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以制备耐高温高盐的泡沫复合驱油体系为主要目的,研究了不同配比的非离子表面活性剂烷基多糖苷(alkyl polyglycosides,APG)和咪唑啉两性表面活性剂(2-Undecyl-N-Carboxymethyl-N-Hydroxyethyl Imidazoline,LC)复合体系在高温高盐条件下的界面张力、泡沫量和泡沫稳定性等,并用SVT20N旋转滴界面张力仪分别测定了不同配比的APG-LC复合体系在不同浓度时的油水界面张力.实验结果表明,APG与LC的配比会直接影响体系的界面张力,当其配比为6∶4且质量分数为0.3时,油水界面张力达到最低值.
In order to prepare high-temperature and high-salt foam composite flooding system, the effects of alkyl polyglycosides (APG) and imidazoline amphoteric surfactants (2-Undecyl-N -Cymethylmethyl-N-Hydroxyethyl Imidazoline, LC) composite system under high temperature and high salt conditions, the interfacial tension, the amount of foam and foam stability, and with SVT20N spinning drop interfacial tension meter were measured in different proportions of APG-LC composite system The experimental results show that the ratio of APG to LC will directly affect the interfacial tension of the system, and the interfacial tension of the system will reach the lowest when the ratio is 6: 4 and the mass fraction is 0.3.