Overview
Even small amounts of dissolved oxygen can accelerate corrosion in pipelines, vessels, and injection systems. Oxygen scavengers are used to chemically reduce oxygen content and protect water-wet equipment from rapid deterioration.
These treatments are especially relevant in seawater injection, hydrotesting, stimulation support, and other water services where oxygen ingress is difficult to eliminate mechanically.
Selection note: Chemical oxygen removal is most effective when supported by good deoxygenation practice and appropriate monitoring of residual dissolved oxygen.
Typical Applications
- Seawater and injection-water treatment systems
- Hydrotesting and temporary water-fill operations
- Acid stimulation or workover support fluids
- Facilities where dissolved oxygen contributes to corrosion byproducts and solids formation
Operational Considerations
- Target oxygen residual and required contact time should be defined before program design.
- Chemistry selection depends on water quality, temperature, and system compatibility.
- Programs should be evaluated against corrosion control, solids behavior, and operational practicality.