原油乳状液稳定性研究Ⅶ.蜡晶对油水界面膜性质的影响  

A STUDY ON STABILITY OF WATER IN CRUDE OIL EMULSIONSⅦ.The Influence of Wax Particles on Properties of Interfacial Film between Oil and Water

作　　者：李明远[1] 甄鹏 纪淑玲[1] 吴肇亮[1] 王继有 

机构地区：[1]石油大学,北京102200 [2]辽宁省化工研究院,大连116023

出　　处：《石油学报（石油加工）》1999年第5期1-5,共5页Acta Petrolei Sinica(Petroleum Processing Section)

摘　　要：对分别含有大庆、吉林原油界面活性组分的航空煤油（模型油）与蒸馏水及模拟地层水在不同温度下的界面粘度、界面膜屈服值进行了测定。结果发现， 由于吉林原油界面活性组分含有较多的蜡晶， 当温度较低时，随温度升高， 吉林模型油界面粘度逐渐升高，界面膜表现为负触变性； 在大庆模型油中加入５％ 的合成蜡，蜡晶将大庆模型油与蒸馏水的界面特性由假塑性流体改变为胀流体。研究表明，蜡晶能够改变油水界面膜的流变特性， 增加界面膜的强度。The interfacial viscosity between water phases(distilled water or formation water)and model oils added with interface active compounds from Daqing,Jilin crude oils(named Daqing model oil and Jilin model oil,respectively)was measured at different temperatures respectively.The results showed that at relatively low temperatures,the interfacial viscosity between water and Jilin model oil increased as the temperature increased which showed a negative thioxtropy behavior like a three dimension system.This interfacial rheological property is due to higher concentration of wax in Jilin crude oil than that in Daqing crude oil.It has been further proved that wax particles can modify the properties of interfacial film by measuring the interfacial viscosity between Daqing model oil with 5% synthesized wax added and water phase.The experiments indicated that wax particles contribute to rheological properties of interfacial film,thus can also effectively enhance the strength of the interfacial film.

关 键 词：界面粘度 流变特性 原油 蜡晶 强度 油水界面膜 

分 类 号：TE622.5[石油与天然气工程—油气加工工程]