Electric Demulsification Dehydration of Crude Oil Added with Aging Oil from Zhongyuan Oilfield
中原油田老化油回掺电破乳脱水

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%.