Product Introduction PHPA Drilling Polymer Powder for Low-Permeability Mud Cake A thin, low-permeability cake can reduce filtrate invasion, while a thick or sticky cake can raise torque and differential-sticking risk. 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