CN202443311U - Automatic test and regulation monitoring system for oilfield water injection well - Google Patents

Abstract

The utility model relates to an automatic measurement and adjustment monitoring system for water injection wells in oil fields. , motor, intelligent control valve, RTU, serial port expansion circuit, GPRS module, upper computer, remote control terminal, position switch, wireless pressure transmitter, photoelectric isolator, power management module, alarm system, flow meter, RTU respectively It is connected with the control host, and the photoelectric isolator, D/A converter, motor, and intelligent control valve are connected in sequence, the serial port expansion circuit is connected with the RTU, the GPRS module and the upper computer are respectively connected with the serial port expansion circuit, and the detection and processing data are passed through the GPRS module to the remote control terminal. The utility model adopts a single-chip microcomputer to collect the data of the control box of the field equipment, and sends the data to the GPRS module at regular intervals, so as to monitor the operation status of the water injection station in a timely, accurate and real-time manner.

Description

Oilfield Water Injection Well Automatic Measurement and Adjustment Monitoring System

technical field

The utility model belongs to the field of monitoring and security, in particular to an automatic measurement and adjustment monitoring system for water injection wells in oil fields. the

Background technique

For a long time, the production of water injection wells has been manually adjusted to control the water injection volume of a single well. Due to the scattered distribution of water injection wells and the complex environment, it is so difficult to ensure the normal operation of the first-line production equipment and the effective collection of production data. In order to effectively cooperate with the simplification of the oilfield surface system, our company has developed an automatic measurement and adjustment monitoring system for oilfield water injection wells. The water injection volume and the flow rate measured by the flow meter on site can be automatically closed-loop to adjust the valve opening to complete the automatic adjustment of the flow rate, which overcomes various disadvantages of water injection well measurement, water volume control and production management in the traditional mode, and realizes the operation status of the water injection well. Automatic monitoring, automatic collection of basic production data and wireless remote control have improved the automatic management level of water injection wells. the

Contents of the invention

The purpose of this utility model is to overcome the various disadvantages of water injection well measurement, water volume control and production management in the traditional mode in the past, realize automatic monitoring of water injection well operation status, automatic collection of production basic data and wireless remote control, and improve The automatic management level of water injection wells has laid the foundation for the optimization of automatic configuration of ground water injection in the later stage. the

The utility model solves its technical problem and realizes by taking the following technical solutions:

It consists of wireless pressure transmitter, photoelectric isolator, power management module, control host, alarm system, flow meter, D/A converter, motor, intelligent control valve, RTU, serial port expansion circuit, GPRS module, host computer, remote Control terminal, position switch, wireless pressure transmitter, photoelectric isolator, power management module, alarm system, flow meter, RTU are connected to the control host, photoelectric isolator, D/A converter, motor, intelligent control valve Connected in turn, the serial port expansion circuit is connected to the RTU, the GPRS module and the host computer are respectively connected to the serial port expansion circuit, and the data detected and processed is transmitted to the remote control terminal through the GPRS module.

Moreover, the control host adopts a cost-effective ultra-low power consumption MSP430 series single-chip microcomputer. the

Moreover, the GPRS module adopts MC35, which has a standard industrial interface and a complete SIM card memory. the

Moreover, the power management module is composed of a solar cell group, a solar controller and a storage battery, and the storage battery is a lead-acid battery. the

The advantages and positive effects of the utility model are:

1. The utility model adopts the GPRS module to wirelessly transmit the wellhead data to the background server for processing and publishing, and solves the problem of long-distance collection and monitoring of the wellhead production parameters.

2. The utility model adopts full digital calibration technology, removes the adjustable device, improves the measurement accuracy and reliability of the equipment, and provides great convenience for the later maintenance of the equipment. the

3. This utility model adopts the design concept of "micro power consumption" to reduce the static power consumption of the system, prolong the battery power supply time, and improve the service life of the battery. According to the test results, the injection well can work for more than 4 days completely relying on the discharge of the battery , a test was carried out on the ground water distribution and injection well of a certain well, and the running time was 09-03-02 16:24-09-03-07 05:25. The wireless pressure transmitter is powered by a disposable battery, which is reliable and durable, and disposable Battery, small self-consumption, large capacity, low failure rate, easy to use for a long time, adopts micro-power consumption programming and precise power management technology, the design service life of the wireless pressure transmitter battery is to send data every half an hour, which can reach more than 3 years . the

