BYK manufactures several lines of additives that can be used to modify the properties of drilling fluids. The additives can be used in oil-based drilling fluids as the primary viscosifying agents and as suspension agents. BYK has a variety of additives to modify the rheological properties of a wide host of base oils to include diesel, mineral oil, polyalphaolefins, linear alpha olefins, internal olefins, linear paraffins, linear alkyl benzene and others. We also offer a wide range of anti-foam and defoaming additives for water-based drilling fluids, mud thinners, liquid rheology modifiers, H2S scavengers for both water and oil-based muds and dispersing and expansion additives for cement.