Mauritania Drilling Update

Roc Oil Company Limited 26 October 2004 26 October 2004 ROC OIL COMPANY LIMITED ('ROC') STOCK EXCHANGE RELEASE MAURITANIA OFFSHORE DRILLING UPDATE ROC advises that the following release was made earlier today by Woodside Petroleum Limited: 'Woodside Mauritania Pty Ltd, a wholly-owned subsidiary of Woodside Petroleum Ltd., reports the following activity offshore Mauritania since the last report issued on 19 October 2004. PSC-C2 Dorade-1 Dorade-1 Exploration well The 'Stena Tay' rig completed plugging and abandonment operations at Dorade-1 on 20 October 2004. The rig then moved to the Capitaine-1A location. PSC-B, Block 4 Tiof-3 ST2 and Capitaine Tiof-3 Appraisal well Two cores were cut in the Tiof-3 ST2 sidetrack well following which the well was drilled to a total depth of 2,980 metres, where wireline logs were run. At midnight on 25 October 2004 the current operation was making preparations to flow test the well. Capitaine The Capitaine-1A exploration well was spudded with the 'Stena Tay' rig on 22 October 2004 in 1,686 metres of water. The 17 1/2 inch hole has been drilled to a depth of 2,413 metres, and 13 3/8 inch casing set at 2,407 metres. At midnight on 25 October 2004 the current operation was preparing to drill ahead to the target interval. All reported drilling depths are referenced to the rig rotary table and all times are Universal Time (UTC) (Mauritanian time). The locations of the Chinguetti Oil Field, the Tiof and Banda discoveries and exploration wells to be drilled early in the 2004-05 drilling campaign are shown on the attached map*. Wells are expected to be drilled in three production sharing contract areas during the campaign.' Participating Interests in those areas are: +-------------------------------------+-----------+----------+----------+ | Company | PSC-A | PSC-B | PSC-C2 | +-------------------------------------+-----------+----------+----------+ |Woodside group companies (Operator) | 53.846% | 53.846% | 48% | +-------------------------------------+-----------+----------+----------+ |Hardman group companies | 24.3% | 21.6% | 28.8% | +-------------------------------------+-----------+----------+----------+ |BG group companies | 13.084% | 11.63% | -- | +-------------------------------------+-----------+----------+----------+ |Premier group companies | -- | 9.231% | -- | +-------------------------------------+-----------+----------+----------+ |Fusion group companies | 4. 615% | -- | -- | +-------------------------------------+-----------+----------+----------+ |Roc Oil group companies | 4.155% | 3.693% | 3.2% | +-------------------------------------+-----------+----------+----------+ |Energy Africa | -- | -- | 20% | +-------------------------------------+-----------+----------+----------+ *Map attached to the copy of this release on ROC's website (http://www.rocoil.com.au/Pages/ASX_Releases/2004_Releases/October-2004.html) Bruce Clement For further information pleasecontact: Chief Operating Officer Dr John Doran on Tel: +61-2-8356-2000 Fax: +61-2-9380-2635 E-mail: 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 Ann-Marie Wilson/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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