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DESCO® Deflocculant

Desco® Deflocculant is a proprietary tannin-based product used for rheology control in water-based drilling fluids. It is readily soluble over a wide range of temperatures and is effective in low concentrations without requiring the use of caustic soda.


  • Maximum deflocculation and shear strength reduction at low concentrations
  • 4 to 8 times more effective than lignosulfonates, depending on conditions
  • Soluble in systems of high salinity, high hardness and any pH
  • Scavenges oxygen and inhibits corrosion
  • High-temperature rheology control; proven effective in excess of 400 °F (204 °C)
  • Solution pH is approximately 8.5. No Caustic Addition is required to activate the product
  • Reduces the effects of cement contamination