Slide 1: Investor Field Trip presentation cover note
Origin energy To Company Announcements Office Facsimite 1300 300 021 Company Australian Stock Exchange Limited Date 17 June 2005 From Bill Hundy Pages 15 Subject PRESENTATION Please find attached a presentation for an Investor Field Trip being heid by the Company today. A copy of the presentation ca
Slide 2: Spring Gully Project
SPRING GULLY PROJECT
Slide 3: Spring Gully Development Area
SPRING GULLY DEVELOPMENT AREA Wellhead 42 welis Gas Plant 3x3500 HP compression 36TJ/d capacity Evaporation Pond Pipeline 15-20,000 kl/d capacity 89km transmission pipeline — : @) rigi n 147km gathering system
Slide 4: Delivered under EPCM project management philosophy
Delivered under EPCM project management philosophy with key disciplines managed by Origin employees « Origin is Project Manager ¢ Multiple Contracting Philosophy « Shedden Uhde Management System - Cost Control - Contracting/Procurement/Expediting ~ Engineering Design ¢ Origin Staff Imbedded througho
Slide 5: Spring Gully Project Schedule
Spring Gully Project Schedule Forecast Date Actual Date Complete Detailed Jul 2004 Oct 2004 Engineering Complete Gathering Feb 2005 Feb 2005 System Complete Pipeline Nov 2004 March 2005 Construction Complete Gas Plant April 2005 May 2005 First gas July 2005 June 2005 Origin |
Slide 6: Environmental Approvals
Environmental Approvals « Extensive baseline environmental studies completed. - Hydrology ~ Flora/Fauna - Soils - Groundwater - European Heritage - Noise * Environmental Management Plan approved by regulatory authority and environmental licence issued. » Baseline studies identified two ecosystems an
Slide 7: Native Title & Cultural Heritage Approvals
Native Title & Cultural Heritage Approvals ¢ Cultural Heritage Agreements have been reached with the relevant Native Title parties for the area. « Representatives of Traditional Owner groups are employed to check all proposed new disturbances and monitor earthworks activities. ¢« An Indigenous Land
Slide 8: How CSG is trapped
How CSG is trapped Unlike conventional natural gas reservoirs, where gas is trapped by buoyancy underneath a sealing rock within the pores (holes) in the reservoir rock, gas in coals is adsorbed onto the surface of the coals (micropores and fractures) and held in place by the water pressure. This me
Slide 9: CSG Vs Conventional Production
CSG Vs Conventional Production Because the micropore surface area of coals is much larger than the porosity in conventional reservoirs, coals can retain much larger volumes of gas over the same thickness and area. However the production characteristics of a coal is more dominated by the fracture net
Slide 10: Coal depth and typical well spacing
COAL DEPTH ~700 - 800m le TYPICAL WELL SPACING 1.0 - 1.5krrv ,|
Slide 11: Spring Gully Gathering Facilities
Spring Gu Wellhead & Separator os ly Gathering Facilities Sales Gas Cot 4 | ! igging Facility | Sales Gas Pipetine Fresh Water to irrigation or creck discharge wp jemoss Preis Trial eso. Creek Disc harge & permeate (Salt Water) % to Evaporation Ponds Possibie re-injection of pond brine to depleted c
Slide 12: Underream hole drilling
~ ONDER REAM HOLE: yee faydraulic drive ueit
Slide 13: Cavitation Rig Layout
Cavitation Rig Layout ia onl a an raya mana li He eee un eee CATWALK AND PIPE RACKS: ines
Slide 14: Cavitation - Well Schematic
Cavitation - Well Sc i i /) SURGES hematic
Slide 15: Fracture Stimulation - Well Schematic
Fracture Stimulation - Well Schematic l