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页岩气井内涂层油管穿孔失效原因分析.

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Title: 页岩气井内涂层油管穿孔失效原因分析.
Alternate Title: Cause analysis of perforation failure of internally coated tube in a shale gas well.
Authors: 李虹杰1,2 18428301109@163.com, 黄洪发1, 苗超1, 朱文旭3, 宋宇4, 黄红兵1, 唐楠5, 贺建峰5
Source: Chemical Engineering of Oil & Gas / Shi You Yu Tian Ran Qi Hua Gong. Jun2026, Vol. 55 Issue 3, p119-124. 6p.
Subject Terms: *Corrosion engineering, *Tubes, *Material erosion, *Chloride ions, *Carbon steel corrosion, *Shale gas reservoirs, *Mechanical behavior of materials
Abstract (English): Objective This study aims to clarify the causes of the perforation failure of internally coated tube in a shale gas well in Sichuan Province. Method Failure analysis was carried out in the failure internally coated tube by macroscopic morphology analysis, physical and chemical property testing, corrosion product analysis, and microscopic morphology analysis of the coating. Result Corrosion of the failed internally coated tube occurred from the outside inward, leading to perforation. The gas flow scoured the inner surface of the coating from the outside inward, resulting in coating detachment. The microstructure, chemical composition, yield strength, and tensile strength of the base material of the tubing met the standard requirements, while the elongation was slightly below the specified value. Corrosion product analysis indicated that the failure was caused by CO2 corrosion. Conclusion CO2 corrosion occurred on the outer wall of the internally coated tube, and Cl- promoted the development of localized corrosion pits. Additionally, gas lift scouring led to the detachment of the internal coating, resulting in failure. [ABSTRACT FROM AUTHOR]
Abstract (Chinese): 目的 以四川某页岩气井为例, 厘清内涂层油管穿孔失效的原因。方法 通过宏观形貌分析、理化性能测试、腐蚀 产物分析、涂层微观形貌分析等方法对失效内涂层油管进行失效分析。结果 失效内涂层油管由外向内被腐蚀导致穿孔, 气流由外向内冲刷涂层内表面, 导致涂层脱落; 内涂层油管基体材料的组织、化学成分、屈服强度和抗拉强度均符合标准 要求, 伸长率略低于标准要求; 腐蚀产物分析表明内涂层油管发生 CO2腐蚀导致失效。结论 内涂层油管外壁发生 CO2腐 蚀, Cl−促进局部腐蚀坑的发展, 气举冲刷导致内涂层脱落失效。 [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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Header DbId: enr
DbLabel: Energy & Power Source
An: 195131740
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PubType: Academic Journal
PubTypeId: academicJournal
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  Data: 页岩气井内涂层油管穿孔失效原因分析.
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  Data: Cause analysis of perforation failure of internally coated tube in a shale gas well.
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  Data: <searchLink fieldCode="AR" term="%22李虹杰%22">李虹杰</searchLink><relatesTo>1,2</relatesTo><i> 18428301109@163.com</i><br /><searchLink fieldCode="AR" term="%22黄洪发%22">黄洪发</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22苗超%22">苗超</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22朱文旭%22">朱文旭</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22宋宇%22">宋宇</searchLink><relatesTo>4</relatesTo><br /><searchLink fieldCode="AR" term="%22黄红兵%22">黄红兵</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22唐楠%22">唐楠</searchLink><relatesTo>5</relatesTo><br /><searchLink fieldCode="AR" term="%22贺建峰%22">贺建峰</searchLink><relatesTo>5</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Chemical+Engineering+of+Oil+%26+Gas+%2F+Shi+You+Yu+Tian+Ran+Qi+Hua+Gong%22">Chemical Engineering of Oil & Gas / Shi You Yu Tian Ran Qi Hua Gong</searchLink>. Jun2026, Vol. 55 Issue 3, p119-124. 6p.
– Name: Subject
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  Data: *<searchLink fieldCode="DE" term="%22Corrosion+engineering%22">Corrosion engineering</searchLink><br />*<searchLink fieldCode="DE" term="%22Tubes%22">Tubes</searchLink><br />*<searchLink fieldCode="DE" term="%22Material+erosion%22">Material erosion</searchLink><br />*<searchLink fieldCode="DE" term="%22Chloride+ions%22">Chloride ions</searchLink><br />*<searchLink fieldCode="DE" term="%22Carbon+steel+corrosion%22">Carbon steel corrosion</searchLink><br />*<searchLink fieldCode="DE" term="%22Shale+gas+reservoirs%22">Shale gas reservoirs</searchLink><br />*<searchLink fieldCode="DE" term="%22Mechanical+behavior+of+materials%22">Mechanical behavior of materials</searchLink>
– Name: Abstract
  Label: Abstract (English)
  Group: Ab
  Data: Objective This study aims to clarify the causes of the perforation failure of internally coated tube in a shale gas well in Sichuan Province. Method Failure analysis was carried out in the failure internally coated tube by macroscopic morphology analysis, physical and chemical property testing, corrosion product analysis, and microscopic morphology analysis of the coating. Result Corrosion of the failed internally coated tube occurred from the outside inward, leading to perforation. The gas flow scoured the inner surface of the coating from the outside inward, resulting in coating detachment. The microstructure, chemical composition, yield strength, and tensile strength of the base material of the tubing met the standard requirements, while the elongation was slightly below the specified value. Corrosion product analysis indicated that the failure was caused by CO2 corrosion. Conclusion CO2 corrosion occurred on the outer wall of the internally coated tube, and Cl- promoted the development of localized corrosion pits. Additionally, gas lift scouring led to the detachment of the internal coating, resulting in failure. [ABSTRACT FROM AUTHOR]
– Name: Abstract
  Label: Abstract (Chinese)
  Group: Ab
  Data: 目的 以四川某页岩气井为例, 厘清内涂层油管穿孔失效的原因。方法 通过宏观形貌分析、理化性能测试、腐蚀 产物分析、涂层微观形貌分析等方法对失效内涂层油管进行失效分析。结果 失效内涂层油管由外向内被腐蚀导致穿孔, 气流由外向内冲刷涂层内表面, 导致涂层脱落; 内涂层油管基体材料的组织、化学成分、屈服强度和抗拉强度均符合标准 要求, 伸长率略低于标准要求; 腐蚀产物分析表明内涂层油管发生 CO2腐蚀导致失效。结论 内涂层油管外壁发生 CO2腐 蚀, Cl−促进局部腐蚀坑的发展, 气举冲刷导致内涂层脱落失效。 [ABSTRACT FROM AUTHOR]
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.3969/j.issn.1007-3426.2026.03.013
    Languages:
      – Code: chi
        Text: Chinese
    PhysicalDescription:
      Pagination:
        PageCount: 6
        StartPage: 119
    Subjects:
      – SubjectFull: Corrosion engineering
        Type: general
      – SubjectFull: Tubes
        Type: general
      – SubjectFull: Material erosion
        Type: general
      – SubjectFull: Chloride ions
        Type: general
      – SubjectFull: Carbon steel corrosion
        Type: general
      – SubjectFull: Shale gas reservoirs
        Type: general
      – SubjectFull: Mechanical behavior of materials
        Type: general
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      – TitleFull: 页岩气井内涂层油管穿孔失效原因分析.
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            NameFull: 李虹杰
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              M: 06
              Text: Jun2026
              Type: published
              Y: 2026
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            – TitleFull: Chemical Engineering of Oil & Gas / Shi You Yu Tian Ran Qi Hua Gong
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