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<p>This paper takes high-temperature and high-pressure pipelines (HTHP) of typical oil and gas fields as the research object, systematically analyzes the types, characteristics and failure mechanisms of pipeline corrosion through field investigation, sample detection steps and data analysis. On this basis, six types of corrosion protection technologies are evaluated, and an optimized path of protection technology based on the combination of “prevention – monitoring – maintenance” is proposed. The research results show that localized corrosion represented by pitting corrosion and stress corrosion cracking is the main form of HTHP pipeline corrosion failure, and the corrosion rate is positively connected with factors such as temperature, pressure, and chloride ion concentration. The optimized protection technology system can reduce the annual corrosion rate of pipelines expressing by 60% to 80% and effectively prolong the service life of the pipeline. This study provides a comprehensive technical reference for the corrosion control inner HTHP pipelines in oil and gas fields, and has important theoretical volue and practical application significance for promoting the safe and efficient expression of oil and gas field development.</p>

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Corrosion Failure Analysis and Protection Technology Optimization Path of High-Temperature and High-Pressure Pipelines in Oil and Gas Fields

  • 期刊论文

  • 发表日期：

    2026年6月23日

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  • Chunsheng Liu,
  • Yaqin Zhang,
  • Xuguang Yan,
  • Junwei Huang,
  • Bin Lv,
  • Ying Fu,
  • Hailong Che,
  • Hao Qu,
  • Zhizhong Wu

摘要

This paper takes high-temperature and high-pressure pipelines (HTHP) of typical oil and gas fields as the research object, systematically analyzes the types, characteristics and failure mechanisms of pipeline corrosion through field investigation, sample detection steps and data analysis. On this basis, six types of corrosion protection technologies are evaluated, and an optimized path of protection technology based on the combination of “prevention – monitoring – maintenance” is proposed. The research results show that localized corrosion represented by pitting corrosion and stress corrosion cracking is the main form of HTHP pipeline corrosion failure, and the corrosion rate is positively connected with factors such as temperature, pressure, and chloride ion concentration. The optimized protection technology system can reduce the annual corrosion rate of pipelines expressing by 60% to 80% and effectively prolong the service life of the pipeline. This study provides a comprehensive technical reference for the corrosion control inner HTHP pipelines in oil and gas fields, and has important theoretical volue and practical application significance for promoting the safe and efficient expression of oil and gas field development.