Sequestration Field Efforts Continue

Jennifer Lewicki from Lawrence Berkeley National Lab and Ivan Krapac from the Illinois State Geological Survey installed an Eddy Covariance Tower at the Illinois Basin-Decatur site the week of August 11, 2008. The tower contains a complete weather station to monitor vertical and horizontal wind speed and direction, temperature, relative humidity, solar and photosynthetic radiation, rain, and atmospheric carbon dioxide (CO2) concentrations. Data collected from these instruments will allow the CO2 atmospheric flux downwind of the CO2 injection well to be monitored. This information will be used to monitor for potential CO2 seepage at the site and is one of many techniques being used in the monitoring, mitigation, and verification (MMV) program.

Bracken Wimmer and Abbas Iranmanesh continue to collect groundwater and gas samples from the enhanced coal bed methane (ECBM) and oil recovery (EOR) pilot projects. These samples are used to monitor groundwater quality to determine whether CO2 injection operations are affecting shallow groundwater quality. To date, the water quality data indicate that project activities have not had an impact on local water quality. Monitoring gas concentrations in project wells will determine the performance of the coal seam with respect to CO2 injection.

Hannes Leetaru, John McBride, and Marcia L. Couëslan worked on developing geophysical parameters for acquiring new seismic reflection data at the Decatur ADM site. They also are writing an interim topical report on the results from the reprocessing of the ADM seismic data. Preliminary interpretations suggest that there is no faulting adjacent to the injection site. The quality of the seismic data near the ADM plant was poor and was probably caused by vibrations from the plant itself.