The South West Hub CCS Project - CCOP · • The SW Hub Presents a very unique storage site • Still in early stages of evaluation • Uncertainties • Fault transmissivity (vertical

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

CCOP Workshop| Steve Whittaker

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)


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


Queensland

New South Wales

Victoria


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

Storing Carbon Down Under | Steve Whittaker

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


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


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)


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)


Lesueur Storage Concept


Varma et al 2009

Eneabba

Yalgorup

DATA ACQUISITION


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

CCOP Workshop Steve Whittaker

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


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

CCOP Workshop | Steve Whittaker

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


Uncertainty Reduction


?• 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?


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]

mailto:[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


IEAGHG Summer School – Perth 2015


Documents

The South West Hub CCS Project - CCOP · • The SW Hub Presents a very unique storage site • Still in early stages of evaluation • Uncertainties • Fault transmissivity (vertical