Oil gas water multiphase flow type identification method based on main component analysis and supporting vector machine

A technology of support vector machine and principal component analysis, applied in the field of multiphase flow measurement, which can solve the problems of low flow pattern recognition rate and inability to fully reflect the flow pattern.
CN1904581AInactive Publication Date: 2007-01-31NORTHEAST DIANLI UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
NORTHEAST DIANLI UNIVERSITY
Publication Date
2007-01-31
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to an oil / gas / water multi-phase flow type identification method based on main constituent analysis and supporting vector machine. The feature is that: taking collection to flow parameter signal of different flow type by using horizontal tubes, pressure sampling ring, pressure sampling tube, pressure difference transmitter, data collection card and computer; taking denoising processing to pressure difference fluctuation signal between the collected different pressure sampling distance; taking empiric model decomposition to the signal to gain the fixed modal function, and forming a matrix X from the modal functions, using the main constituent analysis to gain the eigenvector of the flow type; using the supporting vector machine to accomplish the mapping from feature space to flow type space to realize the final flow type identification. The eigenvector fusing the information from plural sensors and would fully reflect the information of flow type. It has the feature of rapid learning speed and strong classifying ability.
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Description

technical field

[0001] The invention relates to the technical field of multiphase flow measurement, in particular to a flow pattern recognition method for oil-gas-water multiphase flow based on principal component analysis and support vector machines. Background technique

[0002] There are two types of traditional flow pattern identification methods: one is to use experimental methods to make flow pattern diagrams; the other is to use the flow parameters on site to determine the flow pattern based on the transformation criterion relational formula obtained from the analysis of the flow pattern transformation mechanism. . Because flow parameters are often the problem to be solved in actual production, traditional methods cannot be widely used.

[0003] The modern measurement methods of flow patterns can be divided into direct measurement and indirect measurement methods from the working principle. Commonly used direct measurement methods include visual inspection, high-spe...

Claims

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