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Pipeline is the main mode of oil and gas transportation. Before the pipeline is corroded or damaged, and the residual strength of the pipe wall is lower than the acceptable residual strength, taking reasonable pipeline reinforcement measures is the main technical means to eliminate hidden dangers. This article establishes a comprehensive evaluation model structure for repair plans based on the basic properties of indicators that affect the quality of gas pipeline repair, their interrelated effects, and hierarchical membership relationships. Combined with the working conditions and defect characteristics of trunk pipelines, adaptive repair technologies are obtained for different terrain and landforms such as mountainous areas, paddy fields, riverbanks, and dry land. The results indicate that the composite material reinforcement and repair system has good comprehensive adaptability, with epoxy fiberglass reinforced plastic and non welded steel sleeves ranking second. Considering the cost of repair, for defects in long-distance pipelines within the jurisdiction, composite material reinforcement and repair methods are preferred for defects with corrosion depth ≤ 70%; For defects with a corrosion depth greater than 70%, the method of repairing with epoxy fiberglass reinforced plastic and non welded steel sleeves is adopted.

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Research on the Optimal Evaluation Method of Pipeline Body Reinforcement and Repair Technology

  • 会议论文

  • 发表日期：

    2026年

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  • Bihuang Su,
  • Zhu Li,
  • Yaohui Yang,
  • Yanjun Zhang

摘要

Pipeline is the main mode of oil and gas transportation. Before the pipeline is corroded or damaged, and the residual strength of the pipe wall is lower than the acceptable residual strength, taking reasonable pipeline reinforcement measures is the main technical means to eliminate hidden dangers. This article establishes a comprehensive evaluation model structure for repair plans based on the basic properties of indicators that affect the quality of gas pipeline repair, their interrelated effects, and hierarchical membership relationships. Combined with the working conditions and defect characteristics of trunk pipelines, adaptive repair technologies are obtained for different terrain and landforms such as mountainous areas, paddy fields, riverbanks, and dry land. The results indicate that the composite material reinforcement and repair system has good comprehensive adaptability, with epoxy fiberglass reinforced plastic and non welded steel sleeves ranking second. Considering the cost of repair, for defects in long-distance pipelines within the jurisdiction, composite material reinforcement and repair methods are preferred for defects with corrosion depth ≤ 70%; For defects with a corrosion depth greater than 70%, the method of repairing with epoxy fiberglass reinforced plastic and non welded steel sleeves is adopted.