Geologic storage02

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Geologic Storage of CO 2 : Leakage Pathways and Environmental Risks ,[object Object],Princeton University and Alberta Geological Survey May 2002

CO 2 Injection and Trapping Mechanisms Stratigraphic Trapping Solubility Trapping Mineral Trapping Hydrodynamic Trapping Precipitated Carbonate Minerals ~800 m Confining Layer(s) Injection Well Supercritical CO 2 Dissolved CO 2

Research Questions ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Simulation of Injection of Supercritical CO 2 ,[object Object],[object Object],[object Object],[object Object],[object Object],CO 2 injection = 20 kg/s 50 m 10 m 790 m CO 2 Brine

Simulation of Injection of Supercritical CO 2 ,[object Object],[object Object],Radial distance [m] Depth [m] Mass of CO 2 /Volume [kg/m 3 ] Q brine = 40 kg/s Radial distance [m] Depth [m] Mass of CO 2 /Volume [kg/m 3 ]

Simulation of Injection of CO 2 Dissolved in Water ,[object Object],[object Object],seal Total Mass CO 2 injected = 3.1x10 7 kg seal Total Mass CO 2 injected = 1.2x10 9 kg Mass of CO 2 /Volume [kg/m 3 ] Mass of CO 2 /Volume [kg/m 3 ]

$Leakage Pathways and Trapping Mechanisms Injected Carbon Dioxide Surface Ecosystems Confining Layer(s) Atmosphere lateral migration Localized vertical migration fractures, faults, wells Potable Water$

Leakage Pathways: Abandoned Wells in the Alberta Basin

Simulation of leakage through a single abandoned well ,[object Object],[object Object],Depth [m]

Potential Effect on GW Quality -50 50 150 250 distance, m 2 yr. 4 yr. 6 yr. 8 yr. 10 yr. groundwater flow CO 2 leakage deep brine aquifer drinking-water aquifer 0.0E+00 3.0E-08 6.0E-08 9.0E-08 1.2E-07 Pb 2+ concentration, mol/L

[object Object],[object Object],Mammoth Mountain

Changes in Metal Uptake in Plants Elevated soil CO 2 Ca 1989 Zn Mn c b 2001 Ambient soil CO 2 Mn Zn Ca 1989 2001

Acknowledgements ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

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Geologic storage02

2. CO 2 Injection and Trapping Mechanisms Stratigraphic Trapping Solubility Trapping Mineral Trapping Hydrodynamic Trapping Precipitated Carbonate Minerals ~800 m Confining Layer(s) Injection Well Supercritical CO 2 Dissolved CO 2

7. Leakage Pathways and Trapping Mechanisms Injected Carbon Dioxide Surface Ecosystems Confining Layer(s) Atmosphere lateral migration Localized vertical migration fractures, faults, wells Potable Water

8. Leakage Pathways: Abandoned Wells in the Alberta Basin

10. Potential Effect on GW Quality -50 50 150 250 distance, m 2 yr. 4 yr. 6 yr. 8 yr. 10 yr. groundwater flow CO 2 leakage deep brine aquifer drinking-water aquifer 0.0E+00 3.0E-08 6.0E-08 9.0E-08 1.2E-07 Pb 2+ concentration, mol/L

11.

12. Changes in Metal Uptake in Plants Elevated soil CO 2 Ca 1989 Zn Mn c b 2001 Ambient soil CO 2 Mn Zn Ca 1989 2001

13.

Geologic storage02

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