It is a natural occurring Gilsonite used for HTHP filtration control in invert oil / synthetic base systems at temperatures above 400 0F (205 0C).

It is compatible to all invert oil / synthetic base systems and can be used both in the initial formulation or for treatment while drilling.


Initial treatment in the range of 2 – 10 lb/bbl (5.71 – 28.53 kg/m3) is recommended, although higher concentrations may be necessary in extreme cases.

Pilot testing should be conducted to determine actual concentration needed in each case. If CONFI-TROL HT is to be added to a newly mixed mud prior to displacement, the addition should be made after all other components have been mixed thoroughly.