PURESTAR Chloride Free System


PURESTAR provides the performance of invert emulsion systems while minimizing overall environmental impact through the use of a readily biodegradable non-aqueous base fluid and the elimination of added chlorides in the internal phase. Using a polyol, water activity
is managed at similar levels t0 a conventional invert emulsion without the requirement for elevated salinity.


  • Invert emulsion performance and benefits with reduced health, safety, and environmental concerns
  • Improved biodegradation characteristics versus conventional and synthetic invert emulsions containing chlorides
  • Eliminates handling of calcium chloride and reduces lime consumption over 50%


  • Sensitive areas, such as near waterways or residential areas
  • Locations seeking to reduce waste and water consumption versus water-based drilling fluids
  • Operations seeking goodwill with landowners

System Brochure