基于电导法的油水两相流持水率测量系统设计  

Design of Water Holdup Measurement System for Oil-water Two-phase Flow Based on Conductivity Method

作　　者：冯亚男 魏勇[1] 甘如饴 陈强 刘国权 刘杰 FENG Yanan;WEI Yong;GAN Ruyi;CHEN Qiang;LIU Guoquan;LIU Jie(School of Electronic Information and Electrical Engineering,Yangtze University;China Petroleum Logging Co.Ltd.)

机构地区：[1]长江大学电子信息与电气工程学院 [2]中国石油集团测井有限公司

出　　处：《仪表技术与传感器》2024年第8期78-83,共6页Instrument Technique and Sensor

基　　金：湖北省自然科学基金面上项目(2022CFB187);中国石油天然气集团有限公司科学研究与技术开发项目(2022ZS04);中国石油集团油田技术服务有限公司科学研究与技术开发项目(2023T-002-001)。

摘　　要：针对传统电导法测持水率存在测量电路复杂的问题,设计了一种精简可靠的油水两相流持水率测量系统。该系统使用分压电路检测电导传感器的电压信号,并通过精密全波整流电路将该信号转换成与持水率相关的直流信号,简化了测量电路。同时结合多路复用模块与传感器阵列实现了对持水率的多点检测,提高了检测范围。实验结果表明:该系统的输出电压与持水率之间展现出良好的相关性,当持水率为50%~90%时,灵敏度至少可达0.021 V/%;当持水率为90%~100%时,灵敏度达到最大值0.131 V/%,表明其在高含水状态下持水率检测具有较好的适用性。A simplified and reliable oil-water two-phase flow water holdup measurement system was designed to address the issues of complex measurement circuits in traditional conductivity methods.The system employed a voltage divider circuit to detect voltage signals from the conductance sensor,and converted the signal into a DC signal related to the water holdup via a precision full-wave rectifier circuit,which simplified the measurement circuit.Moreover,the integration of a multiplexing module and sensor array enabled multi-point detection of water holdup,expanding the detection range.The experimental results show that the output voltage of the system shows a good correlation with the water holdup.When the water holdup is 50%~90%,the sensitivity can reach at least 0.021 V/%.When the water holdup is 90%~100%,the sensitivity reaches the maximum value of 0.131 V/%,highlighting its excellent suitability for water holdup detection in high-water-content environments.

关 键 词：电导法 持水率 油水两相流 电导传感器 

分 类 号：TN710[电子电信—电路与系统] P631[天文地球—地质矿产勘探]