scholarly journals Research Concerning the Predictive Evaluation of the Motor Moment at the Crankshaft of the Conventional Sucker Rod Pumping Units

2019 ◽  
Vol 70 (2) ◽  
pp. 378-381
Author(s):  
Dorin Badoiu ◽  
Georgeta Toma
Keyword(s):  
Computer Program ◽  
Predictive Model ◽  
Calculation Model ◽  
Model Parameters ◽  
Programming Environment ◽  
Model Errors ◽  
Proper Functioning ◽  
Sucker Rod ◽  
Polished Rod ◽  
Pumping Units

It is well known that the variation on the cinematic cycle of the motor moment at the crankshaft of the conventional pumping units characterizes their proper functioning. In the paper it was developed a predictive calculation model of the motor moment at the crankshaft depending on the force at the polished rod. The estimation of the predictive model parameters has been done by minimizing a function that contains the calculus model errors. The experimental records have been processed with the program Total Well Management. The simulations have been performed with a computer program developed by the authors using Maple programming environment.

scholarly journals Research Concerning the Use of Polynomial Functions in the Study of the Conventional Sucker Rod Pumping Units

2019 ◽  
Vol 70 (4) ◽  
pp. 1223-1227
Author(s):  
Dorin Badoiu
Keyword(s):  
Computer Program ◽  
Polynomial Functions ◽  
Programming Environment ◽  
Dynamic Parameters ◽  
Structural Elements ◽  
Functional Optimization ◽  
Precise Form ◽  
Proper Functioning ◽  
Sucker Rod ◽  
Pumping Units

The analysis of the conventional sucker rod pumping units and especially their dynamics is laborious and requires a large amount of calculations due to the constructive complexity of the component structural elements. Therefore, expressing in a simplified but sufficiently precise form the various cinematic and dynamic parameters that characterize the proper functioning of the pumping units is extremely useful in analyzing the possibilities of their functional optimization. In the paper are presented a series of results concerning the expressing of some cinematic and dynamic parameters using polynomial functions in the case of the mechanism of a C-640D-305-120 pumping unit. The simulations have been performed with a computer program developed by the author using Maple programming environment. Experimental records processing was performed with the program Total Well Management.

Research Concerning the Kinetostatic Analysis of the Mechanism of the Conventional Sucker Rod Pumping Units

2018 ◽  
Vol 69 (7) ◽  
pp. 1855-1859
Author(s):  
Dorin Badoiu ◽  
Georgeta Toma
Keyword(s):  
Computer Program ◽  
Programming Environment ◽  
Sucker Rod ◽  
Pumping Units

It is well known that the bearings of the mechanism of the conventional pumping units are heavily loaded so that their design has to be accomplished very carefully. In this scope the values of the connection forces acting on these bearings has to be determined as accurately as possible. In the paper is presented the kinetostatic analysis of the mechanism of the conventional sucker rod pumping units, obtaining in this way the values of the connection forces in the joints and of the motor moment at the cranks shaft. For processing the experimental records it has been used the program Total Well Management. The simulations have been performed with a computer program developed by the authors using Maple programming environment.

scholarly journals Research Concerning the Dynamic Model of the Conventional Sucker Rod Pumping Units

2019 ◽  
Vol 70 (8) ◽  
pp. 2818-2821
Author(s):  
Georgeta Toma
Keyword(s):  
Computer Program ◽  
Dynamic Model ◽  
Angular Speed ◽  
Management Program ◽  
Programming Environment ◽  
Synthesis Parameters ◽  
Mass Moment ◽  
Sucker Rod ◽  
Mass Moment Of Inertia ◽  
Pumping Units

The study of the dynamic model of the conventional sucker rod pumping units requires first determining the variation on the cinematic cycle of the synthesis parameters (the reduced moment and the reduced mass moment of inertia) and then the variation of the angular speed of the cranks, in response to the dynamic and resistant actions on the component elements that appear during operation. The paper presents the way of determining the variation on the cinematic cycle of the synthesis parameters of the dynamic model corresponding to the conventional pumping unit mechanism and of the variation of the angular speed of its cranks. The experimental records have been processed with the Total Well Management program. The simulations have been performed with a computer program developed by the author using the Maple programming environment.

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.

