摘要
针对弱凝胶体系在高温高矿化度油藏调驱效果差的问题,研制了一种耐温耐盐的聚合物纳米微球HP-2体系,利用激光粒度分析仪和光学显微镜评价了HP-2的微观形貌和粒径分布,并以膨胀倍数为评价指标研究了HP-2的吸水膨胀曲线,分别利用均质岩心和非均质岩心评价了聚合物纳米微球HP-2的封堵、耐冲刷以及调驱性能。结果表明,平均粒径为407.2nm的聚合物纳米微球HP-2为圆球度很高的球形颗粒,在高温(90℃)高矿化度(97 686mg/L)油藏的吸水膨胀倍数为34.1g/g。三层非均质岩心调驱实验结果表明,聚合物纳米微球HP-2体系可在水驱采收率基础上提高采收率幅度达17.3%。该聚合物纳米微球HP-2体系在高温高矿化度油藏应用前景广阔。
Aiming at the problem that the weak gel system has poor effect on the high temperature and high salinity reservoirs,a kind of polymer nanosphere HP-2 system with temperature resistance and salt tolerance was developed.The particle size distribution and morphology of HP-2 were evaluated by laser particle size analyzer and optical microscope.The water absorption expansion curve of HP-2 was studied by using swelling ratio as the evaluation index.Finally the plugging,anti erosion and profile control performance of polymer nanosphere HP-2 were evaluated using homogeneous cores and heterogeneous cores.The results showed that the polymer nanosphere HP-2 with an average particle size of 407.2 nm were spherical particles with high sphericity.The water swelling ratio of HP-2 was 34.1 g/g in the high temperature（90 ℃）and high salinity（97 686 mg/L）reservoir.The results of three layers heterogeneous core flooding experiments show that the polymer nanosphere HP-2 system can enhance the oil recovery rate by 17.3% on the basis of water flooding recovery.The polymer nanosphere HP-2 system has wide application prospects in high temperature and high salinity reservoirs.
作者
鞠野
徐国瑞
铁磊磊
贾永康
杨劲舟
Ju Ye,Xu Guorui,Tie Leilei,Jia Yongkang,Yang Jinzhou(Tianjin Branch Company,China Oilfield Services Limited,Tianjin 300452, China)
出处
《辽宁石油化工大学学报》
CAS
2018年第4期31-35,共5页
Journal of Liaoning Petrochemical University
关键词
聚合物纳米微球
膨胀倍数
阻力系数
残余阻力系数
Polymer nanosphere
Swelling ratio
Resistance coefficient
Residual resistance coefficient
