西南石油大学学报（自然科学版）Issue(3)：129-137,9.DOI:10.11885/j.issn.16745086.2014.12.22.02
非均质储层纳微米聚合物颗粒体系驱油实验研究
Experimental Study on Oil Displacement of Aqueous Dispersion System of Nano/Micron-sized Polymer Particles in Heterogeneous Reservoir
摘要
Abstract
In order to reveal deeply the effects of heterogeneity to oil displacement effect of aqueous dispersion system of nano/micron-sized polymer particles in low permeability reservoir,heterogeneous oil displacement experiments of nano/micron-sized polymer particle were conducted by plane sandpack model and cores series and parallel combination experiment tech-nology. The influences of vertical heterogeneity,lateral heterogeneity and permeability ratio on oil displacement effect were analyzed. The experimental results of plane sandpack models show aqueous dispersion system of nano/micron-sized polymer particles reduces vertical heterogeneity of low permeability reservoir more effectively,with 9.83%higher recovery rate than in the lateral heterogeneous models. The experimental results of core combination models show the recovery rates improved by the aqueous dispersion system of nano/micron-sized polymer particles in cores series and parallel combination models increase gradually with increasing permeability ratio,which have a growth of 6.65%in the core is series ones and a growth of 9.48%in the parallel combination ones. The bigger the permeability ratio is,the greater the difference of fluid productions in low and high permeability cores is. After the aqueous dispersion system of nano/micron-sized polymer particles injected into cores,the fluid productions reduce gradually in high permeability cores and increase by degrees in low permeability cores.关键词
非均质储层/纳微米聚合物颗粒/驱油效果/渗透率级差/分流能力Key words
heterogeneous reservoir/nano/micron-sized polymer particle/oil displacement effect/permeability ratio/diver-sion adjustment ability分类
能源科技引用本文复制引用
龙运前,朱维耀,黄小荷,吴俊杰,宋付权..非均质储层纳微米聚合物颗粒体系驱油实验研究[J].西南石油大学学报（自然科学版）,2015,(3):129-137,9.基金项目
国家自然科学基金（50934003，11472246）；国家重点基础研究发展计划（2013CB228002）。 （）
