地面驱动螺杆泵井筒中流体流动规律研究  

Research on the law of the fluid flow in the ground-driven screw-pump borehole

作　　者：王小兵[1,2] 刘扬[1] 崔海清[1] 韩洪升[1] 

机构地区：[1]大庆石油学院提高油气采收率教育部重点实验室,黑龙江省大庆市163318 [2]扬州工业职业技术学院机械工程系

出　　处：《石油机械》2010年第1期8-10,93,共3页China Petroleum Machinery

基　　金：国家自然科学基金项目“粘弹性流体在内管做轴向往复运动的偏心环空中的非定常流”(50674019);中国石油化工集团公司重点科技项目“三维井眼抽油杆系统力学分析与检测研究”(P04059)

摘　　要：利用PIV测试地面驱动螺杆泵井筒偏心环空中流体的流场,研究了流体轴向速度的分布规律以及流量、抽油杆转速与流体压力梯度的关系。结果表明,地面驱动螺杆泵井筒中,宽间隙处流场容易产生紊流;流体轴向速度呈M形分布,不是典型的凸抛物线形,而是有少许波动;压力梯度随抽油杆转速的增加而降低;在给定的试验条件下,抽油杆最佳转速为18r/min,质量浓度600mg/L聚合物溶液在偏心度为40%的偏心环空中的压力梯度最小,最节能。Using the PIV to test the flow field of the fluid in the eccentric annulus of the ground-driven screw-pump borehole,the distribution law of the axial speed of the fluid and the relation between the flowrate,rotary speed of sucker rod and the gradient of the fluid pressure were studied. The results show that turbulent flow will arise at wide clearance in the ground-driven screw-pump borehole. The distribution of the axial speed of the fluid is M-shaped. It is not of a typical convex parabola,but of slight fluctuation. The pressure gradient decreases with the increase of the rotary speed of sucker rod. Under given experimental conditions,the optimum rotary speed of sucker rod is 18 r/min and the pressure of the eccentric annulus is minimum and most energy-saving.

关 键 词：螺杆泵 偏心环空 PIV 流场 轴向速度 压力梯度 

分 类 号：TE933.3[石油与天然气工程—石油机械设备] O35[理学—流体力学]