Intelligent information acquisition and management system for underground lifting device on unmanned oil production site

Abstract

The utility model belongs to the technical field of oil exploitation, and particularly relates to an intelligent information acquisition management system for an underground lifting device on an unmanned oil exploitation site, which is characterized by comprising a power supply module, a measurement module, a main control module, a carrier signal coupling module, an interface module, a remote transmission and remote control module and a protective shell, the remote transmission and remote control module is connected with the interface module, the interface module is connected with the main control module, the carrier signal coupling module is connected with the main control module, the measurement module is connected with the main control module, the power supply module supplies power to the whole communication system, and the protective shell provides protection for a circuit system in an underground high-pressure and easily-corroded severe environment. According to the underground lifting device, unmanned management is achieved through an oil extraction site of the underground lifting device, measurement information of underground parameters is mastered at any time, the running speed of the underground lifting device is adjusted according to the oil outlet amount of a wellhead, and compared with a traditional oil extraction site, labor and energy are saved, and the working efficiency of the underground lifting device is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil production, and in particular relates to an intelligent information collection and management system for an underground lifting device used for unmanned oil production sites. Background Art

[0002] Traditional oil extraction uses pumping units, commonly known as "knocking machines", but with the continuous increase in the number of horizontal wells and wellheads with more complex structures, the efficiency of traditional oil extraction equipment has continued to decline, and traditional knocking machines are increasingly unable to meet the needs of modern oil extraction. Since the 1990s, oil extraction equipment has begun to use downhole lifting devices, which use linear motors to drive the oil pump to repeatedly lift the oil to the ground. The liquid production of oil wells using downhole lifting devices is twice that of traditional pumping units. By the 21st century, downhole lifting devices have experienced a blowout growth.

[0003] However, at present, most underground lifting devices are mechanical extraction and production, and the underground working conditions and oil penetration conditions cannot be mastered; on the other hand, many oil wells are located in remote areas, and it is extremely inconvenient for workers to live at the mining site. Therefore, in order to save oil extraction costs and improve oil extraction efficiency, a low-cost, high-efficiency information collection and management system is needed. Summary of the invention

[0004] The purpose of the utility model is to provide an intelligent information collection and management system for a downhole lifting device at an unmanned oil production site, so as to realize remote control and information transmission at the oil production site.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] The utility model is an intelligent information collection and management system for an unmanned underground lifting device in an oil production site, characterized in that it includes a power module, a measurement module, a main control module, a carrier signal coupling module, an interface module, a remote transmission and remote control module and a protective shell, a power control machine and an S7-200SMART linear motor submersible pump control logic, wherein the remote transmission and remote control module is connected to the interface module, the interface module is connected to the main control module, the carrier signal coupling module is connected to the main control module, the measurement module is connected to the main control module, the power module supplies power to the entire communication system, and the protective shell provides protection for the circuit system in the harsh environment of underground high pressure and easy corrosion. The linear motor submersible pump control logic monitors the working condition of the entire system.

[0007] The measuring module measures the downhole ambient temperature, pressure, motor internal temperature, motor movement vibration, power cable terminal voltage, motor current and oil penetration rate.

[0008] According to the above technical solution, preferably, the power control machine can control and display the linear motor submersible pump control logic mainly for the human-computer interaction interface based on the S7-200SMART linear motor submersible pump control logic, display the setting of up and down frequency, setting of stroke, incoming voltage, output voltage, DC bus voltage, motor output power, motor linear speed, downhole temperature, downhole pressure, downhole vibration and rotor position and other information; it can control the frequency converter after the logic control program is converted. The instructions include: automatic operation, stop, manual up, manual down, reset and emergency stop, etc.

[0009] According to the above technical solution, preferably, the power control machine can transmit the switch quantity status data to the interactive interface through the S7-200SMART linear motor submersible pump control logic control program, including: frequency converter, PLC, lighting, socket, heating fan, cooling fan, carrier board, HMI, switch and remote terminal device switch quantity.

[0010] According to the above technical solution, preferably, the power control machine can transmit the network topology status data to the human-computer interaction interface based on the S7-200SMART linear motor submersible pump control logic, including: human-computer interaction interface, carrier board, remote terminal and inverter communication status.

[0011] According to the above technical solution, preferably, the power control machine can transmit the actual uplink and downlink data to the human-computer interaction interface through the S7-200SMART linear motor submersible pump control logic control program to present the parameter curve, including the uplink frequency, the downlink frequency, the uplink current and the downlink current.

[0012] According to the above technical solution, preferably, the power control machine can transmit the data to be archived to the interactive interface through the S7-200SMART linear motor submersible pump control program.

[0013] According to the above technical solution, preferably, the power control machine transmits the control instructions to the main control module, and controls the frequency converter after conversion by the logic control program. The instructions include: motor parameter setting, motor stroke setting, fault limit setting, automatic start-up on power-on, and downhole equipment monitoring setting.

