Method for calculating dynamic loads and energy consumption of a sucker rod installation with an automatic balancing system

The efficiency of sucker rod pump installations, which have become widespread in mechanized lift practice, is largely determined by the balance of the drive. During the operation of sucker rod installations, the balance of loads acting on the rod string and the drive can change significantly due to changes in the dynamic fluid level, which leads to a decrease in balance and an increase in loads on the pumping equipment units. The increase and decrease in the dynamic level in accordance with the pumping and accumulation cycle occurs in wells operating in the periodic pumping mode. It is shown that during the operation of equipment in a periodic mode, fluctuations in the dynamic level and, accordingly, in the loads acting on the nodes occur. This leads to the need for dynamic adjustment of the balancing weights to ensure the balance of the pumping unit. A system for automatic balancing of the rod drive has been developed, including a balancing counterweight, an electric motor that moves the load along the balance beam, a propeller and a computing unit. To study the effectiveness of the proposed device, a complex mathematical model of the joint operation of the reservoir - well - sucker rod pump - rod string – pumping unit has been developed. It is shown that due to the dynamic adjustment of the balance counterweight position, the automatic balancing system makes it possible to significantly reduce the amplitude value of the torque on the crank shaft (in comparison with the traditional rod installation) and provide a more uniform load of the electric motor. Equalization of torque and motor load reduces the power consumption of the unit.

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Novel Approach of Sucker Rod Pump Unit Balance Determination and Monitoring

10.2118/205579-ms ◽

2021 ◽

Author(s):

Yuzar Aryadi ◽

Azis Hidayat ◽

Hilman Lazuardi ◽

Syahroni Isnanto ◽

Bonni Ariwibowo ◽

...

Keyword(s):

Correction Factor ◽

Electrical Parameter ◽

Standard Procedure ◽

Parameter Distribution ◽

Well Performance ◽

Optimization Software ◽

Sucker Rod ◽

Sucker Rod Pump ◽

Pumping Unit ◽

New Equation

Abstract SCADA optimization platform is implemented to monitor and evaluate well performance. For Sucker Rod Pump, SCADA Optimization Software can be used to monitor the unit balance and gearbox torque. In some ways, not all required well configuration data for SCADA Optimization Software to do a calculation of counterbalance torque (CBT) for pumping unit balance and gearbox torque evaluation are available. Standard field Counterbalance Effect (CBE) measurement might be performed to calculate the CBT value. However, this standard procedure is limited to well that run on balance condition. For well with unbalance condition, the measured CBE needs to be adjusted by a correction factor which the equation will be presented in this paper. The corrected CBE value from the new equation is then inputted to the SCADA Optimization software to perform day-to-day real-time monitoring of pumping unit balance and gearbox torque. Derivation of the CBE correction factor equation is presented. Validation upon this new equation is performed by comparing the result with electrical measurement on the pumping unit motor. Using the calculated CBT from the new equation, SCADA Optimization Software performs gearbox torque and pumping unit balance analysis based on every collected dynamometer card. Calculated CBT from the new equation provided results in gearbox torque distribution pattern that match with measured electrical parameter distribution along the stroke. This CBT value assists SCADA optimization software to calculate pumping unit balance and gearbox torque. Alarm in the SCADA optimization software that coming from an anomaly on pumping unit balance and gearbox torque help operator to do preventive maintenance so that pumping unit component especially the gearbox could have longer run life.

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Building the dynamometer card of sucker rod pump using power consumption of the eclectic motor of pumping unit

2012 IV International Conference "Problems of Cybernetics and Informatics" (PCI) ◽

10.1109/icpci.2012.6486365 ◽

2012 ◽

Cited By ~ 2

Author(s):

Gambar Guluyev ◽

Adalat Pashayev ◽

Fahrad Pashayev ◽

Asif Rzayev ◽

Elkhan Sabziev

Keyword(s):

Power Consumption ◽

Sucker Rod ◽

Sucker Rod Pump ◽

Pumping Unit ◽

Dynamometer Card

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Control measuring and information system of the experimental stand

Proceedings of the higher educational institutions ENERGY SECTOR PROBLEMS ◽

10.30724/1998-9903-2020-22-4-88-98 ◽

2020 ◽

Vol 22 (4) ◽

pp. 88-98

Author(s):

A. N. Tsvetkov ◽

V. Yu. Kornilov ◽

A. R. Safin ◽

A. G. Logacheva ◽

T. I. Petrov ◽

...

