摘要
针对海上油田应用的常规电潜泵存在高效区范围有限、大排量扬程偏低等问题,开展了宽幅电潜泵叶导轮设计。应用CFTurbo建立宽幅叶导轮模型,通过优化叶片包角和叶片厚度,减少水力损失,提高泵效。利用Ansys软件探究叶导轮内部压力场和速度场分布规律,并应用3D打印样件和铸造样件进行性能试验,在额定工况点效率分别达到62.87%和65.83%,数值模拟结果与二者误差分别为6.1%和1.3%,随排量变化趋势一致,验证了数值模拟结果具有一定准确性。采用数值模拟和3D打印样件复合验证方法费用低,周期短,适合进行多轮次叶导轮优化设计,缩短了最终方案设计周期,并提供了试验参数。最终设计的宽幅电潜泵单级叶导轮高效区相比于常规电潜泵拓宽15.7%,额定点效率提高10.21%,满足海上油田生产井提液稳产需求。
In view of the problems of conventional electric submersible pumps for offshore applications,such as limited high-efficiency area and low head of large displacement,impeller and diffuser in wide range electric submersible pump design was developed.A CFTurbo analysis model for wide range impeller and diffuser was established,by optimizing blade wrap angle and vane thickness to reduce hydraulic loss and improve the pump efficiency.Ansys software was used to explore the pressure and velocity distribution in impeller and diffuser,a 3D printing sample and casting sample were applied for performance test.The results show that in certified capacity the efficiency is 62.87%and 65.83%,the numerical simulation results show the error between two test is 6.1%and 1.3%,and the trend of the three methods is consistent with the displacement change.It is verified that the numerical simulation results have a certain accuracy.The composite verification method using numerical simulation and 3D printing samples has low cost and short cycle,and it is suitable for multi-round optimization design,which shortens the design cycle for the final plan and provides test parameters.The high efficiency zone of final design was broadened by 15.7%than conventional ESP,rated point efficiency was improved by 10.21%,it can meet the requirement of liquid extraction for production wells in offshore oil fields.
作者
李越
白健华
蒋召平
于法浩
尚宝兵
LI Yue;BAI Jianhua;JIANG Zhaoping;YU Fahao;SHANG Baobing(Tianjin Branch,CNOOC(China)Co.,Ltd.,Tianjin 300459,China)
出处
《石油矿场机械》
2020年第6期66-73,共8页
Oil Field Equipment
基金
国家科技重大专项项目“渤海油田高效采油工程及配套技术示范”(2016ZX05058-003-019)。
关键词
电潜泵
宽幅电潜泵叶导轮
数值模拟
三维流场分析
3D打印样件测试
electric submersible pumps
wide range ESP impeller and diffuser
numerical simulation
three-dimension flow field analysis
3D printing sample test
