Ultra-Low Interfacial Tension and Retention of Internal Olefin Sulfonate (IOS) for EOR

Li Mei Sun; Guo Qiang Gao; Lu Shan Wang; Zhong Qiang Tian; Jie Cui; Arne Skauge

doi:10.4028/www.scientific.net/AMR.550-553.36

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 550-553Ultra-Low Interfacial Tension and Retention of...

Ultra-Low Interfacial Tension and Retention of Internal Olefin Sulfonate (IOS) for EOR

Abstract:

Surfactant ultra-low interfacial tension (IFT) for internal olefin sulfonate with iso-amylalcohol (IAA) as co-solvent against heptane, octane and decane at 20 °C, 50 °C, and 90 °C respectively have been systematically investigated, as well as the dynamic retention in porous media. The results show for oils with alkane carbon number from 7 to 10 and temperature from 20 °C to 90 °C, optimal salinity starts from 6.5 wt% to 11.6 wt% NaCl, where ultra-low IFT occurs. While at high salinity (at least from 6 wt% NaCl ), the retention is too high for surfactant flooding to be applicable. Only internal olefin sulfonate with co-solvent alone can not provide a perfect formulation with ultra-low IFT and low retention.

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Periodical:

Advanced Materials Research (Volumes 550-553)

Pages:

36-39

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.550-553.36

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Online since:

July 2012

Authors:

Li Mei Sun, Guo Qiang Gao, Lu Shan Wang, Zhong Qiang Tian, Jie Cui, Arne Skauge

Keywords:

Internal Olefin Sulfonate, Optimal Salinity, Retention, Solubilisation Parameter, Ultra-Low Interfacial Tension

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