Ground measurement and control system

Abstract

The utility model relates to the technical field of oil field ground equipment, in particular to a ground measurement and control system which comprises an intelligent control center, a portable control terminal, an oil well injection allocation control unit and a power supply module, and the oil well injection allocation control unit comprises a main control unit, a power supply unit, a communication unit and a carrier communication module. The carrier communication module receives sensor collection data sent by the underground carrier module, the carrier communication module sends the sensor collection data to the main control unit, the main control unit communicates with the intelligent control center and the portable control terminal through the communication unit, and the power supply unit supplies power to the power supply unit and underground equipment. According to the utility model, two-way communication between the underground and the ground is realized through a carrier communication technology, and two-way transmission among the wellhead, the control center and the mobile terminal is realized in a wired or wireless manner.

Description

Technical Field

[0001] The utility model relates to the technical field of oilfield well equipment, in particular to a ground measurement and control system. Background Art

[0002] Oil is an important non-renewable resource and a source of energy for various fields such as industry, agriculture, military industry, aerospace industry, etc. Currently, artificial water injection is a common method of oil field exploitation. By injecting water into the exploited oil layer, the oil well can maintain the oil layer pressure and improve the efficiency of oil field exploitation.

[0003] At present, the real-time collection of parameters of the multi-layer water injection well allocation system mainly involves the accurate collection of three major parameters: temperature, pressure and flow. How to improve the intelligence of the system? The two-way transmission of information between the control center and the well can be achieved through wired means, and the automatic measurement and adjustment of the water injection well can be completed. However, the wiring is complicated and easy to damage.

[0004] In addition, water injection wells are generally located in the wild, and each well is far away from the remote monitoring center and the locations are relatively scattered. The use of wired communication technology is not only complicated in wiring, but also costly. Utility Model Content

[0005] The utility model provides a ground measurement and control system, which realizes two-way communication between the well and the surface through carrier communication technology, and realizes two-way transmission between the wellhead and the control center and the mobile terminal in a wired or wireless manner.

[0006] In order to achieve the purpose of the utility model, the technical solution adopted is: a ground measurement and control system, including an intelligent control center, a portable control terminal, an oil well injection control unit and a power module, the oil well injection control unit includes a main control unit, a power unit, a communication unit and a carrier communication module, the carrier communication module receives the sensor acquisition data sent by the downhole carrier module, the carrier communication module sends the sensor acquisition data to the main control unit, the main control unit communicates with the intelligent control center and the portable control terminal respectively through the communication unit, and the power unit supplies power to the power unit and the downhole equipment.

[0007] As an optimization solution of the utility model, the communication unit includes a serial port circuit, a WIFI circuit and a 5G circuit. The portable control terminal communicates with the main control unit through the serial port circuit, the WIFI circuit or the 5G circuit, and the intelligent control center communicates with the main control unit through the WIFI circuit or the 5G circuit.

[0008] As an optimization solution of the present utility model, the main control unit includes a microcontroller U4, and the microcontroller U4 is STM32F.

[0009] As an optimization solution of the utility model, the WIFI circuit includes an ESP8266 module, the RXD pin of the ESP8266 module is connected to the PB6 pin of the microcontroller U4, and the TXD pin of the ESP8266 module is connected to the PB7 pin of the microcontroller U4.

[0010] As an optimization solution of the present utility model, the 5G circuit adopts the SIM8200EA-M2 chip.

[0011] As an optimization solution of the present utility model, the carrier communication module is an ST8500 carrier communication module.

[0012] As an optimization solution of the utility model, the power supply unit includes a 5V to 3.3V power conversion circuit, and the 5V to 3.3V power conversion circuit includes a voltage stabilizing chip U11, a capacitor C8, a capacitor C11, a capacitor C13 and a capacitor C14, wherein the capacitor C8 and the capacitor C11 are connected in parallel between the 1st pin and the 3rd pin of the voltage stabilizing chip U11, and the capacitor C13 and the capacitor C14 are connected in parallel between the 4th pin of the voltage stabilizing chip U11 and the ground.

[0013] The utility model has positive effects: 1) The utility model applies carrier communication technology to oil wells, and has a high transmission rate, high real-time data transmission efficiency, and a low bit error rate for overall transmission;

[0014] 2) The utility model completes the circuit and design of the downhole injection terminal and the uphole injection control unit, avoids the laying of additional communication cables, and realizes the real-time monitoring, closed-loop control, long-distance transmission and short-distance transmission functions of the water injection system. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0016] Figure 1 It is the overall structural diagram of the utility model;

[0017] Figure 2 It is a principle block diagram of the communication unit of the utility model;

[0018] Figure 3 It is the circuit principle diagram of the main control unit of the utility model;

[0019] Figure 4 It is a circuit schematic diagram of the 5G circuit of the utility model;

[0020] Figure 5 The utility model is a circuit principle diagram of a 5V to 3.3V power conversion circuit.

[0021] Among them: 1. Intelligent control center, 2. Portable control terminal, 3. Oil well injection control unit, 4. Power module, 331. Serial port circuit, 332. WIFI circuit, 333. 5G circuit. DETAILED DESCRIPTION

[0022] like Figure 1 As shown, the utility model discloses a ground measurement and control system, including an intelligent control center 1, a portable control terminal 2, an oil well injection control unit 3 and a power module 4. The oil well injection control unit 3 includes a main control unit 31, a power unit 32, a communication unit 33 and a carrier communication module 34. The carrier communication module 34 receives sensor acquisition data sent by the downhole carrier module, and the carrier communication module 34 sends the sensor acquisition data to the main control unit 31. The main control unit 31 communicates with the intelligent control center 1 and the portable control terminal 2 respectively through the communication unit 33, and the power unit 32 supplies power to the power unit 32 and the downhole equipment.

