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Indicator diagram recognition method based on regularized attention convolutional neural network

A convolutional neural network and attention technology, applied in the field of intelligent diagnosis system of pumping unit working condition, can solve the problem of low recognition accuracy of dynamometer diagram

Active Publication Date: 2019-08-23
NORTHEAST GASOLINEEUM UNIV
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  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide the dynamometer recognition method based on regularized attention convolutional neural network, which is used to solve the problem that the dynamometer recognition accuracy of common neural network and existing convolutional neural network is low

Method used

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  • Indicator diagram recognition method based on regularized attention convolutional neural network
  • Indicator diagram recognition method based on regularized attention convolutional neural network
  • Indicator diagram recognition method based on regularized attention convolutional neural network

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Embodiment

[0140] 10 common operating conditions of the needle pumping unit of the present invention are identified. These operating conditions include normal, fixed valve leakage, floating valve leakage, rod breakage, sanding, waxing, piston bumping against the pump, piston ejection, and gas influence , Insufficient liquid supply.

[0141] In terms of sample sets, this embodiment selects 25,963 indicator diagram samples of 40 pumping units in an oil mine in Daqing Oilfield, and the pumping unit operating conditions corresponding to each indicator diagram sample have been manually marked during the production process. In order to maintain sample balance, this embodiment performs data screening and enhancement on samples of fault conditions. The enhancement methods include displacement load offset, rotation, and translation. The final sample set contains a total of 18,500 samples of operating conditions. In the process of model training, 5-fold cross-validation is used, that is, the working ...

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Abstract

The invention relates to an indicator diagram identification method based on a regularized attention convolutional neural network, which comprises the following steps of: 1, establishing a data preprocessing module, and carrying out dimension and grey-scale map processing on a working condition sample set of an oil pumping unit; 2, establishing a regularized attention convolution module, and reinforcing, inhibiting and inactivating the autonomously learned convolution features; 3, embedding the regularized attention convolution module into the convolutional neural network to form a regularizedattention convolutional neural network; 4, establishing an indicator diagram recognition module, and inputting the gray level image of the indicator diagram into the regularized attention convolutional neural network for recognition; 5, establishing an attention loss function, and training a regularized attention convolutional neural network model; 6, inputting the oil pumping unit working condition data collected in real time into the indicator diagram recognition model, and repeating the steps 2-4; 7, taking the indicator diagram identification method based on the RA-CNN as a core, and constructing an intelligent diagnosis system of the working condition of the oil pumping unit. The identification precision of the indicator diagram can be effectively improved.

Description

[0001] 1. Technical Field: [0002] The invention relates to an intelligent diagnosis system for pumping unit working conditions, and specifically relates to an indicator diagram recognition method based on a regularized attention convolution neural network. [0003] 2. Background technology: [0004] In the oil production process of the oil field, the indicator diagram is a closed continuous curve composed of the load and displacement of the reciprocating movement of the donkey head of the pumping unit. It contains rich device status information, which can reflect the gas, oil, water and sand in real time. The influence of factors in wells such as, wax, etc. on the working condition of the pumping unit, so the analysis and identification of the indicator diagram is an important means of diagnosis of the working condition of the pumping unit. Due to the large number of pumping units and the frequent collection of displacement and load data, manual analysis methods are difficult to mo...

Claims

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Application Information

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IPC IPC(8): G06K9/62G06K9/32G06N3/04
CPCG06V10/25G06N3/045G06F18/214
Inventor 刘志刚宋考平杨二龙刘显德刘贤梅杜娟
Owner NORTHEAST GASOLINEEUM UNIV
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