以丁二酸酐、2-[2-（二甲基氨基）乙氧基]乙醇和溴代十六烷（C₁₆H₃₃Br）为原料，合成了一种酯基型Gemini双季铵表面活性剂（简称为GS16-EEG-16）。采用红外光谱（FT-IR）和核磁共振光谱（¹H-NMR）对产物结构进行表征。复配得到最终配方为8 g SAS-60、3 g 6501、3 g吐温80和0.6 g GS16-EEG-16。性能测试结果表明，随着复配体系中GS16-EEG-16质量的增加，表面活性剂越易聚集缔合成胶束。0.6 g双子加量的表面活性剂复配体系乳化系统中，油/水分离时间达到96 min，且在聚四氟乙烯板（简称PTFE）上的接触角为63°，说明其具有很好的乳化性能和润湿性能。0.6 g双子加量的表面活性剂复配体系仅用28 min便可将油/水界面张力降低至1.9×10^-3 mN/m，最终驱油效率达52.5%。

An ester-based gemini double quaternary ammonium salts surfactant (GS16-EEG-16) is prepared with succinic anhydride,2-ethanol and C₁₆H₃₃Br as raw materials.The obtained product is characterized by FT-IR and ¹H-NMR.And the final compound formulation includes 8 g of SAS-60,3 g of 6501,3 g of Tween 80 and 0.6 g of GS16-EEG-16.The results from performance determination show that the surfactant becomes more easily aggregated into micelles with the increase of the mass amount of GS16-EEG-16 in the compound system.The results of emulsification and wet ability test show that the oil/water separation time reach 96 min in the emulsification system of 0.6 gram gemetic additive surfactant compound system and the contact angle on PTFE is 63°,indicating that it has good emulsifying properties and wetting properties.With the 0.6 gram gemetic additive surfactant compound system,the interfacial tension of oil/water can be reduced to 1.9×10^-3 mN·m^-1 in 28 minutes only,and the final oil displacement efficiency is 52.5%.

杨剑(1983-),女,硕士,工程师,研究方向为油田化学品,yjian2-cq@petrochina.com.cn