非离子表面活性剂静吸附特性研究

针对S/P二元复合体系在油层岩石上的吸附问题，利用室内仪器等检测分析方法,对无碱二元复合体系在润湿和非润湿大庆油砂吸附后活性剂体系浓度、界面张力进行了测定评价.结果表明：二元体系表面活性剂在大庆油砂上的吸附等温线为“S”型，最大吸附量为2.43mg/g；更换油砂单次吸附时，吸附次数增加，界面张力增加，活性剂浓度降低；，二元体系经聚合物和污水浸泡的油砂第三次吸附时界面张力由10-3mN/m上升到10-1mN/m；多次吸附对二元体系界面张力的影响很小。随着吸附次数的增加，活性剂浓度逐渐降低。

Study on the Characteristics of Static Adsorption

According to the issues that the system of S/P binary complex's adsorption on the rocks which resisted in the oil reservoir,with the analyzing methods such as indoor instruments,the concentration and interfacial tension of the active agent were tested and evaluated after which,belonging to the system of alkali-free binary complex's adsorption,were used to absorb the Daqing wetting or non-wetting oil sands.The results show that: the adsorption isotherm of binary system surfactant on the Daqing oil sands is t...