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| Solution properties of cocoamido propyl hydroxy sulfobetaine and salt olefin sulfonate compounded system |
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LIU Hongsheng1, YANG Li1, GAO Manglai2
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(1.Exploration and Development Research Institute of Daqing Oilfield Limited Company, Daqing 163712, China;2.State Key Laboratory of Heavy Oil Processing in China University of Petroleum, Beijing 102249, China)
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| Abstract: |
| In order to study the solution properties of cocoamido propyl hydroxy sulfobetaine (CHSB) and sodium alpha-olefin sulfonate (AOS) compounded system, the surface dilatational viscoelasticity and foam property of compounded system were characterized by interfacial rheometer and foam scanner. And the flow control ability of this compounded system was investigated by foam flooding instrument. The results show that when the mass ratio of CHSB and AOS is 4∶6, the surface adsorption amount of the compounded system is the largest, and the average area of the molecules occupation is the smallest. The surface dilatational viscoelasticity of compounded system is better than that of the single CHSB or AOS. The elasticity of the surface film for compounded system is dominant. And the foam stability of the compounded system is improved significantly. The flow control ability of the compounded system is better than that of single CHSB or AOS. The effect of temperature or salt on compounded system is slight. |
| Key words: cocoamido propyl hydroxy sulfobetaine interfacial rheometer foam scanner surface dilatational viscoelasticity foam property |
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