Oil extraction control device of oil pumping unit

Abstract

The utility model relates to an oil extraction control device of a pumping unit. According to the technical scheme, the oil pumping unit control system comprises a controller and an oil pumping unit control cabinet, and the controller controls an oil pumping unit through the oil pumping unit control cabinet; the controller comprises a main control circuit, a power supply circuit and a touch screen, the main control circuit is switched from the power supply circuit to 3.3 V power supply, and the main control circuit adopts an N32G430F8S7 single chip microcomputer; the oil pumping unit control cabinet comprises an oil pumping unit RTU and a frequency converter, and the oil pumping unit RTU monitors oil well parameters online in real time through various sensors and remotely controls starting and stopping of an oil pumping unit. The frequency converter controls the working frequency of the oil pumping unit. The utility model has the beneficial effects that oil well parameters are monitored on line in real time through the controller and the oil pumping unit RTU, and the indicator diagram of the oil pumping unit is analyzed to determine the well condition, so that the operation state of the oil pumping unit is controlled, the labor intensity of workers is greatly reduced, the working accuracy and the oil extraction efficiency of the oil pumping unit are improved, and the energy consumption is reduced.

Description

Technical Field

[0001] The utility model relates to a pumping unit control device, in particular to an oil production control device for a pumping unit. Background Art

[0002] my country has abundant oil and gas reserves, but in recent years, with the continuous exploitation of oil fields, the proportion of low-permeability oil fields in oil and gas production has become increasingly larger, which has caused a series of problems such as "oil pumping without pumping", wasting a lot of electricity. At the same time, the diagnosis of the working condition of the pumping unit lags behind the production of the oil field, causing the control and adjustment of the pumping unit to seriously lag behind the changes in the working condition of the pumping unit, thereby reducing the production capacity of the oil field and causing unnecessary economic losses to the oil field.

[0003] In order to improve oil production efficiency and reduce energy consumption, some oil fields have established digital centralized control systems. Through digital collection of key data of pumping wells, the data is transmitted to the cloud computing center for data analysis and processing, and then the data is transmitted to production management personnel. The current digital pumping control system has realized the informatization of oilfield production to a certain extent, but the current oilfield production still has the following shortcomings: (1) The oilfield information center only collects key parameters of the pumping unit and does not use these key data to guide the production of the pumping unit. (2) The pumping cycle is determined by manual experience. The low permeability oil well has poor fluid supply capacity. The staff determines the switching time of the pumping well based on subjective experience, or adopts an 8-hour / 16-hour fixed-time pumping system. If the pumping system of the pumping well relies on the subjective judgment of the oil well staff, it may reduce the oil production efficiency and liquid production. (3) The adjustment of the flushing frequency cannot be adjusted in real time according to the working conditions of the pumping unit, so it cannot match the actual supply and production balance. The downhole conditions of low permeability oil wells are complex and the liquid level fluctuates greatly. Pumping wells generally adopt a fixed flushing frequency for the operation of the pumping unit. In order to ensure the liquid production, the number of strokes will generally be greater than the reasonable value, resulting in low pump efficiency and large equipment wear.

[0004] The Chinese patent document publication number is CN216866659U, and the patent name is "A pumping unit control system", which includes a power saver. The power saver can be connected to the pumping unit through a cable to collect and display the pumping unit operating parameters in real time, but the system only has a monitoring function and lacks autonomous control over the working status of the pumping unit; for example, the Chinese patent "A pumping unit well fixed liquid level servo oil production system based on screen-controlled variable stroke" (patent publication number is CN112796711A) and "A walking beam pumping unit controller" (patent publication number is CN219392511U). On the basis of monitoring, they can adjust the forward and reverse running direction and running speed of the motor by driving the IGBT switch to output an adjustable amplitude PWM wave, or through the cooperation between the PLC programmable controller and the frequency converter, realize the function of the frequency converter automatically adjusting according to the on-site working conditions, but can only control the working status (direction, speed) of the pumping unit, and cannot autonomously determine the pumping cycle, nor can it adjust the stroke frequency in real time.

[0005] In view of the above problems, the utility model designs an oil production control device for an oil pumping unit. Utility Model Content

[0006] The purpose of the utility model is to provide an oil production control device for a pumping unit in view of the above-mentioned defects in the prior art, which monitors the oil well parameters in real time online through a controller and a pumping unit RTU, analyzes the pumping unit indicator diagram to determine the well condition, and then controls the operating state of the pumping unit to achieve the purpose of increasing liquid production and reducing energy consumption.

