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Materials for measuring subterranean formations, namely, fluid loss non-chemical additives for fuels that can be detected and traced for measuring subterranean formations; materials for sensing geometries of propped fractures in subterranean formations, namely, fluid loss non-chemical additives for fuels that can be detected and traced for measuring geometries of propped fractures in subterranean formations

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 gravel pack materials for sand control operation, for use as strengthening agents for subterranean formations, for use as subterranean formation filling materials, for use as proppants for subterranean formations, for use as abrasive agents for subterranean formations, and for use as fluid loss additives for subterranean formations

Materials for measuring subterranean formations, namely, proppants and fluid loss chemical additives that can be detected and traced for measuring subterranean formations; materials for sensing geometries of propped fractures in subterranean formations, namely, proppants and fluid loss chemical additives that can be detected and traced for measuring geometries of propped fractures in subterranean formations; tracers, namely, chemical additives for fracturing fluid and for tracing subterranean formations, for use in oil and gas wells; materials for sensing flow back of proppants in subterranean formations, namely, proppants that can be detected and traced for sensing flow back of such materials in subterranean formations; materials for measuring subterranean formations, namely, gravel pack materials in the nature of proppants that can be detected and traced for measuring subterranean formations; materials for sensing geometries of propped fractures in subterranean formations, namely, gravel pack materials in the nature of proppants that can be detected and traced for measuring geometries of propped fractures in subterranean formations