Water Treatment Applications

Leading the industry in conditioning oilfield water through innovative, environmentally friendly, Chlorine Dioxide treatments and other treatment alternatives.

Chlorine dioxide (ClO2) is a chemical with many uses in the oilfield including: sanitizing frac water, SWD systems treatment, well / pit / tank clean-up and water flood treatment.  ClO2 is an environmentally friendly biocide, scale inhibitor, water disinfectant and biofilm control agent. It is used in areas from municipal water treatment, pulp bleaching, food sanitization, cooling water systems and oilfield applications.

ClO2 Advantages

  • Selective oxidant with low corrosion profile
  • Does not form colloidal sulfur
  • Effective biocide over broad set of conditions
  • Kills all bacteria, removes biomass
  • Improves oil recovery
  • Improves SWD skim oil quality by removing sulfides
  • Controls H2S in tank headspace
  • Improves well production / injection rates by removing well bore contamination
  • Reduces corrosion by removing H2S I FeS



ClO2 can be used in FRAC operations to disinfect the frac fluid before being sent downhole. Such treatment mitigates  issues with bacteria, iron sulfide, and H2S from the beginning. This treatment ensures better quality oil production and higher return on investment due to lower equipment maintenance costs.

Pits & Tanks

Sterilize and disinfect water in pits or tanks. ClO2  can be used on produced water as well to clean it so it can be reused many times before needing to be replenished.


ClO2  will help break up any oil/water emulsions in the holding tanks of SWD systems for better separation. If bacteria and iron sulfide are causing well injection pressures to rise, ClO2  can be used to destroy the bacteria and break up the iron sulfide, thereby lowering well injection pressure. This can be done on a treatment schedule or at each truck offloading. Keeps storage tanks clean in the process.

Downhole (Production)

ClO2  can be used on wells currently in production to remediate problems with bacteria, iron sulfide, H2S and scaling. ClO2  treatment will help maintain the casing, tubing, and wellhead.   It will help produce better quality oil as the ClOremoves existing bacteria from the formation.


Other Oxidizers

Aegis has the experience and understanding of applying other oxidizers as disinfectants to treat oilfield water particularly for use as frac fluid. These include peracetic acid (PAA) and bleach.