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Screw pump producing well rotation speed measuring method and system

A technology for speed measurement and oil production, which is applied in pump control, machine/engine, mechanical equipment, etc. It can solve problems such as poor practicability, unguaranteed accuracy, and affect the accuracy of speed measurement, and achieve high estimation accuracy, high safety, The effect of convenient operation and maintenance

Active Publication Date: 2018-11-13
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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  • Screw pump producing well rotation speed measuring method and system
  • Screw pump producing well rotation speed measuring method and system
  • Screw pump producing well rotation speed measuring method and system

Examples

Experimental program
Comparison scheme
Effect test

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 screw pump production wells;

[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 presen...

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Abstract

The invention discloses a screw pump producing well rotation speed measuring method and system. The screw pump producing well rotation speed measuring method comprises the steps that step 1, real-timeactive power of a screw pump producing well is measured; step 2, discrete Fourier transform is carried out based on the real-time active power; step 3, analysis and decomposition are carried out based on a power spectrum after the discrete Fourier transform; and step 4, the rotation speed of the screw pump producing well is obtained based on the analysis and decomposition result. The screw pump producing well rotation speed measuring method and system have the advantages that by analyzing an electric power curve of the screw pump producing well, real-time monitoring of the rotation speed of the screw pump well can be realized, and the estimation accuracy is high; monitoring of the rotation speed in real time is beneficial to designing energy saving and consumption reducing measures; and the safety is high, and installation, operation and maintenance are convenient during practical 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 Applications(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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