Origin Energy Limited · ASX:ORG
Origin Energy — Technical Presentation
14 slides from Origin Energy's technical presentation
Slide 1: Spring Gully Project
SPRING GULLY PROJECT Origin.
Slide 2: Spring Gully Development Area
SPRING GULLY DEVELOPMENT AREA Wellhead Gas Plant 42 wells 3x3500 HP compression 36TJ/d capacity Evaporation Pond 15-20,000 kl/d capacity Pipeline 89km transmission pipeline 147km gathering system 2
Slide 3: 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 4: 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 4
Slide 5: Environmental Approvals
Environmental Approvals • Extensive baseline environmental Squatter Pigeon studies completed. – Hydrology – Flora/Fauna – Soils – Groundwater – European Heritage – Noise • Environmental Management Plan approved by regulatory authority Brigalow Scaly Foot and environmental licence issued. • Baseline
Slide 6: 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 U
Slide 7: How CSG is trapped
How CSG is trapped BUTT CLEAT FACE CLEAT PORE SPACE BEDDING PLANE SAND GRAIN • 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
Slide 8: 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 n
Slide 9: Coal depth 800m well and facility schematic
WELLHEAD & SEPARATOR PUMP Sale sG as L e Lin i ne FLARE te r i ne Wa STACK sL Ga GAS FACILITY Overburden COAL DEPTH CASING ~700 - 800m Barren Rock WELL CASING Coal Seams EVAPORATION PONDS ne UNDER REAMING Li PUMP er at W ne Li s WATER PUMP Ga Barren Rock WELLHEAD & SEPARATOR TYPICAL WELL SPACING 1.0
Slide 10: Spring Gully Gathering Facilities
Spring Gully Gathering Facilities Sales Gas Compressor Pigging Facility Wellhead & Separator Gas Gathering Flowlines Sales Gas Pipeline Irrigation Fresh Water Reverse Osmosis Field Trial to irrigation or creek discharge Gas and Water Gathering Flowlines Creek Disc harge Permeate (Salt Water) to Evap
Slide 11: Wellhead and downhole schematic
Water & Gas Separator Gas fired hydraulic Remote drive unit Telemetry Unit Water & Gas Metering System Drive Head Wellhead GAS GAS CEMENT TO OVERBURDEN SURFACE CASING WATER TARGET SEAM UNDER-REAM HOLE PUMP 11
Slide 12: Cavitation Rig Layout
Cavitation Rig Layout MUD TANKS RIG FLOOR COAL COLLECTION PITS BLOOIE LINE CAVITATION RIG BOP STACK CATWALK AND PIPE RACKS 12
Slide 13: Cavitation - Well Schematic
Cavitation - Well Schematic PLAN VIEW TENSILE FAILURE SHEAR ZONE FAILURE ZONE ORIGINAL WELLBORE CAVITY ENHANCED PERMEABILITY ZONE EQUALS PRODUCTION INCREASE 13
Slide 14: Fracture Stimulation – Well Schematic
Fracture Stimulation – Well Schematic 14