Iglauer, Stefan and Wu, Yongfu and Shuler, Patrick and Tang, Yongchun and Goddard, William A., III (2009) Alkyl polyglycoside surfactant-alcohol cosolvent formulations for improved oil recovery. Colloids and Surfaces A, 339 (1-3). pp. 48-59. ISSN 0927-7757 http://resolver.caltech.edu/CaltechAUTHORS:20090812-094656046
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We examine here the suitability of alkyl polyglycosides (APG) for improved oil recovery (IOR) applications. In recent years, these nonionic carbohydrate-based surfactants have become a significant commercial product (80,000 tons/year) with widespread use in household and agricultural products. Our laboratory study determined several characteristics of common APG surfactant formulations, in particular their capability to create low interfacial tensions (IFT) with n-alkane hydrocarbons. Our formulations included a wide range of alcohol cosurfactants with APG surfactants. We found APG–cosurfactant combinations that exhibit low IFT values of 0.01 mN/m or less versus n-octane. Our laboratory tests confirmed these APG formulations can provide useful IFT properties that are largely independent of both salinity and temperature. We report a coreflood test conducted on a Berea sandstone core using a selected formulation that exhibits oil recovery as high as 85% IOIP.
|Additional Information:||© 2009 Elsevier. Received 6 December 2008. Received in revised form 19 January 2009. Accepted 20 January 2009. Available online 29 January 2009. We thank the Department of Energy (DE-FC26-01BC15362) for providing financial support for this project and we thank Chevron-Texaco and Akzo Nobel for technical assistance. We also thank the Cognis Corporation for supplying APG surfactant samples.|
|Subject Keywords:||Alkyl polyglycoside; Alcohol cosolvents; Ultra-low interfacial tension; Enhanced oil recovery|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Tony Diaz|
|Deposited On:||13 Aug 2009 15:12|
|Last Modified:||26 Dec 2012 11:11|
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