LYU Chao.An internal corrosion direct assessment method for the gas injection/ withdrawal pipeline of one underground gas storage[J].Oil & Gas Storage and Transportation,2018,37(预出版):1-7.
某储气库注采气管道内腐蚀直接评估方法
- Title:
-
An internal corrosion direct assessment method for the gas injection/ withdrawal pipeline of one underground gas storage
- Keywords:
-
underground gas storage
; gas injection/withdrawal pipeline; internal corrosion; direct assessment; dry gas; wet gas
- 分类号:
- TE822
- 文献标志码:
- A
- 摘要:
-
为研究某储气库注采气管道的内腐蚀情况，运用干气管道内腐蚀直接评估方法和湿气管道内腐蚀直接评估方法对该管道进行评估，包括预评估、间接检测、详细检查和后评估4 个步骤。在预评估阶段，结合该管道不定期双向流动的特点，从里程和时间两个角度划分ICDA 分区；间接检测阶段，运用湿气管道内腐蚀直接评估方法对采气过程进行评估，运用干气管道内腐蚀直接评估方法对注气过程进行评估，其中既考虑正常采气或注气阶段，也考虑了较长的停输时期；详细检查阶段，利用超声波测厚仪对该管道进行壁厚测量，确定该管道是否存在内腐蚀；在后评估阶段评价该管道再评估周期。评估结果表明，该管道存在内腐蚀，但缺陷处剩余强度未受到显著影响。
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