The complicated nature of crude oil emulsions is part of the major setbacks associated with the postulation of methods for phase separation and demulsification in the oil industry. Despite the increasing efforts in generating efficient and dependable demulsification methods, the majority of emulsions cannot be shattered in reduced times. This review examines the trending techniques of crude oil demulsification in the petroleum industry. Several approaches have been examined to discover the best method of demulsification. Hence, this reports reviewed the past studies on the emulsion, formation of oil emulsions, methods of demulsification, characteristics of demulsifier, mechanism of demulsification, kinetics in demulsification, operating parameters influencing the demulsification processes, the structure of demulsifier, and formulations that are involved in the demulsification. The formulations of crude oil demulsification have been investigated to unveil adequate demulsifiers for crude oil. Therefore, demulsification approaches have several applications due to wider varieties of crude oil, separation equipment, brines, chemical demulsifiers, the method in which demulsifiers is been formulated, and product specifications.

原油乳液的复杂性是与石油工业相分离和破乳方法的假设相关的主要挫折的一部分。尽管人们越来越努力地开发高效、可靠的破乳方法，但大多数乳液无法在短时间内破碎。本综述探讨了石油工业中原油破乳技术的趋势。人们对多种方法进行了研究，以发现最佳的破乳方法。因此，本报告回顾了以往关于乳状液、油乳状液的形成、破乳方法、破乳剂的特性、破乳机理、破乳动力学、影响破乳过程的操作参数、破乳剂的结构以及所涉及的配方的研究。在破乳中。对原油破乳剂的配方进行了研究，以揭示适合原油的破乳剂。因此，由于原油种类、分离设备、盐水、化学破乳剂、破乳剂的配制方法和产品规格的变化，破乳方法具有多种应用。