关键词: 人工海水, 原油乳化液, 脂肪胺, 破乳脱水, 乳化剂, 试验研究, 油水分离, 破乳剂, 脂肪醇, 正丁醇

Abstract: Tetraoxyethylene nonylphenol ether and monoglyceride stabilized distilled water,man-made formation water/man-made formation oil emulsions and brine/North Sea crude oil emulsions have been destabilized by organic solvent-like systems.The two emulsion systems have the same tendency and similar efficiency of deemulsification.Among these destabilizers the best ones are fatty amines,followed by fatty alcohols.Fatty amines will react strongly with the surface groups on the interfacial film,while the medium-chain-length alcohols will destabilize due to a diffusion/partition mechanism.When the dispersed phase is man-made formation water,both mechanizms are weakened.With the preasence of wax particles,the efficiency of the amines remains practically unchanged while the efficiency of the fatty alcohols declines.The highest destabilizing efficiency is obtained when a fatty acid and a fatty amine is used tegether.In this case the interface will contain charged acid/amine complexes and the film will be too hydrophilic to protect oil-continuous emulsions.