Thiophene-imidazoline derivatives with varying chain lengths modified by organic acids as corrosion inhibitors for carbon steel in the CO₂-saturated oilfield produced water.

ABSTRACT: The dissolution of CO₂ in oilfield produced water causes severe pipeline corrosion and economic losses, highlighting the critical need for medium-high temperature corrosion inhibitors for carbon steel protection. Imidazoline derivative corrosion inhibitors S4-C7 (thiophene-imidazoline octanamide), S4-C9 (thiophene-imidazoline decanamide), S4-C11 (thiophene-imidazoline lauramide) and S4-C13 (thiophene-imidazoline myristamide) with different carbon chain lengths were synthesized by modifying thiophene-imidazoline with different organic acids. At medium-high temperatures, weight loss measurements, electrochemical tests, surface morphology analysis, and theoretical calculations were employed to investigate their inhibition performances and mechanisms in CO₂-containing sol

SUBMITTER: Jia S 

PROVIDER: S-EPMC12406301 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature