抗高温聚合物降滤失剂YL-Ⅱ的合成与性能  

Synthesis and Property of Anti-High Temperature Polymer Filtrate Reducer YL-Ⅱ

作　　者：何晨晨[1] 罗春芝[1] 

机构地区：[1]长江大学化学与环境工程学院,湖北荆州434023

出　　处：《化学与生物工程》2017年第7期43-46,共4页Chemistry & Bioengineering

摘　　要：选用丙烯酰胺(AM)、2-丙烯酰胺基-2-甲基丙磺酸(AMPS)、烷基丙烯酸(R-AA)和N-乙烯基吡咯烷酮(NVP)4种单体,采用非常规的引发剂和pH值调节方法,以改进的水溶液自由基聚合法合成了抗高温聚合物降滤失剂YL-Ⅱ。确定了最佳合成条件为:n(AM):n(R-AA):n(AMPS):n(NVP)=5∶1∶2∶2,反应温度20℃,反应体系pH值10~11,反应时间4h,引发剂用量为单体总质量的0.4%,用Na2CO3调节反应体系的pH值。YL-Ⅱ在淡水、饱和盐水及复合盐水钻井液中均有良好的降滤失性能,表现出较好的抗钙、抗盐性能;抗温温度达到220℃,且在240℃时仍有一定的降滤失性能;在钻井液体系中添加量较少,使用方便,能够降低使用成本。Using four kinds of monomers：acrylamide（AM）,2-acrylamide-2-methyl propane sulfonic acid（AMPS）,acrylic acid alkyl（R-AA）,and N-vinyl pyrrole alkyl ketone（NVP）,we synthesized anti-high temperature polymer filtrate reducer YL-Ⅱ by the aqueous solution radical polymerization with unconventional initiator and pH value adjustment method.The optimum synthesis conditions were as follows：n（AM）∶n（R-AA）∶n（AMPS）∶n（NVP）of 5∶1∶2∶2,reaction temperature of 20℃,pH value of reactiom system of 10~11,reaction time of 4h,initiator amount of 0.4% of total monomers mass,pH value adjustment by Na_2CO_3.YL-Ⅱpossessed good filtrate reduction property in freshwater drilling fluids,saturated brine drilling fluids,and compound brine drilling fluids,which showed better calcium resistance and salt resistance.The anti temperature of YL-Ⅱreached 220 ℃,even YL-Ⅱhad certain filtrate reduction property at 240 ℃.YL-Ⅱhad a little addition quantity in drilling fluid system,which had advantages of convenient operation and low cost.

关 键 词：聚合物 降滤失剂 抗高温 流变性 

分 类 号：TE254.4[石油与天然气工程—油气井工程]