The South West Hub CCS Project - CCOP · • The SW Hub Presents a very unique storage site •...
Transcript of The South West Hub CCS Project - CCOP · • The SW Hub Presents a very unique storage site •...
Case Study: Site SelectionThe South West Hub CCS Project
ENERGY FLAGSHIP
Steve Whittaker| Group Leader – Reservoir DynamicsCCOP CCS-M Workshop C2W1, Kuala Lumpur, MalaysiaJune 3, 2015
• South West Hub Flagship CCS Project• Past, Present and Future
• National Geosequestration Laboratory
Outline
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Project Drivers:Western Australia’s Major Emission Hubs
Initial projections by ACIL Tasman for 2010
National CCS taskforce (National Carbon Mapping and Infrastructure Plan, Aus, 2009)
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Federal and State government support, with intention of industry involvement
Originally a $1.7 billion programme to help develop “first of a kind” large scale, integrated , industrial CCS projects in Australia.
These projects were intended to contribute to reaching the G8 goal of “20 by 2020”• CarbonNet – Victoria• South West Hub – Western Australia• ? - Queensland
Flagship Projects
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Queensland
New South Wales
Victoria
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Carbon Task Force
Government programto examine nation’s storage potential and encourage exploration for storage sites
SW Hub Flagship:A$53 Million in support for detailed feasibility study announced in June 2011
Onshore Perth Basin
CONCEPT
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240 MT over 40 years - Narrowing options
Varma et al, 2009 in M&PG
• Proposal by the Western Australia Dept Mines & Petroleum and Industry JV
• Area has coal mines, power stations, alumina extraction & processing plants
• Region produces about 25 Mta CO2; ~ 5-6 Mt/y of this can be captured
• CO2 storage proposed in sandstone unit at 2-3 km depth
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Initial Geological DataExisting DataSeismic data good to poor qualityDarling Fault interpreted with
gravity dataWells drilled in the 60’s and 70’s,
and 80’s
(modified from Crostella & Backhouse, 2000)
Yarragadee (& Leederville)SW regional drinking water supply.
Potential seal is the Eneabba Formation
The target reservoir is the Lesueur Sandstone (Wonnerup + Myalup Members)
2300
m11
00 m
South West Hub |
Process analogue
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Key findings for onshore southern Perth Basin:• Lack of suitable seals• Proximity to potable aquifers
Key findings for offshore southern Perth Basin:• Gage Sandstone/ South Perth Shale
reservoir seal combination• Containment risk: sandy facies in
South Perth Shale
GEODISC (2000)CO2CRC (2006)
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Harvey Ridge was identified as a prospective site:
Heterogeneity of Lesueur Sandstone would promote residual trapping
Baffles in the Eneabba Formation
Potentially large storage capacity
Absence of the YarragadeeFormation the major potable aquifer in the region.
CO2CRC (2007)
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Lesueur Storage Concept
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Varma et al 2009
Eneabba
Yalgorup
DATA ACQUISITION
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Geosequestration
Capacity
Injectivity
Containment
100 km of 2D seismic acquired in 2011 to locate a data well
Drilled to 2945m TD.
Lesueur Formation (Permian) extensively cored.
Presence of thick paleosols? that may have sealing potential in U. Leseuer
Core indicates the L. Lesueur Fm has promising reservoir characteristics
Questions around seal still exist
Harvey 1 Exploration well
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Facies Analysis and Rock PropertiesWonnerup Member (L. Lesueur)
• 1500 m thick fluvial sandstone
• Porosity values; 7-19%
• Permeability; 0.01 to 580mD
• Preliminary core flooding tests 25-45% residual trapping potential
Yalgorup Member (U. Lesueur)
• Poor logging results from breakout
• Variable core recovery
• Paleosols?
Delle Piane et al (2013)
Forward Stratigraphic Modelling:input to dynamic model
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Griffith 2014
Schlumberger Model ~2010
Based on Pinjara core, 50 km north
2D seismic of various vintages
Logs 60s, 70s & 80s vintage
• Majority of CO2 trapped in Yalgorup Member at 1250 m, and does not reach bounding faults
• Residual trapping predominant mechanism
• The CO2 plume reached the base of Eneabba Fm but did not migrate higher.
Vertical Containment Characterisation
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fine-grained interval between 1200-1400 m depth – interpreted as possible Paleosols in Yalgorup Member• Multicoloured• Churned appearance• Slickensides• Vertical pipe-like structures (burrows)• Large polygonal desiccation cracks• Reticulate pattern• No evidence of faulting
1
DEPT
(M)
3
Porosity / Sw
GammaRay
GR (GAPI)0. 250.
VCLGR (Dec)0. 1.
Porosity Input
CN (dec)0.45 -0.15
ZDEN (G/C3)1.95 2.95
PE (B/E)0. 10.
Resistivity
MLR4C (OHMM)0.2 200.
RMLL (OHMM)0.2 200.
2
CALX
Yalgorup
Wonnerup
Diagenesis in Wonnerup Member in regional wells
Interpretations TIME
K-feldspar dissolution
Kaoliniten.1
Anatase
Kaoliniten.2
Quartz overgrowth
Calcite cement
Fracturing
Fracturing
Pressure-solution surfaces
?
Structural Setting & Fault Distribution
Langhi et al (2013)
New 3D seismic (Odin 2014)Based on 2D seismic
NEXT STEPS
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Uncertainty Reduction
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?• What are the main
technical risks?• Where to drill next
deep well?• What other data are
needed?
H1
H2
H3 H4
Well LocationsH1 Deep
H2 shallowH3 shallowH4 shallow
H5 – Deep- Where?- What tests?
23
Orange box = 15 x 10 km
H1
H2
H3 H4
Future Data Acquisition Steps
• Planning deep well Q1 2016– (3 wells newly drilled only penetrate the U.
Lesueur)
• How extensive are the palaeosols? How effective a vertical barrier are they?
• Fault Characterisation• Water samples – salinity variations?• Update reservoir, geomechanical,
geological models• How effective will residual trapping
be?
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National Geosequestration Laboratory
• Geochemistry facility– GC, GCMS, GCIRMS, ICP-AES/-
OES, • Tracers & Sensors
– Partitioning reactors– Slim-tube facility
• Geomechanics– ATCs CO2 ready– TTSC CO2 ready
• Core flood– New & existing core flood– Micro & Med CT scanners
• Geophysics
Contact: [email protected]
• The SW Hub Presents a very unique storage site• Still in early stages of evaluation• Uncertainties
• Fault transmissivity (vertical & horizontal)• Matrix flow – vertical containment – residual trapping• Compartmentalization
• Future activities will be focussed on reducing these uncertainties
• National Geosequestration Laboratory provides lots of opportunities for collaboration
Summary
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IEAGHG Summer School – Perth 2015
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