理化检验-物理分册2025，Vol.61Issue(12)：62-66,5.DOI:10.11973/lhjy-wl240264
某气田集输管道腐蚀原因
Causes of corrosion of gathering pipeline in a gas field
ZHAO Chunyu 1SONG Yang 2YOU Jiaqing 1LI Yaying 1JIANG Feng 1ZHAO Xing 1GUO Qianqian 1LI Yancheng 1LEI Haoran1
作者信息
- 1. The 11th Oil Production Plant,Changqing Oil field Branch,PetroChina Company Limited,Qingyang 745000,China
- 2. Xi'an Maurer Petroleum Engineering Laboratory Co.,Ltd.,Xi'an 710065,China
- 折叠
摘要
Abstract
The corrosion occurred in the gathering pipeline of a gas field.The causes of pipeline corrosion were analyzed by means of macroscopic observation,chemical composition analysis,mechanical property test,scanning electron microscopy and energy spectrum analysis,and X-ray diffraction analysis.The results show that the gas transported by the pipeline contained water,CO2 and H2S,and liquid accumulation occurred in the low-lying parts of the pipeline.Under the combined action of CO2 and H2S gas,serious hydrogen evolution corrosion occurred in the pipeline.Under the action of higher concentration of H2S,the corrosion products were loose and did not protect the metal matrix.The corrosion process was mainly controlled by H2S.The high concentration of Cl-accelerated the dissolution rate of Fe and further promoted the corrosion process.The ions in the aqueous solution could also increase the conductivity and increase the corrosion current density.关键词
L360QS管线钢/CO2/H2S/析氢腐蚀Key words
L360QS pipeline steel/CO2/H2S/hydrogen evolution corrosion分类
通用工业技术引用本文复制引用
ZHAO Chunyu,SONG Yang,YOU Jiaqing,LI Yaying,JIANG Feng,ZHAO Xing,GUO Qianqian,LI Yancheng,LEI Haoran..某气田集输管道腐蚀原因[J].理化检验-物理分册,2025,61(12):62-66,5.
