I. Overview
The oil well information control system is a collection oil production control, monitoring and production management system developed by Beijing Century Changqiu Technology Co., Ltd., which is used in the oil extraction industry. The system is supported by computer network, wireless digital communication and industrial control technology. The system is a three-level station structure: the upper station provides remote measurement services, oil production analysis, network and data management for each element in the global scope; the relay station is responsible for data upload and release; The ground floor RTU implements the on-site data acquisition and control process and provides emergency response services. The system realizes online measurement of dynamometer diagram, current diagram, pressure and temperature, and realizes automatic oiling. The system is fully designed for the automation of oil field production, with a rational structure, strong scalability, and a high performance-to-price ratio.
Second, the system structure
Well information control system includes the following subsystems:
â– Pumping Unit Production Parameters Monitoring and Shipment Release System â– Metering Station Oil Well Automatic Downhole Metering System â– Injection Pump Station Automatic Monitoring and Regulation System â– Water Distribution Automatic Monitoring System â– Combined Station, Transfer Station Automation Measurement and Control System
The structural design diagram of the oil well information control system is as follows.
The central control room is a superior station. The higher level station completes the registration of all relay stations and remote terminal equipments, parameterization of oil and water well terminals and automatic metering under the jurisdiction of the metering stations, collection, management, storage, analysis and diagnosis of various types of monitoring and control information at the site, real-time control and monitoring of the underlying remote terminal.
The relay station is the middle layer of the system. It is a sub-station on the local area network, the next is the main station of the Ethernet Industrial Control Network, complete the upload and release of orders, data collection and upload, the bottom layer of the terminal inspection and the middle layer of data preservation.
The RTU of pumping unit intelligent terminals, water injection terminals, and automatic metering terminals is the lowest level of the system. It completes on-line access, emergency processing, data transmission, and status feedback of well headhole dynamic data; online admission and fault alarm of injection well data; measurement Automatic data entry, emergency processing, and timely alarms. They can work independently, but can also accept the upper-level monitoring and control commands, and relay stations to form industrial Ethernet.
Third, the upper computer monitoring software
"Century Star Configuration Software" is an intelligent man-machine interface (MMI) software system developed on a PC. It uses Windows 98/2000/NT/XP Chinese as its operating system, full Chinese language interface, and makes full use of Windows. The various convenient features.
"Century Star Configuration Software" consists of a development system and an operating system. The development system is the integrated development environment of Centurystar Configuration Software. The software developer completes the interface design, database definition, animation connection, hardware device installation, network configuration, and system configuration in this environment. The system has advanced and complete graphics generation functions; there are multiple data types in the database, which can not only reasonably abstract the control objects, but also can operate data alarms, trend curves, historical data records, and security precautions very simply and conveniently. Developers can use their rich graphical controls and custom gallery features to greatly reduce the time spent designing the interface. With a simple and practical programming command language, developers can design actual projects without programming experience; convenient hardware installation Guide and comprehensively support the domestic and international industrial control bottom equipment, and completely realize the data acquisition and monitoring functions of the industrial control site.
The running system is the real-time running environment of the “Century Star Configuration Software†system, which is used to display the animated graphic pictures created in the development system and is responsible for the data exchange between the database and hardware devices. The operating system can reflect all parameters and actual conditions of the site in real time and vividly; collect various data from industrial control objects through real-time database management; visualize the changes of the data in an animated manner, and complete real-time and historical alarms at the same time. Historical data records, real-time and historical trend curves and other monitoring functions; can generate historical data files for retrieving historical events; flexible and convenient configuration reports can fully meet the user's various reporting needs.
Fourth, the process
(1) Home screen
Pumping wells require the following functions:
1. Automatically monitor the working voltage and current of the pumping unit to achieve automatic protection against over-voltage, under-voltage, over-current, under-current, and phase loss;
2, real-time monitoring wellhead oil pressure, pressure, temperature;
3, real-time or regular measurement of power chart, to achieve automatic protection over the limit;
4, real-time or regular measurement of the current diagram;
5. Measure the missing plot of Verr;
(2) Overview of Data Collection at Oil Transfer Stations
Requires the following functions:
1, real-time monitoring of water injection flow;
2, real-time monitoring of water injection pressure and pump outlet pressure.
3, the needs of the central control room induction
The central control room requires the following functions:
1. Real-time display of remote terminal equipment monitoring and control information;
2. All kinds of measurement and control instructions are issued in real time;
3, the collection of data stored in the database;
4. Process data in the form of graphs, trends, and tables.
5, induction of communication needs
The wellhead and metering station data of pumping wells are transmitted to the central control room in a wireless manner. Through the internal LAN, Web browsing of plant data can be implemented.