热德拜原油破乳低效的机理分析及高效破乳剂的优选  

MECHANISM ANALYSIS OF LOW EFFICIENT DEMULSIFICATION OF ZHETYBAI CRUDE AND SELECTION OF OPTIMIZED HIGH EFFICIENT DEMULSIFIER

作　　者：郭东红[1] 韩建国 辛浩川[1] 崔晓东[1] 

机构地区：[1]中国石油勘探开发研究院油田化学研究所,北京100083 [2]中油国际曼格什套有限责任公司

出　　处：《石油炼制与化工》2012年第10期103-106,共4页Petroleum Processing and Petrochemicals

基　　金：中国石油技术开发公司资助项目(CPT-DC10EX3180820-005)

摘　　要：针对哈萨克斯坦热德拜原油破乳脱水过程中破乳剂加量高、乳化中间层厚等破乳低效问题,从机理出发进行分析研究。结果表明,热德拜油田采出液中原油高含蜡、高含盐、一定量的机械杂质以及低效的现场破乳剂是破乳脱水低效、易形成乳化中间层的重要原因。为了提高原油破乳脱水性能、减弱乳化中间层厚度,通过室内破乳脱水实验,优选出BKP-62高效破乳剂。界面张力测试结果表明,破乳剂BKP-62的界面活性明显高于现场破乳剂,进一步说明其破乳脱水性能应该明显优于现场破乳剂。During the demulsification and dehydration of Zhetybai crude,poor demulsification effect including high consumption of demulsifier and thick middle layer of emulsion happened,thus cause discussion was carried out based on mechanism analysis.It can be seen that the main reasons of poor demulsification are related to Zhetybai crude having high wax and salt content,the existence of certain mechanical impurities and the demulsifier used onsite was low efficient.To improve the demulsification and dehydration process of Zhetybai crude,a high efficient demulsifier,BKP-62,was developed and compared with the onsite one.Lab test results show that the dehydration performance of BKP-62 demulsifier is much better,besides,from the test results of interfacial tension,BKP-62 exhibits significant higher interfacial activity than that of the onsite one,which indicates that its demulsification and dehydration performance should be much better.

关 键 词：哈萨克斯坦 热德拜原油 破乳剂 破乳 界面张力 

分 类 号：TE868[石油与天然气工程—油气储运工程]