[0023] like Figure 2 As shown, the communication unit 33 includes a serial port circuit 331, a WIFI circuit 332 and a 5G circuit 333. The portable control terminal 2 communicates with the main control unit 31 through the serial port circuit 331, the WIFI circuit 332 or the 5G circuit 333, and the intelligent control center 1 communicates with the main control unit 31 through the WIFI circuit 332 or the 5G circuit 333.

[0024] like Figure 3 As shown, the main control unit 31 includes a microcontroller U4, and the microcontroller U4 is STM32F103RET6.

[0025] The WIFI circuit 332 includes an ESP8266 module, the RXD pin of the ESP8266 module is connected to the PB6 pin of the microcontroller U4, and the TXD pin of the ESP8266 module is connected to the PB7 pin of the microcontroller U4. The main frequency is 80MHz, supports TCP / UDP protocol, supports three working modes such as STA, and saves energy during operation due to low working voltage and current.

[0026] 5G circuit 333 uses SIM8200EA-M2 chip. This chip supports 5G NSA / SA data transmission up to 4.0Gbps and provides millisecond-level transmission delay. Its low delay, high bandwidth, and massive connection characteristics provide a guarantee for reliable and stable transmission. The specific circuit design is as follows Figure 4 The serial port circuit 331 can use RS485 or RS232 for serial communication.

[0027] The carrier communication module 34 is an ST8500 carrier communication module. The ST8500 carrier communication module uses OFDM modulation and demodulation in the physical layer and FEC coding technology in the transmission layer. The results show that it can achieve data transmission within 4 km underground, with a transmission rate of up to 34.5 kbps and a bit error rate of no more than 10 in oil wells and other harsh environments. -4 .

[0028] Since the main control unit 31, the power supply unit 32, the communication unit 33 and the carrier communication module 34 all use a 3.3V operating voltage, a 5V to 3.3V power supply needs to be provided. Figure 5 As shown, the power supply unit 32 includes a 5V to 3.3V power conversion circuit, and the 5V to 3.3V power conversion circuit includes a voltage stabilizing chip U11, a capacitor C8, a capacitor C11, a capacitor C13 and a capacitor C14. The capacitor C8 and the capacitor C11 are connected in parallel between the 1st pin and the 3rd pin of the voltage stabilizing chip U11, and the capacitor C13 and the capacitor C14 are connected in parallel between the 4th pin of the voltage stabilizing chip U11 and the ground.

[0029] When working, the downhole wave module sends the sensor collected data to the carrier communication module 34, the carrier communication module 34 receives the sensor collected data sent by the downhole wave module and sends it to the main control unit 31, the main control unit 31 communicates the sensor collected data with the portable control terminal 2 through the serial port circuit 331, the WIFI circuit 332 or the 5G circuit 333, and the intelligent control center 1 communicates with the main control unit 31 through the WIFI circuit 332 or the 5G circuit 333. When the portable control terminal 2 or the intelligent control center 1 needs to issue instructions, the above process is reversed.

[0030] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A ground measurement and control system, characterized in that: The invention comprises an intelligent control center (1), a portable control terminal (2), an oil well injection control unit (3) and a power module (4); the oil well injection control unit (3) comprises a main control unit (31), a power unit (32), a communication unit (33) and a carrier communication module (34); the carrier communication module (34) receives sensor acquisition data sent by an in-well carrier module; the carrier communication module (34) sends the sensor acquisition data to the main control unit (31); the main control unit (31) communicates with the intelligent control center (1) and the portable control terminal (2) respectively through the communication unit (33); and the power unit (32) supplies power to the power unit (32) and downhole equipment.

2. A ground measurement and control system according to claim 1, characterized in that: The communication unit (33) comprises a serial port circuit (331), a WIFI circuit (332) and a 5G circuit (333); the portable control terminal (2) communicates with the main control unit (31) via the serial port circuit (331), the WIFI circuit (332) or the 5G circuit (333); and the intelligent control center (1) communicates with the main control unit (31) via the WIFI circuit (332) or the 5G circuit (333).

3. A ground measurement and control system according to claim 2, characterized in that: The main control unit (31) comprises a microcontroller U4, and the microcontroller U4 is STM32F.

4. A ground measurement and control system according to claim 3, characterized in that: The WIFI circuit (332) includes an ESP8266 module, the RXD pin of the ESP8266 module is connected to the PB6 pin of the microcontroller U4, and the TXD pin of the ESP8266 module is connected to the PB7 pin of the microcontroller U4.

5. A ground measurement and control system according to claim 4, characterized in that: The 5G circuit (333) uses a SIM8200EA-M2 chip.

6. A ground measurement and control system according to claim 5, characterized in that: The carrier communication module (34) is an ST8500 carrier communication module.

7. A ground measurement and control system according to claim 6, characterized in that: The power supply unit (32) comprises a 5V to 3.3V power conversion circuit, which comprises a voltage stabilizing chip U11, a capacitor C8, a capacitor C11, a capacitor C13 and a capacitor C14, wherein the capacitor C8 and the capacitor C11 are connected in parallel between the first pin and the third pin of the voltage stabilizing chip U11, and the capacitor C13 and the capacitor C14 are connected in parallel between the fourth pin of the voltage stabilizing chip U11 and the ground.

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