1. Development background:
The number of oil wells in oil fields is large and the distribution range is from tens to hundreds of square kilometers. The distribution is relatively scattered. At present, most of them use manual patrol wells, which regularly check the operation of equipment and record production data. This method will inevitably increase the labor intensity of workers and affect the real-time and even accuracy of equipment monitoring and oil recovery data. And when the pumping unit and electric pump fail, they cannot be found in time, and effective monitoring, prevention and control cannot be obtained.
The “Oil Well Remote Measurement and Control System” developed to effectively solve the above problems can monitor oil well parameters such as current, voltage, wellhead temperature, pressure, and dynamometer diagram in real time. , Pressure is too high and too low, overload when the polished rod is stuck, shutdown, phase loss, underload, etc.) real-time diagnosis, timely fault detection and alarm. Can remotely control the start and stop of the pumping unit. Query oil well operating parameters at any time, and realize remote parameter transmission and data resource sharing.
Second, the basic structure of the system:
The oil well remote measurement and control system is mainly composed of the wellhead monitoring terminal and the computer system of the monitoring center. Its function is to transmit the detected well state parameters to the real-time database server of the oil production plant through GPRS wireless mode through real-time detection of wellhead parameters, so that various production management departments can timely grasp the working state of the oil well and shorten the time of oil well fault handling. Increasing the time of well opening, increasing crude oil production, improving work efficiency, and providing a new method for fine management of pumping wells, it is an ideal oilfield production automation product.
System engineering equipment composition:
(1) Sensor components: tension sensor, angular displacement sensor, temperature sensor, pressure sensor, etc.
(2) Wellhead monitoring terminal: power supply module, acquisition module, GPRS transmission module.
(3) Monitoring center system software
(4) Monitoring center computer
3. System function:
The system mainly collects the parameters of three-phase voltage, current, active power, power factor, daily electricity consumption, accumulated power, oil well wellhead back pressure, wellhead temperature, polished rod load, dynamometer diagram, shutdown and other parameters of the pumping unit, and performs corresponding data Handling and storage.
(1) Alarm information is given to abnormal conditions such as pumping well shutdown, parameter overrun, sucker rod breakage, and sucker rod stuck.
(2) With data power-off protection function, it can save set parameters and historical data for a long time. Remotely control the over-load shutdown of the pumping unit, and start the control regularly.
(3) Remotely realize the parameter configuration and over-limit setting of the monitoring terminal.
(4) Automatically record the working process of the pumping unit, accumulate the start-up time and downtime, and save the historical information.
(5) With functions such as static data browsing and editing: including pumping unit model, configuration motor model, oil well number, stroke, line name, range, alarm upper and lower limits, oil well conditions, etc. Newly opened oil wells, deleted production wells, and modified basic data of operation wells.
(6) With real-time trend and historical trend monitoring functions of dynamometer graph, current graph (or power graph), current, voltage, temperature, pressure and other parameters, it can easily understand the long-term parameter changes and facilitate quick analysis.
(7) Introduce GIS geographic information management system, which can intuitively reflect the working conditions of oil wells in the entire oil area.
(8) The protection design can be made according to the needs of users.
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