Overview
Microorganisms such as sulfate-reducing bacteria can generate corrosive byproducts, support biofilm formation, and contribute to souring and flow problems. In water handling and injection systems, this can translate into direct asset-integrity and operability risk.
Biocides are selected based on organism type, system chemistry, contact time, and whether the treatment objective is knockdown, maintenance control, or biofilm management.
Selection note: Sessile organisms protected inside biofilms often need a different treatment strategy from planktonic organisms measured in bulk water samples.
Typical Applications
- Water injection systems, including seawater injection for pressure maintenance
- Produced-water handling systems prone to MIC or sulfide generation
- Facilities experiencing biofouling, slime, or bacterial contamination
- Operations where microbial activity is affecting corrosion, flow, or water quality
Operational Considerations
- Oxidizing and non-oxidizing biocides each have different compatibility and performance profiles.
- Treatment should consider oxygen level, water chemistry, residence time, and downstream materials.
- Monitoring should combine microbiological testing with operational observations such as fouling and corrosion trend.