Low density proppant

Details Low density proppant Low density proppant

C - Chemistry, Metallurgy

04

B

C04B 35/64 (2006.01) C01F 7/30 (2006.01) C09K 8/80 (2006.01) E21B 43/267 (2006.01)

Patent

CA 2444826

A low density, spherical proppant made from kaolin clay having an alumina content distributed homogeneously throughout the pellets, an apparent specific gravity of from about 1.60 to about 2.10 g/cc, and a bulk density of from about 0.95 to about 1.30g/cc. The low density is achieved by controlling the time and temperature of the firing process to be from about 1200 to about 1350°C. This low density proppant is useful in hydraulic fracturing of shallow oil and gas wells.

La présente concerne un agent de soutènement sphérique de faible densité fabriqué à partir de kaolinton ayant un contenu d'alumine homogène dans toutes les granules, une densité d'environ 1,60 à 2,10 g/cc, et une densité apparente d'environ 0,95 à 1,30 g/cc. Cette faible densité est rendue possible par le contrôle du moment et de la température du processus pyrognostique, laquelle est comprise entre 1 200 et 1 350 degrés celsius. Cet agent de soutènement à faible densité est utile pour la fracturation hydraulique des puits de gaz et de pétrole peu profonds.

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