Offshore Mauritania

Roc Oil Company Limited 15 August 2006 15 August 2006 ROC OIL COMPANY LIMITED ('ROC') STOCK EXCHANGE RELEASE EXPLORATION DRILLING UPDATE OFFSHORE MAURITANIA Further to its Stock Exchange Release on 1 August 2006, ROC advises that the Atwood Hunter drilling rig commenced operations at the Dana-operated Flamant-1 exploration well in Block 8 on 11 August 2006, with the drilling of a pilot hole to check for shallow gas. At 0600 hours (local time) on 13 August 2006, Flamant-1 was drilled to a depth of 1,494 metres where the 36 inch conductor was set, with preparations underway to drill ahead in 26 inch hole. Flamant-1 is located in a water depth of 1,414 metres approximately 340 km north-west of the Chinguetti Oil Field. The planned Total Depth is approximately 3,370 metres. On completion of Flamant-1 the Atwood Hunter will drill a second Dana-operated exploration well, Aigrette-1 in Block 7, before returning the rig to Woodside. Participating interests include: +---------------------------+---------+---------+ | Company | Dana | Dana | | |Operated |Operated | | | Block 8 | Block 7 | +---------------------------+---------+---------+ |Woodside group companies | -- | 15.000%| +---------------------------+---------+---------+ |Hardman group companies | 18.000%| 16.200%| +---------------------------+---------+---------+ |Roc Oil group companies | 2.000%*| 4.950%| +---------------------------+---------+---------+ |Dana Petroleum (E&P) | 24.000%| 36.000%| |Limited | | | +---------------------------+---------+---------+ |Wintershall AG | 25.000%| -- | +---------------------------+---------+---------+ |Gaz de France UK B.V | 31.000%| 27.850%| +---------------------------+---------+---------+ * Option to increase to 5% Michelle Manook For further information please contact: General Manager - Corporate Affairs Dr John Doran on Tel: +61-2-8356-2000 Fax: +61-2-9380-2635 Email: jdoran@rocoil.com.au Or visit ROC's website: www.rocoil.com.au Dr Kevin Hird General Manager Business Development Tel: +44 (0)207 586 7935 Fax: +44 (0)207 722 3919 Email: khird@rocoil.com.au Nick Lambert Bell Pottinger Corporate & Financial Tel: +44 (0)207 861 3232 This information is provided by RNS The company news service from the London Stock Exchange
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