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US 9,631,137 B2Granted
Ceramic particles and process for making the same
AssigneeSaint-Gobain Ceramics & Plastics, Inc.
InventorsTihana Fuss, Kevin R. Dickson, Walter T. Stephens
Life of this patent
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Abstract
A proppant for use in fracturing geological formations is made from bauxitic ores and a calcium containing compound. The proppant has a calcium containing crystalline phase.
Claims38
A proppant for use in fracturing geological formations, said proppant comprising:
- a. between 25 and 55 weight percent Al2O3, between 0 and 70 weight percent SiO2, at least 3 weight percent CaO, wherein all percentages are determined by x-ray fluorescence;
- and
- b. at least 5 weight percent of a calcium containing crystalline phase as determined by x-ray diffraction with an internal standard.
A proppant for use in fracturing geological formations, said proppant comprising:
- a. between 25 and 75 weight percent Al2O3, between 0 and 70 weight percent SiO2, at least 3 weight percent CaO, wherein all percentages are determined by x-ray fluorescence;
- b. at least 5 weight percent of a calcium containing crystalline phase as determined by x-ray diffraction with an internal standard;
- and
- c. a specific gravity that does not exceed 2.8 g/cc.
1 more element
Dependencies are inferred from the claim text.