李柏林,牛瑞霞,程杰成
LI Bai- lin;et al. (Daqing Petroleum Institute;Daqing 163318;

• 1:大庆石油学院
• 2:大庆石油学院
• 3:大庆石油学院 黑龙江大庆　163318
• 4:黑龙江大庆　163318

摘要(Abstract)：

以海明1622为滴定剂,以亚甲基蓝 甲基橙混合物为指示剂,采用两相滴定法,测定了三次采油用石油磺酸盐中有效物的含量。通过对影响滴定因素的考查,确定了滴定分析条件。结果表明:当亚甲基蓝与甲基橙的质量比为5:1,配成含有0 1%亚甲基蓝和0 02%甲基橙的混合指示剂,加量在4～8滴,可以明显地观察到终点颜色变化,其变化特点为上相由粉红色至蓝色,下相由蓝色至绿色。用该方法测定三次采油用石油磺酸盐有效物含量,终点清晰,干扰小,操作简便,重现性好,其相对标准偏差小于1 0%。
This paper introduces the two- phase titration method,which uses hyamine 1622 as the titrant,the mixture of methylene blue and methyl orange as the indicator,to determine the active matter among PS (petroleum sulfonate) employed to enhance oil recovery.By studying the factors affecting titration results,we optimize the titration condition and prepared the mixed indicator solution which contains 0.1 wt% methylene blue and 0.02 wt% methyl orange (the concentration ratio of two indicators is 5:1). The investigation shows that,with the addition of 4-8 drops of the mixed indicator,when the end- point is obtained,the pink color of the aqueous phase becomes blue and the blue color of the chloroformic phase becomes green.The both color change can be observed clearly.The two- phase titration has many advantages such as obvious end- point,low disturbance,easy- to- operate and good repeatability.In addition,its relative standard deviation is less than 1.0%.

关键词(KeyWords)： 三次采油;石油磺酸盐;两相滴定;亚甲基蓝;甲基橙
tertiary oil recovery;PS (petroleum sulfonate);two- phase titration;methylene blue;methyl orange

Abstract:

Keywords:

基金项目(Foundation):

作者(Authors): 李柏林,牛瑞霞,程杰成
LI Bai- lin;et al. (Daqing Petroleum Institute;Daqing 163318;

参考文献(References)：

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