A New Model to Evaluate Polished Rod Load of Sucker Rod Pumping System

2018 ◽  
Author(s):  
Yanbo Wang ◽  
Sai Wang ◽  
Lu Yang ◽  
Hui Pu ◽  
Kegang Ling
Keyword(s):  
New Model ◽  
Pumping System ◽  
Sucker Rod ◽  
Polished Rod

Research of Rod Pump Load Reducing Technology on Deep Wells

2013 ◽  
Vol 772 ◽  
pp. 808-813 ◽  
Author(s):  
Xue Qi Cen ◽  
Xiao Dong Wu ◽  
Gang Lei ◽  
Shu Qin Ma
Keyword(s):  
High Load ◽  
Electric Motors ◽  
Pumping System ◽  
Deep Wells ◽  
Sucker Rod ◽  
Sucker Rod Pump ◽  
Pump Placement ◽  
Beam Pump ◽  
Polished Rod ◽  
Placement Depth

As the sucker-rod pump placement depth increases, the load at the polished rod rises as well. Meanwhile, high load at the polished rod limits further increase of pump placement depth. This paper mainly analyses polished rod load on pumping system units and describes several methods to reduce beam pump load that are used in deep wells. On the basis of theoretical analyzing of three load reducing technologies such as application of compound fiberglass sucker rods, linear electric motors and rod load reducer, it was determined that using compound fiberglass rods in real practical cases shows obviously higher efficiency than other two. linear electric motors technology has advantages of being used in deep wells as well. Moreover rod load reducer shows good performance in deep wells, but because it does not possess energy conservation characteristic it may be uneconomic and less effective during production.

scholarly journals Prediction and Analysis of Polished Rod Dynamometer Card in Sucker Rod Pumping System with Wear

2018 ◽  
Vol 2018 ◽  
pp. 1-10 ◽  
Author(s):  
Dongyu Wang ◽  
Hongzhao Liu
Keyword(s):  
Initial Conditions ◽  
Abrasive Particle ◽  
Particle Diameter ◽  
Wear Volume ◽  
Wear Time ◽  
Pumping System ◽  
Sucker Rod ◽  
Dynamometer Card ◽  
Wear Law ◽  
Polished Rod

In the oil production process, the wear of friction pairs in sucker rod pumping installations will increase over time, which leads to the failure of the sucker rod pumping system. In order to study the effect of wear on the sucker rod pumping system, a wear model between the plunger and pump barrel was established. By analyzing the wear law, the wear volume and wear time of the pump barrel were calculated under abrasive wear. The forces of the sucker rod microunit were analyzed, and the wave equation of the sucker rod was established. Based on the given boundary and initial conditions, a mixed difference method was used to solve the equation. Taking the no. L2111 well of an oilfield as an example, the change curves of the wear volume and wear time with abrasive particle diameter were plotted, and the polished rod dynamometer card considering wear was predicted. The results showed that the increased clearance caused by wear will reduce the polished rod load on upstroke of the sucker rod pumping system, which could provide a theoretical basis for the next fault diagnosis.

Calculation of Load and Stroke in Oil-Well Pump Rods

1943 ◽  
Vol 10 (1) ◽  
pp. A1-A12
Author(s):  
B. F. Langer ◽  
E. H. Lamberger
Keyword(s):  
Longitudinal Vibration ◽  
Oil Wells ◽  
Oil Well ◽  
Test Results ◽  
Sucker Rod ◽  
Sucker Rod Pump ◽  
Polished Rod

Abstract The sucker-rod pump as used in oil wells is treated as a problem in the longitudinal vibration of bars. Solutions are obtained for the forces and motions at both ends of the rod string, thus giving formulas for the calculation of polished-rod load and plunger travel. The results of the calculations are compared with test results.

Installation of A Sucker Rod Pumping System Over a Failed Electrical Submersible Pumping System to Recover Production Using Rigless Intervention

2020 ◽  
Author(s):  
Fábio Soares De Lima ◽  
Carlos Francisco Sales De Souza ◽  
José Paulino Da Silva Neto
Keyword(s):  
Pumping System ◽  
Sucker Rod

scholarly journals Improved method on hydraulic power calculations for conventional sucker rod pumping system

2020 ◽  
Vol 431 ◽  
pp. 012026
Author(s):  
O E Mwangupili ◽  
P Chunsheng ◽  
C Bululu ◽  
S L Nyanswi ◽  
S M Muya
Keyword(s):  
Improved Method ◽  
Hydraulic Power ◽  
Power Calculations ◽  
Pumping System ◽  
Sucker Rod

Study on Rational Use of the Sucker Rod String Vibration Energy Mechanism

2013 ◽  
Vol 694-697 ◽  
pp. 325-328
Author(s):  
Su Ling Wang ◽  
Nan Yang Bai ◽  
Ming Xi Feng ◽  
Huai Yu Zhang
Keyword(s):  
Three Dimensional ◽  
Variable Stiffness ◽  
Liquid Column ◽  
Vibration Energy ◽  
Rational Use ◽  
String Vibration ◽  
Unit Energy ◽  
Sucker Rod ◽  
Polished Rod ◽  
The Impact

Rational and efficient use of the sucker rod vibration energy is one of the effective ways of pumping unit energy saving. The vibration mechanics as the basis for establishing three-dimensional coupled vibration mathematical model of sucker rod-tubing-liquid column, and using difference solution to reproduce vibration process within one stroke of the sucker rod string, on this basis, analyzing the variable stiffness sucker rod string to the impact of the polished rod load and the pump stroke, and gaining reasonable parameters of the sucker rod string vibration energy, and combining with the working conditions of the sucker rod string to establish the match conditions of the sucker rod string liquid column incentive and polished rod incentive, and proposing the condition of pump to generate over-stroke to provide the theoretical basis for rational use of the sucker rod string vibration energy.

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