| 改进LMS时延估计算法在油气水三相流流量测量中的应用 |
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| 引用本文： | 李林,李英伟,孔令富,李朝辉,朱广路.改进LMS时延估计算法在油气水三相流流量测量中的应用[J].燕山大学学报,2014(4):371-376. |
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| 作者姓名： | 李林 李英伟 孔令富 李朝辉 朱广路 |
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| 作者单位： | 燕山大学 信息科学与工程学院,河北 秦皇岛,066004 |
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| 基金项目： | 国家科技重大专项资助项目(2011ZX05020-006)；高等学校博士学科点专项科研基金资助项目(20131333110015)；河北省自然科学基金资助项目 |
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| 摘 要： | 油气水三相流流量测量是油气田开发动态监测普遍存在的问题,其测量的准确与否对油气田开发具有重要意义.本文提出一种基于最大似然LMS 自适应时延估计的改进算法,该算法首先通过小波变换对采集数据进行滤波以减小LMS 自适应时延估计的误差;然后采用改进的最大似然加权函数对计算结果进行修正,以使计算结果更加准确,收敛更加迅速.在大庆油田模拟井实验平台上对改进算法进行了验证,为准确测量油气水三相流流量提供了一种可行的方法.
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| 关 键 词： | 油气水三相流 流量测量 LMS 时延估计 最大似然估计 |
Application of improved LMS time delay estimation algorithm in flow rate measurement of oil-gas-water three-phase flow |
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| LI Lin,LI Ying-wei,KONG Ling-fu,LI Zhao-hui,ZHU Guang-lu.Application of improved LMS time delay estimation algorithm in flow rate measurement of oil-gas-water three-phase flow[J].Journal of Yanshan University,2014(4):371-376. |
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| Authors: | LI Lin LI Ying-wei KONG Ling-fu LI Zhao-hui ZHU Guang-lu |
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| Institution: | (College of Information Science and Engineering, Yanshan University, Qinhuangdao, Hebei 066004, China) |
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| Abstract: | The flow rate measurement of oil-gas-water three-phase flow is a common problem in the dynamic monitoring of oilgasfield, and the accuracy is great significance in the development of oil-gas field. ALMS adaptive time delay estimation algorithmbased on themaximumlikelihood estimation is proposed. Firstly, the filtering method of wavelet transformis used in this improvedalgorithmfor reducing the error of LMS adaptive time delay estimation. Then themachine＇smaximumlikelihood weighted functionis used for making the results accurate and rapid convergence. Finally, the experiments are performed in the simulation well ofDaqing oilfield, and the results indicate this improved algorithmis a feasible method for the flowrate measurement of oil-gas-waterthree-phase flow. |
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| Keywords: | oil-gas-water three-phase flow flow rate measurement LMS time delay estimation maximum likelihood estimation |
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