摘要
川渝页岩气田某区块站内管道腐蚀穿孔,影响站场正常运行,维修难度大,风险高,安全环保压力大。为此,通过对输送介质、腐蚀产物理化实验分析,结合环路模拟试验明确了管道腐蚀主要原因:微生物腐蚀造成的电化学腐蚀为主,CO_(2)腐蚀为辅,同时冲刷作用导致弯头穿孔加剧。通过缓蚀杀菌剂加注、抗菌钢管更换及除砂器优选等综合治理措施,实现了对集气站内管道腐蚀穿孔的有效控制,保障了站场的正常运行,对页岩气田安全、稳定、高效开发及可持续发展具有重要意义,为国内外同类型气田开发中腐蚀问题的处理提供了参考。
Corrosion and perforation of pipelines in a block of Sichuan-Chongqing shale gas field affects the normal operation of the station,posing challenges to maintenance,resulting in high risks and putting pressures on safety and environmental protection.Therefore,through the physical and chemical experimental analysis of the transmission medium and corrosion products,combined with the loop simulation test,it is clear that the main cause of pipeline corrosion is electrochemical corrosion resulted from microbial corrosion,supplemented by CO_(2)corrosion.At the same time,elbow perforation is aggravated by scouring.Through measures such as corrosion inhibitor and bactericide injection,antibacterial steel pipe replacement and optimization of desander,the effective control of pipeline corrosion and perforation in gas gathering station is achieved,and the normal operation of the station can be guaranteed.The result is of great significance to the safe,stable,efficient and sustainable development of shale gas field,and provides reference for addressing corrosion issues in the development of gas fields of the same nature both at home and abroad.
作者
黄祥峰
HUANG Xiangfeng(Sinopec Jianghan Petroleum Engineering Design Co.,Ltd.,Wuhan,Hubei,430200,China)
出处
《天然气与石油》
2022年第1期94-101,共8页
Natural Gas and Oil
关键词
站内管道
页岩气
微生物腐蚀
缓蚀剂
抗菌钢管
除砂器
Station piping
Shale gas
Microbial corrosion
Corrosion inhibitor
Antibacterial steel pipe
Desander
