The factors that affect crude oil desalting and dehydration are presented in this paper,among which influence of demulsifier is analyzed in detail to provide reference for related researches.%本文就油田原油脱水脱盐的影响因素进行阐述，对破乳剂给油田原油脱水脱盐带来的影响进行全面分析，为油田原油脱水脱盐的相关研究提供可参考依据。
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