交联聚合物溶液的剪切稳定性  

Study on the shear stability of linked polymer solution

作　　者：崔晓红[1,2] 辛见[3] 李明远[3] 林梅钦[3] 

机构地区：[1]中国石油大学(华东)石油工程学院,山东东营257061 [2]中国石化股份胜利油田分公司地质科学研究院,山东东营257015 [3]中国石油大学(北京)提高采收率研究中心,北京102249

出　　处：《油气地质与采收率》2008年第3期76-78,共3页Petroleum Geology and Recovery Efficiency

摘　　要：采用核孔膜过滤和动态光散射法,研究了高相对分子质量低浓度的部分水解聚丙烯酰胺与柠檬酸铝反应所形成的交联聚合物溶液的剪切稳定性及降解机理。结果表明,随着剪切速率的增加,交联聚合物溶液对孔径为1.2μm的核孔膜的封堵能力降低,但仍能对孔径为0.4μm的核孔膜形成有效封堵。交联聚合物溶液受剪切作用后封堵性能下降的原因是体系中的交联聚合物线团粒径和部分水解聚丙烯酰胺分子线团粒径受剪切作用后变小,不能对核孔膜形成有效封堵。The shear stability and degradation mechanism of linked polymer solution (LPS) formed by the reaction of low concentration and high molecular weight partially hydrolyzed polyacrylamide ( HPAM) and aluminum citrate ( ALCit) were investigated by nuclear pore membrane and dynamic light scattering. The results indicate that the plugging efficiency of LPS in 1. 2m nuclear pore membrane will decrease while the shear rate becomes faster,but the degraded LPS has efficient plugging in 0. 4m nuclear pore membrane. The reason of plugging efficiency decrease of LPS af-ter shear is that the size of linked polymer coil (LPC ) and high molecular weight HPAM coils become smaller,and it can not form effective plugging to nuclear pore membrane.

关 键 词：部分水解聚丙烯酰胺 柠檬酸铝 交联聚合物溶液 交联聚合物线团 剪切稳定性 降解 

分 类 号：TE357.431[石油与天然气工程—油气田开发工程]