硫酸铝－聚合物钻井液中硫酸铝含量的测定方法  

DETERMINATION OF Al_2 (SO_4)_3 IN ALUMINUM SULFATE/POLYMER DRILLING FLUID

作　　者：王立志[1] 

机构地区：[1]地质矿产部石油钻井研究所

出　　处：《油田化学》1995年第3期276-277,共2页Oilfield Chemistry

摘　　要：将硫酸铝－聚合物钻井液用水烯释，再用硫酸和双氧水将其中的有机质全部氧化分解，弃去滤渣，用置换滴定法测定滤液中的Ａｌ（３＋）。测定的相对误差为１．５２５％，故此法可用于现场分析。The sample of aluminum sulfate/polymer drilling fluid is treated by H2SO4 and H2O2 under boiling to oxidize and decompose the polymer and other organic substances existed.The Al￣(3+) in the filtrated reaction mixture in then determined by a displacement/titration technique:the Al￣(3+) ion in solution is let to form Al/FDTA complex(AlY-),which reacts with MH_4Cl and releases EDTA(H_2Y￣(2-)),and the later is readily titrated by a standard zinc salt solution.

关 键 词：硫酸铝 测定 钻井泥浆 高聚物钻井泥浆 

分 类 号：TE254.1[石油与天然气工程—油气井工程]