大庆石油地质与开发2012，Vol.31Issue(5)：127-131,5.DOI:10.3969/J.ISSN.1000-3754.2012.05.026
聚合物驱原油富集聚并理论
OIL ENRICHED AND AGGREGATED THEORIES IN POLYMER FLOODING
摘要
Abstract
In order to deeply understand the mechanism of polymer flooding and optimize the parameters of the flooding, the kinetic mathematic model is established for the oil saturation changed with the time in the course of polymer flooding with the help of fractional flow theory. On the bases of the knowledges of the acting mechanism and migration laws between the crude oil and polymer solution, the existence of the crude oil enriched and aggregated process is exposed in theory for the front of polymer solution in the flooded reservoir, finally the oil bank is formed as result of gradual accumulation of the crude oil. According to the flowing properties of the polymer solution in the porous media, the influencing factors on the oil enrichment and aggregation are investigated and researched by the established model: the polymer mass concentration gradients in the front; the relation between the polymer viscosity and mass concentration; the polymer solution elasticity and the water relative permeability reduction caused by the polymer. The study results show that the polymer flooding with higher molecular weight and higher concentration has a big potential to enhance the oil recovery, thus the achievements stated above have provided sci-entific theoretical foundation for the choices of the relative molecular weight and injected mass concentration in the course of polymer flooding.关键词
聚合物驱油/分流理论/原油富集聚并/油墙/动力学数学模型Key words
polymer flooding/ fractional flow theory/ oil enrichment and aggregation/ oil bank/ kinetic mathemat-ical model分类
能源科技引用本文复制引用
陈国,邵振波,韩培慧..聚合物驱原油富集聚并理论[J].大庆石油地质与开发,2012,31(5):127-131,5.基金项目
国家科技重大专项“大型油气田和煤层气开发——大庆长垣特高含水油田提高采收率示范工程”(2011ZX05052). （2011ZX05052）
