中低相对分子质量抗盐聚合物的分子聚集及溶液特性

Molecular aggregation and solution property of low molecular weight polymer

为满足大庆油田二、三类油层开发的实际需求,研究中低相对分子质量抗盐聚合物分子间的相互作用、分子聚集和溶液特性,评价分子聚集对现场应用条件的适应性.通过与溶液渗流特性、驱油效果的对比,探讨了中低分抗盐聚合物的驱油机理,指出抗盐聚合物聚集体的滞留能力强、变形能力差,其调剖能力与黏度不成比例,以及分子聚集体的尺寸和变形能力对驱油效果有较大影响,为现场应用中低分抗盐聚合物和指导中低分抗盐聚合物改性提供了依据.

In order to meet requirement of Daqing Oilfield in the second and the third reservoir development,the interaction between high molecular weight polymers was studied,so were the molecular aggregation and solution properties.The experimental results showed that the application of molecular aggregation conditions was evaluated in the pilot test.Compared to oil displacement effect and properties,the flooding mechanism of low molecular weight polymer was proposed.Evaluation principles of low molecular weight polymer were put forward.Application of low molecular weight was guided and it provided a basis for polymer modifying.