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Extramural Research

Protecting Drinking Water by Reducing Uncertainties Associated with Geologic Carbon Sequestration in Deep Saline Aquifers

EPA Grant Number: R834382
Title: Protecting Drinking Water by Reducing Uncertainties Associated with Geologic Carbon Sequestration in Deep Saline Aquifers
Investigators: Roy, William R. , Benson, Sally M. , Berger, Peter , Krapac, Ivan G. , Lin, Yu-Feng Forrest , Mehnert, Edward , Panno, Samuel V. , Ray, Chittaranjan
Current Investigators: Roy, William R. , Benson, Sally M. , Berger, Peter , Butler, Shane K , Lin, Yu-Feng Forrest , Mehnert, Edward , Panno, Samuel V. , Ray, Chittaranjan , Strandli, Christin , Yoksoulian, Lois
Institution: University of Illinois at Urbana-Champaign , Stanford University , University of Hawaii at Honolulu
EPA Project Officer: Klieforth, Barbara I
Project Period: November 16, 2009 through November 15, 2014
Project Amount: $897,225
RFA: Integrated Design, Modeling, and Monitoring of Geologic Sequestration of Anthropogenic Carbon Dioxide to Safeguard Sources of Drinking Water (2009)
Research Category: Drinking Water

Description:

Objective:

The Midwest Geological Sequestration Consortium (MGSC) is led by the Illinois State Geological Survey (ISGS). The MGSC has actively been engaged in geologic sequestration research since 2003. In response to the US EPA Funding Opportunity EPA-G2008-STAR-H1, we propose to conduct a 3-year study to accomplish five research tasks. These tasks are designed to leverage the on-going USDOE Phase III deep saline reservoir demonstration. The results of this project should help reduce hydrologic and geochemical uncertainties associated with geologic carbon sequestration in deep, saline reservoirs and thus protect groundwater quality.

Approach:

The first three tasks in this proposal address pressure monitoring in and above the injection reservoir. In the first task, available injection and caprock formation pressures at natural gas storage fields will be complied and analyzed to help define the baseline pressure in the Mt. Simon sandstone in the Illinois Basin. In task 2, the pressure response in the injection reservoir and above its caprock at the proposed Phase III MGSC pilot project will be monitored with the Westbay system, and will be evaluated using analytical and numerical models. This effort may provide the protocols and methodology for applying this type of proactive leakage monitoring technique in conjuction with the Westbay system for commercial-scale CO2 storage projects. In the third task, basin-scale, flow and transport models of the Mt. Simon sandstone will be developed to predict potential impacts of multiple future geologic commercial-scale carbon sequestration projects. These models will be used to guide future data collection efforts and to design monitoring strategies to protect USDWs within the basin. All of these efforts would be applicable to similar caprock and injection reservoirs throughout the Unites States. The purpose of the fourth task is to conduct laboratory interaction studies using high-pressure, high-temperature reaction vessels to identify the reaction mechanisms, kinetics, and solid-phase products that are likely occur in saline sandstone reservoirs with siltstone caprocks. These gas-vapor-rock batch experiments will be conducted using available and MGSC-obtained core samples. In the fifth task, we propose to collect baseline data for discharge estimates and geologic sources of saline groundwater for the Illinois Basin. These baseline data could be used to differentiate natural brine seeps versus brine that has been displaced by carbon dioxide sequestration.

Publications and Presentations:

Publications have been submitted on this project: View all 24 publications for this project

Journal Articles:

Journal Articles have been submitted on this project: View all 2 journal articles for this project

Supplemental Keywords:

Eau Claire Formation, vertical pressure profile, seal, USDW, flux, TOUGH2, TOUGHREACT, MODFLOW, Geochemist’s Workbench, equilibrium modeling, MVA,

Progress and Final Reports:
2010 Progress Report
2011 Progress Report
2012 Progress Report

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The perspectives, information and conclusions conveyed in research project abstracts, progress reports, final reports, journal abstracts and journal publications convey the viewpoints of the principal investigator and may not represent the views and policies of ORD and EPA. Conclusions drawn by the principal investigators have not been reviewed by the Agency.

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