Drilling Update: Cliff Head-6

RNS Number:0916J
Roc Oil Company Limited
28 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 commenced
drilling the CH-6 well at 1430 on 27 February, 2005 (Australian Western Standard
Time ("AWST")). As at 0600 hrs Monday 28 February (AWST) 20" casing had been set
and 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 the
CH-1 discovery well. The well is expected to take approximately 7 days to
reached 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

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