湿气管道内涂缓蚀剂防腐效果评价探讨

Discussion on the corrosion prevention effect evaluation of wet gas pipelines internal coated corrosion inhibitor

关键词:  管道  内涂缓蚀剂  效果  分析  川东气田

Key words:  pipeline  internal coated corrosion inhibitor  effect  analysis

摘要:

在天然气输送过程中,天然气中含有H2S、CO2、饱和水等,将对管道内壁造成腐蚀,因此,需要对管道内壁采取防腐措施。针对川东气田竹渠线输送特点、管道检测情况及管道内腐蚀状况,制定了内涂缓蚀剂防腐方案及防腐效果评价方法,并通过现场实施,得出了竹渠线缓蚀剂涂抹量及速度、周期及内涂防腐效果评价方法,以指导川渝天然气管道内防腐技术措施的制定,为川渝气田的安全开发提供技术支撑。

Abstract:

In natural gas pipeline transmission system,the internal corrosion of pipeline occurs due to H 2 S,CO 2 and saturated water.Therefore,the protection measures should be taken to the pipeline internal wall.Based on the transmission features,detection situation and internal corrosion condition of Zhuqu pipeline in Chuangdong gas field,the corrosion prevention scheme of internal coated inhibitor and the evaluation method are established,and the quantity of internal coated inhibitor,velocity,period and evaluation method are acquired through the field application of internal coated inhibitor.The thesis aims to guide the establishment of technical scheme for pipeline internal coated inhibitor corrosion prevention and to provide technical supporting for the safety development of Chuanyu gas field.