Drilling Update: Cliff Head-6

RNS Number:3855J
Roc Oil Company Limited
07 March 2005






7 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, advised that the Cliff Head-6 well ("CH-6") was drilled to a depth of
1,368 metres measured depth on 5 March 2005 at which time coring operations were
commenced. The preliminary estimate of top of the reservoir has been interpreted
to be at 1,373 metres measured depth, based on shows, providing a gross vertical
reservoir section of approximately 70 metres above the field wide oil water
contact. The reservoir section will be better defined by open hole logging which
is planned for the well after coring has been completed and the well has been
drilled to the planned total depth of 1,497 metres.

The current operation on CH-6 at 0600 on 7 March 2005 was preparing to cut core
#3 at a depth of 1,400 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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