Drilling Update: Cliff Head-6

28 Feb 2005 07:03

Roc Oil Company Limited28 February 2005 28 February 2005 ROC OIL COMPANY LIMITED STOCK EXCHANGE RELEASE DRILLING ACTIVITY UPDATE: CLIFF HEAD-6 STARTS DRILLING KEY POINT • Cliff Head-6 (CH-6), commenced drilling at the Cliff Head Oil Field on 27 February 2005. By next week's report time, CH-6 is expected to have reached Total Depth. Roc Oil (WA) Pty Ltd, Operator for and on behalf of the WA-286-P Joint Venture(the "Joint Venture"), advises that the ENSCO-56 jack-up drilling rig commenceddrilling the CH-6 well at 1430 on 27 February, 2005 (Australian Western StandardTime ("AWST")). As at 0600 hrs Monday 28 February (AWST) 20" casing had been setand the rig was preparing to drill ahead in 16" hole at a depth of 88 metres. CH-6 is a deviated well located on the central horst about 1.6 km north of theCH-1 discovery well. The well is expected to take approximately 7 days toreached a Total Depth of 1,481 metres. The WA-286-P Joint Venture comprises: Equity Roc Oil (WA) Pty Ltd (Operator)...........................37.5% AWE Oil (Western Australia) Pty Ltd ......................27.5% Wandoo Petroleum Pty Ltd..................................24.0% Voyager (PB) Limited.......................................6.0% CIECO Exploration and Production (Australia) Pty Ltd ......5.0% Bruce Clement For further information please contact:Chief Operating Officer 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