Agl Energy Limited · ASX:AGL
Agl Energy — Corporate Update (August 2009)
18 slides from Agl Energy's corporate update, August 2009
Slide 1: CSG Exploration in the Hunter Valley
AGL Energy E Limited Li it d CSG Exploration in the Hunter Valley ll Dr Andrew Falkner Head of Exploration - Upstream Gas Bulga Community Consultative Committee AGL Energy – August 2009
Slide 2: Summary
2 Su Summary a y › Sydney Basin exploration history › The coal seam gas exploration process › What differentiates the good from the bad › Questions? » Bulga Community Consultative Committee » August 2009 » AGL External
Slide 3: Sydney Basin Exploration History
3 Sydney Basin Exploration History » Bulga Community Consultative Committee » August 2009 » AGL External
Slide 4: Historical Exploration
4 Historical sto ca Exploration p o at o > Over 20,000 coal & minerals exploration boreholes have been drilled in the northern Sydney Basin in the last 150 years > The majority of these have been drilled to identify the vast coal resources currently being mined today > In contrast, only ~70 borehole
Slide 5: Generalised Stratigraphy of Northern Sydney Basin
GENERELAISED STRATIGRAPHY OF NORTHERN SYDNEY BASIN 5 AGE NEWCASTLE AREA HUNTER VALLEY AREA ENVIRONMENT SEDIMENTARY FACIES SOURCE RESERVOIR MEANDERING STREAMS, LEAVES, BACK WIANAMATTA GROUP COASTAL PLAIN SWAMPS, LAGOON, PEAT MARSH, ASSIC BARRIER ISLAND COMPLEX MIDDLE TRIA BRAIDED STREAM, MEANDERING S
Slide 6: Northern Sydney Basin Exploration and Borehole Distribution
Northern Sydney Basin Exploration and Borehole Distribution 6 » Bulga Community Consultative Committee » August 2009 » AGL External
Slide 7: Coal Seam Gas Exploration
7 Coal Seam Gas Exploration » Bulga Community Consultative Committee » August 2009 » AGL External
Slide 8: What Do We Look For
8 What at Do o We e Look oo For o > Defining a CSG field requires an understanding of many parameters including: g › Reservoir (coal) thickness, composition & rank › In-situ gas content › Gas G saturation i C Coreholes h l › Gas composition › Reservoir p permeability y Pilot il Test Wells ll › Reser
Slide 9: » Bulga Community Consultative Committee » August 2009 » AGL External
9 » Bulga Community Consultative Committee » August 2009 » AGL External
Slide 10: In-Situ Gas Content
10 In-Situ S tu Gas Content Co te t > Gas content is a measurement of how much gas is held in the coal > Gas is stored or “adsorbed” adsorbed to the surface of the coal matrix > As the surface area available for adsorption is large, coal reservoirs are far superior gas reservoirs over conventional s
Slide 11: Typical Desorption Curve
11 Typical yp ca Desorption eso pt o Curve Cu e » Bulga Community Consultative Committee » August 2009 » AGL External
Slide 12: Sorption Isotherm & Undersaturated Coal Seam
12 Sorption So pt o Isotherm sot e & Undersaturated U de satu ated Coal Coa Seam Sea Methane Adsorption Isotherm Well: CSG 1 Ash Content (%): 19.3 Langmuir Volume (m3/t): 8.4 Sample: p 1 As Received Moisture ((%): ) 2.8 Langmuir g Pressure ((Mpa): p ) 4.97 Formation: Coal 1 Sample Density (g/cc): 1.
Slide 13: Gas Composition
13 Gas Composition Co pos t o > Methane is the main gaseous “by-product” of the coalification process, however, higher hydrocarbons and inert gases such carbon dioxide and nitrogen also remain adsorbed to the coal > These inert gases lower the energy value whilst also limiting the potential t ti l e
Slide 14: Permeability & Deliverability
14 Permeability e eab ty & Deliverability e e ab ty > Permeability is a measurement of the coal’s ability to convey gas and water > The permeability of the coal is the primary factor influencing a wells deliverability or production rate > Factors that influence permeability include depth, intensity
Slide 15: Test Well Production Profile
Test Well Production Profile 15 » Bulga Community Consultative Committee » August 2009 » AGL External
Slide 16: Defining the good from the bad
16 Defining the good from the bad » Bulga Community Consultative Committee » August 2009 » AGL External
Slide 17: CSG Fields of Australia
17 CSG Fields e ds o of Australia ust a a Australian CSG Fields Australian CSG Fields Net Coal Permeability 45 350 40 300 35 250 30 meability (mD) Net Coal (m) 200 25 20 150 Perm 15 100 10 50 5 0 0 Spring Gully Roma Shelf Undulla Nose Gloucseter Camden Hunter Spring Gully Roma Shelf Undulla Nose Glo
Slide 18: Questions?
18 Questions? » Bulga Community Consultative Committee » August 2009 » AGL External