scholarly journals Novel physical network algorithm for indirect measurement of polished rod load of beam-pumping unit

2019 ◽  
Vol 2019 (10) ◽  
pp. 7287-7292
Author(s):  
Ke Wang ◽  
Guoliang Gong ◽  
Rongxuan Shen ◽  
An Wang ◽  
Zhaolin Yao ◽  
...  
Keyword(s):  
Indirect Measurement ◽  
Physical Network ◽  
Network Algorithm ◽  
Pumping Unit ◽  
Polished Rod

Modeling of Dynamic Loads on the Polished Rod of Pumping Unit in Case of Mulfunction of Rod Pump Operating

2014 ◽  
Vol 10 ◽  
pp. 95-101
Author(s):  
A.S. Topolnikov
Keyword(s):  
Multiphase Flow ◽  
Satisfactory Agreement ◽  
Model Simulation ◽  
Theoretical Modeling ◽  
Dynamic Loads ◽  
Plunger Pump ◽  
Proposed Model ◽  
Pumping Unit ◽  
Polished Rod

The paper presents the results of theoretical modeling of joined movement of pump rods and plunger pump and multiphase flow in a well for determination of dynamic loads on the polished rod of pumping unit. The specificity of the proposed model is the possibility of taking into account for complications in rod pump operating, such as leakage in valve steam, presence of gas and emulsion, incorrect fitting of plunger inside the cylinder pump. The satisfactory agreement of results of the model simulation with filed measurements are obtained.

Dynamic Adjusting Mechanism of Counterbalance in Beam-Pumping Unit and its Kinetic Analysis

2013 ◽  
Vol 455 ◽  
pp. 274-278 ◽  
Author(s):  
Xiao Qing Kang ◽  
Tao Ren ◽  
Wen Tao Qu
Keyword(s):  
Kinetic Model ◽  
Kinetic Analysis ◽  
Transmission Mechanism ◽  
Power Cost ◽  
Data Comparison ◽  
Increase Productivity ◽  
Pumping Unit ◽  
Polished Rod

The purpose of conventional counterbalance mechanism featuring a fixed counterbalance torque is to balance the nonuniformity of polished rod load. Therefore, it cannot satisfy the demand of polish rod load which changes with well-condition and then leads to increase of power cost for decreasing quality of balance. This paper presents a new dynamic adjusting mechanism of counterbalance in beam-pumping unit that can adjust the counterbalance torque automatically without stopping the unit according to the new balance parameters derived by analyzing the variation of well-condition and increase productivity at the same time. A data comparison based on the corresponding kinetic model of transmission mechanism is also discussed.

Design Research on Working Mechanism of Beam Pumping Unit

2010 ◽  
Vol 37-38 ◽  
pp. 340-343 ◽  
Author(s):  
Jun Liu ◽  
Jiang Zhu
Keyword(s):  
Design Research ◽  
Simulated Annealing Algorithm ◽  
Optimal Solution ◽  
Working Mechanism ◽  
Type Curves ◽  
Boundary Constraints ◽  
Annealing Algorithm ◽  
Pumping Unit ◽  
Working Parameters ◽  
Polished Rod

Based on the unique geometry and mechanical movement of beam pumping unit, this paper presented a simple swing equation and computed motorial parameter, meanwhile under the conditions of the static load and inertial load of the polished-rod of a conventional pumping unit, it also presented an equivalent dynamic model of the pumping unit system and the type-curves of net torque of the crankshaft with the characteristic of inertial counterbalance having been computed, the model can provide a theoretical base for study on the other transient working parameters of beam pumping unit. Being satisfied with motion accuracy and boundary constraints, the optimization model of beam pumping unit is established. The simulated annealing algorithm with penalty strategy is adopted to solve the optimal model, so that optimization process was simplified and the global optimal solution is ensured reliably.

scholarly journals Research Concerning the Correlations Between Some Experimental Results in the Case of a Sucker Rod Pumping Installation

2018 ◽  
Vol 69 (11) ◽  
pp. 3060-3063
Author(s):  
Dorin Badoiu ◽  
Georgeta Toma
Keyword(s):  
Computer Program ◽  
Rotation Speed ◽  
Experimental Results ◽  
Programming Environment ◽  
Sucker Rod ◽  
Pumping Unit ◽  
Polished Rod

In the paper are analyzed the correlations between the experimental results obtained for the instantaneous rotation speed of the cranks shaft of a conventional sucker rod pumping installation and the speed and the acceleration at the end of the polished rod. The correlations have been established by analyzing the kinematics of the mechanism of the sucker rod pumping unit. The experimental records have been processed with the program Total Well Management. A computer program for performing the simulations has been developed by the authors using Maple programming environment.

Low-Dimensional Modeling of a Pumping Unit to Cope With Multiphase Flow

2017 ◽  
Vol 139 (4) ◽  
Author(s):  
Ala E. Omrani ◽  
Matthew A. Franchek ◽  
Behrouz Ebrahimi ◽  
Mete Mutlu ◽  
Karolos Grigoriadis
Keyword(s):  
Multiphase Flow ◽  
System Response ◽  
Two Phase ◽  
Pump Speed ◽  
Rod System ◽  
Sucker Rod ◽  
Pumping Unit ◽  
The Difference ◽  
Low Dimensional ◽  
Polished Rod

