油气管道风险评估与完整性评价技术研究及应用_罗金恒.pdf

710077 Research and Application on the Risk Evaluation and Integrity Assessment of Oil and Gas Pipeline Luo Jinheng, Zhao Xinwei, Zhang Hua, Yang Fengping, Wang Ke, Ma Weifeng CNPC Tubular Goods Research Institute, Xi’an, Shaanxi, 710077 Abstract: Managerial concept of the integrity of oil and gas pipeline, its flow chart were interpreted. Risk evaluation and integrity assessment of its core technology were proposed. Since the wide applications of high grade pipeline steel as well as the old pipe extended service, many problems and challenges were brought to risk assessment and integrity evaluation technology, So, Many techniques were researched or re-examined including pipeline risk evaluation, forecasting critical buckling strain limit, high-grade steel pipeline failure assessment figure, dispersion-type damage integrity assessment, fracture mechanics model of weld complex defect, reinforcement and repair technique of pipeline with defects, and systems of pipeline risk evaluation and integrity assessment were established, the pipeline integrity management techniques were further improved. Key words: risk evaluation; integrity assessment; buckling; failure assessment figure; dispersion-type damage; complex defect 10 2012 8 km [1] 418