Ni-W镀管在CO2注入井工况下的适用性研究

马英文, 邢希金, 冯桓榰, 杨芝乐, 王竹

doi:10.16577/j.issn.1001-1560.2024.0202

材料保护 >

2024 , Vol. 57 >Issue 9: 63 - 70

DOI: https://doi.org/10.16577/j.issn.1001-1560.2024.0202

研究篇

Ni-W镀管在CO₂注入井工况下的适用性研究

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¹中海油研究总院有限责任公司； ²北京科技大学新材料技术研究院

马英文(1974-)，硕士，正高级工程师，主要从事海上钻完井研究与管理工作，E-mail:mayw＠cnooc.com.cn

收稿日期: 2024-01-03

修回日期: 2024-03-14

录用日期: 2024-03-16

网络出版日期: 2024-11-14

基金资助

中国海洋石油有限公司综合科研项目“高温动态腐蚀环境演化与经济型油套管防腐技术研究”项目(KJZH-2024-2301)

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Study on the Applicability of Ni-W Coated Tubing in CO₂ Injection Well Environments

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(1.CNOOC Research Institute Co.， Ltd.， Beijing 100028， China；2.Institute for Advanced Materials and Technology， University of Science and Technology Beijing， Beijing 100083， China)

MA Yingwen(1974-)， Master， Professorate Senior Engineer， Research Focus: Research and Management of Offshore Drilling and Completion， E-mail:mayw＠cnooc.com.cn

Received date: 2024-01-03

Revised date: 2024-03-14

Accepted date: 2024-03-16

Online published: 2024-11-14

Supported by

Comprehensive Scientific Research Projects of China National Offshore Oil Corporation， “Research on the Evolution of High-Temperature Dynamic Corrosion Environment and Cost-Effective Oil Casing and Tubing Anti-Corrosion Technology”(KJZH-2024-2301)

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摘要

为研究Ni-W 镀管材料在CO2注入井工况下的适用性，采用高温高压腐蚀模拟实验，结合扫描电镜、激光共聚焦显微镜及X 射线衍射仪研究了Ni-W 镀层的腐蚀行为。结果表明，在含有杂质的超临界CO2注入工况下Ni-W 镀层具有一定的耐均匀腐蚀能力，但存在局部腐蚀风险；在地层水反流的CO2注入井工况下，微量的H2S 会诱发Ni-W 镀层发生较为严重的腐蚀失效，造成镀层开裂和局部破损；在存在地层水反流的高含氧CO2注入井工况下，Ni-W 镀层会形成微裂纹，并在内外镀层界面形成腐蚀产物。

关键词： CCUS; Ni-W 镀层; 超临界二氧化碳; 腐蚀; 硫化氢; 氧含量

本文引用格式

马英文, 邢希金, 冯桓榰, 杨芝乐, 王竹 . Ni-W镀管在CO₂注入井工况下的适用性研究[J]. 材料保护, 2024 , 57(9) : 63 -70 . DOI: 10.16577/j.issn.1001-1560.2024.0202

Abstract

For studying the applicability of Ni-W coating in CO2 injection wells， the corrosion behaviors of Ni-W coatings were studied by high temperature and high - pressure corrosion simulation experiments combined with scanning electron microscope (SEM)， laser confocal microscope and X-ray diffractometer (XRD).Results showed that the Ni-W coating had certain uniform corrosion resistance under the condition of supercritical CO2 containing impurities injection condition， but there was localized corrosion risk.In the case of CO2 injection well with formation water reflux， a small amount of H2S would induce severe corrosion failure of Ni-W coatings， resulting in cracking and local damage of the coating.In the case of high oxygenated CO2 injection well with formation water reflux， micro-cracks would be formed in Ni-W coatings，and corrosion products would be generated at the inner and outer coating interfaces.

Key words： CCUS; Ni-W coating; super critical CO₂; corrosion; H₂S; O₂ content

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