Chinguetti Schedule & Costs

Roc Oil Company Limited
20 September 2005



20 September 2005

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

                          CHINGUETTI SCHEDULE AND COST

Consistent with ROC's release dated 8 September 2005, the operator of the
Chinguetti Oil and Gas Field Development made the following release earlier
today regarding the project's schedule and budget:

'The Woodside-operated offshore Chinguetti oil development in Mauritania remains
on schedule for first oil in February 2006. The project is 88% complete.

The Chinguetti joint venture has completed an update of estimated project costs.
Known project costs to complete the installation and start-up total US$705
million. An additional US$45 million has been set aside to cover unplanned
contingencies that may occur during the offshore, deep-water installation
program.

The current project cost estimate is primarily a result of increased drilling
scope due to complex geology, resulting in extra time to drill sidetracks, as
well as additional costs to prepare the subsea flowlines for installation.

The Chinguetti joint venture is operated under a production sharing contract
subject to project cost recovery. Chinguetti joint venture interests are:
Woodside 47.38448%; Hardman Resources 19.00800%, BG Group 10.23440%, Premier
8.12328%, Roc Oil 3.24984% and Groupe Projet Chinguetti 12%.'


Michelle Manook                          For further information please contact:
General Manager - Corporate Affairs                             Dr John Doran on
                                                            Tel: [phone]
                                                            Fax: [phone]
                                                     Email: [e-mail]
                                       Or visit ROC's website: www.rocoil.com.au

                                                                   Dr Kevin Hird
                                            General Manager Business Development
                                                       Tel:  [phone]
                                                       Fax:  [phone]
                                                     Email:  [e-mail]

                                                                    Nick Lambert
                                            Bell Pottinger Corporate & Financial
                                                       Tel:  [phone]



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