Keyword(s):

Information System ◽

Real Field ◽

High Tech ◽

Pump Unit ◽

Experimental Stand ◽

Automation Systems ◽

Sucker Rod ◽

Sucker Rod Pump ◽

Pumping Unit ◽

And Control

Modern trends in the development of technology are based on the need for experimental studies of the equipment being developed in laboratory conditions with the maximum approximation of the operating modes to real ones. Such studies are impossible without the development of specialized stands with test automation systems. Automation of processes involves the organization of measuring channels as part of a stand using analog-to-digital conversion (ADC), digital-to-analog conversion (DAC), digital-todigital conversion (DDC) and the development of a hardware-software complex (HSC) based on high-speed computing devices. As part of the project to create new high-tech equipment, the specialists of FSBEI HE “KSPEU” and JSC “ChEAZ” developed and created an experimental stand designed to verify and confirm the correctness of the selected structural and circuit solutions used in the design of a synchronous valve electric motor (SVEM) and rod control station borehole pumping unit (RC SBPU). The object of experimental research was the prototype and prototype electric drives of oil pumping units, as well as their components: SVEM and RC SBPU. The article discusses the ways of organizing the measuring and control channels of the measuring and information system of the experimental bench, which allows to study samples of synchronous valve motors and control stations of the sucker rod pump unit in the regimes that are as close as possible to real field conditions simulating the operation of the oil pumping unit of the sucker rod pump unit. Thus, in the experimental stand, analog, discrete and digital control and control channels are implemented.

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Wells production viscosity measurement results application for pumping equipment operation diagnostics

Proceedings of OilGasScientificResearchProjects Institute SOCAR ◽

10.5510/ogp2021si200584 ◽

2021 ◽

pp. 152-160

Author(s):

I. Sh. Mingulov ◽

◽

M. D. Valeev ◽

V. V. Mukhametshin ◽

L. S. Kuleshova ◽

...

Keyword(s):

Dynamic Model ◽

Viscosity Measurement ◽

Fluid Viscosity ◽

Oil Viscosity ◽

Equipment Operation ◽

State Register ◽

Measurement Results ◽

Sucker Rod ◽

Sucker Rod Pump ◽

Pumping Equipment

The article is devoted to the diagnostics of the well pumping equipment operation using wells production viscosity measurement results obtained by the developed field device VNP 1-4, 0-90. The method for making measurements with a field oil viscometer was developed in accordance with the provisions of GOST R 8.563, GOST R ISO 5725-2. It has gained certification and entered the State Register of the Russian Federation. On the basis of preliminary laboratory studies of oils viscosity from the group of fields of LLC UK «Sheshmaoil», a formula was obtained for the dependence of oil emulsions viscosity on temperature and the content of formation water in them. Viscosity measurements obtained with the developed device in field conditions have shown the applicability of the method for calculating the watered oil viscosity.The application of the results of measuring the watered oil viscosity at the wellhead allows diagnosing the downhole sucker rod pump unit operation based on the construction of a dynamic model of its operation. Keywords: equipment diagnostics; water cut; temperature; fluid viscosity; dynamic model; sucker rod pump.

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Research Concerning the Optimization of the Mechanism of the Conventional Sucker Rod Pumping Units

Revista de Chimie ◽

10.37358/rc.19.5.7217 ◽

2019 ◽

Vol 70 (5) ◽

pp. 1795-1799

Author(s):

Georgeta Toma

Keyword(s):

Dynamic Analysis ◽

Operating Parameters ◽

Optimal Solutions ◽

Structural Elements ◽

Sucker Rod ◽

Pumping Unit ◽

Pumping Equipment ◽

Pumping Units

Finding optimal solutions to design the mechanism of the conventional sucker rod pumping units is always present due to many problems that involve. The study in this case involves both the cinematic and dynamic analysis of the mechanism of the conventional pumping units, making sure that the optimization solution maintain unchanged certain operating parameters of the pumping equipment such as the stroke of the sucker rod column. In the paper is presented a method of determining the optimal dimensions of the structural elements of the mechanism of the conventional pumping units in order to reduce the maximum values of the connection forces in the bearings in the conditions of maintaining unchanged the stroke of the sucker rod column. The simulations have been performed in the case of a C-640D-305-120 pumping unit.

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MODELING OF DYNAMOMETER CARDS IN QUASISTEADY OPERATION MODES OF SUCKER ROD PUMPS

Oil and Gas Studies ◽

10.31660/0445-0108-2015-4-51-56 ◽

2015 ◽

pp. 51-56

Author(s):

V. D. Kovshov ◽

M. E. Sidorov ◽

S. V. Svetlakova

Keyword(s):

Normal Operation ◽

Fluid Level ◽

The Poor ◽

Operation Modes ◽

Sucker Rod ◽

Sucker Rod Pump ◽

Pumping Unit ◽

Inflow Conditions

The article presents the dependences, permitting to calculate the fluid level in the annulus of the sucker rod pump (SRP) at step changing of the beam-pumping unit actions number and to simulate the SRP dynamometer cards . It is shown that the dynamometer cards of SRP measured during normal operation and in the poor inflow conditions enable to assess the fluid level in the annulus, a maximum fluid influx into the borehole and parameters of the reservoir.

