摘要
针对充气钻井中钻具的腐蚀,研究了3.5%NaCl溶液中氧含量对G105钢腐蚀行为的影响。失重实验结果表明:G105钢在卤水中主要发生氧腐蚀,腐蚀速率与氧含量有关;不同充气条件下其在3.5%NaCl溶液中的腐蚀规律受温度和氧含量的影响,并与氧含量之间有线性关系。
Aimed at the corrosion of G105 drill pipes in aerated drilling fluids, the impact of dissolved oxygen of 3.5% NaCl solution on the corrosion behavior of G105 steel was studied using weight loss method.The tests revealed that the corrosion of G105 steel in brine was considered as oxygen corrosion; the temperature and dissolved oxygen affected the corrosion rate of G105 steel in aerated 3.5% NaCl solution：at the same temperature ,the corrosion rate increasing with the content of dissolved oxygen;at the same aerated condition ,the corrosion rate increased when the temperature was elevated from 25 ℃ to 65℃ and reached the maximum at 65℃.The corrosion rate of the G105 steel and dissolved oxygen of 3.5%NaCl solution obeyed linear relationship.
出处
《中国腐蚀与防护学报》
CAS
CSCD
北大核心
2008年第2期108-111,共4页
Journal of Chinese Society For Corrosion and Protection
关键词
充气
氧腐蚀
G105钢
腐蚀规律
aerated fluids , oxygen corrosion, G105 steel, corrosion regulation
