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Geologic sequestration of CO2 in depleted oil reservoirs, while a complex issue, is thought to be a safe and effective carbon management strategy. This paper provides an overview of a NETLsponsored R&D project to predict and monitor the migration and ultimate fate of CO2 after being injected into a depleted oil reservoir as part of a micropilot scale field experiment. The Queen Formation sandstone, located in the West Pearl Queen field in SE NM, was identified as the CO2 injection site for this project. Core samples of this formation were obtained for lithologic analysis and laboratory experimentation. Preliminary flow simulations were run using this data and suggest that at least 2000 tons of CO2 can be injected...
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Macroinvertebrate community distributions were investigated within the benthic and hyporheic zone of five groundwater-fed streams, on a floodplain terrace, in a glacierized catchment in Alaska, in summer 2008. The streams were characterized by a distinct gradient in environmental instability and provided an opportunity to determine whether the local variability in environmental instability of groundwater-fed streams (reflecting differences in lengths of groundwater flow pathways) are of sufficient magnitude and frequency to influence macroinvertebrate community distribution. Individual measures of surface-water temperature, streamflow, streambed stability and sediment size were incorporated into a multivariate index...
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