A method for the production of a lightweight magnesium...

Details A method for the production of a lightweight magnesium... A method for the production of a lightweight magnesium...

C - Chemistry, Metallurgy

09

K

C09K 8/80 (2006.01) E21B 43/267 (2006.01)

Patent

CA 2735643

The invention relates to oil and gas industry, i.e. techniques for making proppants designed to be used as propping agents in oil and gas recovery by the method of formation hydraulic fracturing. A method for the production of a lightweight magnesium silicate proppant, the method comprises heat processing of a magnesium-containing component - a source of magnesium oxide, its co-grinding with a silica- containing component, pelletizing of the batch prepared, sintering and sieving of the pellets prepared, wherein the batch comprises (in terms of calcined substance), in % by weight: SiO2 - 64-72, MgO - 11-18, natural impurities - remainder, wherein the heat processing is carried out at temperature not more than 1080 degrees C. A lightweight magnesium silicate proppant is characterized in that the proppant is produced by said method. At least one of the group: serpentine, brucite, caustic magnesite, talc may be used said magnesium--containing component. Said components may comprise serpentine gravel and quartz-feldspar sand at the following ratio, wt.%: serpentine gravel - 30 - 40, quartz-feldspar sand - 60 - 70. The sintering is performed at temperature 1140- 1190 degrees C.

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