Geologic Sequestration Training and Research (GSTR) -
Recovery Act: Modeling and Evaluation of Geophysical Methods for Monitoring and Tracking CO2 Migration in the Subsurface
Performer: The Ohio State University
Project No: FE0002441
Supported two students’ efforts to accumulate 12,480 training related hours under the program.
Developed a new geophysical tool, a software program called GphyzCO2, to investigate the implementation of geophysical monitoring for detecting injected CO2 at test sites. The GphyzCO2 software consists of interconnected programs that encompass well logging, seismic, and electromagnetic methods. The software enables users to design and execute 3D surface seismic and borehole-to-borehole (cross-hole seismic and electromagnetic methods) numerical modeling surveys.
Tested the capabilities of the GphyzCO2 program using well log data, porosity and electrical permittivity measurements, resistivity measurements, and seismic data from a CO2 storage test site in Warren County, Ohio (Figure 2).
The data was input into GphyzCO2 to demonstrate a full implementation of the software capabilities. Part of the implementation investigated the limits of using geo-physical methods to monitor CO2 injection sites. The results show that cross-hole EM numerical surveys are limited to a maximum 100 meter borehole separation. The outcome of the forward modeling shows that EM methods can detect the presence of CO2.
A final report has been completed and is now available. The project analyzed seismic data, well logs, and rock core samples collected throughout Ohio (provided by the Ohio Geological Survey). This data will greatly improve the accuracy in numerically modeling an injection site.