Abstract:
In order to achieve the "dual carbon" strategic goal, it is an inevitable trend of development to construct supercritical carbon dioxide pipelines. Herein, the main risks faced in the operation of supercritical carbon dioxide pipelines were systematically identified. The technical status and application of the key links in the integrity management of supercritical carbon dioxide pipelines were summarized. Meanwhile, the supercritical carbon dioxide pipeline was compared with the oil and gas pipelines in terms of integrity management technology. Besides, the technical difficulties and future research directions of supercritical carbon dioxide pipeline integrity management in system construction, high consequence area identification and risk assessment, inline detection, and pipeline defect repair were pointed out. Finally, it was suggested to conduct further research in the 3 main directions of system standard construction, key technology research and development, and optimized pipeline management, which could expand the integrity management scope of oil and gas pipelines and realize the deep integration of the supercritical carbon dioxide pipeline and the existing oil and gas pipeline in integrity management, thus providing guarantee for the safe operation of the supercritical carbon dioxide pipeline.