Mauritania Drilling Update

Roc Oil Company Limited
28 September 2004



28 September 2004

ROC OIL COMPANY LIMITED ('ROC')

STOCK EXCHANGE RELEASE

                      MAURITANIA OFFSHORE DRILLING UPDATE

ROC advises that the following release was made this afternoon 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 21 September 2004.

PSC-B, Block 4 Tevet-1, Tiof-4 and Tiof-3

Tevet-1
The drill ship 'West Navigator' temporarily suspended and moved off the Tevet-1
exploration well in 489 metres of water on 22 September, as planned, after
drilling the top hole section and setting casing to a depth of 1380 metres. The
bottom hole section, containing the primary interval in the well, is expected to
be drilled later by the 'Stena Tay'. The well has a proposed total depth (PTD)
of approximately 2690 metres

Tiof-4
The Tiof-4 appraisal well was spudded by the drill ship, 'West Navigator', on 23
September 2004 in 1119 metres of water. The top hole section was drilled to a
depth of 2108 metres and casing run and cemented. The 'West Navigator'
temporarily suspended the well as planned and moved off location on September
26. The bottom hole section, containing the primary interval in the well, is
expected to be drilled later by the 'Stena Tay'. The well has a PTD of
approximately 2960 metres.

Tiof-3
The Tiof-3 appraisal well was spudded by the drill ship, 'West Navigator', on 26
September 2004 in 1198 metres of water. The 17-1/2 inch hole was drilled to a
depth of 2150 metres. At midnight 27 September the rig was preparing to run
casing. The well has a PTD of approximately 2900 metres.

Chinguetti Development Drilling
The drill rig 'Stena Tay' continues drilling operations on Chinguetti
Development wells.

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 to be drilled early in the 2004-05 drilling campaign are shown
on the attached map*.

Wells are expected to be drilled in three production sharing contract areas
during the campaign.'

Participating Interests in those areas are:

   +-------------------------------------+-----------+----------+----------+
   |               Company               |   PSC-A   |  PSC-B   |  PSC-C2  |
   +-------------------------------------+-----------+----------+----------+
   |Woodside group companies (operator)  |  53.846%  | 53.846%  |   48%    |
   +-------------------------------------+-----------+----------+----------+
   |Hardman group companies              |   24.3%   |  21.6%   |  28.8%   |
   +-------------------------------------+-----------+----------+----------+
   |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%  |   3.2%   |
   +-------------------------------------+-----------+----------+----------+
   |Energy Africa                        |    --     |    --    |   20%    |
   +-------------------------------------+-----------+----------+----------+

*The map is attached to the copy of this release on ROC's website 
(http://www.rocoil.com.au/Pages/ASX_Releases/2004_Releases/September-2004.html)

Bruce Clement                           For further information please contact:
Chief Operating Officer                                        Dr John Doran on
                                                           Tel: [phone]
                                                           Fax: [phone]
                                                   E-mail: [e-mail]
                                                        Or visit ROC's website:
                                                              www.rocoil.com.au


                                



                      This information is provided by RNS
            The company news service from the London Stock Exchange