8750 – 53 Ave NW, Edmonton AB, T6E 5G2
TEL: 780.468.4064 FAX: 780.469.1899
TOLL FREE: 800.661.2792
360, 800 – 6 Ave SW, Calgary AB, T2P 3G3
TEL: 403.265.4401 FAX: 403.269.5540
TOLL FREE: 800.661.1343
For MSDS see www.di-corp.com
Drilstar HT is a Premium Quality white cornstarch, which provides a rapid reduction of API
fluid loss at minimum concentrations.
White granular powder
5.0-7.0 (4% solution)
=47% @ (8.0 kg/m3)
Drilstar HT provides fluid loss control in all water based mud systems. In particular Drilstar
HT finds applications in high hardness, high pH, gypsum muds where bottom hole
temperatures are not excessive. Drilstar HT is effective to temperatures of 120ºC. Drilstar HT
performs best in an alkaline environment and will not increase the rheological properties of the
mud system in which it is used. In the absence of a high pH and/or high salinity a bactericide
such as T-352 should be used to prevent bacterial decomposition.
Drilstar HT is used in concentrations ranging from 8.0-25.0 kg/m3 depending somewhat on the
amount of drilled solids present in the mud system. Oxygen scavengers should be used to
reduce thermal degradation.
Caution: It has been demonstrated that produced crude oils can contain very persistent
bacterial strains that may cause fermentation problems in mud systems with susceptible
organic matter such as starch. Much larger treatment doses and/or addition of a secondary
biocide may be required when crude oil is added to these drilling fluids.
MIXING AND HANDLING
Drilstar HT mixes readily. It may be added through the hopper at rates of 5-10 minutes per
sack when required. It is advisable to use a dust mask while