集输管线钢在CO2/油/水多相流环境中的腐蚀行为
Corrosion Behavior of Gathering Pipeline Steel in the CO2/Oil/Water Corrosive Environment
摘 要
设计正交试验，采用失重法在高温高压反应釜中研究X65钢在CO2/油/水多相流环境中的腐蚀行为。结果表明：原油含水率为集输管线钢CO2腐蚀的主控因素，对腐蚀速率的影响显著；X65钢腐蚀产物膜晶粒呈胞状颗粒堆积，堆积不紧密且存在空隙，与基体结合松散，对基体保护作用弱，试样表面呈现均匀腐蚀形态，局部存在点蚀坑，X65钢抗CO2腐蚀性能较差；原油低含水率与高含水率时X65钢表面腐蚀膜的组成基本相同，都主要是FeCO3和Fe。
CO2
腐蚀行为
影响因素
gathering pipeline steel
CO2
corrosion behavior
influencing factors
Abstract
The corrosion behavior of X65 steel in CO2/oil/water corrosive environment was studied by the methods of orthogonal experiment and weight loss test in a high temperature and high pressure autoclave. The results show that water cut is the major corrosion factor of X65 steel, which can affect the corrosion rate significantly. The grains of corrosion product film were cellular, and their accumulation was uncompacted. The film had loose structure, its protection effect for the matrix was weak. The steel surface was covered by corrosion scales uniformly and exhibited general corrosion morphology with corrosion pits in some local places, the resistance to CO2 corrosion of X65 steel was comparatively poor. Both at low and high water cut, the corrosion products were basically the same, mainly contained FeCO3 and Fe.
中图分类号 TG172.9 DOI 10.11973/fsyfh-201703010
所属栏目 试验研究
基金项目 国家重大科技专项（2011ZX05017-004）
收稿日期 2015/9/19
修改稿日期
网络出版日期
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引用该论文: BAI Yu,LI Zi-li,CHENG Yuan-peng. Corrosion Behavior of Gathering Pipeline Steel in the CO2/Oil/Water Corrosive Environment[J]. Corrosion & Protection, 2017, 38(3): 204
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参考文献
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【4】张清,李全安,文九巴,等. 温度与油管CO2/H2S腐蚀速率的关系[J]. 焊管,2004,27(4):16-18.
【5】ZHANG Q,LI Q A,WEN J B,et al. Temperature and CO2/H2S corrosion rate of oil tube steels[J]. Welded Pipe and Tube,2004,27(4):16-18.
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【7】DUGSTAD A. Fundamental aspects of CO2 metal loss corrosion-Part I:mechanism[C]//Corrosion 2006,Houston:NACE International,2006:06111.
【8】NORDSVEENM,NESIC S,NYBORG R,et al. A stangeland,a mechanistic model for carbon dioxide corrosion of mild steel in the presence of protective iron carbonate films-Part 1:theory and verification[J]. Corrosion,2003,59(5):443-456.
【9】LIN G,ZHENG M,BAI Z,et al. Effect of temperature and pressure on the morphology of carbon dioxide corrosion scales[J]. Corrosion,2006,62(6):501-507.
【10】VERSTAK A,BARANOVSKIV. Critical factors of coatings performance in kraft pulping digesters[C]//Corrosion 1999.Houston:NACE International,1999:99286.
【11】LAGAD V,SRINIVASAN S,KANE R D. Software system for automating internal corrosion direct assessment of pipelines[C]//Corrosion 2004.Houston:NACE International,2004:04197.
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【14】NESIC S. Effects of multiphase flow on internal CO2 corrosion of mild steel pipelines[J]. Energy Fuels,2012(26):4098-4111.
【15】ELIYAN F F,MOHAMMADI F,ALFANTAZI A. An electrochemical investigation on the effect of the chloride content on CO2 corrosion of API-X100 steel[J]. Corrosion Science,2012(64):37-43.
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【17】KING M B,MUBARAK A,KIM J D,et al. The mutual solubilities of water with supercritical and liquid carbon dioxide[J]. The Journal of Supercritical Fluids,1992(5):296-302.
【18】CHOI Y S,NESIC S. Corrosion behaviour of carbon steel in supercritical CO2-Water Environments[C]//Corrosion 2009.Houston:NACE International,2009:09256.
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