RAW MATERIALS RANGE GUIDE Dispersants/Deflocculants Oil & Gas → Drilling → Dispersants / DeflocculantsBisley International supplies a range of dispersants and deflocculants used in the Oil & Gas industry. Dispersants and deflocculants work by reducing the viscosity of the drilling mud. For more information on products, get in touch today.PolyphosphatesPolyphosphates such as Disodium pyrophosphate and Tetrapotassium pyrophosphate are strong dispersants in freshwater mud systems. Tetrapotassium Pyrophosphate TDS LignosulfonatesLignosulfonates are effective drilling mud dispersants in clay-based muds. Bisley supplies sodium lignosulfonate. PolyacrylatesPolyacrylates are best utilized in soft water drilling muds with low salinity to achieve a high level of dispersion. Bisley supplies sodium polyacrylate.