疏水缔合AM/C_(10)AM/AMPS三元共聚物的合成与盐水溶液粘度性能

Synthesis and Aqueous Solution Viscosity of Hydrophobically Associating AM/C_(10)AM/AMPS Tercopolymer for EOR

采用胶束氧化还原聚合方法合成了AM/C10AM/AMPS三元疏水缔合共聚物。简介了合成过程,给出了主要的合成参数。保持其他合成条件不变,分别改变疏水单体N 癸基丙烯酰胺C10AM和阴离子单体2 丙烯胺基 2 甲基丙磺酸AMPS在单体总量中的摩尔百分数(0～1.5%和15%～40%),得到了16个共聚物,在45℃、3.67和7.34s-1下测定了用矿化度4000mg/L的模拟大庆盐水配制的1000mg/L共聚物溶液的粘度,讨论了引起粘度变化的原因。有7个样品的粘度能满足大庆油田聚合物驱油的要求(7.34s-1下的粘度大于40mPa·s),其中由1.2%C10AM、35%AMPS及AM合成的共聚物样品粘度最高(61.5mPa·s)。对共聚温度等合成条件的影响作了一般性的讨论。表1参6。

Hydrophobically associating AM/C10AM/AMPS tercopolymers are synthesized through micellar redox polymerization. The procedure of synthesis is presented concisely with main reaction variables given. 16 copolymers are obtained by varying the molar fraction in monomer mixture of hydrophobic Ndecylacrylamide, C10AM, (0-0.012) or of anionic 2acrylamido2methylpropane sulfonic acid, AMPS, (0.15-0.40) with other reaction variable being constant and the viscosity of 1 000 mg/L copolymer solution in simulation Daqing brine of TSD=4 000 mg/L is determined at 45℃ and shear rate 3.67 and 7.34 s-1. The changes in solution viscosity are reasoned. 7 copolymers can meet the requirement to polymers for EOR in Daqing in that the solution viscosity at 45℃ and 7.34 s-1 is higher than 40 mPa·s and the copolymer of the highest solution viscosity, 61.5 mPa·s, consists of 1.0% C10AM and 35% AMPS. The effects of copolymerization temperature and other reaction variables are discussed in general.