胜利油田原油碱水体系的界面电性  

ELECTROKINETIC STUDY OF INTERFACE BETWEEN CRUDE OIL AND ALKALINE AQUEOUS SYSTEM

作　　者：叶锡麟[1] 李玉书[1] 俞稼镛[1] 

机构地区：[1]中国科学院感光化学研究所

出　　处：《油田化学》1989年第1期76-79,共4页Oilfield Chemistry

摘　　要：测定了胜利原油在 Na_4SiO_4、NaOH 水溶液中形成的乳状液的界面电性,并考察了无机盐的影响。与大港原油相比,胜利原油在碱水中具有稍高的电泳淌度,其极大值所对应的碱浓度也略低。原油酸值对界面电性有影响。在我们的研究中,酸值较低的原油一般在碱水中具有较低的电泳淌度。在溶液中加入二价阳离子使电泳淌度降低。钙离子对电泳淌度的影响大于镁离子。The interfacial electrokinetic behaviour (electrophonetic mobility) of emulsions consis- ting of some Shengli crude oils and aqueous solutions of Na_4SiO_4 and NaOH and the influ- ence of inorganic salts on this property are studied in this paper.In comparision with one of Dagang crude oils Shengli crude oils give higher electrophoretic mobilily with lower alka- line concentration at maximum mobility.Interfacial electrokinetic hehaviour is affected by acidity of the crude oil.In general cases the lower the acid value of a crude oil the lower electrophonetic mobility it gives in aqueous emulsions.Divalent cations existed in aqueous solutions decrease electrophonetic mobilities at interfaces of crude oil/aqueous alkaline solu- tion emulsions,while Ca^(++) is more influencing than Mg^(++) does.

关 键 词：原油 碱水 界面电性 

分 类 号：TE357.5[石油与天然气工程—油气田开发工程]