摘要
研究了烷基苯磺酸盐表面活性剂在大庆油砂上的吸附特征。提出了其吸附等温线属于Giles分类法的“S”型等温线的观点。表面活性剂浓度在0.05%左右时出现吸附最大值,为1.56mg/g,发生在临界胶束浓度CMC附近。浓度大于0.1%,油砂表面的吸附与脱附达成平衡,吸附等温线出现平台。同时,探讨了碱、聚合物、温度对吸附特征的影响。制定三元复合驱体系配方时,必须参照该活性剂的吸附等温线,实际配方浓度应大于最大吸附量对应的浓度。
The adsorption characteristics of alkylbenzene sulfonates on reservoir sand in Daqing oilfield is systematically studied in this paper.The view that adsorption isotherms of surfactant attaches to ＂S＂type in Giles taxonomy is put forward.When the concentration of the surfactant is about 0.05%,the maximum adsorption value of 1.56mg/g is reached,which is near to the critical micelle concentration（CMC）.When the concentration of surfactant is above 0.1% ,the adsorption and desorption on the reservoir sand are balanced,in which the adsorption isotherm is level.The influences of alkali ,polymer,and temperature on adsorption isotherms are also discussed.As establishing the formula of alkali surfactant polymer （ASP）flooding,the adsorption isotherms should be consulted and the practical prescription concentration should be reached above the concentration corresponding to maximum adsorption This research is very helpful to the formula of ASP flooding.
出处
《中外能源》
CAS
2006年第5期45-47,共3页
Sino-Global Energy
关键词
烷基苯磺酸盐
表面活性剂
吸附
碱
聚合物
alkylbenzene sulfonate
surfactant
adsorption
alkali
polymer