[0014] The remote transmission and remote control module receives instructions from the control center through 4G transmission technology, and feeds back downhole parameter information and on-site working conditions to the control center.

[0015] The interface module realizes data conversion between the main control module and the remote transmission and remote control module through two types of interfaces: RS485 and CAN.

[0016] The carrier signal coupling module uses a carrier chip to modulate the digital signal into a high-frequency analog carrier signal, and couples it to the power cable, decouples the high-frequency analog carrier signal from the power cable, demodulates it into a digital signal, and sends it to the main control module to achieve half-duplex communication.

[0017] The underground communication system is completely placed in the protective casing to prevent damage from the high pressure and hydrogen sulfide corrosive substances in the well.

[0018] The underground communication system placed in the protective shell uses high temperature resistant and low temperature drift components.

[0019] Advantages of the utility model:

[0020] The utility model is used for the intelligent information collection and management system of the downhole lifting device at the unmanned oil production site, which can realize the unmanned management of the oil production site and save a lot of manpower costs; by analyzing the collected downhole information parameters, the action rate of the downhole lifting device is controlled to avoid invalid work and extend the life of the downhole lifting device; when the parameters measured by the downhole equipment are not within the normal range, an alarm is issued or the equipment is shut down, and the alarm information is transmitted to the control center. Compared with the traditional oil production equipment, this system can meet the needs of high-efficiency and low-cost oil production. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the module connection of the well communication system of the utility model.

[0022] Figure 2 This is a schematic diagram of the module connection of the underground communication system of the utility model.

[0023] In the figure: 1. Power supply module; 2. Main control module; 3. Carrier signal coupling module; 4. Measurement module; 5. Interface module; 6. Remote transmission and remote control module; 7. Power cable. DETAILED DESCRIPTION

[0024] The specific implementation of the present utility model is further described below in conjunction with the accompanying drawings.

[0025] like Figure 1 , 2As shown, the utility model is an intelligent information collection and management system for an unmanned downhole lifting device at an oil production site, characterized in that it includes a power module 1, a measuring module 4, a main control module 2, a carrier signal coupling module 3, an interface module 5, a remote transmission and remote control module 6 and a protective shell, wherein the remote transmission and remote control module 6 is connected to the interface module 5, the interface module 5 is connected to the main control module 2, the carrier signal coupling module 3 is connected to the main control module 2, the measuring module 4 is connected to the main control module 2, the power module 1 supplies power to the entire communication system, and the protective shell provides protection for the circuit system in the harsh environment of high pressure and easy corrosion underground.

[0026] The measuring module 4 measures the downhole ambient temperature, pressure, motor internal temperature, motor movement vibration, power cable terminal voltage, motor current and oil penetration rate.

[0027] The remote transmission and remote control module 6 receives instructions from the control center through 4G transmission technology, and feeds back downhole parameter information and on-site working conditions to the control center to implement instructions such as starting, stopping, accelerating or decelerating the downhole lifting device.

[0028] The interface module 5 realizes data conversion between the main control module 2 and the remote transmission and control module 6 through two types of interfaces: RS485 and CAN.

[0029] The carrier signal coupling module 3 uses a carrier chip to modulate the digital signal into a high-frequency analog carrier signal and couples it to the power cable 7. No separate signal line is required. The high-frequency analog carrier signal is decoupled from the power cable 7, demodulated into a digital signal, and sent to the main control module 2 to achieve half-duplex communication.

[0030] The underground communication system is completely placed in the protective casing to prevent damage from the high pressure, hydrogen sulfide and other corrosive substances in the well.

[0031] The underground communication system placed in the protective shell uses high temperature resistant and low temperature drift components.

[0032] like Figure 1 and Figure 2As shown, the utility model includes a power module 1, a main control module 2, a carrier signal coupling module 3, a measurement module 4, an interface module 5, a remote transmission and remote control module 6, and a protective shell. The main control module 2 is a high temperature resistant processor that can work normally in the range of -55℃ to 125℃. The carrier signal coupling module 3 is composed of TI's THVD8000 chip, a coupling transformer, and a high-voltage isolation capacitor. The function is to couple the carrier signal to the power cable 7 and decouple the carrier signal in the power cable 7. The power supply voltage on the power cable 7 is a low-frequency sine wave (5Hz to 25Hz). Due to the effect of the isolation capacitor, the low-frequency signal cannot enter the carrier chip when receiving the signal, while the carrier signal is a high-frequency low-voltage signal, and the impedance on the isolation capacitor is small, so it can enter the carrier chip, thereby being demodulated by the carrier chip and restored to a conventional digital signal. The measurement module 4 collects downhole information parameters, and the sensors used are all high temperature resistant and can work normally in the range of -55℃ to 125℃. The interface module 5 is used to realize the data conversion between the main control module 2 and the remote transmission and remote control module 6. In this embodiment, it includes two forms, RS485 and CAN, both of which use high temperature resistant devices. The remote transmission and remote control module 6 is installed on the well to receive instructions from the control center and send downhole measurement parameters and various alarm information to the control center. The power module 1 supplies power to the entire communication system. The downhole communication system is completely placed in a protective shell to avoid damage from corrosive substances such as high pressure and hydrogen sulfide in the well.

