抗盐聚合物在非均质地层中调驱效果评价  

Evaluation of middle note flooding effect of salt resistant polymer in heterogeneous formation

作　　者：宋智勇 王克亮[1] SONG Zhi-yong;WANG Ke-liang(Northeast Petroleum University,Daqing 163318,China)

机构地区：[1]东北石油大学,黑龙江大庆163318

出　　处：《化学工程师》2023年第5期58-62,共5页Chemical Engineer

摘　　要：本文通过测量高矿化度下HPAM和KY聚合物的黏度以及双管并联岩芯驱油实验,研究了聚合物的增黏性及聚合物与岩芯渗透率级差的匹配情况,探讨了聚合物的增黏机理以及聚合物在不同岩芯渗透率级差下对高、低渗透率层及整体采收率的影响。实验结果表明,KY聚合物在相同浓度下相较于HPAM表现出更好的增黏性;渗透率级差为2时,HPAM低渗动用效果好,驱油效果优于KY聚合物;渗透率级差为3和4时,KY聚合物低渗动用效果好,驱油效果优于HPAM。渗透率极差越大,更加显示出KY聚合物的优越性。By measuring the viscosity of HPAM and KY polymers under high salinity and core displacement experiment with two parallel pipes,this paper studies the viscosity increase of polymer and the matching of permeability differential between polymer and core,discusses the viscosity increase mechanism of polymer and the impact of polymer on high and low permeability layers and overall recovery under different core permeability differential.The experimental results showed that KY polymer exhibited better viscosity enhancement than HPAM at the same concentration;When the permeability difference is 2,HPAM has a good low permeability producing effect and better oil displacement effect than KY polymer.When the permeability difference is 3 and 4,KY polymer has good low permeability production effect,and the oil displacement effect is better than HPAM.The greater the permeability difference,the more advantages of KY polymer are shown.

关 键 词：抗盐聚合物 聚合物驱 非均质储层 渗透率级差 采收率 

分 类 号：TE357[石油与天然气工程—油气田开发工程]