HR®-5 Retarder

HR®-5 additive is a chemically modified lignosulfonate that retards the setting of cement. It is designed for use in wells with circulating temperatures between 125°F (52°C) and 206°F (97°C) – 290°F static (143°C).

HR-5 additive is compatible with the following:

  • Fresh or saltwater slurries
  • Most cement additives
  • All API cements
  • Bentonite cement
  • Pozmix® A cement

HR-5 additive provides the following benefits:

  • Increased concentrations of HR-5 additive enhance the predictability of cement thickening times.
  • Decreases the danger of over-retarded slurries at the top of a long cement column.
  • Provides early cement strength development.
  • Helps displace slurries at high rates while maintaining formation pressure.

HR®-5 Retarder

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