Abstract: Development of demulsification techniques for crude oil emulsion is one of the most important research topics in petroleum industry. The recent advances in the demulsification of crude oil emulsion are reviewed，with emphasis on chemical，physical，and microbial demulsification. The advantages of such demulsifacation methods are summarized and the important research directions in the application of these methods in commercial scale are discussed.

摘要： 研发原油破乳技术是现代石油工业领域的重要研究方向之一。综述了原油破乳技术在近年所取得的研究进展，重点归纳和阐述了化学破乳、物理破乳和生物破乳法应用于原油破乳中的进展和各自的优势，并对发展工业规模原油破乳技术所需解决的主要问题和未来研究方向进行了探讨。