... weighting agent in drilling, work over and completion fluids. CaCO3 powder / calcium carbonate (F,M,C)1. Advantages1)Acid-soluble, high-purity ... measure. For depleted zone drilling or induced fracture applications, Calcium Carbonate is most effective when used in combination with Graphite additive ... Range (BSS mesh)Coarse30-80 MeshFine300 MeshesMedium150 Meshes CaCO3 powder calcium carbonate F,M,C