One example of this dynamic is the application of our water-soluble products, which play an important role in the prevention of penetration and fluid loss in oil field applications used under a variety of extreme formation conditions. Our polyvinyl alcohol (PVOH) and vinyl acetate copolymers (VAEs) have been used successfully for many years to prevent fluid loss in oil field cementing and gas migration control. PVOH even offers lower costs and greater cement compatibility than other fluid loss additives.