摘要
小口径管道作为油气田地面集输系统的重要组成部分,具有管内空间小、管网结构复杂、建设水平各异、管径/压力差异大、介质种类繁多等特点,一直以来缺乏成熟的检测手段。作为保障管道安全的有效方式,内检测技术(In-line inspection, ILI)已得到广泛认可,它能够精准识别和定位管道缺陷位置,同时可以提供关于管道缺陷量化等信息。目前各类内检测技术在大口径管道(DN>200 mm)中具有良好的适应性,然而,由于小口径(DN≤200 mm)管道空间限制,现有通用内检测器需要在比常规管道更小的空间内布局探头、钢刷和皮碗等结构,存在检测器卡堵风险大、缺陷检出率和量化精度低等问题。特别是,在小口径管道漏磁检测器的研发中,检测器的通过性和数据质量之间存在一定的技术矛盾,对于高分辨率内检测器所需部件的机械和电子结构设计构成了额外的挑战。本文在总结管道内检测技术研究现状基础上,聚焦于小口径管道内检测器的研发难点,提出优化改进建议。研究成果对进一步优化小口径管道内检测技术、提高检测器性能和确保管道安全运行具有重要的科学意义和应用价值。
Small-diameter pipelines, as a vital component of the oil & gas field surface gathering system, are characterized by limited internal space, complex pipeline networks, varying construction standards, significant differences in pipe diameter and pressure, and a wide range of transported media. These characteristics have led to a lack of mature inspection methods for such pipelines. As an effective means of ensuring pipeline safety, in-line inspection (ILI) technology has gained widespread recognition. ILI allows for accurate identification and localization of pipeline defects and provides valuable information such as defect quantification. Currently, various ILI techniques exhibit good adaptability in large-diameter pipelines (DN >200 mm). However, due to the spatial constraints of small-diameter pipelines (DN≤200 mm), existing universal ILI tools need to accommodate components such as sensors, brushes, and cups within much smaller spaces. These result in poor pipeline passability, low defect detection rates, and reduced quantification accuracy. Specifically, in the development of magnetic flux leakage (MFL) ILI tools for small-diameter pipelines, there is a technical conflict between tool passability and data quality, which presents additional challenges in the mechanical and electronic design of high-resolution ILI tools. Based on a review of the current state of research in pipeline ILI technologies, this summary focuses on the development challenges of small-diameter pipeline ILI tools and proposes optimization and improvement suggestions. The research findings are of significant scientific and practical value for further optimizing small-diameter pipeline ILI technology, enhancing equipment performance, and ensuring the safe operation of pipelines.
作者
张佳
秦林
孙明楠
刘畅
林冬
赵帅
唐洪
ZHANG Jia;QIN Lin;SUN Mingnan;LIU Chang;LIN Dong;ZHAO Shuai;TANG Hong(Safety,Environment and Technology Supervision Research Institute of PetroChina Southwest Oil and Gas Field Company,Chengdu 610041,China;China National Energy R&D Center of High Sulfur Gas Exploitation,Chengdu 610000,China;Quality,Safety and Environmental Protection Department,PetroChina Southwest Oil&Gas Field Materials Branch,Chengdu 610031,China)
出处
《材料导报》
北大核心
2025年第22期210-221,共12页
Materials Reports
基金
中石油西南油气田博士后项目(2024D105-01-02)。
关键词
小口径管道
集输系统
内检测
腐蚀缺陷
漏磁检测
small-diameter pipelines
gathering and transportation system
in-line inspection
corrosion defects
magnetic flux leakage
