ThinStar is a highly efficient, thermally‐stable thinner and surface-active agent that removes bentonite clays from the bottom hole assembly.

It is primarily used to prevent bit balling and mud rings. ThinStar also helps to free stuck pipe because it will dissolve sticky clays. It can also be used to thin most drilling fluids.


  • Geotechnical drilling
  • Geothermal drilling
  • Exploration drilling


  • Highly concentrated
  • Stabilises clay and mudstone formations
  • Compatible with most drilling fluids additives
  • Can be used with foam to help stabilise loose formations
    and improve cuttings carrying
  • Improves core recovery