Investigation of service life and corrosion mechanism of tubing in production well on polymer flooding,Corrosion Engineering, Science and Technology

当前位置： X-MOL 学术 › Corros. Eng. Sci. Technol. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Investigation of service life and corrosion mechanism of tubing in production well on polymer flooding
Corrosion Engineering, Science and Technology ( IF 1.8 ) Pub Date : 2020-06-03 , DOI: 10.1080/1478422x.2020.1770414
Dezhi Zeng ₁ , Zhiming Yu ₁ , Baojun Dong _{1,

2} , Haixin Zhang ₁ , Huiyong Yu ₃ , Gang Tian ₃ , Yonggang Yi ₃

Affiliation

ABSTRACT The corrosion behaviour and the remaining safe service life of tubing in simulating production well of polymer flooding in Xinjiang oilfield which located in China was investigated using weight loss measurement and surface characterisation. The results showed that as the chloride ion concentration, temperature and H2S content increased, the corrosion rate of N80 steel gradually increased in the hydrolysis of anionic polyacrylamide (HPAM)/H2S/CO2 environment. The tubing of production well met the requirements of oilfield in polymer flooding. The corrosion scales had two layers: the outer O-rich layer and the inner S-rich layer. The chloride ion concentration and temperature affected the location and the thickness of the S-rich layer. The corrosion scales of N80 steel were composed of FeS, FeS2, FeCO3. Polyacrylamide adsorbed on the surface of steel to form a network film blocked the contact between metal and solution and then inhibited the anodic dissolution of metal.

更新日期：2020-06-03

点击分享查看原文

点击收藏

阅读更多本刊最新论文

全部期刊列表>>