Drilling Update: Cliff Head-6

RNS Number:5650J
Roc Oil Company Limited
10 March 2005






10 March 2005



                            ROC OIL COMPANY LIMITED
                              STOCK EXCHANGE RELEASE


                     DRILLING ACTIVITY UPDATE: CLIFF HEAD-6


Roc Oil (WA) Pty Limited, Operator for and on behalf of the WA-286-P Joint
Venture, advises that, as of 0600 hrs Australian Western Standard Time, the
Cliff Head-6 well ("CH-6") in the Cliff Head Oil Field in the offshore Perth
Basin, Western Australia, had been drilled to a Total Depth of 1,530 metres and
logging was is in progress.

Preliminary analysis of the log data received to date indicates that the well
has intersected a 71 metre vertical gross oil column with an oil-water contact
consistent with the field-wide contact. Net to gross is approximately 70%.
Porosities in the reservoir sequence are generally in the mid to high teens with
sections above 20% porosity. Because CH-6, located in the main horst part of the
field, has been drilled at an angle of approximately 40 degrees the gross
reservoir interval intersect by the well is 93 metres. The forward plan for CH-6
is to complete logging, run casing and suspend the well as a potential future
oil producer.

The Joint Venture plans to meet on 11 March 2005 to consider a Final Investment
Decision for the project.

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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