Drilling Update: Mauritania

Roc Oil Company Limited 26 September 2006 26 September 2006 ROC OIL COMPANY LIMITED ('ROC') STOCK EXCHANGE RELEASE EXPLORATION DRILLING UPDATE OFFSHORE MAURITANIA Further to its Stock Exchange Release on 19 September 2006, ROC advises that the Dana-operated Flamant-1 exploration well in Block 8 reached a Total Depth of 3,299 metres Below Rotary Table ('mBRT'). Analysis of the wireline and drill data indicates that the well has not encountered any significant hydrocarbons. As at 0600 hours (local time) on 25 September 2006 preparations were underway to plug and abandon. On completion of Flamant-1 the Atwood Hunter will drill a second Dana-operated exploration well, Aigrette-1 in Block 7, before returning to Woodside. Participating interests include: +---------------------------+---------+---------+ | Company | Block 8 | Block 7 | +---------------------------+---------+---------+ |Roc Oil group companies | 2.000%* | 4.950% | |*Option to increase to 5% | | | +---------------------------+---------+---------+ |Dana Petroleum (E&P) | 41.500% | 63.850% | |Limited | | | +---------------------------+---------+---------+ |Wintershall AG | 25.000% | -- | +---------------------------+---------+---------+ |Hardman group companies | 18.000% | 16.200% | +---------------------------+---------+---------+ |Woodside group companies | -- | 15.000% | +---------------------------+---------+---------+ |Gaz de France UK B.V | 13.500% | -- | +---------------------------+---------+---------+ For further information please contact: Michelle Manook Dr John Doran on General Manager - Corporate Affairs 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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