两性疏水缔合聚丙烯酰胺(AHAPAM)溶液孔隙介质流动行为研究  

The Flowing Action of Amphoteric Hydrophobic Associating Polyacrylamide(AHAPAM) Solutions in Porous Media

作　　者：张鑫[1] 路遥[1] 程伟[1,2] 黄晓义[1,2] 

机构地区：[1]中国科学院理化技术研究所,北京100190 [2]中国科学院研究生院,北京100049

出　　处：《油田化学》2011年第1期32-36,共5页Oilfield Chemistry

基　　金：国家863计划"高含水油田透油性堵水新技术"(项目编号2006AA09Z318)

摘　　要：研究了AHAPAM溶液孔隙介质内流动过程的宏观与微观运移,及其在该过程中的聚集态变化和孔隙内溶液分布及变化特征;对流动过程中影响溶液黏弹性的因素进行分类和讨论。压力变化趋势表明,AHAPAM溶液孔隙介质传播分阶段进行,有效黏度前锋流速远低于体积流速;孔隙内溶液的波及效率和深度大于传统PAM溶液,且在剪切变稀区仍可提高波及效率。孔隙流动前后的溶液性质研究表明,入口效应、吸附和剪切作用是溶液黏度降低的主要原因,其中吸附逐渐达到饱和,剪切和入口效应稳定存在。孔隙内聚合物分布研究表明,溶液在孔隙介质中的微观运移不受压力影响,虽然速度缓慢,但可进一步提高波及能力。Transports of AHAPAM solutions in porous media were studied in both macro and micro scales.Data of pressure indicated that there were several steps for AHAPAM solutions transporting in porous media.The flow rate of viscoelastic edge was much slower than that of volume.Sweeping efficiency of AHAPAM under flow rate within shear-thinning region and in large porosity was much better than that of HPAM solutions.The contrast of UV abs and viscoelasticity between solutions before and after porous flowing indicated that entrance effect,adsorption and shearing action were mainly causes for viscosity reduction of AHAPAM solutions.The adsorption gradually reached saturation while entrance effect and shearing action stably existed in whole process of flow.Distribution of AHAPAM solution in porous media after reaching pressure balance showed that the sweeping efficiency of micro-transport was not affected by pressure but dominated by concentration gradient.

关 键 词：两性疏水缔合聚丙烯酰胺 孔隙介质 入口效应 孔隙吸附 微观运移 

分 类 号：TE39[石油与天然气工程—油气田开发工程]