表活聚合物在天然岩心中动态滞留量实验研究  

Research on Dynamic Hold- up of Surface- Active Polymer in Natural Cores

作　　者：余晓玲[1] 姚峰[1] 吕红梅[1] 

机构地区：[1]中国石化江苏油田分公司,江苏扬州225009

出　　处：《精细石油化工进展》2016年第3期17-20,共4页Advances in Fine Petrochemicals

摘　　要：选用低、中、高3种渗透率的天然岩心,通过岩心流动实验和淀粉-碘化镉法分析法,研究了表活聚合物及普通聚合物在地层多孔介质中的动态滞留特征。实验结果表明,普通聚合物比大部分表活聚合物在岩心中的动态滞留量略高;各种表活聚合物在高渗透率岩心中的吸附规律相近,在低渗透率岩心中的吸附规律有明显差别,说明表活聚合物在微细和复杂孔隙中的吸附特征不同;岩心渗透率越低,达到吸附平衡(饱和吸附)越慢,最终的聚合物吸附量越高。The dynamic hold- up characteristics of surface- active polymers and common polymers in the porous media of formation were studied by means of core flow experiment and starch- cadmium iodide analytical method with the natural cores of low,medium and high permeability as the research objects. The experimental results have shown that the dynamic hold- up of a common polymer is slightly higher than that of most surface- active polymers in the core,the adsorption laws of various surface- active polymers are similar in the core of high permeability and differ greatly in the core of low permeability,indicating that the adsorption characteristics of surface- active polymers are different in fine and complex pores and that the lower the core permeability is,the longer the time it takes to reach adsorption equilibrium,and the higher the final adsorption of polymer is.

关 键 词：表活聚合物 动态吸附 天然岩心 渗透率 

分 类 号：TE357.46[石油与天然气工程—油气田开发工程]