Offshore Western Australia

Roc Oil Company Limited 14 August 2006 14 August 2006 ROC OIL COMPANY LIMITED ('ROC') STOCK EXCHANGE RELEASE EXPLORATION DRILLING UPDATE PERTH BASIN, OFFSHORE WESTERN AUSTRALIA Further to its Stock Exchange release on 31 July 2006, Roc Oil (WA) Pty Limited advises that the ENSCO 67 jack-up drilling rig relocated to the Frankland-1 exploration well location in WA-286-P on 11 August 2006. Due to adverse weather conditions it was not possible to commence drilling the Frankland-1 exploration well prior to the expiry of the drilling rig contract. As a result the ENSCO 67 was released on 11 August 2006 and the offshore Perth Basin development and exploration drilling programme concluded. Participating interests in WA -286- P include: +------------------------------------------+---------------+ | Participant | WA-286-P | +------------------------------------------+---------------+ |Roc Oil (WA) Pty Limited (Operator) | 37.5%| +------------------------------------------+---------------+ |ARC (Offshore PB) Limited | 6.0%| +------------------------------------------+---------------+ |AWE Oil (Western Australia) Pty Ltd | 27.5%| +------------------------------------------+---------------+ |Wandoo Petroleum Pty Ltd | 24.0%| +------------------------------------------+---------------+ |CIECO Exploration & Production (Australia)| 5.0%| |Pty Ltd | | +------------------------------------------+---------------+ 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 FQVBBBBE
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