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Oil pumping unit well light condition monitoring device

A no-load state, monitoring device technology, applied in measuring devices, using electrical devices, measuring ultrasonic/sonic/infrasonic waves, etc., can solve problems such as inconvenience, and achieve the effects of wide application range, guaranteed accuracy, and energy-saving production benefits

Inactive Publication Date: 2013-07-10
UNIV OF SHANGHAI FOR SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, there are above-mentioned inconveniences and problems in the known pumping well no-load monitoring device

Method used

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  • Oil pumping unit well light condition monitoring device
  • Oil pumping unit well light condition monitoring device
  • Oil pumping unit well light condition monitoring device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] No-load state monitoring device for pumping well

[0025] see now figure 1 , figure 1 It is a block diagram of the monitoring device for the no-load state of the pumping well in the embodiment of the present invention. As shown in the figure, the pumping well no-load state monitoring device includes a vibration pickup link, a measurement line link and a signal processing and analysis link, and is characterized in that:

[0026] The vibration picking link includes a vibration detection part for the weak vibration signal and a part for amplifying the detected weak signal, wherein: a piezoelectric sensor is set in the vibration detection part of the weak vibration signal, and the piezoelectric sensor is based on the weak vibration signal. The change of the voltage signal of the corresponding change is generated; the amplification part of the detected weak signal is provided with a charge amplifier, and the charge amplifier outputs a high impedance;

[0027] The measurem...

Embodiment 2

[0030] Application method of no-load state monitoring device for pumping well

[0031] see now Figure 2 to Figure 5 , figure 2 It is a block diagram of a vibration sensor and a charge amplifier in an embodiment of the present invention, image 3 It is a block diagram of a bandpass filter group in an embodiment of the present invention, Figure 4 It is the embedded microprocessor wiring and functional block diagram of the embodiment of the present invention, Figure 5 It is a circuit diagram of the no-load state monitoring device for pumping wells according to the embodiment of the present invention.

[0032] The principle of the pumping well no-load state monitoring device of the present invention is as follows:

[0033] Although there are vibrations caused by various reasons in the pumping unit, each vibration has its own inherent vibration frequency. By detecting and comparing vibrations in different frequency ranges, it is possible to analyze whether the pumping unit ...

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PUM

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Abstract

An oil pumping unit well light condition monitoring device comprises a vibration pick-up link, a circuit measurement link and a signal processing analysis link. The oil pumping unit well light condition monitoring device is characterized in that the vibration pick-up link comprises a vibration detection part for weak vibration signals and a part used for amplifying detected weak signals. The circuit measurement link comprises a fractional frequency part for the signals in the vibration pick-up link, a control part for a band-pass filter band width, and a part processing fractional frequency signals. The signal processing analysis link comprises a reading part for signals from each channel and an analysis part for the signals from each channel. The oil pumping unit well light condition monitoring device has the advantages of being strong in capacity of resisting disturbance and good in secrecy and accurate in detection, thereby being suitable for popularization and application.

Description

technical field [0001] The invention relates to a monitoring device, in particular to a monitoring device for the no-load state of a pumping well. Background technique [0002] Among all kinds of artificial lift oil production, rod pumping ranks first, and electric submersible pump has also become one of the important means for high and stable production in oil fields. Because the downhole working conditions are complex and not easy to observe directly, it is necessary to take some measures to monitor the operating status of the pumping unit to ensure that the pumping unit can work normally. [0003] At present, there are effective monitoring methods for some other states in the operation process of the pumping well system, but there are still deficiencies in the no-load monitoring of the pumping well system. If the liquid level is lower than the suction port, there will be no-load phenomenon in the pipeline, which will cause the system to not work normally. From two aspec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01H11/08
Inventor 邬春学陈凯明
Owner UNIV OF SHANGHAI FOR SCI & TECH