在水中加入水溶性的石油磺酸盐或非离子型表面活性剂,可以在油水界面上得到低界面张力。实验表明,单一的阴离子型或非离子型表面活性剂水溶液体系,在较窄的烷烃碳数范围内产生低界面张力;阴离子和非离子混合表面活性剂,在较宽的烷烃碳数范围内产生低界面张力。实验中应用烷烃代替实际的原油,使表面活性剂低张力体系的研究大为简化。测得了大庆原油的等效烷烃碳数(FACN)值为10,还测得了几种表面活性剂配方的烷烃碳数(ACN)值。 Adding water-soluble petroleum sulfonate or non-ionic surfactants to water provides low interfacial tension at the oil-water interface. Experiments have shown that a single anionic or nonionic surfactant aqueous solution system produces low interfacial tension over narrower alkane carbon numbers; anionic and nonionic mixed surfactants are produced over a wide range of paraffin carbon numbers Low interfacial tension. In the experiment, the use of alkane instead of the actual crude oil, the study of low-tension surfactant system greatly simplified. Daqing Crude’s equivalent alkane carbon number (FACN) was measured as 10, and the alkane carbon number (ACN) values ​​of several surfactant formulations were also measured.