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Updated: Aug 30, 2025

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Flow Pattern Identification of Oil-Water Two-Phase Flow Based on SVM Using Ultrasonic Testing Method.

Qian Su1,2, Jie Li1, Zhenxing Liu1,2

  • 1School of Information Science and Engineering, Wuhan University of Science and Technology, Wuhan 430081, China.

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|August 26, 2022
PubMed
Summary

This study introduces a novel ultrasonic method for accurately identifying oil-water flow patterns in pipelines. The combined approach achieves high accuracy, offering a reliable solution for multiphase flow monitoring.

Keywords:
SVMflow pattern recognitionoil–water two-phase flowreflected echoultrasonic attenuation

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Area of Science:

  • Fluid Dynamics
  • Acoustic Engineering
  • Chemical Engineering

Background:

  • Accurate identification of oil-water two-phase flow patterns is crucial for process control in the petroleum industry.
  • Traditional methods often face challenges in complex flow conditions, necessitating advanced monitoring techniques.

Purpose of the Study:

  • To develop and validate a hybrid ultrasonic method for precise identification of oil-water two-phase flow patterns in horizontal pipelines.
  • To compare the effectiveness of ultrasonic transmission attenuation and ultrasonic reflection echo techniques, individually and in combination.

Main Methods:

  • Utilized the finite element method to create 2D geometric simulation models of various oil-water flow patterns.
  • Employed multiphysics coupling simulation technology for realistic flow pattern modeling.
  • Constructed an ultrasonic transducer test system for experimental validation in a 50 mm diameter pipeline.
  • Applied ultrasonic transmission attenuation and ultrasonic reflection echo principles, integrating support vector machine (SVM) for data analysis.

Main Results:

  • The ultrasonic transmission attenuation method achieved 100% accuracy in identifying water-in-oil (W/O) and oil-in-water (O/W) dispersion flows.
  • The ultrasonic reflection echo method, using echo duration with SVM, demonstrated 95.45% accuracy for stratified and dispersed flow identification.
  • The combined ultrasonic approach proved highly accurate and effective for oil-water two-phase flow pattern identification.

Conclusions:

  • The integrated ultrasonic transmission attenuation and reflection echo method provides a robust and accurate solution for oil-water two-phase flow pattern recognition.
  • This research offers a valuable theoretical foundation for advancing flow pattern identification in liquid-liquid multiphase systems.
  • The developed method enhances monitoring capabilities, contributing to improved efficiency and safety in relevant industrial processes.