Classification Information
Ceramic materials for use in the oil and gas well industry, namely, ceramic pellets, shots, and spheres for use in oil well and gas well hydraulic fracturing and as a gravel pack materials for sand control operation, and for use as strengthening agents for subterranean formations, subterranean formation filling materials, proppants, abrasive agents for subterranean formations, fluid loss additives for subterranean formations, materials for measuring subterranean formations
Nonmetallic Building Materials