PREMag H is a post set expansion additive developed for use at temperatures above 170°F (76.7°C). PREMag H additive helps control microchannels, which provide a pathway for interzonal communication. The expansion provided by PREMag H additive develops as a function of temperature, which accelerates expansion.
PREMag M Cement Additive is a chemical expansive additive developed for use at temperatures from 100° to 210°F (37°C to 99°C). PREMag M offers both In-Situ Expansion as well as Post Set Expansion with lower loading levels than traditional alternatives, and provides early strength development and shortens Static Gel Strength Time. Its expansion properties help to provide a better bond and shrinkage control prevents the possibility of channeling. PREMag-M also has some very desirable secondary effects, including improvements in Fluid Loss and Free Fluid properties.