摘要
针对常规油基聚合物微球调驱体系在渤海油田部分区块注入性不佳等问题,采用分散聚合法,将丙烯酰胺、甲基丙烯酰氧乙基三甲基氯化铵和丙烯酸在引发剂作用下聚合,制备了三元共聚水基聚合物微球。性能评价结果表明:三元共聚水基聚合物微球粒径分布均匀,中值粒径619 nm,具备良好的分散性、注入性和封堵性。在渗透率1 000×10^(-3)µm^(2)条件下3 000 mg/L微球溶液阻力系数为2.14,残余阻力系数不22.6;可有效封堵储层深部喉道,使得喉道半径降低46.9%;3 000 mg/L三元共聚水基聚合物微球体系在渗透率为2 000×10^(-3)µm^(2)时,最终采收率为82.1%,优于渗透率为3 000×10^(-3)µm^(2)时的采收率76.0%。
In response to the problems of poor injectability in some blocks of conventional oil-based polymer microsphere displacement control systems,ternary copolymerized water-based polymer microspheres were prepared by water dispersion polymerization and their performance was evaluated.The results showed that the particle size distribution of the ternary copolymerized water-based polymer microspheres was uniform,with a median particle size of 619 nm,and had good dispersibility,injectability,and plugging properties.Under the condition of a permeability of 1000×10^(-3)μm^(2),the resistance coefficient of the 3.0 mg/g microsphere solution was 2.14,and the residual resistance coefficient was 22.6.It can effectively plug the deep throat of the reservoir,reducing the throat radius by 46.9%.The final recovery rate of the 3.0 mg/g ternary copolymerized water-based polymer microsphere system is 82.1%at a permeability of 2000×10^(-3)μm^(2),which is better than the recovery rate of 76.0%at a permeability of 3000×10^(-3)μm^(2).
作者
郐婧文
刘丰钢
李翔
鞠野
徐国瑞
王浩颐
Kuai Jingwen;Liu Fenggang;Li Xiang;Ju Ye;Xu Guorui;Wang Haoyi(China Oilfield Services Limited,Tianjin 300459,China;State Key Laboratory of Efficient Offshore Oil Development,Beijing 102209,China;Tianjin Key Laboratory of Offshore Oil Hard-to-Produce Reserves Exploitation Enterprise,Tianjin 300459,China)
出处
《精细石油化工》
2026年第1期64-67,共4页
Speciality Petrochemicals
基金
中国海洋石油集团有限公司资助项目(YXKY-SXSH-2019-TJ-01)
中国海洋石油集团有限公司资助项目(YSB21YF001)
中国海洋石油集团有限公司资助项目(YSB24YF009)。
关键词
聚合物微球
注入性
调驱
封堵性
采收率
丙烯酰胺
分散聚合
polymer microsphere
injectivity
regulating and flooding
plugging ability
recovery efficiency
