老化油聚醚破乳剂的制备与性能评价

Synthesis and performance evaluation of polyether demulsifier on aged oil

为解决辽河油田老化油处理难度大,破乳脱水较为困难的问题,以苯酚、乙二醇、氯化氢、甲醛和三乙烯四胺等物质合成起始剂,再与环氧乙烷和环氧丙烷聚合生成聚醚破乳剂,并通过与氯化苄或2,6-甲苯二异氰酸酯进行改性得到改性老化油聚醚破乳剂。分析了聚醚破乳剂的浊点、HLB值,开展了辽河油田老化油的脱水实验。结果表明,水溶改性老化油破乳剂破乳效果最佳。水溶改性老化油破乳剂WLJEP5在85℃下对老化油的破乳率达到95.72%,与现有辽河油田所用老化油破乳剂相比破乳率提高了8%。研究结果为提高老化油的破乳效率,解决脱水困难等问题提供了参考。

In order to overcome the difficulties in aged oil treatment in Liaohe oilfield,namely its demulsification and dehydration,the Initiator was synthesized using phenol,ethylene glycol,hydrogen chloride,formaldehyde and triethylenetetramine.The Initiator was then polymerized with ethylene oxide and propylene oxide to form a polyether demulsifier,and modified with benzyl chloride or 2,6-toluene diisocyanate to obtain a modified aged oil polyether demulsifier.In this study,the cloud point and HLB value of the polyether demulsifier were analyzed,and the dehydration experiment of aged oil in Liaohe oilfield was carried out.The results showed that the water-soluble modified aged oil demulsifier has the best demulsification effect.The water-soluble modified aged oil demulsifier WLJEP5 had a demulsification rate of 95.72%at 85℃,which is 8%higher than that of the existing aged oil demulsifier used in Liaohe oilfield.This paper provides valuable reference for improving the demulsification efficiency of aged oil and overcoming challenges such as difficulties in its dehydration.