Vertical oil-water phase content measurement and verification method based on frequency complex network

A complex network and measurement method technology, applied in the field of two-phase flow measurement information fusion, can solve the problems of limited multivariate time series complex network research theory

Active Publication Date: 2014-09-17
TIANJIN UNIV
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Problems solved by technology

Great progress has been made in the research of univariate time series complex networks, but the research theory of multivariate time

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  • Vertical oil-water phase content measurement and verification method based on frequency complex network
  • Vertical oil-water phase content measurement and verification method based on frequency complex network
  • Vertical oil-water phase content measurement and verification method based on frequency complex network

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Embodiment Construction

[0046] The method for measuring and verifying the vertical oil-water phase holdup based on the frequency complex network of the present invention will be described in detail below in conjunction with the embodiments and the accompanying drawings.

[0047] The vertical oil-water oil content measurement method based on the frequency complex network of the present invention proposes a frequency complex network analysis method based on Fourier transform, and constructs a multivariate time series frequency complex network from the multivariate signals measured by the multi-electrode distributed conductance sensor. The search algorithm is used to study the internal correspondence between the network community structure and the local flow structure of different flow patterns at different frequencies to realize the identification of different oil-water flow patterns. Construct a series of frequency complex networks corresponding to different evolution stages of two-phase flow, and reve...

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Abstract

A vertical oil-water phase content measurement and verification method based on frequency complex network is as below: constructing a frequency complex network; calculating parameter measurement information of a vertical oil-water two-phase flow; mapping an average frequency clustering coefficient, an average frequency betweenness and a transitivity and oil content linearly relation measurement plate, so as to achieve the measurement of oil content of the vertical oil-water two-phase flow; and analyzing the dynamic relationship of average frequency clustering coefficient, average frequency betweenness and transitivity with flow pattern evolution according to the measurement plate, in order to reveal the flow pattern evolution dynamic mechanism of the vertical oil-water two-phase flow. The verification method employs a multi-electrode distributed conductance sensor for verification. The invention conducts information fusion on the measuring signals of the two-phase flow multi-electrode distributed conductance sensor; a multivariate time series frequency complex network information fusion method can effectively identify different flow patterns of the oil-water two-phase flow; and the multivariate time series frequency complex network information fusion method based on the multi-electrode distributed conductance sensor can realize good effect of phase content measurement.

Description

technical field [0001] The invention relates to a two-phase flow measurement information fusion method. In particular, it relates to a vertical oil-water phase holdup measurement and verification method based on frequency complex network for the measurement signal of vertical oil-water two-phase flow multi-electrode distributed conductance sensor. Background technique [0002] Two-phase flow phenomena widely exist in traditional and emerging industries such as petroleum engineering, chemical engineering, nuclear engineering, and aerospace engineering. In oil-water two-phase flow, the distribution of the two-phase interface presents different geometric shapes or flow structures, which are called two-phase flow patterns. Flow pattern is an important factor affecting the accurate measurement of flow parameters. The flow pattern of oil-water two-phase flow is complex and changeable, and the dynamic mechanism of flow pattern generation and evolution is extremely complicated, whi...

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Application Information

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IPC IPC(8): G01N27/06
Inventor 高忠科金宁德丁美双刘伟信
Owner TIANJIN UNIV
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