Mauritania Drilling Update

RNS Number:8717I
Roc Oil Company Limited
22 February 2005




22 February 2005

                        ROC OIL COMPANY LIMITED ("ROC")
                              STOCK EXCHANGE RELEASE

                      MAURITANIA OFFSHORE DRILLING UPDATE

ROC advises that the following release was made earlier today by Woodside
Petroleum Limited:

"Woodside Mauritania Pty Ltd, a wholly-owned subsidiary of Woodside Petroleum
Ltd., reports the following activity offshore Mauritania since the last report
issued on 15 February 2005.

                                 PSC-B, Block 4
                    Tiof-6 and Chinguetti Development wells

Tiof-6 Appraisal well
The 'West Navigator' drillship successfully completed production testing of the
Tiof-6 appraisal well. As previously reported, the well produced oil during the
main flow period of the test at a stable rate of approximately 9,150 barrels per
day, constrained by a 72/64 inch choke.

At midnight on 21 February 2005, the 'West Navigator' was suspending the well as
a potential future oil production well prior to resuming operations on
Chinguetti Development wells.

Chinguetti Development wells
The 'Stena Tay' drill rig continued operations on Chinguetti Development wells.
Woodside does not plan to issue announcements regarding operations on Chinguetti
development wells, but will do so if necessary to comply with its continuous
disclosure obligations under the ASX Listing Rules.

All reported drilling depths are referenced to the rig rotary table and all
times are Universal Time (UTC) (Mauritanian time).

The locations of the Chinguetti Oil Field, the Tiof and Banda discoveries and
exploration wells are shown on the attached map*.

Wells are expected to be drilled in two production sharing contract areas during
the remainder of the 2005 campaign."

Participating Interests in the areas are:

          +-----------------------------------+-----------+----------+
          |              Company              |   PSC-A   |  PSC-B   |
          +-----------------------------------+-----------+----------+
          |Woodside group companies (Operator)|  53.846%  | 53.846%  |
          +-----------------------------------+-----------+----------+
          |Hardman group companies            |   24.3%   |  21.6%   |
          +-----------------------------------+-----------+----------+
          |BG group companies                 |  13.084%  |  11.63%  |
          +-----------------------------------+-----------+----------+
          |Premier group companies            |    --     |  9.231%  |
          +-----------------------------------+-----------+----------+
          |Fusion group companies             |  4. 615%  |    --    |
          +-----------------------------------+-----------+----------+
          |Roc Oil group companies            |  4.155%   |  3.693%  |
          +-----------------------------------+-----------+----------+


*Map attached to the copy of this release on ROC's website
(http://www.rocoil.com.au/Pages/ASX_Releases/2005_Releases/February-2005.html)


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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