Abstract: In order to study the contribution of each component in the flooding, the composite system concluding sulfonate gemini surfactant TADS10, polymer with a molecular weight of 15 million and Na2CO3 was used to conducte flooding experiments on a lithography glass model. According to oil displacement effect of composite system, the impact of the interfacial tension, polymers, alkali and organic pure on oil displacement was analyzed. The results showed that ultralow interfacial tension was generated by TADS10 and petroleum sulfonate complex which raised chemical flooding oil recovery by 2.6%. After adding the polymer binary system, chemical flooding recovery was increased by nearly 10% compared with a single system, and total recovery was increased by 12.13%. Chemical flooding recovery was increased by 2.73% when weak base ternary was added compared with binary system. The chemical flooding oil recovery was enhanced by 1.23% after adding 0.02% alcoholin the ternary system, and total recovery was increased by 1.31%.

Key words: Composite system,    ,  Surfactant,    ,  Interfacial tension,    , Polymer

摘要： 为了研究复合体系各组分在驱油过程中的贡献程度, 利用磺酸盐双子表面活性剂TAD S - 1 0与相对分 子质量为15 0 0万的聚合物以及 N a 2CO3 配制的复合体系在光刻玻璃模型上进行原油驱替实验, 根据复合体系的驱 油效果, 分析界面张力、 聚合物、 碱以及正丁醇对驱油效果的影响。结果表明, TAD S - 1 0与石油磺酸盐复配产生的超 低界面张力使得化学驱采收率提高2. 6%; 加入聚合物后的二元体系与一元体系相比, 化学驱采收率提高1 0%左右, 总采收率提高1 2. 1 3%; 加入弱碱的三元体系化学驱采收率较二元体系提高2. 7 3%; 而三元体系加入质量分数为 0. 0 2%醇后化学驱采收率提高1. 2 3%, 总采收率提高1. 3 1%。

关键词: 复合体系, 表面活性剂,  , 界面张力, 聚合物