Report of Investigations--KGS

Abstract

Two three-dimensional vertical seismic profiles (3D-VSP) were acquired at the KGS Marvin Blan No. 1 CO2 sequestration research well outside of Cloverport in Hancock County, Ky. The initial (preinjection) survey was performed September 15-16, 2010, and was followed by the injection of 361.2 metric tons of supercritical CO2 and then 584 m3 of 2 percent potassium chloride water (to displace the remaining CO2 in the wellbore) on September 22, 2010. After injection, the well was shut in with a downhole pressure of 17.5 MPa at the injected reservoir depth of 1,545.3 m. A second 3D-VSP was acquired September 25-26, 2010. These two surveys were combined to produce a time-lapse 3D-VSP data volume in an attempt to monitor and image the subsurface changes caused by the injection.

Less than optimum surface access and ambient subsurface noise from a nearby active petroleum pipeline compromised the quality of the data, preventing imaging of the CO2 plume in the subsurface. Some changes in the post-injection seismic response (both wavelet character and an apparent seismic pull-down within the injection zone) are interpreted to be a result of the injection process, however, and imply that the technique could still be valid under different circumstances.

Publication Date

2014

Series

Series XII

Report Number

Report of Investigations 26

Digital Object Identifier (DOI)

https://doi.org/10.13023/kgs.ri26.12

Funding Information

This report documents the results of subtasks 3.6 and 3.8 of the project, An Evaluation of the Carbon Sequestration Potential of the Cambro-Ordovician Strata of the Illinois and Michigan Basins, funded by the U.S. Department of Energy through Recovery Act: Site Characterization of Promising Geologic Formations for CO2 Storage, DE-FOA-0000033, under cooperative agreement DE-FE0002068, from December 8, 2009, through September 30, 2013.

The first phase of this project was funded in part by the Commonwealth of Kentucky, University of Kentucky, and Kentucky Geological Survey, and additional funding was provided by the Western Kentucky Carbon Storage Foundation, the Illinois Department of Commerce and Economic Opportunity–Office of Coal Development, and the U.S. Department of Energy–Office of Fossil Energy–National Energy Technology Laboratory. Drillsite access was graciously granted by Marvin and Brenda Blan, Hawesville, Ky.

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