Pumping unit efficiency is highly disturbed by the presence of gas influx reducing the productivity and inducing unpredictable system response due to the change of its intrinsic properties such as the natural frequency. A poor estimation of those properties may affect the on-field crew and system safety as well as the production rate. The purpose of this paper is to construct a hydromechanical model describing the coupled multiphase flow-pumping unit system dynamics and to develop a procedure to control the pumping speed for safety assurance and oil production maximization. A coupled mechanical-multiphase flow model capturing the interplay between the gas void fraction (GVF) and the driving harmonic force of the pumping unit is developed. Specifically, the predicted downhole pressure is used to determine the sucker rod effective load. Consequently, a reduced-order model, capturing the dynamics of the sucker rod, is used to estimate the saddle bearings axial displacements which are function of polished rod loading. An error-driven adaptation using the difference between presumed bearing displacement with known GVF and the predicted bearing displacement from the proposed multiphysics model is employed to estimate the unknown downhole GVF. The obtained results prove that the adaptation allows an accurate evaluation of the pumped fluid's GVF, thereby circumventing the need for a costly and inaccurate measurement of the two-phase flow gas fraction. Based on this estimation, a control strategy is then proposed to regulate the pump speed while avoiding the resonance frequency of the sucker-rod system.

Cloud Computation Processing for Oilfield Block Data and Chain Drive Pumping Unit Polished Rod Motion Model

2016 ◽  
Vol 89 (1) ◽  
pp. 41-50
Author(s):  
Haihui Zhao ◽  
Yaoguang Qi ◽  
Hongwei Du ◽  
Ningning Wang ◽  
Guofu Zhang ◽  
...  
Keyword(s):  
Motion Model ◽  
Chain Drive ◽  
Block Data ◽  
Pumping Unit ◽  
Cloud Computation ◽  
Polished Rod

scholarly journals An energy-saving pumping system with novel springs energy storage devices: Design, modeling, and experiment

2017 ◽  
Vol 9 (1) ◽  
pp. 168781401668745 ◽  
Author(s):  
Hong jun Meng ◽  
Long Quan ◽  
Zhanlin Wang ◽  
Cheng wen Wang ◽  
Yuan Lan
Keyword(s):  
Energy Saving ◽  
Test System ◽  
Load Test ◽  
Energy Storage Devices ◽  
Pumping System ◽  
Light Load ◽  
Pumping Unit ◽  
Dynamometer Card ◽  
Polished Rod ◽  
The Impact

For the traditional reciprocating pumping unit, it generally starts at the bottom dead point with full load and is accelerated when starting and decelerated when stopping, which not only requires great energy from the motor but also impact on the output torque of motor. In order to tackle the above problems, we propose an energy-saving smooth reversing pumping system, which could store the energy in deceleration by making use of springs, and the stored energy could be reused in acceleration after reversion. This novel system targets to make the motor starting with light load, which could reduce the fluctuation in motor torque, decrease the starting time. In this article, a dynamic model and an efficiency model are established to compute the polished rod load dynamometer card and efficiency of the pumping unit. It is shown that the installed springs could help to reduce the impact on the system when reversing, and significantly decrease the energy consumption. In addition, we set up the real pumping system with load test system to verify the effectiveness of the model establishment. Through the experiment, the proposed pumping system could save energy up to 9.204% as compared to the traditional reciprocating pumping system.

Pumping Unit Optimization Design Based on Virtual Prototype Technology

2014 ◽  
Vol 490-491 ◽  
pp. 533-537
Author(s):  
Li Zhang ◽  
Jin Ling Xing ◽  
Bao Hua Chang ◽  
Lei Wei
Keyword(s):  
Optimization Design ◽  
Virtual Prototype ◽  
Skeletal Structure ◽  
Analysis Method ◽  
Accurate Analysis ◽  
Kinematics Simulation ◽  
Calculation Results ◽  
Pumping Unit ◽  
Virtual Prototype Technology ◽  
Polished Rod

Using Solidworks establish the virtual prototype of the conventional beam pumping unit. After that, by using ADAMS moves on to the kinematics simulation of prototype, detailed the polished rod motion parameters curves are present. When compared the results with the calculation results of accurate analysis method, discovered that these two results of different methods coincide quite well, and the reliabilities of simulation results of using virtual prototype technology. are validated. The optimal design of pumping unit skeletal structure parameters is explored in this paper, taking the polished rod acceleration as objective functions. From the simulation solution, we get the optimal structure and size of pumping unit. Virtual prototype technology provides a kind of economical, fast and reliable way to design and optimize structure of the pumping unit.

scholarly journals Analysis of the Dynamic Response of the Mechanism of Conventional Sucker rod Pumping Units

2020 ◽  
Vol 71 (1) ◽  
pp. 395-399
Author(s):  
Dorin Badoiu ◽  
Georgeta Toma
Keyword(s):  
Angular Velocity ◽  
Dynamic Response ◽  
Angular Acceleration ◽  
Constant Angular Velocity ◽  
Sucker Rod ◽  
Motion Parameters ◽  
Pumping Unit ◽  
Polished Rod ◽  
Pumping Units

In the kinetostatic study of the mechanism of the sucker rod pumping units, the cinematic motion parameters of the elements are considered to be known, assuming that the cranks have a constant angular velocity imposed by the operating functioning conditions of the pumping unit. The paper analyzes the dynamic response of the mechanism of these pumping units, which implies the determination of the variation of the angular acceleration of the cranks during the operating cinematic cycle. A series of results regarding the determination of the variation of the angular acceleration of the cranks during the cinematic cycle in the case of the mechanism of a C-640D-305-120 pumping unit are presented. The obtained results are checked by comparing the experimental curves of variations of the acceleration at the polished rod with those obtained by simulation using a computer program developed by the authors in which the angular acceleration of the cranks was taken into consideration.

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