中文摘要：

采用反相乳液聚合法制备了JYC-1聚合物微球乳液,筛分为毫米级、微米级和纳米级,测定了纳米级微球乳液的粒径和表观黏度随养护时间变化规律,通过室内物理模拟实验评价了其在高含水非均质油藏模型中的调驱效果。实验结果表明：在模拟油藏温度（70℃）下JYC-1聚合物微球水化膨胀粒径逐渐增大,70℃恒温养护60 d后,JYC-1聚合物微球的PDI值为0.274,平均粒径超过了410.8 nm,此时微球乳液体系的分散性最好,膨胀作用趋于稳定;JYC-1微球乳液体系的表观黏度变化不大,养护60 d后最大表观黏度为2.4 mPa.s;JYC-1聚合物微球乳液的适宜注入浓度为2000 mg/L,适宜注入段塞为0.2 PV毫米级＋0.2 PV纳米级,在渗透率级差大于3的非均质油藏模型中调驱后,可有效扩大低渗透率岩心的波及体积,明显提高低渗透率岩心的采收率。

英文摘要：

The polymer microsphere emulsion JYC-1 was synthesized by inversed emulsion polymerization,and the microspheres with different particle size of millimeter,micrometer and nanometer was obtained by screening,the variation of the particle size and the apparent viscosity of JYC-1 with maintenance time was studied and the physical simulation experiments of JYC-1 emulsion was conducted.The experiments results showed that,at the simulated reservoir temperature of 75 ℃,the size of JYC-1 microspheres in the water increased gradually,when keeping to be heated by water at 70℃ for 60 days,the PDI of the microsphere emulsion was 0.274,and the average particle size of the JYC-1 microspheres was higher than 410.8 nm,meanwhile,the dispersivity of the microsphere system was good and the expansion tended to remain stable.In addition,the apparent viscosity of the microsphere emulsions did not change significantly,the maximum apparent viscosity was 2.4 mPa·s after maintained at 70℃ for 60 days.The physical simulation experiments showed that the appropriate injection concentration of JYC-1 microsphere was 2000 mg/L,the suitable slugging was 0.2 PV ×2000 mg/L ＂millimeters grade＂ ＋ 0.2 PV×2000 mg/L ＂nanometer grade＂.After the system was injected into the two groups of parallel core with the permeability level difference≥3,the swept volume of the low permeability core was expanded and the oil recovery of the low permeability core was enhanced obviously.