Ceramic materials for use in the oil well 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, and for use as strengthening agents for subterranean formations

'agent':43 'ceram':1,14 'control':36 'format':46 'fractur':28 'gas':10,25 'gravel':31 'hydraul':27 'industri':12 'materi':2,33 'name':13 'oil':7,22 'oper':37 'pack':32 'pellet':15 'sand':35 'shot':16 'sphere':18 'strengthen':42 'subterranean':45 'use':4,20,40 'well':8,11,23,26

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