Pumping well monitoring system and monitoring method

Abstract

The invention discloses a pumping well monitoring system and a monitoring method. The monitoring system comprises a monitoring device, a pumping unit and an electric motor. The monitoring device comprises a microprocessor module, a memory, a motor controller and a pumping well detection module. An input end of the microprocessor module is connected with a data acquisition unit and a parameter setting unit, and an output end of the microprocessor module is connected with a liquid crystal display screen, an early warning device and a balance block adjustment instruction unit. The monitoring method includes a first step of obtaining the fault sample; a second step of judging whether the pumping well is working properly; a third step of judging whether the pumping unit is balanced; a fourth step of calculating and synchronously outputting the efficiency of the pumping well system and the power consumption by lifting one ton of liquid to 100m. According to the invention, the system and method have the advantages of simple structure, reasonable design, easy operation, full function and good use effect, and the pumping well fault diagnosis, the pumping unit balanced state and the efficiency of the pumping well system can be timely and accurately monitored.

Description

technical field [0001] The invention belongs to the technical field of pumping well monitoring, and in particular relates to a pumping well monitoring system and a monitoring method. Background technique [0002] Nowadays, mechanical oil extraction is the main mining method used in my country's oil extraction. The mechanical oil extraction wells in China account for more than 90% of all pumping wells. The current mechanical oil recovery mainly includes rod pumps, rodless pumps, and gas lift. And other pumping systems, among them, rod pump pumping system is the main mechanical oil recovery method in mechanical oil recovery. Rod pump wells account for about 90% of mechanical pumping wells, and production accounts for more than 75%. With the development of science and technology With the continuous increase of production scale, our oil production is also increasing, and the rod pump pumping system is developing towards low energy consumption and high efficiency. At the same time,...

AI Technical Summary

Problems solved by technology

[0005] Swimming valve leakage, severe leakage or failure of the floating valve, lagging opening of the swimming valve, lagging closing of the swimming valve, leakage of the fixed valve, serious leakage or failure of the fixed valve, blockage of the fixed valve, Simultaneous leakage of the movable valve and the fixed valve, leakage of the oil pipe, breakage of the oil pipe, bending of the oil pipe, breakage of the sucker rod, pump leakage, uniform corrosion of the pump barrel, groove in the middle of the pump barrel, insufficient liquid supply to the pump, insufficient filling of the pump, gas influence, Air lock, insufficient liquid supply, upper dead center collision, plunger collision, vibration load, large inertial load, too small gap between plunger and pump barrel, plunger out of pump barrel, plunger partly out of pump barrel, plunger not Faults such as complete entry into the pump barrel, sand stuck, wax stuck, stuck pump, gear wear, belt slippage, pumping and jetting, and packing box too tight, etc. Once the above accidents occur in the pumping well with rod pumps, it will cause the use of related equipment in the pumping well. The reduction of service life and production shutdown, and serious accidents such as damage to pumping well equipment and casualties of pumping well staff

[0006] (2) Unbalanced pumping unit in rod pump well system

[0007] During the working process of the pumping unit, there will be unbalanced problems of the pumping unit. When the pumping unit is unbalanced, it will cause the motor to do negative work, reducing the service efficiency and life of the motor; in addition, violent Vibration will shorten the life of the pumping unit; unbalanced pumping unit will also cause uneven swing up and down of the donkey head, thus affecting the normal work of the pumping unit and pump

[0008] (3) Efficiency and interval pumping time of rod pumped oil well system

However, these methods are complex and have low accuracy and effectiveness.

[0012] Second, at present, rod pump wells mainly use observation method and current measurement method to detect the balance of pumping units. Ensure that the pumping unit must be balanced

[0013] Third, in the process of oilfield exploitation, there are generally no relevant oil well dynamic liquid level detection devices and pumping well system efficiency detection devices at present, and the oil well liquid level and system efficiency cannot be obtained in time. Reasonable arrangements for interval pumping time include well shut-in time and production time , adjust the efficiency of the pumping well system, reduce energy waste and equipment loss

[0014] In addition, the various detection modules used in the current pumping well monitoring system are independent of each other, and cannot realize information fusion and comprehensive judgment. Therefore, a pumping well monitoring system and monitoring method are studied, which integrates pumping well fault diagnosis, pumping The efficiency of the oil well system is integrated to ensure the high efficiency, low power consumption and safe operation of the pumping well, and reduce energy waste and equipment loss, which is of great significance to the safe production of oil extraction

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