本文从以下几方面讨论了原油破乳剂的选择;破乳剂的最佳破乳浓度;破乳剂的破乳温度;破乳剂的破乳速度。破乳剂的HLB值;破乳剂的协同效应;破乳剂的溶解性能;破乳剂中的EO含量。 This article discusses the following aspects of the choice of crude oil demulsifier; demulsifier best demulsification concentration; demulsifier demulsification temperature; demulsifier demulsification rate. HLB value of demulsifier; Synergistic effect of demulsifier; Dissolution property of demulsifier; EO content in demulsifier.