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Method for pumping well fault diagnosis based on pump indicator diagram

A technology of fault diagnosis and pump power diagram, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as difficult to obtain learning samples, difficult to judge samples to be diagnosed, etc.

Active Publication Date: 2017-01-11
SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the invisibility of underground working conditions, it is difficult to obtain enough learning samples, and it is difficult to accurately judge the samples to be diagnosed from the existing information

Method used

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  • Method for pumping well fault diagnosis based on pump indicator diagram
  • Method for pumping well fault diagnosis based on pump indicator diagram
  • Method for pumping well fault diagnosis based on pump indicator diagram

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0243] surface 1 The value range of each feature element under each fault subset is given in , where the fault types 1-15 represent "normal operation", "gas influence", "insufficient liquid supply", "sucker rod breakage", "Oil Thickness", "Swimming Valves", "Pump Up", "Pump Down", "Fixed Valves", "Plunger Out of Mandrel", "Air Lock", "Double Valves" ", "Pump Stuck", "Oil Well Sanding", "Wax Deposition".

[0244] surface 1 Feature element intervals of various fault types

[0245]

[0246]

[0247] Let the fault level be F={F 1 , F 2 ,…F 15}, the characteristics of each fault subset are: c={c 1 ,c 2 ,... c 15}. The matter-element model for constructing a fault subset is as follows:

[0248]

[0249]

[0250] Given the sample to be diagnosed, extract the invariant curve moment feature of the sample to be diagnosed as table 2 Shown:

[0251] surface 2 Invariant curve moment eigenvector of the sample to be diagnosed

[0252]

[0253] The matter-...

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Abstract

The invention relates to a method for pumping well fault diagnosis based on a pump indicator diagram. The method comprises the steps that ground indicator diagrams are collected and converted into the pump indicator diagram; and the fault diagnosis is conducted to the obtained pump indicator diagram. The method provided by the invention is designed based on deep understanding of working principles of rod pumping system, and is highly comprehensive and practical; the method can be effectively applicable to different well situations; and the ground indicator diagrams collected by a WIA-PA wireless indicator can be used efficiently and accurately for the fault diagnosis of the rod pumping system.

Description

technical field [0001] The invention relates to the fields of petrochemical industry and wireless sensors, in particular to a method for displaying work on the ground picture converted to pump work picture and fault diagnosis method. Background technique [0002] Petroleum, as a non-renewable resource, is nation China's political, economic and military has irreplaceable strategic significance. With the continuous, stable and rapid development of my country's economy, oil consumption also continues to grow, and the demand for crude oil continues to rise. The gap between oil supply and demand has a tendency to increase, and has gradually become one of the important factors restricting my country's economic development. As of the end of 2009, PetroChina's proven remaining recoverable reserves were 2.79 billion tons, and the reserve-production ratio of remaining recoverable reserves was 14.8. However, among these remaining recoverable reserves, the quality of oil resource re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/009G06F19/00
Inventor 于海斌曾鹏尚文利李世超郑东梁
Owner SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
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