[0007] The utility model discloses an oil pumping unit oil extraction control device, the technical solution of which is as follows: comprising a controller (1) and an oil pumping unit control cabinet (2), wherein the controller (1) controls the oil pumping unit (3) via the oil pumping unit control cabinet (2); the controller (1) comprises a main control circuit (1.1), a power supply circuit (1.2) and a touch screen (1.3); the main control circuit (1.1) is powered by the power supply circuit (1.2) and inputs and outputs are performed via the touch screen (1.3); the main control circuit (1 .1) is powered by a power supply circuit (1.2) converted to 3.3V, and the main control circuit (1.1) adopts an N32G430F8S7 single-chip computer; the pumping unit control cabinet (2) includes a pumping unit RTU (2.1) and a frequency converter (2.2); the pumping unit RTU (2.1) monitors the oil well parameters online in real time through a variety of sensors (2.1.1) and remotely controls the start and stop of the pumping unit (3); the frequency converter (2.2) controls the operating frequency of the pumping unit (3).

[0008] Preferably, the above-mentioned oil pumping unit RTU (2.1) is connected to the main control circuit (1.1) using an RS232 transceiver.

[0009] Preferably, the controller (1) as a whole is powered by 24V, wherein the power supply circuit (1.2) converts 24V into 3.3V and supplies power to the main control circuit (1.1).

[0010] Preferably, the power supply circuit (1.2) is composed of two chips, TPS5430DDA and AMS1 117-3.3. TPS5430DDA is a step-down DC-DC power supply chip that reduces the 24V voltage to 5V; AMS1 117-3.3 is a linear regulator with an output of 3.3V, which converts the 5V voltage to 3.3V.

[0011] Preferably, the RS232 transceiver is ICL3232EIAZ-T, which has a data rate of 250 Kbps and a power supply of 3V to 5.5V, and is used to transmit the power diagram of the pumping unit RTU (2.1) and related electrical parameters.

[0012] Preferably, the above-mentioned pumping unit RTU (2.1) communicates with the various sensors (2.1.1) via Zigbee.

[0013] The beneficial effects of the utility model are as follows: the utility model can monitor the oil well parameters in real time online through the controller and the pumping unit RTU, analyze the pumping unit indicator diagram to determine the well condition, and realize closed-loop control of the pumping unit in combination with a given control mode, and can remotely control the start and stop of the pumping unit; at the same time, the utility model can control the working frequency of the pumping unit through the frequency converter to realize inter-pumping cycle and stroke frequency, the operation is simple and easy to use, and can greatly reduce the manual work intensity, improve the accuracy and oil production efficiency of the pumping unit, reduce energy consumption, and avoid the phenomenon of "oil pump empty pumping", so as to achieve the purpose of increasing liquid production and reducing energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of a block diagram of the utility model;

[0015] Figure 2 This is the 24V to 5V power supply circuit connection diagram;

[0016] Figure 3 This is the connection diagram of the 5V to 3.3V power supply circuit;

[0017] Figure 4 This is the schematic diagram of the main control circuit;

[0018] Figure 5 It is the wiring diagram of the oil well control cabinet;

[0019] Figure 6 This is the wiring diagram of the pumping unit RTU and the touch screen;

[0020] In the above figure: controller 1, pumping unit control cabinet 2, pumping unit 3, main control circuit 1.1, power circuit 1.2, touch screen 1.3, pumping unit RTU 2.1, inverter 2.2, sensor 2.1.1, motor 3.1, start / stop button 3.2. DETAILED DESCRIPTION

[0021] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0022] Example 1, reference Figure 1-Figure 6 The utility model mentions a pumping unit oil production control device, comprising a controller 1 and a pumping unit control cabinet 2, wherein the controller 1 controls the pumping unit 3 via the pumping unit control cabinet 2; the controller 1 comprises a main control circuit 1.1, a power supply circuit 1.2 and a touch screen 1.3, wherein the main control circuit 1.1 is powered by the power supply circuit 1.2, and inputs and outputs are performed through the touch screen 1.3; the main control circuit 1.1 is powered by 3.3V converted by the power supply circuit 1.2, and the main control circuit 1.1 adopts an N32G430F8S7 single-chip microcomputer; the pumping unit control cabinet 2 comprises two parts, a pumping unit RTU 2.1 and a frequency converter 2.2, wherein the pumping unit RTU 2.1 monitors the oil well parameters in real time online through a variety of sensors 2.1.1, and remotely controls the start and stop of the pumping unit 3; the frequency converter 2.2 controls the working frequency of the pumping unit 3.

[0023] The above-mentioned pumping unit RTU 2.1 is connected to the main control circuit 1.1 by using an RS232 transceiver, and the pumping unit RTU is the remote terminal device of the pumping unit.

[0024] The controller 1 is powered by 24V as a whole, wherein the power supply circuit 1.2 converts 24V into 3.3V and supplies power to the main control circuit 1.1.

