CORROSION INHIBITORS, SCAVENGERS & BIOCIDE DISPERSANT & DEFLOCCULANTS DEFOAMERS FLUID LOSS CONTROL ADDITIVES LUBRICANTS, SURFACTANTS & SPOTTING FLUIDS LOST CIRCULATION MATERIALS (LCM)& BRIDGING AGENT OBM PRODUCTS SHALE STABILIZER& FLOCCULANTS VISCOSIFIERS WEIGHTING MATERIALS