JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE) ›› 2015, Vol. 45 ›› Issue (2): 89-94.doi: 10.6040/j.issn.1672-3961.0.2014.226

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Emulsion stability of simulated polymer/surfactant flooding produced water

MIAO Ling, LI Yujiang, LI Feng   

  1. School of Environmental Science and Engineering, Shandong University, Jinan 250100, Shandong, China
  • Received:2014-08-12 Revised:2015-03-17 Online:2015-04-20 Published:2014-08-12

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Abstract: The mechanism of oil-displacing agent for the emulsion stability of polymer/surfactant produced water was studied in detail by preparing the simulated polymer/surfactant flooding produced water with light oil (V(petroleum ether):V(benzene)=9:1), which had a comparatively simple component instead of crude oil with complex component. The interfacial tension, Zeta potential of oil droplets and the rheology of oil-water interface were investigated by spinning drop inferface tensiometer, Zeta potential analyzer and surface rheology analyzer.The effects of WPS (petroleum sulfonate), HPAM (partially hydrolyzed polyacrylamide)and salinity on oil-water separation were studied. The results showed that WPS could reduce the interfacial tension and enhance the stability of produced water.With the concentration of HPAM increasing, the bulk phase viscosity increased, which had little effects on final emulsion stability. The increasing salinity could greatly enhance the stability of produced water, which could provide reference for the study of emulsion stability of produced water.

Key words: simulated produced water, light oil, emulsion stability, polymer/surfactant flooding, salinity

CLC Number: 

  • X703
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