【作者】 张祝新；

【导师】 吴文祥；

【作者基本信息】 大庆石油学院 ， 油气田开发工程， 2009， 硕士

【摘要】 目前,三元复合驱虽已进入工业化应用阶段,但三元复合驱所带来的采出液处理困难以及对地层造成损害等问题很大程度上限制了三元复合驱工业化推广。相比之下,二元复合驱配方中未使用碱,矿场可操作性更强,因而受到油田的欢迎。但是由于不用任何碱,原油中石油酸类活性物质不能得到充分利用,所以研发具有更高表面活性的新型表面活性剂和无碱二元复合驱配方势在必行。针对此问题本文主要对无碱驱油体系表面活性剂磺基、羧基甜菜碱界面特性进行了系统评价,并对优选出的表面活性剂进行了吸附实验、稳定性实验及驱油物理模拟实验。研究结果表明:磺基甜菜碱表活剂SB4与SB1复配,在SP二元体系中界面张力只有0.05%,0.025%两个浓度点达到超低,其余点界面张力只有10^-2mN/m,SB4与11#复配的协同效应要好于SB4与SB1复配,能与大庆原油在加入聚合物的情况下形成超低界面张力(＜10^-3mN/m数量级);SB4与11#按1:1比例配制,0.2%浓度的样品稳定性非常好,在测试150天中界面张力数据均在（2～4.5）×10^-3mN/m之间;磺基羟基甜菜碱表活剂B与13#复配测大庆油田前六个厂的界面张力,均摸索出适合各个厂的复配比例,使界面张力达到了10^-3mN/m超低界面张力;在S、SP、ASP体系中,磺基羟基甜菜碱B的吸附量均低于羧基甜菜碱11#,羧基甜菜碱11#的吸附量均低于重烷基苯磺酸盐;综合所有均质和非均质岩心的实验结果并通过分析,我们认为采用磺基羟基甜菜碱B活性剂的无碱二元驱油体系与采用Ss的弱碱（Na₂CO₃）三元体系和采用Sy的强碱（NaOH）三元体系驱油效果基本相当。更多还原

【Abstract】 Currently, the ASP flooding has entered the industrialization stage, but ASP flooding bringing about the difficulty in processing the produced liquid and formation damage caused to a large extent limitation to the populating ASP industrialization. By contrast, the binary compound flooding system without alkali is popular in the oil field with strong application on the spot. But as no alkali, petroleum acid active substances can not be fully utilized, so it is imperative to research and develop a new kind surfactants and non-alkali compound formula. In this paper, it mainly does the research on systematic evaluation on interfacial properties of the carboxyl betaine surfactant and sulfosalicylic and implements physical simulation experiments with the surfactant systems through the optimization of the surfactant adsorption experiments and the stability of oil displacement experiments.The results show in the following. The binary compound systems with the surfactants compound of SB4 and SB1 can form the ultralow interfacial tension at two concentration of surfactant, 0.05%, 0.025%; others only reach 10^-2 mN/m. While the effect of the compound of SB4 and 11# is better, which can form ultralow IFT(<10^-3mN/m) with crude oil in Daqing, and the concentration 0.2% has better stability, between 2×10^-3and 4.5×10^-3mN/m during 150 days’ trial according to the proportion 1:1 of SB4 and 11#. We also find the best proportion of B-kind sulfosalicylic surfactant and 13# forming the ultralow IFT(10^-3mN/m) with oil in six oil production plant of Daqing oil field. In surfactant systems, surfactant-polymer systems and alkali-surfactant-alkali systems, the absorption of sulfosalicylic surfactant is lower than that of carboxyl betaine surfactant, which is lower than that of heavy alkyl benzene sulfonate. According to the analysis of the results of experiments on the homogeneous cores and heterogeneous cores, we consider that the non-alkali binary compound flooding system with sulfosalicylic surfactant B have the same effect of flooding as the sodium hydroxide ternary alkali flooding system and the Ss weak-alkali ternary system.更多还原