聚驱大排量螺杆泵研制与应用

在大庆油田聚合物驱油技术工业化应用过程中，针对抽油机和电泵在举升含聚液体时暴露出的杆管偏磨、烧电机及螺杆泵排量范围小等问题，开发应用了适合于聚驱举升、实际排量在180m^3／d以上的地面驱动多线大排量螺杆录。通过对单线与多线2种设计方案进行对比，认为多线螺杆录在改善定子橡胶散热、提高泵的工作性能方面具有一定的技术优势，并得到了现场试验的对比验证。现场推广应用结果表明．多线大排量螺杆泵能够较好地满足大庆油田聚合物驱高产液井的举升需要，而且具有明显的降投资和节能效果。截至2005年7月底，大庆油田在用聚驱大排量螺杆泵井146口，平均免修期339d，取得了良好的现场应用效果。

Research and application of large discharge capacity screw pump in polymer flooding

During polymer flooding industrialized application process in Daqing Oilfield,aiming at problems of pumping unit and electric pump exposed in polymer bearing fluid lifting such as rod pipe eccentric wearing,electric machine burning and screw pump limited discharge capacity,a type of surface drive polyline large discharge capacity screw pump is developed and applied to meet the needs of polymer flooding lifting with a real discharge capacity over 180m~3/d.Comparison between monoline and polyline design schemes indicates that polyline screw pump has certain technical advantages in improving stator rubber heat elimination and improving pump performance,with correlated verification of field test results.Field popularization application result shows that polyline large discharge capacity screw pump can well meet the lifting needs in polymer flooding wells of high fluid production in Daqing Oilfield,with obvious cost effectiveness and energy economic effectiveness.By the end of July 2005,there are 146 wells using large discharge capacity screw pump in polymer flooding and average maintenance free period is 339d.A favorable field application effect has been achieved.