聚合物吸附滞留规律及性能变化研究

建立了密闭取芯井岩芯中微量聚合物的分离及浓度、相对分子质量和水解度的测试方法；利用建立的方法研究了地层中残留聚合物的性能变化，分析了聚合物在聚驱后油层中平面、层内及层间的吸附滞留规律，研究了聚合物吸附滞留量与剩余油饱和度的关系；并利用红外光谱、扫描电镜等方法研究了地层中残留聚合物的结构和形态变化。研究发现：聚驱后聚合物的性能发生了较大变化，水解度增加约50％左右，相对分子质量约为原始聚丙烯酰胺的1／10，其主要成分仍为聚丙烯酰胺，主要以絮状集聚的形式存在于地层中；聚驱后聚合物在平面上普遍存在吸附滞留，且剩余油富集的地方吸附滞留量较低。

Study of Polymer's Adsorption and Retention Law and Performance Change

Establish the test method of the separation and concentration,molecular weight and degree of hydrolysis of micro-polymer in core of sealing core well,studied the performance alternation of residual polymer in formation,and analyzed the law of adsorption and retention of polymer in flat,intra-formation and interlamination of oil layer after polymer flooding,and studied the relation of polymer's adsorption-retention amount and remaining oil saturation,as well as the structure and form of the residual polymer ...