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以石油中间产品为原料，合成了烃基苯磺酸盐表面活性剂ＡＳ－４。考察了盐浓度，碱浓度和ＡＳ－４ 浓度对ＡＳ－４ 水溶液与原油体系的动态界面张力的影响。结果表明，当Ｎａ２ＳＯ４ 浓度为５～１５ｇ／Ｌ，ＮａＯＨ 浓度为５～１０ｇ／Ｌ，ＡＳ－４ 浓度为０．１～０．５ｇ／Ｌ的条件下，ＡＳ－４ 水溶液与原油体系的动态界面张力具有１０－ ３ｍ Ｎ／ｍ 以下的超低最小值。还研究了ＡＳ－４ 表面活性剂的组成（不同的异构体）对其水溶液与原油体系的动态界面张力的影响。
Using petroleum intermediate as raw material, alkylbenzenesulfonate surfactant AS-4 was synthesized. The effects of salt concentration, alkali concentration and AS-4 concentration on the dynamic interfacial tension of AS-4 aqueous solution and crude oil system were investigated. The results showed that when the concentration of Na2SO4 was 5-15 g / L, the concentration of NaOH was 5-10 g / L and the concentration of AS-4 was 0.1-0.5 g / L, the dynamic interface between AS-4 aqueous solution and crude oil system Tension has an ultra-low minimum of 10-3 mN / m. The effect of the composition of the AS-4 surfactant (different isomers) on the dynamic interfacial tension of its aqueous solution to the crude oil system was also studied.