Mauritania Drilling Update

Roc Oil Company Limited
22 November 2005


22 November 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 Petroleum Ltd. reports the following activity by its wholly-owned
subsidiaries Woodside Mauritania Pty. Ltd., Woodside Energy Ltd. And WEL
Mauritania B.V in offshore Mauritania since the last report issued on 15
November 2005.

                    PSC Area B: Labeidna-1 Exploration Well

The 'Stena Tay' drill rig finished wireline log acquisition on Labeidna-1
exploration well, including the recovery of oil and rock samples to surface. The
well was plugged and abandoned as planned. The 'Stena Tay' drill rig was
released on 20 November 2005 to drill a well for another operator.

Preliminary evaluation of the data acquired in Labeidna-1 indicates that the
well intersected a gross oil bearing interval of 116 metres, comprising an
interbedded series of thin but high quality sands and claystones. Interpretation
of image logs and magnetic resonance logs and other analytical work is
continuing to quantify the total net pay thickness. These results will be
incorporated into an assessment of the commercial potential of the Labeidna
accumulation.

Woodside does not plan to issue further announcements regarding operations in
Mauritania until the 'Stena Tay' returns to drill Woodside-operated wells later
in 2005, but will do so if necessary to comply with its continuous disclosure
obligations under the ASX Listing Rules.

                                    General

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

The locations of planned exploration wells and the Chinguetti Oil Field are
shown on the attached map*.'

Participating Interests in the Chinguetti Joint Venture and relevant PSC areas
are:

   +---------------------------+-----------+----------+----------+----------+
   |          Company          |Chinguetti |  PSC-A   |  PSC-B   |  PSC-C,  |
   |                           |   Joint   |          |          | Block 6  |
   |                           |  Venture  |          |          |          |
   +---------------------------+-----------+----------+----------+----------+
   |Woodside group companies   | 47.38448% | 53.846%  | 53.846%  | 37.578%  |
   |(Operator)                 |           |          |          |          |
   +---------------------------+-----------+----------+----------+----------+
   |Hardman group companies    | 19.00800% |  24.3%   |  21.6%   | 22.422%  |
   +---------------------------+-----------+----------+----------+----------+
   |Groupe Project Chinguetti  | 12.00000% |    --    |    --    |    --    |
   +---------------------------+-----------+----------+----------+----------+
   |BG group companies         | 10.23440% | 13.084%  |  11.63%  |    --    |
   +---------------------------+-----------+----------+----------+----------+
   |Premier group companies    | 8.12328%  |    --    |  9.231%  |    --    |
   +---------------------------+-----------+----------+----------+----------+
   |Roc Oil group companies    | 3.24984%  |  4.155%  |  3.693%  |   5.0%   |
   +---------------------------+-----------+----------+----------+----------+
   |Fusion group companies     |    --     | 4. 615%  |    --    |    --    |
   +---------------------------+-----------+----------+----------+----------+
   |Petronas Carigali Overseas |    --     |    --    |    --    |  35.0%   |
   |Sdn Bhd                    |           |          |          |          |
   +---------------------------+-----------+----------+----------+----------+

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

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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