井筒水包油乳状液微波谐振传感器持水率测量方法研究

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摘要本文介绍了一种微波谐振传感器水包油乳状液持水率的测量方法。通过HFSS 仿真软件对电极张角和电极长度进行了优化分析。借助矢量网络分析仪对实物传感器进行静态标定实验，分析了持水率在80%~100%范围内水包油乳状液的谐振频率分布。此外，通过光学显微镜观察分析了乳化状态下微米级油泡结构。在此基础上，开展了垂直上升高含水低流速水包油乳状液动态实验，实时测取了不同流动工况下的微波谐振传感器的幅值S21 响应曲线，分析了谐振频率随含水率变化的实验关系。结果表明，在2.2 GHz~2.8 GHz 频率范围内，谐振传感器对高含水水包油乳状液的含水率测量平均分辨率为0.096%。

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关键词：水包油乳状液持水率测量高含水微波谐振传感器

Abstract： In this study, we propose a new method for water holdup measurement of oil-inwater emulsions with a microwave resonance sensor (MRS). The angle and length of the electrode plate are optimized by HFSS simulation software. Using a vector network analyzer (VNA), a static calibration experiment is conducted, and the resonant frequency distribution of oil-in-water emulsions is analyzed within an 80%–100% water holdup range. In addition, we observe and analyze the micron-sized oil bubble structure in the emulsifi ed state with an optical microscope. On this basis, a dynamic experiment of oil-in-water emulsions with high water cut and low velocity in a vertical upward pipe is conducted. S21 response curves of the MRS are obtained by the VNA under diff erent working conditions in real time. Finally, we analyze the relationship between the resonant frequency and water cut. Experimental results show that the MRS has an average resolution of 0.096% water cut for high water cut oil-inwater emulsions within the frequency range of 2.2–2.8 GHz.

Key words： oil-in-water emulsions water holdup measurement high water cut microwave resonance sensor

收稿日期: 2020-05-31;

基金资助:

本研究项目由国家自然科学基金项目（编号：42074142, 51527805）资助。

通讯作者: 任英玉（Email: renyingyuee@tju.edu.cn） E-mail: renyingyuee@tju.edu.cn

作者简介: 金宁德，1997 年毕业于浙江大学，获测试计量技术及仪器专业工学博士学位。2002 年以来，任职天津大学电气自动化与信息工程学院教授，博士生导师。现为《FlowMeasurement andInstrumentation》、《AppliedGeophysics》期刊编委。研究方向为井孔地球物理方法及多相流检测技术。E-mail: ndjin@tju.edu.cn.

引用本文:

. 井筒水包油乳状液微波谐振传感器持水率测量方法研究[J]. 应用地球物理, 2021, 18(2): 185-197.

. Measurement of water holdup in oil-in-water emulsions in wellbores using microwave resonance sensor[J]. APPLIED GEOPHYSICS, 2021, 18(2): 185-197.