石油套管缺陷漏磁检测技术的研究

doi:10.3696/j.issn.1006-396X.2009.03.020

石油化工高等学校学报 ›› 2009, Vol. 22 ›› Issue (3): 83-85.DOI: 10.3696/j.issn.1006-396X.2009.03.020

石油套管缺陷漏磁检测技术的研究

陈金忠, 林立, 宋强

中国石油大学(北京) 机电学院,北京102249

收稿日期:2008-12-18 修回日期:2009-04-23 出版日期:2009-09-25 发布日期:2009-09-25
作者简介:陈金忠(1981 -), 男, 甘肃武威市, 在读博士
基金资助:
北京市教育委员会重点学科共建项目(XK114140594)

The Research of Magnetic Flux Leakage Testing Technology for Well Casing

Faculty of Mechanical and Electronic Engineering, China University of Petroleum （Beijing）,Beijing 102249,P. R. China

Received:2008-12-18 Revised:2009-04-23 Published:2009-09-25 Online:2009-09-25

摘要/Abstract

摘要： 针对现役石油套管漏磁检测的复杂环境和井下尺寸要求，开发了基于双MCU 控制的井下高速套管
缺陷检测数据采集与海量存储系统，同时也开发了井上位置采集系统，免去了随探头装载编码器引来结构上的复杂和可靠性不足；基于Labview 开发了套管缺陷漏磁信号软件分析系统，可实现漏磁信号的波形显示，并基于小波模极大值算法将漏磁信号数据和对应的位置信息关联起来。现场实验验证了系统能对套管缺陷进行有效的检测以及漏磁信号的显示。

关键词: 石油套管 , 双MCU , 漏磁检测 , 小波模极大值

Abstract: Based on the complicated environment well casing laid and size requirement of down - hole , the hardware system suitable to casing inspection was developed to acquire and store the magnetic flux leakage signal , which was cont rolled by dual- MCU. The up - hole location acquiring system was also developed without encoder, by which it can avoid complicated mechanical st ructure and low reliability. The sof tware system developed by Labview could display the magnetic flux leakage signal, and the magnetic flux leakage signal and location were correlated based on wavelet modulus maxima algorithm. Finally the experiment result indicates that the system can detect s the defect s of well casing and displays the magnetic flux leakage signal.

Key words: Well casing , Dual - MCU , Magnetic flux leakage inspection , Wavelet modulus maxima algorithm

陈金忠, 林立, 宋强. 石油套管缺陷漏磁检测技术的研究[J]. 石油化工高等学校学报, 2009, 22(3): 83-85.

CHEN Jin-zhong， LIN Li， SONG Qiang. The Research of Magnetic Flux Leakage Testing Technology for Well Casing[J]. Journal of Petrochemical Universities, 2009, 22(3): 83-85.

石油套管缺陷漏磁检测技术的研究

The Research of Magnetic Flux Leakage Testing Technology for Well Casing

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