聚驱注入过程中储层参数变化规律研究  

Law of Reservoir Parameters Change in the Process of Polymer Injection

作　　者：郭志强[1] 李佩敬[2] 徐伟生[1] 陈瑜芳[1] 

机构地区：[1]大港油田采油工艺研究院 [2]大港油田勘探开发研究院,天津300280

出　　处：《内蒙古石油化工》2014年第12期151-153,共3页Inner Mongolia Petrochemical Industry

摘　　要：聚合物溶液的注入不可避免的影响油藏物性参数,进而直接影响聚合物驱油的整体效果,因此本文针对大港油田港西A区开展了聚驱过程中储层渗透率、孔隙度的变化规律研究并提出了一种适合于储层物性参数变化的驱替方法。实验结果表明:聚合物的注入使近井地带渗透率大幅度降低,同时导致层内和层间非均质加剧,影响采油效果;粘度连续降低的变粘度驱油体系能够适应这种储层变化情况,并且大幅度动用中低渗透层剩余油,比单一粘度聚驱提高采收率3.85个百分点。Injection of polymer solution affects reservoir parameters inevitably,which directly affects the overall effect of polymer flooding.Therefore this paper carries out the research on laws of reservoir permeability and porosity in A region of Dagang oilfield and the displacement method which fits law of reservoir parameters change was put forward.Experimental results show that injection of polymer solution reduces the permeability near wellbore greatly,resulting in the heterogeneity of layer and interlayer increasing at the same time,which affects the effect of production.Variable viscosity oil displacement system can adapt the law of reservoir and develop the residual oil of low permeability greatly.It can increase the recovery of oil 3.85%than polymer flooding in single viscosity.

关 键 词：聚合物驱 渗透率 变粘度 提高采收率 

分 类 号：TE357.46[石油与天然气工程—油气田开发工程]