焊管2025，Vol.48Issue(6)：85-92,8.DOI:10.19291/j.cnki.1001-3938.2025.06.012
渤海某井用防砂筛管失效分析
Failure Analysis of Sand Control Screen Pipes used in a Well in Bohai Sea
刘金鑫 1刘新锋 1李良庆 1常立莹1
作者信息
- 1. 中海油田服务股份有限公司天津分公司,天津 300450
- 折叠
摘要
Abstract
For the failure problem of MeshRite sand control screen pipe in a thermal recovery well in the Bohai Sea,the failure causes of the screen pipe were comprehensively analyzed by macro-morphology analysis,physical and chemical analysis,and corrosion performance analysis of the failed pipe fittings,combined with the characteristics of operational conditions.The analysis found that the macro analysis revealed extensive shedding of the metal fibers on the screen.The physical and chemical analysis results showed a 36.36％ reduction in the average diameter of the failed metal fibers after service,with tensile strength declining by 28％.Corrosion performance analysis indicated that the failed metal fibers underwent CO2 corrosion and pitting in the well.The cause of MeshRite screen failure was determined to be severe corrosion of the metal fiber layer downhole,leading to localized thinning of the metal fibers,which subsequently caused a decrease in fiber strength.Eventually,under erosive conditions,parts of the corroded metal fibers detached,compromising the protective function and resulting in screen failure.关键词
防砂筛管/金属纤维/腐蚀失效/腐蚀Key words
sand control screen pipe/metal fibers/corrosion failure/corrosion分类
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刘金鑫,刘新锋,李良庆,常立莹..渤海某井用防砂筛管失效分析[J].焊管,2025,48(6):85-92,8.