4. The utility model overcomes various disadvantages of water injection well measurement, water volume control and production management in the traditional mode in the past, realizes automatic monitoring of water injection well operation status, automatic collection of basic production data and wireless remote control, and improves injection well The level of automatic management of water wells has laid the foundation for the optimization of fully automatic configuration of ground water injection in the later stage. the

Description of drawings

Fig. 1 is a system connection block diagram of the utility model. the

Detailed ways

Below in conjunction with accompanying drawing, the utility model embodiment is described in further detail:

As shown in Figure 1, an automatic measurement and adjustment monitoring system for oilfield water injection wells described in the utility model consists of a wireless pressure transmitter, a photoelectric isolator, a power management module, a control host, an alarm system, a flow meter, a D/A Converter, motor, intelligent control valve, RTU, serial port expansion circuit, GPRS module, host computer, remote control terminal, position switch, wireless pressure transmitter, photoelectric isolator, power management module, alarm system, flow meter, The RTU is connected to the control host, the photoelectric isolator, D/A converter, motor, and intelligent control valve are connected in sequence, the serial port expansion circuit is connected to the RTU, the GPRS module and the host computer are respectively connected to the serial port expansion circuit, and the detection and processing data are passed through The GPRS module is sent to the remote control terminal.

The structure and working principle of the utility model are shown in Figure 1. When the system is working, the current position of the valve stem detected by the displacement sensor, the pressure value detected by the wireless pressure transmitter, and the flow value measured by the flowmeter are input. The single-chip microcomputer displays the current displacement value in real time after A/D conversion. After obtaining these parameters, according to the set pressure upper and lower limit values and flow values, the internal control program of the single-chip microcomputer can determine the motor rotation through the PID algorithm. For the change of control quantity, for the convenience of debugging, the single chip microcomputer can be expanded into two serial ports through the serial port expansion circuit, one is connected to the GPRS module, and the other is connected to the upper computer. The collected data can be observed through the upper computer to see if it is correct. The web page remotely sets the daily water injection volume of the injection well, and the relevant information is sent to the RTU for identification and processing through the GPRS module. The legal command is sent to the control host by the RTU, and the control host uses the PID algorithm to automatically close the loop to adjust the valve opening. And the accumulated flow and other related data are transmitted to the RTU; the wireless pressure transmitter completes the measurement of various pressures and sends them to the control host through short-distance wireless communication and then to the RTU. The RTU will transfer the accumulated flow, instantaneous flow, dry pressure, oil pressure, The back pressure and other data are sent back to the remote control terminal through the GPRS network, and the real-time data and related reports are automatically generated on the remote control terminal and released through the LAN. Of course, the user can also point the GPRS to the computer designated by the customer for the user to perform local data query. ; The control host can adjust the flow rate according to the change of the main line pressure and the change of the daily net water injection volume, so that the daily water injection volume is more accurate. the

It should be emphasized that the embodiments described in the utility model are illustrative rather than restrictive, so the utility model is not limited to the embodiments described in the specific implementation, anyone skilled in the art according to the utility model Other implementations derived from the technical solution also belong to the protection scope of the present utility model. the

Claims (4)

1. An automatic measurement and adjustment monitoring system for oilfield water injection wells, characterized in that: it consists of a wireless pressure transmitter, a photoelectric isolator, a power management module, a control host, an alarm system, a flow meter, a D/A converter, a motor, an intelligent Control regulating valve, RTU, serial port expansion circuit, GPRS module, upper computer, remote control terminal, position switch, wireless pressure transmitter, photoelectric isolator, power management module, alarm system, flow meter, RTU are respectively connected to the control host , the photoelectric isolator, D/A converter, motor, and intelligent control regulating valve are connected in sequence, the serial port expansion circuit is connected to the RTU, the GPRS module and the host computer are respectively connected to the serial port expansion circuit, and the detection and processing data are transmitted to the remote control through the GPRS module terminal. 2. The automatic measurement and adjustment monitoring system for oilfield water injection wells according to claim 1, characterized in that: the control host adopts MSP430 series single-chip microcomputers with high cost performance and ultra-low power consumption. 3. The automatic measurement and adjustment monitoring system for oilfield water injection wells according to claim 1, characterized in that: the GPRS module adopts MC35, which has a standard industrial interface and a complete SIM card memory. 4. The automatic measurement and adjustment monitoring system for oilfield water injection wells according to claim 1, characterized in that: the power management module is composed of a solar cell group, a solar controller and a storage battery, and the storage battery is a lead-acid battery.

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