Drilling Update: Perth Basin

Roc Oil Company Limited
10 April 2007


10 April 2007

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

                           DRILLING ACTIVITY UPDATE:
              OFFSHORE PERTH BASIN EXPLORATION DRILLING PROGRAMME

Roc Oil (WA) Pty Limited advises that as of 2200 hours on 6 April 2007
Australian Western Standard Time ('AWST') the 'Premium Wilcraft' jack-up
drilling rig commenced drilling the Frankland-1 exploration well in WA-286-P in
the Perth Basin about 25 kilometres north of the Cliff Head Oil Field, offshore
Western Australia.

As at 0600 hrs on 10 April 2007 AWST surface casing had been set at 113.5 metres
and the current operation was drilling ahead at 850 metres.

Frankland-1, the first of a planned three well exploration drilling programme in
the region, is scheduled to reach a Total Depth of 2,210 metres by next week.

Participating Interests in WA-286-P are:

Roc Oil (WA) Pty Ltd (Operator)........................37.5%
AWE Oil (Western Australia) Pty Ltd....................27.5%
Wandoo Petroleum Pty Ltd...............................24.0%
ARC (Offshore PB) Limited...............................6.0%
CIECO Exploration and Production (Australia) Pty Ltd....5.0%




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]
                                                       Fax:  [phone]
                                                     Email:  [e-mail]
                                                                                
                                                                    Nick Lambert
                                            Bell Pottinger Corporate & Financial
                                                       Tel:  [phone]
                                                                                


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