Slide 1: Exploration and Production Presentation (ASX cover fax)
Origin energy To Company Announcements Office Facsimite 1300 300 021 Company Australian Stock Exchange Limited Date 21 August 2003 From Bill Hundy Pages 8 Subject EXPLORATION AND PRODUCTION PRESENTATION Please find attached a copy of a presentation that Mr Rob Willink, General Manager, Exploration w
Slide 2: Otway Basin - Hot Spot
[[]} erorcsen orrsrore se suaver [UJ enstins oeesone an sunvers ws reus Gaiman (2.00%) Boas 65075) DEM 8.708) Barts 12.79%) abioneg (828% Page 2 Otway Basin - Hot Spot 1 + Following the Thylacine and Geographe gas discoveries the offshore Otway has attracted many new players «+ Prospectivity centres
Slide 3: Schematic Section Offshore Otway Basin
Pxge 3 Masti fongin SCHEMATIC SECTION OFFSHORE OTWAY BASIN Geographe ‘sk [[)} erorcsen orrsnone se suavev TU} enstinecersnone a curves & wseELD Page 4 Otway Basin: Proposed activity 2004-2006 + Construction of the Otway Gas project will begin with the Thylacine field to be developed first + Explorat
Slide 4: Otway Basin: Proposed activity 2004-2006
Bass Basin: Existing Fields and Proposed Trefoil 1 i ae ih ee ee North Perth Basin - Hot Spot 2 NORTHERN PERTH MASIN WESTERN AUSTRALI Origin Page 6
Slide 5: Bass Basin: Existing Fields and Proposed Trefoil
Page 7 North Perth Basin ~ Hot Spot 2 + Hovea, Jingemia, Eremia and Cliff Head discoveries have changed industry perception of region from poorly prospective for gas to highly prospective for both gas and oii + Current target is for 10,000 bopd gross by end of calendar year (5,000 bopd Origin net) +
Slide 6: North Perth Basin - Hot Spot
North Basin - 3D seismic is identifying prospects not seen on 2D seismic alone Pxge ¢ Perth Basin: Proposed activity 2004-2008 Increasing use of 3D seismic will result in better prospect delineation Integration of new geological models should help maintain a high success rate Very active exploration
Slide 7: Perth Basin: Proposed activity 2004-2008
Surat Basin - Hot Spot 3 Myallt Creek Area [2 Mew Origin/OCAa interests Subject to registration) Recoverable Reserves Page 11 Schematic Cross Section - Surat Basin 20 km Permian mm Coal measures. Oit or gas bearing reservoir =» Hydrocarbon migration . MYALL CREEK | OVERSTON . WEST | TERRACE | TERRAC
Slide 8: Surat Basin and New Zealand Taranaki
. Page 11 Surat Basin - Hot Spot 3 Recent successes in the Surat Basin suggest a large gas resource may be stratigraphically trapped at Myall Creek in the Permian Tinowon Fm, A further 4 wells will be drilled starting in September, and 3D seismic will be acquired to define the aerial extent of the a