RNS Number:7823X
Black Rock Oil & Gas PLC
26 June 2002

                      FARM-OUT OF WA 226P BY ORIGIN ENERGY

Black Rock Oil & Gas PLC, ("Black Rock") advises that Origin Energy, a fellow
participant in the licence WA 226P in the Offshore Perth Basin, Western
Australia with Black Rock made the following announcement to the Australian
Stock Exchange today.  Origin Energy has reached agreement with Apache Energy
Limited for a subsidiary of Apache to earn an undivided 28.75% interest in WA
226P from Origin Energy.  Under the terms of the farm-in, Apache will manage the
drilling of the Morangie 1 well, scheduled in October 2002, as agent on behalf
of Origin.  Origin Energy will remain operator of the permit.

WA 226P is located in the northern offshore Perth Basin, approximately 230km
north west of Geraldton, Western Australia.  The Morangie 1 well will test an
undrilled prospect interpreted to have the potential to contain up to 250
million barrels of oil in place.  Permian sandstones below the Triassic regional
seal provide the main reservoir objective.

Several follow up structures are also present in WA 226P.  These will be
evaluated following the drilling of Morangie.

Participants in WA 226P following the farm-in and necessary government approvals
will be as follows:

Origin Energy Developments Pty Limited*                     28.8% (Operator)
Apache Northwest Pty Ltd***                                 28.8%
Dana Petroleum (E&P) Limited**                              12.8%
Dana Petroleum (WA) LLC**                                   12.7%
Black Rock Petroleum NL****                                  7.5%
Voyager Energy Limited                                       5.0%
Planet Resources Limited**                                   4.5%


*          a wholly owned subsidiary of Origin Energy Limited

**        wholly owned subsidiaries of Dana Petroleum plc

***      a wholly owned subsidiary of Apache Energy Limited which is a
subsidiary of Apache Corporation, an independent oil and gas production company
listed on Nasdaq

****    a wholly owned subsidiary of Black Rock Oil & Gas PLC




For further information contact:


David Steinepreis, Chairman, Perth, Western Australia

Phone: 61 8 9481 2407              Email: dsteinepreis@abanet.com.au



John Scott, Managing Director, Perth, Western Australia

Phone: 61 8 9226 3575              Email: blkrock@highway1.com.au



Julian Riddick, Director, London

Phone: 020 7629 7237               Email: julian@jgr.demon.co.uk



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

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