Keywords Petroleum Carboxylate;Sulfonates;Combinational Surfactant Systems;Ultralow Interfacial Tension;Daqing Crude Oil from The 4rd Production Factory;Chemical Flooding Agent;

• 石油羧酸盐;磺酸盐;复配表面活性剂体系;超低界面张力;大庆四厂原油;化学驱油剂;