Adsorption Kinetics of Surfactant Used in CO2-Foam Flooding onto Berea Sandstone
Adsorption/desorption kinetics and equilibrium onto Berea sandstone for a surfactant used as a CO2-water foaming agent were presented. The foam stability of the surfactant was compared before and after adsorption/desorption has occurred. CD 1045 (CD) adsorption onto Berea sandstone took several days to reach equilibrium. The adsorption process was characterized by a short period of fast adsorption followed by a long period of slow adsorption. CD adsorption onto Berea sandstone was well described by the pseudo-second-order adsorption kinetic model. Increasing CD concentration increased CD adsorption density onto Berea sandstone. CD desorption from Berea sandstone was fit by the pseudo-second-order kinetic model. At similar CD concentrations, in comparison to the CD solution before circulation, foam stability of the CD solution after circulation decreased during adsorption, but remained at a similar level during desorption, indicating a selective adsorption when CD solution transports through Berea sandstone.
B. Bai et al., "Adsorption Kinetics of Surfactant Used in CO2-Foam Flooding onto Berea Sandstone," Proceedings of the SPE Annual Technical Conference and Exhibition (2005, Dallas, TX), pp. 1951-1957, Society of Petroleum Engineers (SPE), Oct 2005.
The definitive version is available at http://dx.doi.org/10.2118/95920-MS
SPE Annual Technical Conference and Exhibition (2005: Oct. 9-12, Dallas, TX)
Geosciences and Geological and Petroleum Engineering
Keywords and Phrases
Adsorption Kinetics; Foam Flooding; Foam Stability; Water Foaming Agent; Carbon Dioxide; Desorption; Foams; Mathematical Models; Phase Equilibria; Sandstone; Surface Active Agents
Article - Conference proceedings
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