Drilling Update: Labeidna-1

Roc Oil Company Limited 15 November 2005 15 November 2005 ROC OIL COMPANY LIMITED ('ROC') STOCK EXCHANGE RELEASE DRILLING ACTIVITY UPDATE: LABEIDNA-1 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 Maurtiania since the last report issued on 8 November 2005: PSC Area B: Labeidna-1 Exploration Well The 'Stena Tay' rig drilled Labeidna-1 to the final total depth of 3080 metres where the acquisition of wireline logs, including downhole pressure measurements and fluid sampling, commenced. A preliminary evaluation of these data, indicates that the well intersected an oil bearing interval comprising an interbedded series of thin sands and claystones. Late on 14 November 2005, the collection of oil samples was underway. Additional wireline logs will be acquired to quantify the significance of this discovery. A further announcement will be made when this analysis has been completed. Following wireline logging, the well will be plugged and abandoned as planned.' ROC'S CEO COMMENT Commenting on the results ROC's Chief Executive Officer, Dr John Doran said: 'Until all the subsurface data have been collected and analysed it is not possible to make a definitive comment about the commercial potential of Labeidna-1. However, the information obtained to date suggests that commercialisation of the discovery will be difficult given the thin nature of the sands and a water depth of more than 1,200 metres.' Participating Interests in the Chinguetti Joint Venture and relevant PSC areas are: +---------------------------+-----------+----------+----------+----------+ | Company |Chinguetti | PSC-A | PSC-B | PSC-C, | | | Joint | | | Block 6 | | | Venture | | | | +---------------------------+-----------+----------+----------+----------+ |Woodside group companies | 47.38448% | 53.846% | 53.846% | 37.578% | |(Operator) | | | | | +---------------------------+-----------+----------+----------+----------+ |Hardman group companies | 19.00800% | 24.3% | 21.6% | 22.422% | +---------------------------+-----------+----------+----------+----------+ |Groupe Project Chinguetti | 12.00000% | -- | -- | -- | +---------------------------+-----------+----------+----------+----------+ |BG group companies | 10.23440% | 13.084% | 11.63% | -- | +---------------------------+-----------+----------+----------+----------+ |Premier group companies | 8.12328% | -- | 9.231% | -- | +---------------------------+-----------+----------+----------+----------+ |Roc Oil group companies | 3.24984% | 4.155% | 3.693% | 5.0% | +---------------------------+-----------+----------+----------+----------+ |Fusion group companies | -- | 4. 615% | -- | -- | +---------------------------+-----------+----------+----------+----------+ |Petronas Carigali Overseas | -- | -- | -- | 35.0% | |Sdn Bhd | | | | | +---------------------------+-----------+----------+----------+----------+ See ROC's website for a copy of this release and accompanying map. (http://www.rocoil.com.au/Pages/ASX_Releases/2005_Releases/November-2005.html) 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
UK 100

Latest directors dealings