Final Technical Report, Analytical Numerical Sharp-Interface Model of CO2 Sequestration and Application to Illinois Basin, Reporting Period: October 1, 2009-September 30, 2012.

摘要

Federal funds totaling $849,000 were awarded to NM Tech, Princeton University, Purdue University, Los Alamos National Laboratory, and the Indiana Geological Survey to assess the risk of brine/CO2 leakage and induced seismicity associated with proposed basin-scale carbon capture and storage projects within the Illinois Basin using mathematical modeling and field/laboratory analysis. The primary goal of this study (Task 1) was to develop, test, and implement a new, multi-layer, sharp-interface carbon sequestration model for the Illinois Basin. Secondary goals of the project included: (1) compile existing porosity, permeability, salinity and pore pressure data for the Illinois Basin (Task 2); (2) characterize the mineralogical and petrophysical properties of the Eau Claire Shale in order to assess seal integrity (Task 3); (3) construct a multi-layer hydrostratigraphic framework model of the Illinois Basin and calibrate the model using available using available petrophysical, salinity and pressure data (Task 4); (4) use the calibrated model to assess the magnitude and spatial extent of deviatoric pore pressure propagation away from proposed injection wells at the sedimentary basin scale; (5) assess the risk of CO2 leakage up abandoned oil and gas wells as well as the induced seismicity resulted from anomalous pore pressures (Task 5); (6) document the results of our study in a series of papers submitted to peer reviewed journals (Task 6).