Thordsen, J J

8 items:

Hydrology and subsurface transport of oil-field brine at the U.S. Geological Survey OSPER site “A”, Osage County, Oklahoma Spillage and improper disposal of saline produced water from oil wells has caused environmental damage at thousands of sites in the United States. In order to improve understanding of the fate and transport of contaminants at these sites, the U.S. Geological Survey carried out multidisciplinary investigations at two oil production sites near Skiatook Lake, Oklahoma. As a part of this effort, the hydrology and subsurface transport of brine at OSPER site “A”, a tank battery and pit complex that was abandoned in 1973, was investigated. Based on data from 41 new boreholes that were cored and completed with monitoring wells, a large (∼200 m × 200 m × 20 m) plume of saline ground water was mapped. The main dissolved species... Categories: Publication; Types: Citation
Near surface and deep subsurface monitoring for successful geologic sequestration of CO2 Categories: Publication; Types: Citation
Gas–water–rock interactions in sedimentary basins: CO2 sequestration in the Frio Formation, Texas, USA To investigate the potential for the geologic storage of CO2 in saline sedimentary aquifers, 1600 ton of CO2 were injected at ∼1500 m depth into a 24-m sandstone section of the Frio Formation — a regional reservoir in the US Gulf Coast. Fluid samples obtained from the injection and observation wells before, during and after CO2 injection show a Na–Ca–Cl type brine with 93,000 mg/L TDS and near saturation of CH4 at reservoir conditions. As injected CO2 gas reached the observation well, results showed sharp drops in pH (6.5 to 5.7), pronounced increases in alkalinity (100 to 3000 mg/L as HCO3) and Fe (30 to 1100 mg/L), and significant shifts in the isotopic compositions of H2O and DIC. Geochemical modeling indicates... Categories: Publication; Types: Citation; Tags: CO2 sequestration, Chemical composition of fluid, Fr
Near surface and deep subsurface monitoring for successful geologic sequestration of CO2 Categories: Publication; Types: Citation
Hydrology and subsurface transport of oil-field brine at the U.S. Geological Survey OSPER site “A”, Osage County, Oklahoma Spillage and improper disposal of saline produced water from oil wells has caused environmental damage at thousands of sites in the United States. In order to improve understanding of the fate and transport of contaminants at these sites, the U.S. Geological Survey carried out multidisciplinary investigations at two oil production sites near Skiatook Lake, Oklahoma. As a part of this effort, the hydrology and subsurface transport of brine at OSPER site “A”, a tank battery and pit complex that was abandoned in 1973, was investigated. Based on data from 41 new boreholes that were cored and completed with monitoring wells, a large (∼200 m × 200 m × 20 m) plume of saline ground water was mapped. The main dissolved species... Categories: Publication; Types: Citation

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