摘要
将聚丙烯酰胺（PAM）与甲醛和亚硫酸氢钠在碱性溶液中反应，得到了聚丙烯酰胺磺甲基化产物聚合物（SPAM）。通过固井水泥浆的失水试验讨论了SPAM合成中3种原料的配比及pH值对水泥浆性能的影响，并与其它油井水泥降失水剂作比较。对它的结构进行了红外表征测定。测定结果表明：SPAM、HPAM、PAM3种物质在1620cm-1和1660cm-1处均有酰胺Ⅰ带和Ⅱ带的吸收峰；水解聚丙烯酞胺和SPAM在1560cm-1处有羧酸根的特征峰，可见丙烯酰胺磺甲基化制SPAM产品过程中有部分酰胺基水解生成羧酸根。SPAM在1200cm-1处有碘酸盐谱带，在1240cm-1处有伯醇R─CH2─O─吸收峰。故SPAM中含有─CONH2、─CONHCH2OH、─CONHCH2SO3Na和─COONa基因。
The sulfomethylated polyacrylamide (SPAM) was synthesized by reaction of polyacrylamide (PAM), formaldehyde and hydrosulfite of sodium in basic solution. The effects of molar ratio of three reacting materials and PH on properties of cement slurry are investigated by oil-well cement slurry filtration tests.SPAM are compared with other filtrate loss control additive. Their structure are verified by infrared spectroscopy, the result shows that SPAM, HPAM and PAM have absorption peak of amides at 1620cm-1 and 1660 cm-1 wave crest. Hydrolysis of PAM and SPAM, they have characteristic peak of carboxylic ion at 1560 cm-1wave crest. When using sulfomethylation acrylamide to make SPAM, part of amide group hydrolysis produces carboxylic ion. SPAM has sulfonate band at 1200cm-1 wave crest and has primary alcohol R-CH2-O-absorption peak at 1240cm-1 wave crest. SO SPAM includes-CONH2, -CONHCH2OH, -CONHCH2SO3Na and -COONa radicals.
出处
《钻采工艺》
CAS
1999年第3期78-80,共3页
Drilling & Production Technology
关键词
聚丙烯酰胺
改性
油井水泥
降失水剂
钻井泥浆
Polyarylamide (PAM), modify, sulfomethylation, oil well cement, fluid loss additive, laboratory testing
