Product Description

EvoTrol™ HT filtration control agent is a synthetic polymer designed to provide shale inhibition and fluid loss control in high-temperature, water-based drilling fluids. The product can be used in fresh or salt water to control fluid loss, build viscosity and protect hydratable solids from dispersion.

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  • Reduces potential for differential sticking
  • Increases efficiency of solids control equipment
  • Improves thermal stability of water-based drilling fluids


EvoTrol HT filtration control agent is non-fermenting and is highly effective in all types of water-based fluids. EvoTrol HT can be used for high-temperature fluid loss control and shale inhibition as it is thermally stable to 475°F (246°C).

Treatment Recommendation

General treatment recommendations of EvoTrol HT can range from 0.5-2.0 lb/bbl, based on salinity. Initial treatments are best determined by lab evaluation. This product can be mixed directly through the hopper.

Typical Physical Properties

AppearanceSolid, white powder
Specific Gravity1.44
Water SolubilitySoluble in water

Handling and Storage

Minimize exposure to dust. Store in a cool, dry, wellventilated area. Use appropriate hygiene, clothing and personal protective equipment suitable for work done. Review the SDS thoroughly before using this product.


EvoTrol HT filtration control agent is available in 25-pound (11.3-kilogram) multi-walled bags.

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