Acta Phys. -Chim. Sin. ›› 2005, Vol. 21 ›› Issue (02): 161-165.doi: 10.3866/PKU.WHXB20050210

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The Interface Behavior and Enhanced Oil Recovery Mechanism of Heavy Alkylbenzene Sulfonates

ZHANG Yue;ZHANG Gao-Yong;WANG Pei-Wei;NIU Jin-Ping;GUAN Jing-Cai;GU Hui-Xian   

  1. China Research Institute of Daily Chemical Industry, State Research Center of Surfactant Engineering, Taiyuan 030001
  • Received:2004-06-18 Revised:2004-09-08 Published:2005-02-15
  • Contact: ZHANG Gao-Yong E-mail:zyyf@vip.sina.com

Abstract: Heavy alkylbenzene sulfonates (HABS) have been applied in enhanced oil recovery(EOR) for many years, but the effect of oil flooding is quiet different as variety of HABS composition. In this study, HABS was separated into 6 group-types with column chromatography, and dialkylbenzene, polyphenylalkane, monoalkylbenzene, alkylnaphthalene were sulfonated and purified. The interfacial tension (IFT) and the synergistic effect between these components were studied,and the mechanism and rules of the synergistic effect between HABS components were obtained from the EACN value of oil and the nmin values of HABS components. Moreover, the rules were further confirmed by the synergistic effect between LAS and the HABS components.

Key words: Heavy alkylbenzene sulfonates(HAS), Equivalent alkane carbon number(EACN), Enhanced oil recovery, Interfacial tension