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1.引言抽油杆、油管和钻杆(以下简称杆管)是油田中的重要生产物资,在石油工业中占有重要地位,它们不但用量大,且应用环境恶劣。杆管经过一定的使用周期,都会不同程度地存在裂纹、腐蚀坑、偏磨等缺陷。这些缺陷如果不能及时的发现和处理,就可能导致井下事故,使单井产量降低,且增加作业成本。国外在研究和开发适合于油田杆管缺陷检测技术起步较早,技术相对先进和完善,因此了解和借鉴国外的
1. Introduction Sucker rods, tubing and drill pipe (hereinafter referred to as the rod) is an important production material in the oil field, plays an important role in the oil industry, they not only heavy use, and the application of harsh environment. Pipe after a certain period of use, there will be varying degrees of cracks, corrosion pits, partial wear and other defects. These defects, if not discovered and disposed of in a timely manner, could lead to downhole accidents, reduce single-well production and increase operating costs. Abroad in the research and development of oil field pipe defects detection technology started earlier, the technology is relatively advanced and perfect, so to understand and learn from foreign