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Owing to poor temperature-tolerance, salt-resistance and anti-shearing of partially hydroyzed polyacrylamide(PHPA) in the reservoir with high temperature and high salinity, the copolymer of acryiamide-N-tetradecyl acrylamide2-acrylamino-2-methyl propane sulfuric acid(PFI) have been synthesized by micellar polymerization method,and the solubility and property of temperature-tolerance and salt-resistance have greatly Been improved. The effect of the polymerization temperature on molecular,the effect of the concentration of hydrophobic monomer and polar monomer on the apparent viscosity of the copolymer in different complex brine have been investigated. The property of anti-shearing of the copolymer has been evaluated. Result show that PFI has good viscosifying actron and property of anti-shearing in different complex brine when the content of the hydrophobic monomer and polar monomer are 0.5% and 6%,respectively,initiation temperature is 11℃,which could meet the needs of polymer flooding in the reservoir with different temperature and salinity formation. 相似文献
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以丙烯酸（AA）、丙烯酰胺（AM）、（1–二甲氨基–烯丙基）– 膦酸（DMAAPA）及N –烯丙基辛酰亚
胺（NAOI）为原料、亚硫酸氢钠–过硫酸铵为引发剂制备了一种水溶性四元共聚物AA/AM/DMAAPA/NAOI。
单因素实验确立了该共聚物的最佳合成条件：反应温度为45 ?C,引发剂加量为0.3%,pH 为7,
m（AM）：m（AA）：m（DMAAPA）：m（DMAAPA）= 6.000：4.000：0.015：0.030;通过红外光谱（IR）、核磁共振氢谱（1H
NMR）对该共聚物驱油剂的分子结构进行了表征,证明功能单体均已共聚在分子链上;2 000 mg/L 的该共聚物溶液在
120 ?C时的黏度保留率为28.9%,在1 000 s−1 时黏度保留率为18.7%,当NaCl 加量为1.2 g/L 时黏度保留率为22.2%;
室内模拟驱油实验结果表明,在65 ?C 下2 000 mg/L 的该共聚物溶液相对于水驱可提高采收率达到10.54%。 相似文献
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