Failure analysis and protection measures of pipelines in GY oilfield

Given the high failure rate problems of buffed pipelines in GY Oilfield, we carried out the analysis of failure status, failure causes, and corrosion failure mechanism. We also explored the corrosive influencing factors of CO 2 , bacteria, and other media, and put forward chemical anti-corrosion treatment measures. On this basis, the chemical anti-corrosion treatment measures are put forward. By injecting the composite corrosion and scale inhibitor into two oil wells on site, the corrosion perforation rate of oil gathering pipelines was reduced from 1 ~ 3 times/month to 0 ~ 1 times/month, and the wells were not inspected during the period of dosing due to corrosion and scaling, which has achieved the expected effect.