Victorian CC –groundwater issues
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The document discusses groundwater issues related to carbon capture and storage (CCS) in Victoria, Australia. It provides the following key points: 1) It presents preliminary salinity data from water bores and wells in the Gippsland Basin, showing large variations in sodium chloride (NaCl) concentrations with depth. 2) It shows new fault surface mappings for the Gippsland Basin developed from 3D geological models. These faults impact fluid flow patterns. 3) Upcoming work includes completing a variable density hydrological model of the basin by mid-2011, followed by dynamic modeling incorporating CO2 injection scenarios to understand fluid-rock-CO2 interactions and their salinity dependence.
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Victorian CC –groundwater issues
- 1. Base of Tertiary surface. Red colours are shallow, purple colours are deep. Source: 3D-Geo Victorian CCS – Groundwater issues Dr Monica Campi GeoScience Victoria
- 2. Managing Victoria’s energy resources Regional frameworks to support informed basin management for the geological carbon storage, water, petroleum, and geothermal sectors
- 4. 145°E 145°E 146°E 146°E Sealing Potential + 147°E 148°E 149°E [Na] (ppm) 2009 CCS Acreage New South Wales Release Blocks Excellent Gas Field Very good Oil Field Wallan 1,000-5,000 Good Buchan Moderate 5,000-10,000 Mallacoota Healesville Poor Orbost Melbourne >10,000 Bairnsdale Lakes Entrance Maffra 38°S 38°S Sale Warragul Longford Traralgon Leongatha Wonthaggi Gipp-01 Gipp-02 39°S 39°S Victoria Tasmania Gipp-03 AREA OF INTEREST 0 40 km 145°E 146°E 147°E 148°E 149°E 150°E
- 5. Regional
- 6. CarbonNet Storage Focus Areas Latrobe Valley (Capture)
- 7. Vic DPI CCS-Groundwater Projects • Regional hydrodynamic modelling of the Gippsland Basin (CSIRO) • Compartmentalisation of the Latrobe aquifer system (DSE/CSIRO) • Reservoir and Seal Mineralogy • To lead into future Fluid-Rock-CO2 interactions studies
- 8. Conceptual flow model – Gippsland Lakes area
- 10. Merriman-1 NaCl Kipper-1 & -2 NaCl 35000 30000 30000 25000 25000 NaCl ppm 20000 NaCl (ppm) 20000 15000 15000 10000 Kipper 1 10000 5000 Kipper 2 5000 0 0 0 500 1000 1500 2000 0 500 1000 1500 2000 2500 Depth (mSS) Depth (mSS) Barracouta-5 NaCl 30000 25000 Wirrah-1 & -3: NaCl 20000 NaCl (ppm) 35000 15000 30000 Wirrah-1 Wirrah-3 10000 25000 NaCl (ppm) 5000 20000 0 15000 0 500 1000 1500 2000 10000 Depth (mSS) 5000 0 0 500 1000 1500 2000 2500 3000 3500 Depth (mSS)
- 11. Preliminary salinity for the Gippsland Basin Data from DSE waterbores and CSIRO PressurePlot (wells)
- 12. New fault surfaces for the Gippsland Basin
- 13. ‘Need to knows’: • Fluid-rock-CO2 interactions • Mineral reactivity • Salinity dependent
- 14. AMA Bengworden South 6 Groper 1 932m Lakes Entrance Formation Gurnard Formation
- 15. AMA North Seaspray 1 981m Merriman 1 1829m Latrobe Group Emperor Subgroup
- 16. Where next? Variable density hydrological model should be complete by mid-2011 Dynamic modelling will follow, including injection scenarios