地面驱动螺杆泵抽油杆柱负载扭矩的计算  

Calculation of loading torque on sucker rod in surface driving screw pump system

作　　者：陈涛平[1] 王春艳[2] 孙兆海[3] 钱朝慧[4] 

机构地区：[1]大庆石油学院石油工程学院,黑龙江大庆163318 [2]大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712 [3]大庆油田有限责任公司第十采油厂,黑龙江大庆166405 [4]大庆油田有限责任公司第四采油厂,黑龙江大庆163313

出　　处：《大庆石油学院学报》2004年第6期26-28,共3页Journal of Daqing Petroleum Institute

摘　　要：为完善负载扭矩的计算方法,根据地面驱动螺杆泵的抽油原理,应用环空螺旋流的理论,建立了杆管环空压降及抽油杆柱与井液间摩擦扭矩的数学模型,进而给出了螺杆泵工作时抽油杆柱负载扭矩的计算公式.现场应用结果表明:将环空螺旋流的理论应用于螺杆泵井杆管环空中流体流动规律的描述中,可使螺杆泵抽油杆柱负载扭矩计算值的平均相对误差不大于2.00%;有功扭矩在总扭矩中所占的比例最大;杆液摩擦扭矩受黏度、杆管直径比及泵转速的影响,聚驱油井的杆液摩擦扭矩通常比水驱井的大.To perfect the calculation method of loading torque, the paper is based on the working principle of surface driving screw pump system, and the theory of helical flow in annulus is introduced. In this paper, the mathematical models for calculation of pressure fall and frictional torque between sucker rod and fluid is calculated, giving the calculation formula of loading torque on sucker rod in surface driving screw pump system. The result of field experiments show that the theory of helical flow in annulus is introduced to characterize the fluid rule of liquid in annulus of screw pump, which makes the average error lower than 5.00%. The usable torque is the biggest in other torques and there is impact of mucosity, ratio of diameter and rotate speed to friction torque between sucker rod and fluid, and normally it is higher in water flooding oil than in polymer flooding oil.

关 键 词：地面驱动 螺杆泵 负载扭矩 抽油杆 扭矩计算 

分 类 号：TE355.5[石油与天然气工程—油气田开发工程]