Overview
Internal corrosion remains one of the most persistent integrity risks in oil and gas systems, especially where acid gases, produced water, and varying temperatures create an aggressive environment. Corrosion inhibitors help by forming a protective film on metal surfaces.
Selection depends on fluid composition, water cut, flow regime, metallurgy, temperature, and shear conditions. A fit-for-purpose program can extend equipment life while reducing failure risk and intervention costs.
Selection note: Corrosion control chemistry should always be validated against realistic field conditions using appropriate laboratory or flow-based performance testing.
Typical Applications
- Production wells and gathering systems exposed to CO2 or H2S corrosion
- Flowlines and export lines with water-wet internal surfaces
- Gas compressor and processing systems needing vapor-phase or specialty protection
- HPHT applications where film persistence is critical
Operational Considerations
- Testing may include static, shear, autoclave, or loop-style evaluations depending on service severity.
- Corrosion inhibitor performance should be reviewed alongside solids, scale, and fouling behavior.
- Residual monitoring and corrosion surveillance are needed to confirm field protection.