摘要
通过平板模型物模试验研究了聚合物驱后地下聚合物的再利用技术 ,从而得到聚合物驱后对地下聚合物溶液固定技术和絮凝技术效果的认识。研究表明 ,聚合物固定剂溶液对高质量浓度、高相对分子质量的HPAM的固定效果好 ,可用于对聚合物驱后未恢复水驱油藏的聚合物的固定 ;聚合物絮凝剂与低质量浓度HPAM发生絮凝 ,产生的絮凝体具有良好的封堵水驱后形成的大孔道的作用。物理模拟试验研究说明 ,聚合物驱后的聚合物固定剂技术 ,可以大大提高聚合物驱后水驱的波及系数 ,进而提高聚合物驱后的原油采收率 ;在此基础上再注入深部调剖剂 ,还能进一步提高原油采收率。聚合物驱后若地层中聚合物溶液部分被注入水稀释 。
In-site polymer reutilized techniques after polymer flooding are studied through a plate model physical simulation, thus understanding the effects of polymer solution flocculation and fixation techniques after its flooding are established. The study shows that the effect of fixed agent on the fixation of HPAM with high mass concentration and high relative molecular mass is well, which can be used for polymer fixation in nonrestored water flooding reservoir after polymer flooding, the polymer flocculant reacts with low mass concentration HPAM, in which the flocculation created is effective for blocking the big pore path caused after water flooding. Physical simulation test indicates that the sweep efficient after polymer flooding can be improved greatly by using the technique of polymer fixed agent to enhance the crude oil recovery. On the basis stated above, the crude oil recovery is further improved by injecting the in-depth profile control agent, if the polymer solution is partially diluted by injected water in the formation after polymer flooding the reutilized technique could be used to enhance the crude oil recovery greatly.
出处
《江汉石油学院学报》
EI
CSCD
北大核心
2004年第2期114-117,共4页
Journal of Jianghan Petroleum Institute
基金
国家重点基础研究专项资助项目 (G19990 2 2 5 0 9)
关键词
聚合物驱油
再利用技术
絮凝剂
固定剂
残余阻力系数
polymer flooding
reutilized technique
flocculant
fixed agent
residual drag coefficient
