三种泵功图特征提取方法及比较  

Three Methods of Feature Extraction of Pumping Cards and Their Comparison

作　　者：刘炜[1,2] 刘宏昭[2] 

机构地区：[1]陕西教育学院计算机系,西安710061 [2]西安理工大学,西安710048

出　　处：《煤炭技术》2010年第9期202-204,共3页Coal Technology

摘　　要：在油田工作现场,工程师们根据自己的工作经验,通过地面示功图推测泵功图的几何形状,从而判定抽油井的工作状态。如何选择有效的描述泵功图的方法,从而实现井下故障的自动识别?讨论了3种泵功图几何特征提取方法,并用LibSVM工具箱对3种特征提取方法进行分类验证,实验表明矩特征识别方法更适合描述泵功图。In operating site,engineers,based on their working experience,speculate pumping cards from surface dynamometer cards,and identify the operation conditions of dynagragh of pumping unit.How to choice effective describers to describe pumping cards and to realize automatic recognition of the down-hole failures？ Three methods of feature extraction of pumping cards have been discussed,and classification experiments of the three kinds of feature have been done by LibSVM toolbox.The moment features can be better described pumping cards has been verified.

关 键 词：泵功图 模式识别 LIBSVM 

分 类 号：TE35[石油与天然气工程—油气田开发工程]