Drilling Update - Mauritania

Roc Oil Company Limited
13 December 2005



13 December 2005



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

                            DRILLING ACTIVITY UPDATE
                 FAUCON-1 EXPLORATION WELL, OFFSHORE MAURITANIA

ROC advises that since the Company's last 'Drilling Activity Update' on 6
December, 2005, the 'Stena Tay' drilling rig has continued operations on the
Faucon-1 exploration well in Block 1, offshore Mauritania.

During the week the well drilled an 8 1/2' hole from 3,536 metres to the current
depth of 3,674 metres. Due to increasing formation pressure it was decided to
run a 7' liner and this has now been cemented in place. The current operation is
preparing to drill ahead in 6' hole to the planned total depth of 4,237 metres.

An intermediate logging programme was completed over the Upper Cretaceous
interval, above 3,536 metres. This included reservoir pressure measurements and
reservoir fluid sampling. Initial interpretation of the data collected indicates
the presence of two hydrocarbon bearing sandstones, some 150 metres apart. The
lower sandstone has a gross thickness of approximately 40 metres of which the
upper 10 metres contains a hydrocarbon which appears to be a light oil or a
liquids rich gas-condensate. The upper sandstone is approximately four metres
thick and is currently interpreted to be gas bearing. The precise composition of
the hydrocarbon fluids recovered from both zones will not be finally determined
until the fluid samples have been fully analysed in an onshore laboratory.

The logged interval appears to correspond to an upper reservoir target objective
and there is potential for other sands to be encountered in the > 500 metre
section which is yet to be drilled.

Faucon-1 is located in 1,162 metres of water, 140 km south of the Chinguetti Oil
Field.

The Joint Venture Interests in Block 1 are:
+----------------------------------------+------------+
|                                        |   Equity   |
+----------------------------------------+------------+
|Dana Petroleum (E&P) Limited (Operator) |36.0%       |
+----------------------------------------+------------+
|Gaz de France UK B.V.                   |24.0%*      |
+----------------------------------------+------------+
|Tullow Oil                              |20.0%       |
+----------------------------------------+------------+
|Hardman Petroleum (Mauritania) Pty      |18.0%       |
|Limited                                 |            |
+----------------------------------------+------------+
|Roc Oil (Mauritania) Company            |2.0%        |
+----------------------------------------+------------+
* Subject to farmin from Dana

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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