Sea.

The jackup Noble Ronald Hoope spudded the L5-12 well earlier this year, with 1.2 MMcm/d (42.38 MMcf/d) of gas tested from the Lower Slochteren reservoir.

Currently, the well is at 5,450 m (17,880 ft). GDF Suez claims that the static reservoir pressure of 1,023 bar (14,837 psi) and the reservoir temperature of 183 ºC (361 ºF) both constitute new records for wells on the Dutch shelf.

Work continues to assess the size of the find, but reserves should be sufficient to justify development, with export via the company’s L5-FA platform and the NOGAT pipeline system.

GDF Suez also believes it may have opened a new play area on the Dutch shelf, in which the traditional Permian reservoirs are buried at a lower than usual depth.

09/02/2010

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