摘要
长庆油田重点腐蚀区单一内防腐蚀技术无法满足现场需要。本工作介绍了长庆油田低合金耐蚀管材的优选,通过室内高温高压试验和现场挂环试验,对其耐蚀性进行了评价,并在油田现场实现了规模应用。结果表明:各因素中温度对腐蚀速率影响最大,相同腐蚀条件下,宝钢和包钢生产的5Cr低合金耐蚀钢的平均腐蚀速率和局部腐蚀速率较N80钢分别低50%以上和40%以上,其预测寿命可达10a,5Cr低合金钢是有效降低长庆油田重点腐蚀区域局部腐蚀且经济的选材方案。
Single internal anti-corrosion technology in key corrosion areas of Changqing oilfield cannot meet the needs of on-site. This paper introduced the optimization of low alloy corrosion-resistant pipe in the oilfield, which evaluated the corrosion resistance through indoor high temperature and high pressure test and field hanging ring test, and realized large-scale application on-site. The results showed that temperature had the greatest effect on the corrosion rate. Under the same corrosion conditions, the average corrosion rate and local corrosion rate of 5Cr low alloy corrosion resistant steel produced by Baosteel and Baotou Steel was lower than those of N80 steel by more than 50% and 40%, respectively, and its predicted life could reach 10 years. 5Cr low alloy corrosion resistant steel is an effective and economical material selection scheme to reduce local corrosion in key corrosion areas of Changqing oilfield.
作者
郭钢
刘广胜
王小鹏
李琼玮
杨利华
孙雨来
周志平
GUO Gang;LIU Guangsheng;WANG Xiaopeng;LI Qiongwei;YANG Lihua;SUN Yulai;ZHOU Zhiping(National Engineering Laboratory of Low Permeability Oil and Gas Field Exploration and Development,Shannxi 710018,China;Research Institute of Oil and Gas Technology,PetroChina Changqing Oilfield Company,Shannxi 710018,China;No.7 Oil Production Plant,PetroChina Changqing Oilfield Company,Shannxi 710018,China;PetoChina Changqing Oilfield Company,Shannxi 710018,China)
出处
《腐蚀与防护》
CAS
北大核心
2022年第12期83-87,共5页
Corrosion & Protection
关键词
长庆油田
防腐蚀技术
低合金耐蚀钢
现场应用
Changqing oilfield
anticorrosion technology
low alloy corrosion resistant steel
field application