[0025] The power supply circuit 1.2 mentioned above is composed of two chips, TPS5430DDA and AMS1 117-3.3. TPS5430DDA is a step-down DC-DC power supply chip, which reduces the 24V voltage to 5V; AMS1 117-3.3 is a linear regulator with an output of 3.3V, which converts the 5V voltage to 3.3V.

[0026] The above-mentioned RS232 transceiver adopts ICL3232EIAZ-T, which has a data rate of 250Kbps and a power supply of 3V~5.5V, and is used to transmit the power diagram of the pumping unit RTU2.1 and related electrical parameters.

[0027] The above-mentioned pumping unit RTU2.1 communicates with the various sensors 2.1.1 through Zigbee, and the start / stop button 3.2 of the pumping unit is transmitted to the pumping unit RTU2.1. After the pumping unit RTU 2.1 obtains the electrical parameters such as the oil well parameter current, voltage, wellhead temperature, pressure and the indicator diagram data information, after the main control circuit 1.1 analyzes and processes, the result is transmitted to the inverter 2.2, thereby realizing the control of the motor 3.1 of the pumping unit 3.

[0028] The workflow of the utility model comprises the following steps:

[0029] - Reading the oil well parameter current, voltage, wellhead temperature, pressure and other electrical parameters and indicator diagram data obtained by various sensors 2.1.1 connected to the pumping unit RTU 2.1 through the main control circuit 1.1, analyzing and calculating them to determine the working condition of the pumping unit;

[0030] The second operator sets the relevant working parameters on the touch screen 1.3, determines the working mode, and performs closed-loop control on the pumping unit 3 in combination with the well conditions analyzed in step 1, and sends the operating frequency and start / stop information corresponding to the pumping unit strokes processed by the main control circuit 1.1 to the pumping unit RTU 2.1;

[0031] After the three pumping unit RTU 2.1 obtains the above information, it transmits the result to the frequency converter 2.2, thereby realizing the control of the motor 3.1 of the pumping unit 3. At the same time, the working condition and operation status of the pumping unit are displayed on the touch screen 1.3 for reference by the production management personnel, realizing the intermittent pumping cycle and the number of strokes. The operation is simple and easy to use, which can greatly reduce the manual work intensity, improve the accuracy and oil production efficiency of the pumping unit, reduce energy consumption, and avoid the phenomenon of "oil pump empty pumping".

[0032] The above is only a preferred embodiment of the utility model. Any person skilled in the art may modify the utility model by using the above technical solution or modify it into an equivalent technical solution. Therefore, any simple modification or equivalent transformation based on the technical solution of the utility model shall fall within the scope of protection claimed by the utility model.

Claims

1. A pumping unit oil production control device, characterized in that: The invention comprises a controller (1) and an oil pumping unit control cabinet (2), wherein the controller (1) controls an oil pumping unit (3) via the oil pumping unit control cabinet (2); the controller (1) comprises a main control circuit (1.1), a power supply circuit (1.2) and a touch screen (1.3); the main control circuit (1.1) is powered by the power supply circuit (1.2) and inputs and outputs are performed via the touch screen (1.3); the main control circuit (1.1) is powered by 3.3V converted by the power supply circuit (1.2), and the main control circuit (1.1) adopts an N32G430F8S7 single-chip computer; the oil pumping unit control cabinet (2) comprises two parts, namely an oil pumping unit RTU (2.1) and a frequency converter (2.2); the oil pumping unit RTU (2.1) monitors oil well parameters in real time online via a variety of sensors (2.1.1) and remotely controls the start and stop of the oil pumping unit (3); the frequency converter (2.2) controls the operating frequency of the oil pumping unit (3).

2. The oil production control device for a pumping unit according to claim 1 is characterized in that: The pumping unit RTU (2.1) is connected to the main control circuit (1.1) using an RS232 transceiver.

3. The oil production control device for a pumping unit according to claim 2 is characterized in that: The controller (1) is powered by 24V as a whole, wherein the power supply circuit (1.2) converts the 24V into 3.3V and supplies power to the main control circuit (1.1).

4. The oil production control device for a pumping unit according to claim 3 is characterized in that: The power supply circuit (1.2) is composed of two chips, TPS5430DDA and AMS1 117-3.

3. TPS5430DDA is a step-down DC-DC power supply chip that reduces the 24V voltage to 5V; AMS1 117-3.3 is a linear regulator with an output of 3.3V, which converts the 5V voltage to 3.3V.

5. The oil production control device for a pumping unit according to claim 4 is characterized in that: The RS232 transceiver adopts ICL3232EIAZ-T, which has a data rate of 250Kbps and a power supply of 3V~5.5V, and is used to transmit the power diagram of the pumping unit RTU (2.1) and related electrical parameters.

6. The oil production control device for a pumping unit according to claim 5, characterized in that: The pumping unit RTU (2.1) communicates with the various sensors (2.1.1) via Zigbee.

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