Assessment of basin-scale hydrologic impacts of CO2 sequestration,Illinois basin |
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| Authors: | Mark Person Amlan Banerjee John Rupp Cristian Medina Peter Lichtner Carl Gable Rajesh Pawar Michael Celia Jennifer McIntosh Victor Bense |
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| Institution: | 1. New Mexico Institute of Mining and Technology, Department of Earth & Environmental Science, 801 Leroy Place, Socorro, NM 87801, USA;2. Indiana Geological Survey, Indiana University, 611 North Walnut Grove, Bloomington, IN 47405-2208, USA;3. Los Alamos National Laboratory, EES-16, Las Alamos, NM 87545, USA;4. Princeton University, Department of Civil Engineering, E-208 E-Quad, Princeton, NJ 08544, USA;5. University of Arizona, Department of Hydrology and Water Resources, 1133 E. James E. Rogers Way, Tucson, AZ 85721, USA;6. School of Environmental Sciences, University of East Anglia, Norwich, NR4 7TJ, England, UK;1. Department of Energy Resources Engineering, Pukyong National University, Republic of Korea;2. Department of Earth Environmental Sciences, Pukyong National University, Republic of Korea;1. Battelle, 505 King Ave, Columbus, Ohio, 43201, USA;2. Core Energy LLC, 1011 Noteware Dr., Traverse City, Michigan,49684, USA;1. Pacific Northwest National Laboratory, Richland, WA 99352, USA;2. Battelle, Columbus, OH, USA;3. Geostress, Strasbourg, France;4. National Energy Technology Laboratory, Pittsburgh, PA, USA;5. FutureGen Industrial Alliance Inc., Washington, DC, USA;1. Karlsruhe Institute of Technology, Institute of Applied Geosciences, Division of Geothermal Research, Adenauerring 20b, 76131 Karlsruhe, Germany;2. Helmholtz Centre Potsdam, GFZ German Research Centre for Geosciences, Section 2.6, Helmholtzstraße 6/7, 14467 Potsdam, Germany;3. TNO, P.O. Box 80015, NL-3508 TA Utrecht, The Netherlands;4. Utrecht Unversity, Faculteit van Aardwetenschappen, Boedapestlaan 4, NL-3584 CD Utrecht, The Netherlands;1. Department of Geosciences and Natural Resource Management, University of Copenhagen, Denmark;2. Department of Civil and Environmental Engineering, Colorado School of Mines, United States;3. HydroInform, Copenhagen, Denmark;4. Geological Survey of Denmark and Greenland, Denmark |
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| Abstract: | Idealized, basin-scale sharp-interface models of CO2 injection were constructed for the Illinois basin. Porosity and permeability were decreased with depth within the Mount Simon Formation. Eau Claire confining unit porosity and permeability were kept fixed. We used 726 injection wells located near 42 power plants to deliver 80 million metric tons of CO2/year. After 100 years of continuous injection, deviatoric fluid pressures varied between 5.6 and 18 MPa across central and southern part of the Illinois basin. Maximum deviatoric pressure reached about 50% of lithostatic levels to the south. The pressure disturbance (>0.03 MPa) propagated 10–25 km away from the injection wells resulting in significant well–well pressure interference. These findings are consistent with single-phase analytical solutions of injection. The radial footprint of the CO2 plume at each well was only 0.5–2 km after 100 years of injection. Net lateral brine displacement was insignificant due to increasing radial distance from injection well and leakage across the Eau Claire confining unit. On geologic time scales CO2 would migrate northward at a rate of about 6 m/1000 years. Because of paleo-seismic events in this region (M5.5–M7.5), care should be taken to avoid high pore pressures in the southern Illinois basin. |
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