Ultralow-density high-strength vitrified china ball proppant and preparation method thereof

An ultra-low density, vitrified ceramic ball technology, applied in chemical instruments and methods, earthwork drilling, drilling composition, etc. Reduce and other problems to achieve the effect of reducing density, reducing product density and increasing strength

Inactive Publication Date: 2017-06-23
山东雅丽支撑新材料科技有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the alumina content becomes too low, the strength of the proppant tends to decrease, which means that it is not possible to obtain an inorganic material proppant with high strength at the same time of ultra-low density
[0019] (3) Due to the high density of traditional proppants, it is necessary to prepare high-viscosity fracturing fluids to carry proppants of corresponding strength and density during the fracturing process (especially deep fracturing), which causes great pollution to the formation and the surrounding environment

Method used

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  • Ultralow-density high-strength vitrified china ball proppant and preparation method thereof
  • Ultralow-density high-strength vitrified china ball proppant and preparation method thereof
  • Ultralow-density high-strength vitrified china ball proppant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0142] Embodiment 1 A kind of preparation method of ultra-low-density high-strength vitrified ceramic ball proppant

[0143] Accurately weigh 2.1Kg of fumed silica, 8Kg of kaolin, 4Kg of boric acid, 2Kg of aluminum sulfate, 2Kg of magnesium nitrate, 1.3Kg of sodium carbonate, and 10g of polyethylene oxide with an electronic scale.

[0144] Dissolve boric acid, aluminum sulfate, magnesium nitrate, and sodium carbonate in 60Kg of water with stirring, then add kaolin and fumed silica to the above solution and stir evenly, and finally add 10g of polyethylene oxide

[0145] Transfer the above slurry into a homogenization equipment for homogeneous dispersion, use a laser particle size analyzer to detect the particle size in the slurry to D50=5μm, then spray dry the slurry to obtain the precursor powder of the product.

[0146] Transfer the above precursor powder into a granulator, spray into the reserved slurry with 0.8 times the amount of dry powder for granulation, and obtain pref...

Embodiment 2

[0151] Example 2 A preparation method of ultra-low density and high strength vitrified ceramic ball proppant

[0152] Accurately take by weighing 4.8Kg of superfine quartz sand micropowder, 5.8Kg of kaolin, 5.7Kg of borax, 2Kg of aluminum nitrate, 2.6Kg of magnesium nitrate, 0.5Kg of sodium hydroxide, 10g of polyethylene oxide with the scale of electronic platform.

[0153] Dissolve borax, aluminum nitrate, magnesium nitrate, and sodium hydroxide in 60Kg of water with stirring, then add kaolin and ultrafine quartz sand micropowder into the above solution and stir evenly, and finally add 10g of polyethylene oxide.

[0154] Transfer the above slurry into a homogenization equipment for homogeneous dispersion, and use a laser particle size analyzer to detect the particle size in the slurry to D50=5μm, then spray dry the slurry to obtain the precursor powder of the product.

[0155] Transfer the above precursor powder into a granulator, spray into the reserved slurry with 0.8 times...

Embodiment 3

[0160] Example 3 A preparation method of ultra-low density and high strength vitrified ceramic ball proppant

[0161] Accurately weigh 25Kg of silica sol solution (silica sol content is 15%), 9Kg of aluminum silicate, 5Kg of borax, 1.6Kg of calcium carbonate, 0.4Kg of magnesium carbonate, 1Kg of aluminum nitrate, and 10g of polyethylene oxide with an electronic scale.

[0162] Dissolve borax, aluminum nitrate, and silica sol solution in 55Kg of water with stirring, then add aluminum silicate, calcium carbonate, and magnesium carbonate to the above solution and stir evenly, and finally add 10g of polyethylene oxide.

[0163] Transfer the above slurry into a homogenization equipment for homogeneous dispersion, and use a laser particle size analyzer to detect the particle size in the slurry to D50=5μm, then spray dry the slurry to obtain the precursor powder of the product.

[0164] Transfer the above precursor powder into a granulator, spray into the reserved slurry with 0.8 tim...

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Abstract

The invention provides an ultralow-density high-strength vitrified china ball proppant. The ultralow-density high-strength vitrified china ball proppant comprises the following ingredients in percentage by mass: 20-70% of SiO2, 1-50% of Al2O3, 10-30% of B2O3, 0-15% of CaO, 0-15% of MgO, 0-5% of Na2O, 0-5% of Fe2O3, 0-5% of BaO, 0-5% of BeO, 0-5% of Bi2O3, 0-5% of La2O3, 0-5% of PbO, 0-5% of TiO2, 0-5% of ZnO and 0-5% of ZrO2. The invention also provides a preparation method of the ultralow-density high-strength vitrified china ball proppant, the preparation method comprises the step of preparation of a precursor, and the preparation of the precursor comprises the sub-steps of adding raw materials into a solvent to obtain a mixed slurry, and then performing grinding and drying to obtain a precursor powder. The prepared proppant is ultralow in density and high in strength.

Description

technical field [0001] The invention relates to an ultra-low-density and high-strength vitrified ceramic ball proppant and a preparation method thereof, belonging to the technical field of petroleum fracturing proppant. Background technique [0002] my country is rich in shale gas reserves, ranking first in the world. Low-permeability geological reserves account for more than 1 / 3 of my country's proven oil and gas geological reserves. There are 285 proven low-permeability oil and gas fields, which are widely distributed in 21 of the oil and gas-bearing basins. an oil area. Recently, after years of hard work, my country's oil companies have achieved a breakthrough in shale gas exploration in the Sichuan Basin, and discovered the first 100 billion cubic shale gas field. The exploration and development technology has made great progress, and it has entered the initial stage of large-scale development. [0003] The technologies used in shale gas exploitation mainly consist of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/80
CPCC09K8/805
Inventor 张敬杰宋广智李昌村严开祺杜竹之吴继军付永强
Owner 山东雅丽支撑新材料科技有限公司
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