岩心渗透率对聚丙烯酰胺溶液流变性的影响  

Effect of core permeability on rheology of polyacrylamide solution

作　　者：彭昱强[1,2] 何顺利[1,2] 郁鲁彬[3] 

机构地区：[1]石油工程教育部重点实验室中国石油大学,北京102249 [2]气体能源开发技术教育部工程研究中心中国石油大学,北京102249 [3]中海油田服务股份有限公司,北京101149

出　　处：《特种油气藏》2010年第5期93-95,共3页Special Oil & Gas Reservoirs

基　　金：中海油田服务股份有限公司科技攻关项目"渤海稠油油田聚合物驱相关技术研究"(JSKF2008YJ06)

摘　　要：使用露头岩心研究部分水解聚丙烯酰胺溶液通过岩心后,在不同时间的产出液黏度变化及聚合物溶液通过岩心时的压差。研究结果表明,随着时间的延长,聚合物通过岩心后的液体黏度逐渐增大,并最终趋于稳定。低渗岩心的阻力远远大于高渗岩心,且岩心渗透率稍有下降,压差快速增加。设计聚合物驱方案时,应考虑岩心中聚合物溶液有效黏度的渐变规律,且要谨慎确定聚合物驱油藏渗透率下限。Outcrop core samples are used to study the viscosity of produced fluid at different times after partially hydrolyzed polyacrylamide solution flowing through the cores and the differential pressure when polymer solution flowing through. The result shows that the viscosity of produced fluid increases gradually with time and finally becomes stabilized. The resistance in low permeability core is much higher than in high permeability core,and the differential pressure increases rapidly when the permeability of core decreases slightly. The design of polymer flooding shall take into account the variation of polymer solution viscosity. At the same time,cautions shall be taken when reservoir permeability limit is chosen for polymer flooding.

关 键 词：水解聚丙烯酰胺 聚合物驱 产出液黏度 渗透率 流变性 露头岩心 

分 类 号：TE622.2[石油与天然气工程—油气加工工程]