Research Concerning the Movement Equation of the Mechanism of the Conventional Sucker Rod Pumping Units

2019 ◽  
Vol 70 (7) ◽  
pp. 2477-2480
Author(s):  
Dorin Badoiu
Keyword(s):  
Dynamic Response ◽  
Computer Program ◽  
Angular Speed ◽  
Precise Determination ◽  
Management Program ◽  
Programming Environment ◽  
Synthesis Parameters ◽  
Sucker Rod ◽  
Pumping Units

Establishing and then solving the movement equation of the mechanism of the conventional sucker rod pumping units allows determining the variation on the cinematic cycle of the angular speed of the cranks as a dynamic response to the motor and resistant actions on the component elements. The evaluation as accurate as possible of the dynamic response depends on a more precise determination of the variation on the cinematic cycle of the synthesis parameters that occur in the movement equation of the mechanism of the pumping units. In the paper is established the movement equation of the mechanism of the conventional pumping units and are presented a series of results regarding the variation on the cinematic cycle of some synthesis parameters in the case of the mechanism of a C-640D-305-120 pumping unit. Experimental records have been processed with the Total Well Management program and the simulations have been performed with a computer program developed by the author using the Maple programming environment.

scholarly journals RESEARCH CONCERNING THE SIMULATION OF THE OPERATION OF CONVENTIONAL SUCKER ROD PUMPING UNITS

2021 ◽  
Vol 2(73) (2) ◽  
pp. 33-39
Author(s):  
Georgeta Toma ◽  
Keyword(s):  
Computer Program ◽  
Calculation Method ◽  
Operating Parameters ◽  
Motor Torque ◽  
Sucker Rod ◽  
Pumping Unit ◽  
Pumping Units

In the paper is presented a method for obtaining the variation during a cinematic cycle of the motor torque at the crankshaft in the case of the conventional sucker rod pumping units. The calculation method has been transposed into a computer program which allows establishing the influence of different constructive and operating parameters of the pumping units on the variation of the motor torque at the crankshaft. Finally, a series of results of the simulations performed in the case of a C-640D-305-120 pumping unit are presented.

Simulation of the Sucker Rod Column Dynamics for Different Pumping Regimes

2017 ◽  
Vol 68 (11) ◽  
pp. 2593-2596
Author(s):  
Georgeta Toma ◽  
Alexandru Pupazescu ◽  
Dorin Badoiu
Keyword(s):  
Computer Program ◽  
Experimental Results ◽  
Proper Functioning ◽  
Sucker Rod ◽  
Column Dynamics ◽  
Simulation Results

Proper functioning of the sucker rod pumping installations is strongly influenced by the sucker rod column dynamics and can be appreciated, as is well known and widely applied in practice, by the allure of the surface dynagraph. The paper presents some results concerning the simulation of the sucker rod column dynamics obtained with a computer program developed by the authors. The simulation results are compared with experimental results obtained at two pumping installations. Then, the computer program is used to study the sucker rod column dynamics for another pumping regime at one of analyzed installations.

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.

Research for Calculation Model of Allotypic Pumping Unit Load

2014 ◽  
Vol 527 ◽  
pp. 121-129
Author(s):  
Xue Qi Cen ◽  
Xiao Dong Wu ◽  
Shu Wei ◽  
Xi Shun Zhang ◽  
Jia Ming Zhang ◽  
...  
Keyword(s):  
Calculation Model ◽  
Oil Field ◽  
Superposition Method ◽  
Unit Load ◽  
Unit Type ◽  
Load Calculation ◽  
Pumping Unit ◽  
Polished Rod ◽  
Pumping Units ◽  
Selection Of

A research has been developed for calculation models of allotypic pumping units load against a series of problems, which are ubiquitous in the oil field, such as unreasonable selection of the pumping unit type, low capacity factor of the pumping unit load, lacking of computing method of allotypic pumping unit load, etc. In the research, a calcaulation model of polished rod motion parameters has been firstly established according to the architectural feature of offset pumping units, dual horsehead pump units and tower pumping units. Then the load calculation model of allotypic pumping units were built based on the superposition method of each rod string stress. And after validating the load models in the oil field, the results have been indicated that the models have been in good agreement with the polished rod load. Therefore, the load calculation model of allotypic pumping units in this paper will be of some guidance significance to the selection of the pumping unit type and the stress check of the rod string in the oil field.

Increasing reliability of wireline hangers of sucker-rod pumping units

2019 ◽  
pp. 33-38
Author(s):  
A.A. Ivanchenko ◽  
◽  
G.D. Trifanov ◽  
D.I. Shishlyannikov ◽  
M.M. Tyaktev ◽  
...  
Keyword(s):  
Sucker Rod ◽  
Pumping Units
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