摘要
疏松砂岩油藏在注聚过程中,可能会由于防砂完井方式的选择不合理而导致聚合物溶液粘度大幅度下降,从而影响聚合物驱效果。通过测定聚合物溶液流过不同类型防砂筛管后的粘度保留率,分析了完井方式对聚合物溶液粘度的影响。结果显示,无论采用何种筛管进行防砂,聚合物溶液通过筛管后粘度均有所下降;在较高的注入速度下,聚合物通过筛管时粘度下降幅度较大;通过金属网筛管时的粘度损失比绕丝筛管高,且易产生堵塞现象。因此,选择绕丝筛管作为聚合物驱油田注聚井的防砂方法较为合适。
During the polymer flooding in unconsolidated sandstone reservoirs,reduction of polymer solution viscosity might be caused because of unreasonable selection of sand control completion method,and consequently polymer flooding effect would be affected.By measuring the viscosity retention ratio after polymer solution flowing through different sand screens,the influence of well completion method on polymer solution viscosity was analyzed.The results show that regardless of screen used for sand control,viscosity reduces after the polymer going through the screen.For higher injection velocity viscosity reduces greatly after it going through the screen,the viscosity loss is higher in metal screen than that of wire wrapped screen,and blocking is easy to be induced.Therefore it is proper to use the wire wrapped screen for sand control completion in oilfields using polymer flooding.
出处
《石油天然气学报》
CAS
CSCD
北大核心
2007年第4期108-110,共3页
Journal of Oil and Gas Technology
基金
中国海洋石油总公司研究项目(CNOOCRC(LTD)2006-KFGC-SZ361005)
关键词
完井方式
聚合物
粘度
防砂筛管
completion method
polymer
viscosity
sand control screen
