The initial low IFT is very advantageous to enhance oil recoveries, petroleum carboxylat of compound surfactant play the sacrificial agent role in the process of absorption and reduced the sulphonate absorption loss.

• 复配表面活性剂吸附过程中羧酸盐起到了牺牲剂作用，降低了磺酸盆的吸附损失，复配体系的这些特点对提高驱油效率很有利。