混合溶液中石油羧酸盐和磺酸盐含量的测定  

QUANTITATIVE DETERMINATION OF PETROLEUM CARBOXYLATE AND SULFONATE IN MIXED AQUEOUS SOLUTION

作　　者：吴一慧[1] 黄宏度[2] 王尤富[2] 程艳[2] 曾繁涤[1] 

机构地区：[1]华中理工大学化学系,湖北武汉430074 [2]江汉石油学院石油工程系,湖北荆州434102

出　　处：《油田化学》2000年第3期281-284,共4页Oilfield Chemistry

摘　　要：利用石油羧酸盐与磺酸盐在不同酸碱性条件下不同的存在形式 ,研究并建立了石油羧酸盐 磺酸盐复配体系中两种表面活性剂含量的测定方法 ,即分步滴定的方法。用溴甲酚绿碱性分相滴定法测定体系中表面活性剂的总含量 ,用百里酚蓝 次甲基蓝酸性分相滴定法测定体系中磺酸盐的含量 ,从总含量中扣除磺酸盐的含量即为羧酸盐的含量。该方法操作简便、快速、可靠性强 ,已成功运用于室内驱油实验研究。The mixture of petroleum carboxylate with sulfonate is used as EOR surfactants to create ultralow interfacial tension. In this work a double titration method is developed to determine quantitatively the carboxylate and sulfonate in the mixed surfactant solutions: two phase alkaline titration with bromocresol green as indicator for carboxylate+sulfonate and two phase acidic titration with a mixed indicator thymol bule+methylene blue for sulfonate. This method is simple and convenient and the determinations are reliable. Inorganic salts(Na 2SO 4, Na 2CO 3 and NaCl) and HPAM, which commonly used in chemical flooding solutions, have shown to have little interference with the determination. The chemical reactions involved in the titration processes are discussed.

关 键 词：石油羧酸盐 磺酸盐 驱油 表面活性剂 混合溶液 

分 类 号：TE39[石油与天然气工程—油气田开发工程] TQ423.46[化学工程]