以冷家、曙光采油厂和特种油公司的特(超)稠油为对象,研究了破乳剂结构与性能之间的规律。通过探讨破乳剂在破乳过程中的清水机理,运用表面活性剂结构与性能关系理论,结合原油的组成特点,进行了破乳剂分子的结构设计与合成。实验证明:此类清水型特(超)稠油破乳剂具有脱水率高和清水能力强的特点。 Taking the special (ultra) heavy oil of Lengjia, Shuguang Oil Refinery and Specialty Oil Company as the object, the law between the structure and performance of the demulsifier was studied. By discussing the mechanism of water demulsifier in the demulsification process, using the theory of the relationship between structure and properties of surfactant, combined with the composition of crude oil, the structure design and synthesis of demulsifier were carried out. Experiments show that: This type of water-type super (ultra) heavy oil demulsifier with high dehydration rate and ability to clear water features.