摘要
目的:针对高含硫环境下井控阀门易发生腐蚀、氢渗透及裂纹扩展的问题,评估材料与制造技术对阀门寿命的控制效果。方法:建立腐蚀动力学、氢渗透及裂纹扩展耦合仿真模型,结合现场监测数据,分析关键制造与防护技术对阀门腐蚀速率、氢渗透、裂纹扩展及失效概率的影响。综合制造和防护技术明显提高了高含硫井控阀门的安全性和可靠性,对油气田阀门的设计和全寿命管理具有借鉴意义。
Objective:To evaluate the control effect of materials and manufacturing techniques on the service life of well control valves in response to the problems of corrosion,hydrogen permeation and crack propagation that are prone to occur in well control valves under high sulfur content environments.Through various means such as optimizing the material,applying surface coatings,conducting heat treatment,and strengthening welding,the corrosion rate and hydrogen penetration rate were successfully slowed down,thereby delaying the further expansion of cracks.The cumulative failure probability of the valve within a five-year service life is effectively controlled within 55%,and at the same time,both the opening and closing torque and the failure rate are maintained at a manageable level.Conclusion:The integrated manufacturing and protection technologies have significantly enhanced the safety and reliability of highsulfur well control valves,providing reference significance for the design and full life cycle management of oil and gas field valves.
作者
张晋
张晓磊
王艳成
ZHANG Jin;ZHANG Xiao-lei;WANG Yan-cheng(Dongying Industrial Product Inspection and Metrological Verification Center,Dongying 257000,China)
出处
《全面腐蚀控制》
2026年第1期335-337,共3页
Total Corrosion Control
关键词
高含硫环境
井控阀门
腐蚀防护
氢渗透
寿命评估
high sulfur content environment
well control valves
corrosion protection
hydrogen permeation
life assessment
