关键词: font-family:", background-color:#FFFFFF, ">碳酸盐岩, 脉冲涡流, 电磁探伤, 非商完整性评价

Abstract: Electromagnetic flaw detection logging technology plays a critical role in the safe operation and extended service life of wells by detecting corrosion, wear, and defects in casing, enabling effective iden- tification and localization of issues, which allows for timely interventions. Currently, the majority of next- generation electromagnetic flaw detection logging instruments primarily utilize pulsed eddy current tech- nology. This technology not only allows for precise detection of wellbore structures and identification of defects but also provides insights into the variations in the thickness of multi-layered pipe strings, espe- cially in the corrosion and damage of third to fourth layers tubing and casing. Moreover, the practical ap- plication of full-resolution electromagnetic flaw detection instruments using this technology in Saudi oil fields has demonstrated significant advantages. It saves time and reduces costs related to tubing lifting, while also minimizing the impact on well production operations and output. The instruments excel in terms of positioning accuracy, sensitivity, and responsiveness to changes, providing oilfield engineers with accurate data to develop targeted maintenance strategies. This helps reduce wellbore safety risks and failure rates. The case studies presented in this paper highlight the practical value and potential of pulsed 

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