套管损伤磁记忆检测信号的量化识别方法  

Quantitative Identification Method for Magnetic Memory Detection Signal of Casing Damage

作　　者：张静[1,2] 樊建春[2] 王培玺[3] 孙秉才[2] 张广伟[2] 齐丽娟[2] 

机构地区：[1]中国石化国际石油勘探开发有限公司 [2]中国石油大学(北京)油气安全工程技术研究中心 [3]中国石油大学(华东)石油工程学院

出　　处：《石油机械》2012年第8期24-28,共5页China Petroleum Machinery

基　　金：国家科技支撑计划项目"三高气田钻完井安全技术体系研究与应用"(2008BAB37B04)的子课题"三高气田井口安全设备配套与安全评价技术"

摘　　要：基于所开展的套管损伤磁记忆损伤判据试验研究成果,对套管损伤的量化识别方法进行了研究。在介绍套管损伤磁记忆信号三维图像重构机理的基础上,借助层间匹配和插值处理,并引入权重,修正插值数据,提高了缺陷重构的精度,同时用HSV彩色空间实现了缺陷图像的显示。通过对局部缺陷处信号的二次重构和对缺陷区域二维断层轮廓信号的分析,确定了缺陷长度、宽度和深度,获得了套管缺陷的表面轮廓,达到了对缺陷可视化识别的目的。应用研制的套管损伤磁记忆检测装置对射孔套管进行三维图像重构和缺陷识别,验证了装置的可靠性。The quantitative identification method of casing damage was studied on the basis of the experimental findings on the magnetic memory damage criteria. The paper introduces the reconstruction mechanism of 3-D image of magnetic memory signal for casing damage and refers to the interlayer matching and interpolating treatment. The study adopts the methods, such as introduction of weight and modification of difference value data, to improve the precision of defect reconstruction and to use the HSV color space to achieve the image display of defect. Through secondary reconstruction of signals at the defect and analysis of 2-D fault contour signal, the length, width and depth of the defect are determined, the surface profile of casing defect is obtained and the purpose of visualized identification of defect is achieved. Application of the developed magnetic memory detection device for casing damage to conduct a 3-D image reconstruction of perforation casing and identification of defect shows that the identification result is precise and reliable.

关 键 词：套管损伤 磁记忆检测 图像重构 缺陷识别 缺陷信号 HSV 

分 类 号：TG115.28[金属学及工艺—物理冶金]