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Method and system for measuring speed of screw pump oil production well

A technology for speed measurement and oil production, which is used in pump control, construction, machine/engine, etc. It can solve the problems of inability to measure the loss of the motor itself, affecting the accuracy of speed measurement, and poor practicability. Easy operation and maintenance, high estimation accuracy

Active Publication Date: 2021-07-20
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 2. The motor speed measurement method cannot measure the loss of the motor itself, which affects the speed measurement accuracy;
[0007] In view of the problems of high investment and maintenance costs, poor implementability and unguaranteed accuracy in the current method of measuring the speed of screw pump oil production wells, etc.

Method used

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  • Method and system for measuring speed of screw pump oil production well
  • Method and system for measuring speed of screw pump oil production well
  • Method and system for measuring speed of screw pump oil production well

Examples

Experimental program
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Embodiment 1

[0062] figure 1 A flowchart showing the steps of a method for measuring the rotational speed of a screw pump oil production well according to the present invention.

[0063] The method for measuring the rotational speed of a screw pump oil production well according to an exemplary embodiment of the present invention includes:

[0064] Measure the real-time active power of the screw pump oil production well;

[0065] Discrete Fourier transform based on real-time active power;

[0066] Analyze and decompose based on the power spectrum after discrete Fourier transform;

[0067] Based on the analytical decomposition results, the rotational speed of the screw pump production well is obtained.

[0068] figure 2 It shows the measured electric power diagram of the screw pump according to an exemplary embodiment of the present invention. image 3 Shown is the power spectrum of the actual measured electric power diagram of the screw pump according to an exemplary embodiment of the...

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Abstract

The invention discloses a method and system for measuring the rotational speed of a screw pump oil production well, comprising: step 1, measuring the real-time active power of the screw pump oil production well; step 2, performing discrete Fourier transform based on the real-time active power; step 3, based on the discrete Fourier transform The power spectrum after Lie transform is analyzed and decomposed; step 4, based on the analysis and decomposition results, the speed of the screw pump production well is obtained. The advantages of the present invention are: by analyzing the electric power curve of the screw pump oil production well, real-time monitoring of the rotation speed of the screw pump well can be realized, and the estimation accuracy is high; the real-time monitoring of the rotation speed is conducive to the design of energy-saving and consumption-reducing measures; the safety of the present invention is high, practical It is more convenient to install, operate and maintain during application.

Description

technical field [0001] The invention relates to the field of petroleum exploitation, and more specifically, to a method and system for measuring the rotational speed of a screw pump oil production well. Background technique [0002] Due to the advantages of low equipment cost, simple ground facilities, low initial investment, convenient later maintenance, and high oil recovery efficiency, the screw pump oil extraction system has become one of the commonly used lifting methods in oil extraction. [0003] In screw pump oil production, the speed directly affects the efficiency and life of the pump. Different occasions, different working conditions, different structural parameters of the pump and different periods of the pump have different requirements for the characteristics of the pump. There are also different selections for the speed. If the selection is unreasonable, the advantages of high efficiency and energy saving of the screw pump cannot be brought into play. Therefor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B47/009F04C14/28
CPCE21B47/008F04C14/28
Inventor 姜家厅黄辉王军霞王晓港刘德生
Owner CHINA PETROLEUM & CHEM CORP
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