Drilling Update: Mauritania

Roc Oil Company Limited
07 May 2008





7 May 2008

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

              DRILLING UPDATE: BANDA NW ST-1, OFFSHORE MAURITANIA

Roc Oil (Mauritania) Company, a wholly owned subsidiary of ROC, advises that as
at midnight (local time) on 3 May 2008, the Banda NW ST-1 sidetrack well had
been suspended.

The results of the wireline logging, Modular Dynamic Tester (MDT) pressure
testing and sampling indicate that Banda NW ST-1 intersected an 85 metre gross
gas column, with 15 metres (18%) net gas pay and a 15 metre gross oil column,
with 10 metres net oil pay (67%). The fluid contacts were as expected and the
well is interpreted to be in communication with the original Banda-1 discovery
well drilled in 2002, approximately 2 kilometres to the east. The Banda Field is
in approximately 300 metres of water and spans PSC Area A and PSC Area B.

The Atwood 'Hunter' will commence with the planned well intervention work on the
Chinguetti Field, once it has completed the move from Banda NW ST-1.

Participating Interests in the PSC Area A Joint Venture are:

    ROC Group Companies...................................4.155%
    PC Mauritania I Pty Ltd (Operator)...................53.846%
    Tullow Oil plc.......................................24.300%
    Mauritania Holdings B.V..............................13.084%
    Fusion Mauritania A B.V...............................3.000%
    FP Mauritania A B.V...................................1.615%

Participating Interests in the PSC Area B Joint Venture are:

    ROC Group Companies...................................3.693%
    PC Mauritania I Pty Ltd (Operator)...................53.846%
    Tullow Oil plc.......................................21.600%
    Mauritania Holdings B.V..............................11.630%
    Premier Oil Mauritania B Limited......................9.231%


In accordance with ASX and AIM Rules, the information in this Release has been
reviewed and approved by Dr John Doran, Chief Executive Officer, Roc Oil Company
Limited, BSc (Hons) Geology, MSc and PhD. Dr Doran, who is a member of the
Society of Petroleum Engineers, has more than 30 years of relevant experience
within the industry and consents to the information in the form and context in
which it appears.


Damian Fisher
General Manager
External Affairs & Investor Relations


                                         For further information please contact:
                                                                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]
                                     Mob: [phone]
                                                     Email:  [e-mail]
                                                                                
                                                                    Michael Shaw
                                    Oriel Securities Limited (Nominated Adviser)
                                                       Tel:  [phone]
                                                                                
                                                                     Bobby Morse
                                                         Buchanan Communications
                                                       Tel: + 44 (0)20 7466 5000
                                                       Fax: + 44 (0)20 7466 5001
                                                  E-Mail: [e-mail]
                                                        Mob: [phone]
                                                                                


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