Solutions Guide
Benzalkonium Chloride as an Oilfield & Produced-Water Biocide
Benzalkonium Chloride is used for microbial control in oilfield produced water and water-injection systems, targeting sulphate-reducing bacteria (SRB) that drive souring and microbially-influenced corrosion. Vasudev Chemo Pharma supplies BKC 50% and 80% to oilfield-chemical formulators.
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Dosing and role
In produced-water and injection systems BKC is dosed at ~50–200 ppm active quat depending on bacterial load and system volume, applied as batch/slug treatment or continuous injection. It controls SRB and general aerobic/anaerobic bacteria, helping limit reservoir souring, biofilm and MIC in flowlines and injection wells.
Formulation
Oilfield-chemical companies formulate injection biocides at ~10%–40% BKC (from 80% concentrate). BKC is often alternated with other biocide chemistries for resistance management; confirm compatibility with corrosion inhibitors and scale inhibitors, and avoid anionic co-additives.
Frequently asked questions
What BKC dose is used in produced water?+
Typically 50–200 ppm active quat, by batch/slug or continuous injection, depending on bacterial load and system volume.
Does BKC control sulphate-reducing bacteria?+
Yes — it controls SRB and general bacteria, helping limit reservoir souring and microbially-influenced corrosion.
Is BKC compatible with other oilfield chemicals?+
It is generally compatible with corrosion and scale inhibitors; confirm case-by-case and avoid anionic co-additives that deactivate the quat.