Perth Basin, Offshore WA

31 Jul 2006 07:02

Roc Oil Company Limited31 July 2006 31 July 2006 ROC OIL COMPANY LIMITED ("ROC") STOCK EXCHANGE RELEASE EXPLORATION DRILLING UPDATE PERTH BASIN, OFFSHORE WESTERN AUSTRALIA Roc Oil (WA) Pty Limited advises that since its last Stock Exchange Release on25 July 2006 regarding the Moondah-1 exploration well in TP/15, the well hasbeen drilled to a Total Depth of 1,450 metres below Rotary Table withoutencountering significant hydrocarbons. As at 0600 hours (Western Standard Time) on 31 July 2006, operations wereunderway to plug and abandon the well prior to the ENSCO 67 jack-up drill rigrelocating to commence drilling operations at the Frankland-1 exploration wellin WA-286-P. Moondah-1 is located in TP/15 in the offshore Perth Basin, 17 km north of theCliff Head Oil Field. The TP/15 Joint Venture comprises: Roc Oil (WA) Pty Limited (Operator) 20.0%ARC Energy Limited 45.0%AWE Oil (Western Australia) Pty Ltd 25.0%Westranch Holdings Pty Limited 10.0% 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