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DETERMINATION OF THE INPUT PARAMETERS OF THE WORK-STREAM OF THE OIL-GAS EJETOR USED SIMULTANEOUSLY WITH THE SUCKER-ROD PUMP

Prospecting and Development of Oil and Gas Fields ◽

10.31471/1993-9973-2019-1(70)-60-69 ◽

2019 ◽

pp. 60-69

Author(s):

O.Ya. Dubey

Keyword(s):

Gas Content ◽

Maximum Pressure ◽

Gas Mixture ◽

Oil Well ◽

Jet Pump ◽

Mixture Density ◽

Sucker Rod ◽

Sucker Rod Pump ◽

Pumping Unit ◽

Oil Gas

In order to calculate the working mode of a sucker-rod pump driven by the beam pumping unit and a jet pump during their simultaneous operation, pressure and temperature distribution along the wellbore from the bottom to the wellhead is determined for the real oil well 753-D "Dolynanaftogaz" Field Office. To calculate these parameters an improved methodology based on known Poettmann-Carpenter and Baxendel methods is used. As a result, the imperfection of these methods was eliminated, namely the assumption that pressure and temperature behavior along the wellbore is linear. This led to obtaining results which are up to 23% more accurate. In addition, using the algorithm for determining the density of perfect (ideal) liquid-gas mixture, the author has calculated the velocities of gas-water-oil and water-oil mixtures for a number of sections along the production tubing at different angles of the crank position in the beam pumping unit. The indicated values make it possible to determine the depth of the oilgas jet pump location in the well, and, consequently, the parameters at its input (pressure, temperature, velocity of the liquid-gas mixture, its density, etc.). Besides, the author studies the dependence which describes the behavior of the liquid-gas mixture density along the wellbore, as well as the relations between the density of the free oil gas, thevolumetric consumption gas content of the flow and the placement of the section under consideration. All of the above-mentioned algorithms were implemented using developed computer programs. The obtained results give a possibility to choose the location of the jet pump in the well which is the most advantageous one for ensuring maximum pressure reduction and the decrease in the stem load.

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Development of a stand for researching electric drives of pumping units

Vestnik MGTU ◽

10.21443/1560-9278-2020-23-4-364-375 ◽

2020 ◽

Vol 23 (4) ◽

pp. 364-375

Author(s):

A. N. Tsvetkov ◽

V. Yu. Kornilov ◽

A. R. Safin ◽

N. E. Kuvshinov ◽

T. I. Petrov ◽

...

Keyword(s):

Energy Efficiency ◽

Electric Motor ◽

Frequency Converter ◽

Electric Motors ◽

Electric Drives ◽

Sucker Rod ◽

Pumping Unit ◽

Pumping Units ◽

Efficiency And Reliability ◽

Asynchronous Electric Motor

In the modern oil industry, the vast majority of oil production units are represented by sucker rod pumping units, driven mainly by asynchronous electric motors without using any monitoring, control and regulation means. Studies carried out on such installations show their low energy efficiency and reliability. Therefore, the issue of developing complex electric drives of a new generation based on the use of synchronous valve electric motors is relevant allowing to significantly increase the energy efficiency and reliability of both individual installations and to ensure the creation of "smart" oil field control systems. The paper discusses new technical solutions of the experimental stand which makes it possible to study the energy characteristics of electric drives based on asynchronous and synchronous valve electric motors, as well as allowing to create conditions as close as possible to real field conditions with imitation of the operation of an oil pumping unit of a sucker rod pumping unit. In modern test equipment systems, devices are often used to create a mechanical load on the shaft of the electric motor under study. The system proposed and implemented as such a device is "a frequency converter - load asynchronous electric motor", which has been tested on a stand and has proven to be the best in comparison with traditional circuits using DC motors. But using of a load asynchronous electric motor as part of the test stand has revealed a number of disadvantages: overheating of the electric motor operating in the opposing mode, low accuracy of creating the load torque and the speed of the system's response. The problem of overheating of the load electric motor has been solved by transferring the frequency converter to the direct torque control mode, while a significant decrease in the motor current and stabilization of the temperature regime have been detected. The low accuracy and response speed of the system have been increased by introducing feedback and a PID controller into the stand control system.

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