MANUFACTURING METHOD OF CERAMIC PROPPANT, AND PROPPANT ITSELF Russian patent published in 2013 - IPC C09K8/80 C04B35/622 

FIELD: oil and gas industry.

SUBSTANCE: invention refers to oil and gas industry, and namely to the manufacturing procedure of ceramic proppants intended to be used as propping agents at production of oil or gas using the formation hydraulic fracturing method - FHF. In the manufacturing method of ceramic proppant, which involves grinding of initial charge components, preparation of slurry, introduction of an additive to it, supply of suspension to a tower spray-type drying oven - TSDO, formation of granules and their heat treatment, there used is slurry containing 69-85 wt % of solid component and additive in quantity of 0.1-2.0% of the solid component weight, which consists of surface-active substance - SAS and a binding agent, formation of granules is performed by dispersion of slurry at its supply to TSDO through at least one calibration orifice at the outlet pressure of 30-450 bar or on the disc placed in TSDO and rotating at the speed of 3000-9000 rpm. Proppant is obtained by means of the above method. Invention is developed in dependent claims.

EFFECT: improvement of proppant roundness and sphericity properties; simplification of the procedure.

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