非均质油藏中微球/聚合物非均相复合体系的调驱性能  

Performance of polymer microsphere-polymer composite system in heterogeneous reservoirs for profile control and flooding

作　　者：赖南君[1] 潘成巍 宋恒杰 李平[3] 陈明珠[3] Lai Nanjun;Pan Chengwei;Song Hengjie;Li Ping;Chen Mingzhu(College of Chemistry and Chemical Engineering,Southwest Petroleum University,Chengdu Sichuan 610500,China;China Bluestar Chengrand Co.,Ltd.,Chengdu Sichuan 610041,China;PetroChina Xinjiang Oilfield Development Corporation,Karamay Xinjiang 834000,China)

机构地区：[1]西南石油大学化学化工学院,四川成都610500 [2]中蓝晨光化工研究设计院有限公司,四川成都610041 [3]中国石油新疆油田分公司开发公司,新疆克拉玛依834000

出　　处：《石油化工》2022年第7期798-805,共8页Petrochemical Technology

摘　　要：将聚丙烯酰胺微球(PCB)与疏水缔合聚合物KYPAM-6S复配得到非均相复合体系。研究了复合体系中PCB与KYPAM-6S的最佳配比;在注入体积0.3 PV、注入质量浓度为3000 mg/L时,探究了复合体系相对单一体系在非均质油藏的调驱性能。实验结果表明,1500 mg/L PCB+1500 mg/L KYPAM-6S的复合体系在高剪切速率下稳定性好,且黏弹性最高,为最佳配比;相对于单独的PCB和KYPAM-6S,复合体系在非均质岩心中能够建立较强的渗流阻力,提高低渗岩心原油的动用程度,使低渗岩心提高采收率19.25%,说明PCB/KYPAM-6S复合体系在非均质油藏中的适用性更强。A heterogeneous composite system was obtained by compounding polyacrylamide microspheres(PCB)and hydrophobically associating polymer KYPAM-6S.The optimal ratio of PCB to KYPAM-6S was studied.When the injection volume of the composite system was 0.3 PV and the injection mass concentration was 3000 mg/L,the control and flooding performance of the composite system compared with the single system in heterogeneous oil reservoirs was explored.The experimental results show that the optimal composite system of 1500 mg/L PCB+1500 mg/L KYPAM-6S exhibited good stability under high shear rate conditions and highest viscoelasticity.Compared to single PCB or KYPAM-6S,the composite system could establish strong seepage resistance in heterogeneous cores,improve the production degree of crude oil in low-permeability cores,and increase the recovery rate of low-permeability cores by 19.25%,indicating that the PCB/KYPAM-6S composite system had better applicability in heterogeneous reservoirs.

关 键 词：非均质油藏 聚丙烯酰胺微球 疏水缔合聚合物 复合体系 复配比例 调驱性能 提高采收率 

分 类 号：TQ31[化学工程—高聚物工业]