Adsorption Kinetics of Surfactant Used in CO₂-Foam Flooding onto Berea Sandstone

Abstract

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.

Meeting Name

SPE Annual Technical Conference and Exhibition (2005: Oct. 9-12, Dallas, TX)

Department(s)

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

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2005 Society of Petroleum Engineers (SPE), All rights reserved.

Publication Date

01 Oct 2005

Link to Full Text

Share

 
COinS