游梁抽油机井井下油水分离器设计及仿真分析  

Design and Simulation of Downhole Oil-water Separation System(DOWSS) for Double-flow Pump in Beam Pump Unit

作　　者：董祥伟[1] 张立军[1] 李增亮[1] 张辛[1] 刘延鑫[1] 李风涛 DONG Xiangwei;ZHANG Lijun;LI Zengliang;ZAHNG Xin;LIU Yanxin;LI Fengtao(China University of Petroleum,Qingdao 266580,China;Research Institute of Petroleum Engineering,PetroChina Dagang Oilfeild Company,Tianjin 300270,China)

机构地区：[1]中国石油大学(华东),山东青岛266580 [2]中国石油大港油田石油工程研究院,天津300270

出　　处：《石油矿场机械》2020年第1期20-26,共7页Oil Field Equipment

基　　金：国家高技术研究发展计划项目(2006AA06Z224);中央高校基本科研业务费专项资金资助项目(13CX06077A)

摘　　要：针对游梁式抽油机井间隙供液的特点,设计了适用于139.7 mm(5 1/2英寸)套管的井下油水分离器,与游梁式抽油机配套使用,在井下完成油水分离、原油举升和采出水回注工艺。根据游梁抽油机的机构运动规律,推导得出了井下水力旋流器的入口流量波动曲线。将该曲线转换为流体仿真模型的瞬态入口边界条件,数值模拟得出了井下旋流器的三维瞬态流场分布,得到了底流含油浓度波动规律。According to the characteristics of the discontinuous flow of the beam pumping unit,a down-hole oil-water separator suitable for 139.7 mm(5 1/2 inch)casing was designed,which could be used together with the beam pumping unit to complete oil-water separation,crude oil production and water injection process.According to the mechanism of the movement of the beam pumping unit,the inlet flow fluctuation curve of the down-hole hydro-cyclone was derived.The curve was transformed into the transient inlet boundary condition of the CFD simulation model.The three-dimensional transient flow field distribution of the down-hole cyclone was obtained by numerical simulation and the fluctuation law of the oil concentration of the underflow was obtained.

关 键 词：游梁式抽油机 井下油水分离器 设计 分析 

分 类 号：TE931[石油与天然气工程—石油机械设备]