Product Introduction PHPA Powder Rheology Modifier for Contaminated Drilling Fluids Cement, salt, hardness, drilled solids, and treatment residues can shift polymer response and create rapid rheology changes. BLUFLOC powder PHPA is described in the supplied family TDS as a water-soluble copolymer of anionic character used in drilling-fluid and selected oilfield applications. The four powder grades span very-high and ultra-high molecular-weight classes with medium or high