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08/14/2013

Capillary Pressure and Saturation Relations for Supercritical CO2 and Brine in Sand

Source:  Dan Hawkes

In geologic carbon sequestration, reliable predictions of CO2 storage require understanding the capillary behavior of supercritical (sc) CO2. Simulations of CO2 sequestration commonly rely on modifying more familiar air/H2O and oil/H2O Pc(Sw) relations, adjusted to account for differences in interfacial tensions. To test such capillary-scaling-based predictions, ESD’s Tetsu Tokunaga and his investigative team (including ESD’s Jiamin Wong, Jong-Won Jung, Tae Wook Kim, Youngman Kim, and Wenming Dong) developed a high pressure Pc(Sw) controller/meter, allowing accurate Pc and Sw measurements. 

This work was performed at the Lawrence Berkeley National Laboratory in support of the Center for Nanoscale Control of Geologic CO2, an Energy Frontier Research Center, funded by the U.S. Department of Energy (DOE), Office of Science, Office of Basic Energy Sciences under contract DE-AC02-05CH11231.

For more information, go to: http://onlinelibrary.wiley.com/doi/10.1002/wrcr.20316/full

Citation: Tokunaga, T.K., J. Wan, J.-W. Jung, T. W. Kim, Y. Kim, and W. Dong (2013), Capillary pressure and saturation relations for supercritical CO2, and brine in sand: High-pressure Pc(Sw) controller/meter measurements and capillary scaling predictions. Water Resources Research, 49, 1–14; DOI: 10.1002/wrcr20316.

Funding: BES (NCGC-EFRC), FE (ZERT), NRAP