实验用弹性微球体系粒径在10～60 μm范围内,采用反相(微)悬浮聚合技术,以油类为分散介质,单体溶液作为分散相,以小液滴状悬浮分散在油中,单体在小液滴内引发聚合,从而合成弹性微球.采用填砂管岩心流动实验,通过并列的两根岩心管模拟相对高渗透层与低渗透层,注入弹性微球溶液进行调剖,记录两根不同渗透率填砂管的分流量及并联两管的注入压力,探讨弹性微球体系调整油层分流能力；并调节微球浓度,探索不同浓度对调整分流量效果的影响.结果表明:弹性微球体系可以选择性封堵高渗透层,并能改善非均质地层的注水剖面；将高、低渗透率填砂管的分流量从高于80％∶20％的比例调整到两者都趋于50％,并且调剖后两管的渗透率级差最大幅度从8降到1.35,调整油层分流能力效果显著,后续注水时仍能维持较高的注入压力.随着微球浓度的增大,调剖平衡时间大幅度下降,提高了作业效率.%The elastic microspheres with diameter between 10 μm to 60 μm are used in the experiment.They were synthesized through reverse phase (micro) suspension polymerization technology,using oil as the dispersion medium,monomer solution as the dispersed phase suspended in the oil with droplet shape.Monomer was polymerized in the small droplets,then elastic microspheres system were synthesized.In order to know the reservoir diversion adjustment ability of elastic microspheres and the effects of different elastic microsphere concentration,core flow test was conducted.In this test,parallel core tubes are used to simulate the relatively high permeability layer and low permeability layer.Then the elastic microspheres solution were injected,recording the different diversions and the unitary inject pressure of the two parallel tubes.The results show that elastic microspheres have selectivity on permeability,plugging the high permeable layer first and can improve water injection profile of heterogeneous formation effectively by making the shunt rates of high and low permeability tubes from 80％ and 20％ tend to 50％ After profile control the maximum permeability ratio of the two tubes declined from 8 to 1.35,which indicated its reservoir diversion adjustment ability is remarkable.In the subsequent injection,the elastic microspheres still can maintain high injection pressure.With the concentration of PSPEMs increasing,time to accomplish profile control reduces substantially,which shows that using the proper microspheres concentration can improve the work efficiency
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