Influence of Foam Apparent Viscosity and Viscoelasticity of Liquid Films on Foam Stability |
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| Authors: | Shuyan Chen Yujie Zhou Gehua Wang Wenjun Li Youyi Zhu |
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| Institution: | 1. Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing, China;2. Department of Chemistry and Chemical Engineering, University of Science and Technology Beijing, Beijing, China;3. Research Institute of Petroleum Exploration and Development, State Key Laboratory of Enhanced Oil Recovery, Beijing, China |
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| Abstract: | The objective of this research work was to study the relationship among the apparent viscosity of bulk foam, the viscoelasticity of liquid films, and foam stability. Bulk foam tests showed that the drainage half-life of AOS foam was higher than that of sodium dodecyl sulfate (SDS) and hexadecyltrimethyl ammonium bromide (CTAB) foams. The results of foam apparent viscosity revealed that the foam apparent viscosity was related to foam quality rather than foam stability. Higher film viscoelasticity modulus could be assigned for α -olefin sulfonate (AOS) films than those for SDS and CTAB ones. The film conductivity tests indicated that AOS liquid films, compared with SDS and CTAB liquid films, could delay the liquid drainage speed under dynamic conditions. Compared with foam apparent viscosity, the viscoelasticity of liquid films appeared to be a key factor in foam stability. |
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| Keywords: | Foam liquid film stability viscoelasticity apparent viscosity |
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