石油学报 ›› 2009, Vol. 30 ›› Issue (2): 308-311.DOI: 10.7623/syxb200902028

• 石油工程 • 上一篇    下一篇

注聚井中电磁流量计测量特性分析

金宁德1, 宗艳波1, 郑桂波1, 张玉辉2, 李军2   

  1. 1. 天津大学电气与自动化工程学院, 天津, 300072;
    2. 大庆油田测试技术服务分公司, 黑龙江大庆, 163412
  • 收稿日期:2008-03-03 修回日期:2008-06-06 出版日期:2009-03-25 发布日期:2010-05-21
  • 作者简介:金宁德,男,1963年3月生,1997年获浙江大学测试计量技术与仪器专业工学博士学位.现为天津大学教授,博士生导师,主要从事先进传感技术与现代信息处理技术融合方面的研究工作.E-mail:ndjin@tju.edu.cn
  • 基金资助:

    国家自然科学基金项目(No.50674070)资助

Measurement characteristics of electromagnetic flowmeter in polymer injection well

JIN Ningde1, ZONG Yanbo1, ZHENG Guibo1, ZHANG Yuhui2, LI Jun2   

  1. 1. School of Electrical Engineering and Automation, Tianjin University, Tianjin 300072, China;
    2. Daqing Logging and Testing Services Company, Daqing Oilfield Company, Ltd., Daqing 163412, China
  • Received:2008-03-03 Revised:2008-06-06 Online:2009-03-25 Published:2010-05-21

摘要:

基于计算流体动力学技术,计算了仪器与油管环形测量区域内聚合物溶液流速剖面分布;采用有限元方法,得到了四电极电磁流量计磁场分布,在确定流量计权重函数分布情况下,从理论上考察了清水与聚合物溶液流体分布条件下四电极电磁流量计响应输出特性。根据实验测量结果,从理论上解释了清水与聚合物溶液中仪器响应产生差别的原因。此外,还考察了流场中存在铁磁性悬浮物颗粒及仪器倾斜因素对仪器响应输出的影响,为注聚井中四电极电磁流量计流量测量精度改进提供了理论依据,采用流场及磁场有限元分析技术,有助于提高电磁流量计测量特性。

关键词: 注聚井, 电磁流量计, 测量特性, 磁场分布, 流速分布

Abstract:

Based on the computational fluid dynamics technique,the flow velocity distribution of polymer solution in the annular area between flowmeter and tubing was computed.The magnetic field distribution of four electrodes electromagnetic flowmeters was given by using the finite element method.The responsive characteristics of the flowmeters in pure water and polymer solution were investigated by determining the weight function distribution of the flowmeters.The experimental results interpreted theoretically the response difference of the electromagnetic flowmeters in pure water and polymer solution.Furthermore,several factors influencing the output response were also investigated,such as suspended ferromagnetism particles existing in the flow field and the inclination of flowmeters.The theoretical base was provided for improving the measurement accuracy of electromagnetic flowmeters in polymer injection well.The finite element technique of flow field and magnetic field analysis is helpful to further improving measurement characteristics of electromagnetic flowmeters.

Key words: polymer injection well, electromagnetic flowmeter, measurement characteristics, magnetic field distribution, flow velocity distribution

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