Abstract:

The corrosion and perforation risk of metal pipes in oil and gas fields is becoming more and more serious, and pipeline leakage accidents often occur. Non-metallic pipes such as glass steel pipe, steel skeleton reinforced polyethylene composite pipe and flexible composite pipe are gradually favored in oil and gas field development and production system for their good corrosion resistance and applicability. However, due to the aging effects of internal and external pressure load and medium corrosion during the long-term service of the pipe, various failure problems such as matrix cracking, pipe body brittle, fiber/matrix interfacial debonding, interlayer separation and so on need to be solved urgently. Based on this situation, this paper summarized the characteristics, application and failure causes of non-metallic pipelines commonly used in oil and gas fields, as well as the detection and positioning, non-destructive testing technology, risk assessment and life prediction methods of non-metallic pipelines, and put forward relevant suggestions on the prevention of non-metallic pipeline damage and failure in pipeline manufacturing, construction, operation, application, maintenance and key technologies. The paper also prospected the key issues of non-metallic pipeline failure prevention technology to provide effective support for the relevant research of non-metallic pipeline failure prediction methods and prevention and control technologies.

Key words: non-metallic pipelines, failure, detection technology, risk assessment, prediction method

摘要：

油气田金属管道腐蚀穿孔风险日趋严重，管道泄漏事故时有发生，玻璃钢管、钢骨架增强聚乙烯复合管、柔性复合管等非金属管道以其良好的耐蚀性和适用性在油气田开发生产系统中逐渐受到青睐。然而，由于管道在长期服役过程中遭受内外压载荷、介质腐蚀等老化作用，随之而来的诸如基体开裂、管体脆断、纤维/基体界面脱黏、层间分离等各种失效问题亟待解决。基于此现状，文章综述了油气田常用非金属管道特点、应用、失效原因，以及非金属管道探测定位、无损检测技术、风险评估和寿命预测方法，针对非金属管道损伤失效的预防在管道制造、施工、运行、应用、维修及关键技术等方面提出了相关建议，并对非金属管道失效预防技术攻关方面进行展望，为非金属油气管道失效预测方法及其防控技术的相关研究提供有效支撑。

关键词: 非金属管道, 失效, 检测技术, 风险评估, 预测方法