[0033] The main functions of this utility model are:

[0034] At the control center, the on-site oil production equipment can be started and stopped through the remote control system, and the downhole lifting device can be accelerated or decelerated by remote operation. Various parameter indicators of the on-site working conditions can be monitored in real time. This process is realized through the remote transmission and remote control module of the well system.

[0035] When the system is operating normally, the downhole measurement module 4 collects downhole parameters such as ambient temperature, pressure, motor internal temperature, motor motion vibration, power cable terminal voltage, motor current, oil penetration rate, etc. through sensors and sends them to the main control module 2. The main control module 2 couples the information flow to the power cable 7 through the carrier signal coupling module 3. The uphole system also decouples the information flow into digital signals through the carrier signal coupling module 3 and sends them to the uphole main control module 2. After the main control module 2 determines that if the measured parameters are not within the normal range, an alarm or power-off protection is issued; the main control module 2 automatically adjusts the lifting rate of the downhole lifting device according to the speed of oil penetration. If the oil penetration rate is fast, the lifting rate of the downhole lifting device is accelerated to improve the oil production speed. If the oil penetration rate is slow, the lifting rate of the downhole lifting device is reduced to avoid wasting electric energy for useless work. Through feedback adjustment, the benefits of oil production are maximized.

[0036] The intelligent system can also be operated manually, and the uphole system sends information to the downhole system through the remote transmission and remote control module 6. After receiving the information, the downhole system completes the measurement task according to the instructions, and then feeds the measurement information back to the uphole system, and then transmits it back to the control center through the remote transmission and remote control module.

[0037] Through the above method, unmanned management can be achieved at the oil production site using the downhole lifting device, and at the same time, high-efficiency and low-cost oil production can be achieved.

[0038] The utility model is used for the intelligent information collection and management system of the downhole lifting device at the unmanned oil production site, which can realize the unmanned management of the oil production site and save a lot of manpower costs; by analyzing the collected downhole information parameters, the action rate of the downhole lifting device is controlled to avoid invalid work and extend the life of the downhole lifting device; when the parameters measured by the downhole equipment are not within the normal range, an alarm is issued or the equipment is shut down, and the alarm information is transmitted to the control center. Compared with the traditional oil production equipment, this system can meet the needs of high-efficiency and low-cost oil production.

Claims

1. An intelligent information collection and management system for underground lifting devices at unmanned oil production sites, characterized by: It includes a power supply module, a measuring module, a main control module, a carrier signal coupling module, an interface module, a remote transmission and remote control module and a protective shell. The remote transmission and remote control module is connected to the interface module, the interface module is connected to the main control module, the carrier signal coupling module is connected to the main control module, the measuring module is connected to the main control module, the power supply module supplies power to the entire communication system, and the protective shell provides protection for the circuit system in the harsh environment of high pressure and easy corrosion underground.

2. The intelligent information collection and management system for the underground lifting device for unmanned oil production site according to claim 1 is characterized in that: The measuring module measures the downhole ambient temperature, pressure, motor internal temperature, motor movement vibration, power cable terminal voltage, motor current and oil penetration rate.

3. The intelligent information collection and management system for the underground lifting device for unmanned oil production site according to claim 1 is characterized by: The remote transmission and remote control module receives instructions from the control center through 4G transmission technology, and feeds back downhole parameter information and on-site working conditions to the control center.

4. The intelligent information collection and management system for the underground lifting device for unmanned oil production site according to claim 1 is characterized by: The interface module realizes data conversion between the main control module and the remote transmission and remote control module through two types of interfaces: RS485 and CAN.

5. The intelligent information collection and management system for the underground lifting device for unmanned oil production site according to claim 1 is characterized in that: The carrier signal coupling module uses a carrier chip to modulate the digital signal into a high-frequency analog carrier signal, and couples it to the power cable, decouples the high-frequency analog carrier signal from the power cable, demodulates it into a digital signal, and sends it to the main control module to achieve half-duplex communication.

6. The intelligent information collection and management system for the underground lifting device for unmanned oil production site according to claim 1 is characterized in that: The underground communication system is completely placed in the protective casing to prevent damage from the high pressure and hydrogen sulfide corrosive substances in the well.

7. The intelligent information collection and management system for the underground lifting device for unmanned oil production site according to claim 1 or 6, characterized in that: The underground communication system placed in the protective shell uses high temperature resistant and low temperature drift components.

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