Asset Integrity
BIOCIDE
MANAGING MICROBIOLOGICAL ACTIVITY
Wherever water is present there will always be the threat of bacterial activity. Left unmanaged, bacterial colonies grow logarithmically, seriously impacting water injection and production processes.
Microbiocides
The best approach is to have an effective preventative program in place from day one-controlling potential activity that may otherwise result in slime formation, microbial influenced corrosion (including pitting/under deposit corrosion), injectivity index impairment, reservoir souring (Where seawater is used as the secondary recovery mechanism) and formation of pyrophoric scale within the production train due to the presence of H2S.
Microbiocides fall into three fundamental categories: those that penetrate the cell and denature the protein (e.g. aldehydes), those that coat the membrane and block the passage of nutrients across the cell wall (e.g. cationic surfactants), and those that lyse the cell wall (e.g. oxidizing biocides).
Microbiocides can be broken down further into two main sub-categories: inorganic and organic. Inorganic microbiocides are cost-effective disinfectants used in all types of industrial systems, while organic microbiocides are a less corrosive option and can be used in combination with inorganic alternatives, or as the sole treatment.
Microbiocide products
DESHI Group provides a range of specialty chemicals designed to control a broad spectrum of anaerobic and aerobic bacteria, particularly sulfate-reducing bacteria (SRB) for water injectionm produced-water, and cooling-water systems. These products are effective both by their microbiocidal activity and by chemically modifying the environment to prevent harmful bacterial activity.
Typical oilfield applications include water injection systems, process systems, fuek systems, stagnant water masses, and potable water systems.