普光气田集输管线防腐蚀技术研究

普光气田地处山区,地势险峻、地质条件极其复杂,且为高含硫化氢气田,其集输埋地管线已受到了严重的内外壁腐蚀。针对由于土壤的侵蚀带来的外壁腐蚀,研究了防腐涂层和阴极保护方法;针对主要是H_2S/CO_2腐蚀的内壁腐蚀,首先从抗硫管材上进行了选择,其次对缓蚀剂加注量进行了优化,同时采用腐蚀监测数据对比分析法,使管壁的腐蚀得到了防护和监控。

Technical research on anticorrosion of Puguang gathering transferring pipeline

Puguang gas field is located in a mountainous area,has a rugged hypsography and extremely complicated geological condition,mostly are hydrogen sulfide gas field,its buried gathering pipelines have got severe inner and outer wall corrosion. In view of the outer wall corrosion brought by erosion of soil,this paper researched the anticorrosion coat and cathodic protection method. In view of inner wall mainly H2S/CO2 corroded,firstly the selection was made from anti-sulfur pipeline material,secondly the optimization was made to the injection amount of the corrosion inhibitor,and the comparative analysis method of corrosion monitoring data was used.