对合成的不同碳链脂肪醇聚氧乙烯醚磺酸钠(AnESO,EO=3,n=14,16,18)的应用性能及与重烷基苯磺酸钠(HABS)的复配进行了研究.结果表明:(1)AnESO的γcmc分别为36.16 mN·m-1,35.47 mN·m-1和34.85 mN·m-1,A14ESO发泡性较好,A18ESO稳泡性较强,耐钙稳定性分别达到了8700mg/L,9500mg/L和10000mg/L,耐盐性为A18ESO ＞ A16ESO ＞A14ESO;(2)AnESO与HABS复配可以改善HABS的耐盐性,AnESO/HABS体系与大庆原油间的界面张力在ω(AnESO):ω(HABS)约为3:7时最低,达到了3.9×10-2mN·m-1,1.4×10-2mN·m-1和4.3×10-3mN·m-1,A18ESO/HABS体系油水界面张力在NaCl含量为0～15000mg·L-1下均达到10-3mN·m-1数量级.%The applied properties of sodium fatty alcohol polyoxyethylene ether sulfonates (AnESO,EO=3,n=14,16,18) with different length of hydrophobic chains were studied,and the mixture system of AnESO/heavy alkylbezene sulfonate(HABS) was also studied.The results show that (1) theγcmc were 36.16 mN·m-1,35.47 mN·m-1 and 34.85 mN·m-1 respectively,A14ESO's foaming ability was better,A18ESO's foam stability was better,calcium-tolerant stability reached 8700mg/L,9500mg/L and 10000mg/L,while salt tolerance rank was 18ESO ＞ A16ESO ＞A14ESO;(2) AnESO rncan improve the salt tolerance of mixture of AnESO and HABS.At ω(AnESO):ω(HABS)≈3:7,the synergistic effect of mixture was the strongest,the Daqing crude oil/water interfacial tension reaches 3.9×10-2mN·m-1,1.4×10-2mN·m-1 and 4.3×10-3mN·m-1respectively.And for A18ESO/HABS,the interfacial tension was almost maintained under 10-2mN/m with cNaCl from 0 to 15000mg/L.So fatty alcohol polyoxyethylene ether sulfonate has good application prospect for enhancing oil displacement system,especially for high salinity oil reservoir.
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