Product Description

NewLig™ filtration control agent and fluid thinner is a powdered leonardite (lignite) effective in water-based drilling fluids, including high-calcium and monovalent cations.

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The NewLig additive delivers superb fluid loss control properties at elevated temperatures and highly efficient control over viscosity and gel strengths.


NewLig filtration control agent is effective in water-based drilling fluids containing up to 15,000 mg/L chlorides and in temperatures in excess of 400°F (204°C). It is also an emulsifier for oil-in-water emulsions.

Treatment Recommendation

Initial treatments are best determined by pilot testing. The NewLig additive is effective at low treatment levels, with normal concentrations at 2-5 lb/bbl. Thinning effectiveness diminishes at a pH below 9.0 and with chlorides concentrations greater than 15,000 mg/L.

Typical Physical Properties

AppearanceBrown powder
pH4.5, max
Soluble (pH dependent)Soluble (pH dependent)

Handling and Storage

Avoid breathing dust. Avoid contact with skin and eyes. Use appropriate hygiene, clothing and personal protective equipment suitable for work being done. Review the SDS thoroughly before using this product.


NewLig filtration control agent is available in 50-pound (22.7-kilogram) multi-walled bags.

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