Abstract: Based on self-developed high-voltage/high-frequency pulse AC power and high-voltage/industrial frequency power, the comparison experiments were carried out with the aging oil and ordinary crude oil from Zhongyuan oilfield to study the dehydration performance, and the impacts of frequency, voltage, aging oil content, water content on demulsification efficiency were examined. The results showed that increasing the frequency appropriately was conducive to aging oil demulsification, compared with 500 Hz, the dehydration efficiency of electric field of 1500 Hz was improved by 10.3% averagely, the maximum was 35.0%, the result of high frequency was much better than industrial frequency. Increasing the intensity of electric field appropriately was also conducive to aging oil demulsification, compared with 1 kV, the dehydration efficiency of electric field of 4 kV was improved by 40.6% averagely, the maximum was 81.1%.

Key words: aging oil, demulsification, dehydration, high-voltage/high-frequency electric field, industrial frequency electric field, electric field parameter

摘要： 采用自制的矩形波高压/高频脉冲交流电源和高压/工频电源，对中原油田的老化油和原油进行了破乳脱水性能的对比实验，考察了电场频率、电压、老化油含量、含水率等对老化油破乳效果的影响. 结果表明，在一定范围内适当提高电场频率有利于老化油破乳，1500 Hz较500 Hz的脱水率平均提高10.3%，最高达35.0%；高频电场脱水效果远优于工频电场；适当提高电场强度有利于老化油破乳，4 kV较1 kV的脱水效率平均提高40.6%，最高达81.1%.

关键词: 老化油, 破乳, 脱水, 高压/高频电场, 工频电场, 电场参数