SINTERED, SPHERICAL, COMPOSITE PELLETS PREPARED FROM CLAY AS A MAJOR INGREDIENT USEFUL FOR OIL AND GAS WELL PROPPANTS

摘要

SINTERED SPHERICAL PELLETS CONTAINING CLAY AS A MAJOR COMPONENT USEFUL FOR GAS AND OIL JELL PREAPPOINTS Sintered, spherical composite pellets or particles comprising one or more clays as a major component and bauxite, alumina, or mixtures thereof, are described, along with the process for their manufacture. The pellets may have an alumina-silica (Al2O3-SiO2) ratio from about 9:1 to about 1:1 by weight. The use of such pellets in hydraulic fracturing of subterranean formations is also described.