Demulsification of the Emulsified Crude Oil and Defoaming of the Foaming Crude Oil

  • Caili DaiEmail author
  • Fulin Zhao


The demulsification of emulsified crude oil and defoaming of the foaming crude oil are discussed in this chapter. There are mainly two types of emulsified crude oil, water-in-oil (W/O) emulsified crude oil and oil-in-water (O/W) emulsified crude oil. Heating method, electronic method, and chemical method are commonly used for the demulsification of emulsified crude oil. Those methods are always used in combination, named as heat–electronic–chemical method. The problems of foaming in crude oil are mainly encountered in the process of oil–gas separation and oil stabilization, during which natural gas is released from crude oil by reducing pressure and (or) elevating temperature. Crude oil defoamers including solvent defoamers, surfactant defoamers, and polymer defoamers are introduced.


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© Springer Nature Singapore Pte Ltd. and China University of Petroleum Press 2018

Authors and Affiliations

  1. 1.School of Petroleum EngineeringChina University of Petroleum (East China)QingdaoChina

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