【Ten Years of Rapid Development in Chemical Engineering Equipment】From 2756 to 2025, a team from the Petroleum University made significant breakthroughs in oil and gas pipeline technology using acoustic-magnetic integrated ultra-high-definition inspection techniques

Thread Content

A team from the Petroleum University has made a significant breakthrough in oil and gas pipeline technology; let’s give praise and support to the achievements in China’s chemical engineering technology and equipment. Your participation in discussions is the greatest encouragement. **********************【Ten Years of Progress in Chemical Engineering Equipment】Regular updates and summaries are available; feel free to join the discussions: https://bbs.hcbbs.com/thread-3576046-1-1.html ***************** Attention is focused on “new breakthroughs in ensuring the safety of oil and gas pipelines”, with one major achievement attracting much attention. The first prize in the 2024 Green Mine Science and Technology Award, awarded for \"Key Technologies for Inspections within Oil and Gas Pipelines,\" not only signifies the international leadership of this technology but also highlights China’s technological superiority in the field of oil and gas pipeline safety. This technology has successfully solved long-standing challenges in the industry, such as those related to complex defect detection. By employing acoustic-magnetic hybrid ultra-high-definition inspection methods, it significantly improves the accuracy of detection and evaluation, while also optimizing the repair process. It provides a solid foundation for the safe and stable operation of oil and gas pipelines in China, and helps to usher in a new era of green transformation in the energy sector. The Pipeline Technology and Safety Research Center at China University of Petroleum (Beijing) further explained the key breakthroughs in the acoustic-magnetic integrated ultra-high-definition inspection technology. The team conducted in-depth research on the quantitative mechanism of the helical excitation acoustomagnetic coupled field for complex defects, and innovatively developed a three-dimensional excitation characterization model for tube defects. Based on these research findings, they successfully developed an acousto-magnetic integrated ultra-high-definition inspection technology, providing unprecedented inspection capabilities for pipeline safety. This technology is like a super-high-definition \"health check\" for pipelines; by utilizing the unique effects of sound and magnetic fields, it can accurately detect any minor issues within the pipes. Compared to traditional detection methods, its accuracy and comprehensiveness have been significantly improved. Intelligent weld evaluation technology: Wang Dongying, deputy director of the Technology and Digital Center at Beijing Pipeline Co., Ltd. of the Pipe Network Group, provided a detailed overview of the innovations in intelligent evaluation of pipeline weld X-ray films. This technology not only optimizes the preprocessing process for pipeline weld radiograph images but also introduces intelligent evaluation techniques, thereby overcoming the limitations of traditional methods such as low accuracy in weld defect detection and difficulties in identifying radiographs of the same weld. This achievement has been successfully demonstrated in **Pipe Network Beijing Pipeline Co., Ltd., where the identification and evaluation of root gap defects were carried out for 4,500 welds on the Xianghe direct line of the Shaanxi-Beijing Line 4, as well as for 4,200 welds on the Miyun Mafang connection pipeline. At the same time, this technology has also promoted the development of intelligent software for detecting defects in electronic negatives, and corresponding databases for electronic negatives have been established. The intelligent evaluation technology for weld radiographic films is akin to conducting a thorough \"X-ray examination\" of the welds; subsequent to this, an intelligent system is used to analyze these \"examination results\" in detail, thereby identifying potential defects within the welds with precision. This innovative technology significantly improves the efficiency of defect detection, while greatly reducing the workload associated with manual operations. In practical use, the screening speed of this technology is 5 times that of manual film screening, and it can save over 90% of the labor cost. Defect evaluation and repair techniques: In terms of defect evaluation, Dong Shaohua’s team has also proposed effective strategies to address this issue. They developed an intelligent evaluation theory for multi-dimensional, multi-field, and multi-mode defects in oil and gas pipelines, and introduced a radial basis neural network model for multi-source data fusion. Through these innovations, they successfully developed a safety factor correction method for pipeline failure assessment, thereby overcoming the limitations of relying solely on internal pressure evaluation. Furthermore, they developed a weld defect evaluation and life assessment model based on FAD graphs, as well as a pipeline integrity assessment system suitable for complex loading conditions, thereby significantly improving the accuracy of predicting the remaining lifespan of pipelines. This comprehensive evaluation system takes into account a variety of influencing factors, such as the pressure inside the pipeline and the external environment, thereby ensuring greater reliability of the evaluation results. In the field of emergency repair technology, Dong Shaohua’s team has also made significant progress. They innovatively developed intelligent pipeline repair and rapid leak repair technologies, successfully overcoming the challenges of performing permanent repairs on defective pipelines without interrupting service and without using welding. The team developed new intelligent sleeve repair equipment for pipes along with an epoxy injection process, and created nano-reinforced epoxy resin structures with microwave absorption properties as well as an injection process for them. In addition, an AI chip is built in to monitor the repair results in real time and provide risk alerts. Furthermore, they developed rapid leak repair materials, processes, and equipment that can be used within 12 hours, enabling pipeline repairs to be carried out efficiently and conveniently, as if there were an \"intelligent doctor\" at work.