Scholarlink

<p>Crude oil heaters are critical equipment in oil and gas gathering and transportation systems. However, corrosion-induced leakage in their core heat exchanger coils may cause serious safety incidents. To elucidate the perforation failure mechanism in the heat exchanger coil elbows of crude oil heater, this study employs advanced characterization techniques and simulation experiment for systematic analysis of failed components and service behavior. The results indicate that the chemical composition and mechanical properties of the heat exchanger coil elbow meet the standard GB/T 5310-2023. Localized CaCO<sub>3</sub> scale deposition was detected on the inner wall of the elbow pipe. The produced water exhibited a strong tendency for CaCO<sub>3</sub> scale. Flow simulations indicated that the elbow position was more susceptible to deposition than other locations. This scale establishes a galvanic couple between the underlying metal and exposed bare metal surfaces. Hence, under-deposit corrosion is the primary cause of elbow corrosion perforation. It is recommended that a dual-effect scale/corrosion inhibitor or corrosion-resistant elbow materials to enhance the corrosion resistance of elbow components.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Cause Analysis of Corrosion Perforation at the Heat Exchanger Coil Elbow of Crude Oil Heater in an Oilfield

  • 期刊论文

  • 发表日期：

    2026年1月25日

查看全文
  • Shaohua Song,
  • Naixin Lv,
  • Bo Feng,
  • Lulu Yang,
  • Zhan Zhou,
  • Juantao Zhang,
  • Jufeng Huang

摘要

Crude oil heaters are critical equipment in oil and gas gathering and transportation systems. However, corrosion-induced leakage in their core heat exchanger coils may cause serious safety incidents. To elucidate the perforation failure mechanism in the heat exchanger coil elbows of crude oil heater, this study employs advanced characterization techniques and simulation experiment for systematic analysis of failed components and service behavior. The results indicate that the chemical composition and mechanical properties of the heat exchanger coil elbow meet the standard GB/T 5310-2023. Localized CaCO3 scale deposition was detected on the inner wall of the elbow pipe. The produced water exhibited a strong tendency for CaCO3 scale. Flow simulations indicated that the elbow position was more susceptible to deposition than other locations. This scale establishes a galvanic couple between the underlying metal and exposed bare metal surfaces. Hence, under-deposit corrosion is the primary cause of elbow corrosion perforation. It is recommended that a dual-effect scale/corrosion inhibitor or corrosion-resistant elbow materials to enhance the corrosion resistance of elbow components.