After the wettability of oil sand is changed to oil wetting with silicone oil, the adsorbance of surfactant would increase.

• 用硅油使油砂润湿改变后，表面活性剂在油湿性油砂的吸附比在水湿性油砂上吸附大。 分析了表面活性剂在油砂上出现最大吸附的机理，分两步建立了表面活性剂在大庆油砂上的吸附模型。