Gilsonite LF
Drilling fluids agent Consatone ®

Filtration and fluid-loss control, stabilization of water-based or oil-based drilling fluids
Fluid loss reducing agent

Gilsonite LF is a high softening point agent used to effectively control fluid loss in oil-based drilling fluid systems.

The use of this agent positively impacts the temperature stability of solutions (up to 185 °C) and their rheological properties.

The agent is particularly recommended for use in weighted drilling muds where the increase in viscosity often seen with other fluid loss agents is undesirable.


Softening temperatures
> 177 °С

Ash content
< 18 %

Particle size
0–2 mm
Powder from brown to dark brown

25 kg three-layer paper bags with inner lamination or polypropylene bags with liner.

Fields of application and purpose

Promotes emulsion stability.

No significant effect on rheological properties.

Reduces mud filtration at high temperature and pressure.
Improves the quality of the filter cake.

Reduces the potential for differential sticking.

Rates and recommendations

Depending on the conditions of the wellbore and the required parameters of the system, the treatment can vary from 5 to 30 kg/m3.
The actual required concentrations should be determined after pilot testing.

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