Drilling Update: Mauritania

Roc Oil Company Limited 17 October 2006 17 October 2006 ROC OIL COMPANY LIMITED ('ROC') STOCK EXCHANGE RELEASE EXPLORATION DRILLING UPDATE OFFSHORE MAURITANIA ROC advises that since its last release on 10 October 2006, the 20 inch casing had been set at 2,004 metres and the BOPs run. As at 0800 hours (local time) on 16 October the current operation was drilling ahead in 17 1/2 inch hole at a depth of 2,011 metres. Aigrette-1 is located in a water depth of 1,358 metres approximately 43 km north, northwest of the 2003 Pelican-1 gas discovery and 193 km north, northwest of the Chinguetti Oil Field. The planned Total Depth is 4,925 metres. On completion of Aigrette-1 the Atwood Hunter will return to drill the remaining wells in the Woodside-operated programme: Kibaro-1 exploration well in PSC Area A and Chinguetti-18 development well. Participating interests include: +----------------------------------+-----------+-----------+--------------+ | Company | Dana | Woodside | Woodside | | | Operated | Operated | Operated | | | Block 7 | PSC-A | Chinguetti | | | | |Joint Venture | +----------------------------------+-----------+-----------+--------------+ |Roc Oil group companies | 4.950% | 4.155% | 3.24984% | +----------------------------------+-----------+-----------+--------------+ |Dana Petroleum (E&P) Limited | 36.000% | -- | -- | +----------------------------------+-----------+-----------+--------------+ |Hardman group companies | 16.200% | 24.300% | 19.00800% | +----------------------------------+-----------+-----------+--------------+ |Woodside group companies | 15.000% | 53.846% | 47.38448% | +----------------------------------+-----------+-----------+--------------+ |Gaz de France | 27.850% | -- | -- | +----------------------------------+-----------+-----------+--------------+ |Societe Mauritanienne des | -- | -- | 12.00000% | |Hydrocarbures (formerly GPC) | | | | +----------------------------------+-----------+-----------+--------------+ |BG group companies | -- | 13.084% | 10.23440% | +----------------------------------+-----------+-----------+--------------+ |Premier group companies | -- | -- | 8.12328% | +----------------------------------+-----------+-----------+--------------+ |Fusion group companies | -- | 4.615% | -- | +----------------------------------+-----------+-----------+--------------+ Michelle Manook General Manager - Corporate Affairs For further information please contact: 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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