C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
C09K 8/80 (2006.01) C04B 35/44 (2006.01) C04B 35/64 (2006.01) C04B 38/06 (2006.01) E21B 43/267 (2006.01)
Patent
CA 2608857
Sintered, spherical composite pellets having high strength and low density, are described, along with processes for their manufacture. One method includes forming a green pellet from a mixture of clay, bauxite or a clay-bauxite mixture with a sacrificial phase such that upon sintering of the pellet, the sacrificial phase is removed from the pellet. The use of such sintered pellets in hydraulic fracturing of subterranean formations is also described.
La présente invention concerne des granules composites sphériques frittés ayant une forte résistance et une faible densité, ainsi que leurs procédés de fabrication. Un procédé comprend la formation d~un granule vert à partir d'un mélange d'argile, de bauxite ou d'un mélange d'argile et de bauxite avec une phase sacrificielle de telle sorte qu~après le frittage du granule, la phase sacrificielle soit éliminée du granule. La présente invention concerne également l~utilisation de tels granules frittés dans la fracturation hydraulique de formations souterraines.
Canova Steve
Krause Claude A.
Carbo Ceramics Inc.
Gowling Lafleur Henderson Llp
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