Research on corrosion status and anticorrosion measures of sewage pipeline in an oil field
The corrosion of the sewage pipeline in an western oil field is relatively serious,and the effect of applying anti-corrosion coating is poor.Therefore,based on the analysis of the sewage quality and the current situation of pipeline corrosion,the research on adding corrosion inhibitor to prevent corrosion is carried out.The results show that the content of chloride ion and scaling ion in the sewage of the target oilfield is high,and the sewage is weakly acidic,and the content of acidic gas CO2 is also high,which is easy to cause corrosion of the sewage pipeline.The corrosion rate at W-1 and W-4 of the site corrosion monitoring points is more than 1.5mm·a-1,and the corrosion rate at the other two monitoring points can also reach about 1.0mm·a-1.The pipeline corrosion phenomenon is relatively serious.With the increase of experimental temperature,the decrease of pH value of sewage and the increase of CO2 content in sewage,the corrosion rate gradually increases.The corrosion inhibitor HSR-1 has the better corrosion protection effect on the sewage pipeline.When the dosage of corrosion inhibitor HSR-1 reaches 60mg·L-1,the corrosion rate of sewage on the pipeline steel can be controlled below 0.076mm·a-1,which has a good corrosion protection effect.
NETL
NSTL
万方数据
维普
