Compositions and methods for dissolving iron sulfide and inhibiting corrosion
By using a composition containing malic acid in the oil field equipment, the problem of removing hydrocarbons and iron sulfide deposits in the oil field is solved, and corrosion of metal surfaces is suppressed, achieving efficient cleaning and corrosion resistance.
Patent Information
- Application Number
- CN202380057865.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2022-08-31
- Filing Date
- 2023-07-25
- Publication Date
- 2025-03-18
AI Technical Summary
The presence of oilfield hydrocarbons and iron sulfide-based sediments in oilfield equipment leads to blockage of pipelines, and conventional detergents are difficult to effectively remove these sediments and cannot effectively inhibit metal surface corrosion.
A composition comprising malic acid or a salt thereof is provided for dissolving iron sulfide deposits in an aqueous medium and inhibiting corrosion of metal surfaces. The composition may optionally be added with organic solvents and resists, including imidazoline compounds, quaternary ammonium compounds and pyridinium compounds.
The composition is capable of effectively dissolving iron sulfide deposits, reducing corrosion risks, and maintaining its clean and corrosion resistance under various climates and processing conditions.