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Low-density fly-ash ceramsite proppant and preparation method thereof

A technology of fly ash ceramsite and proppant, which is applied in chemical instruments and methods, earthwork drilling, mining fluids, etc. It can solve the problems of inability to achieve material composition and sintering temperature, inability to improve process performance, and precise control, etc., to achieve The effect of convenient operation, good performance and simple process

Inactive Publication Date: 2017-08-18
TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art, provide a low-density fly ash ceramsite proppant and its preparation method, and solve the problem that the existing proppant cannot realize precise control of material composition and sintering temperature during the preparation process. Technical problems that cannot effectively improve the process performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A low-density fly ash ceramsite proppant, which: includes an inner core and an outer shell, the inner core includes 50% bauxite, 8% fly ash and 1% manganese ore powder, and the diameter of the inner core is 180 μm; The casing includes 50% bauxite, 8% fly ash, 1% manganese ore powder and 1% dolomite, and the diameter of the casing is 380 μm.

[0022] Further, the main chemical composition (percentage by weight) of the bauxite is: 70% aluminum, 10% silicon, 1% iron, and 2% titanium; the main chemical composition (percentage by weight) of the manganese powder is : Manganese 55%, Silicon 35%.

[0023] Further, the fluxing agent includes one or more of sodium carbonate, sodium bicarbonate and potassium carbonate.

[0024] Further, the bulk density of the low-density fly ash ceramsite proppant is ≤1.39g / cm 3 、Apparent density≤2.66g / cm 3 .

[0025] A preparation method of a low-density fly ash ceramsite proppant, comprising the steps of:

[0026] 1), take 50% of bauxite, ...

Embodiment 2

[0034] A kind of low-density fly ash ceramsite proppant, wherein: comprise core and shell, described core comprises 65% bauxite, 21% fly ash, 2% manganese ore powder and 1% flux, so The inner core has a diameter of 200 μm; the outer shell includes 65% bauxite, 21% fly ash, 2% manganese ore powder and 2% dolomite, and the outer shell has a diameter of 500 μm.

[0035] Further, the main chemical composition (percentage by weight) of the bauxite is: aluminum 75%, 15% silicon, 1.5% iron, 3% titanium; the main chemical composition (percentage by weight) of the manganese powder is : Manganese 58%, Silicon 38%.

[0036] Further, the fluxing agent includes one or more of sodium carbonate, sodium bicarbonate and potassium carbonate.

[0037] Further, the bulk density of the low-density fly ash ceramsite proppant is ≤1.39g / cm 3 、Apparent density≤2.66g / cm 3 .

[0038] A preparation method of a low-density fly ash ceramsite proppant, comprising the steps of:

[0039] 1), take 65% of ...

Embodiment 3

[0047] A kind of low-density fly ash ceramsite proppant, wherein: comprise core and shell, described core comprises 75% bauxite, 32% fly ash, 4% manganese ore powder and 3% flux, so The inner core has a diameter of 230 μm; the outer shell includes 75% bauxite, 32% fly ash, 4% manganese ore powder and 3% dolomite, and the outer shell has a diameter of 700 μm.

[0048] Further, the main chemical composition (percentage by weight) of the bauxite is: 80% aluminum, 20% silicon, 2% iron, and 3.5% titanium; the main chemical composition (percentage by weight) of the manganese powder is : Manganese 63%, Silicon 42%.

[0049] Further, the fluxing agent includes one or more of sodium carbonate, sodium bicarbonate and potassium carbonate.

[0050] Further, the bulk density of the low-density fly ash ceramsite proppant is ≤1.39g / cm 3 、Apparent density≤2.66g / cm 3 .

[0051] A preparation method of a low-density fly ash ceramsite proppant, comprising the steps of:

[0052] 1), take 75%...

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Abstract

The invention provides a low-density fly-ash ceramsite proppant and a preparation method thereof, belongs to the technical field of preparation of inorganic materials, and solves the technical problems that in the preparation process of a conventional proppant, material composition or the sintering temperature cannot be accurately controlled, and the processing property cannot be effectively improved. The low-density fly-ash ceramsite proppant is characterized by comprising an inner core and an outer shell, wherein the inner core comprises 50-89% of bauxite, 8-45% of fly ash, 1-6% of manganese mineral powder and 0-5% of a flux and is 180-250 [mu]m in diameter; the outer shell comprises 50-89% of bauxite, 8-45% of fly ash, 1-6% of manganese mineral powder and 1-5% of dolomite and is 380-830 [mu]m in diameter. The low-density fly-ash ceramsite proppant has the advantages that the performance is excellent, the technological process is simple, and the operation is convenient.

Description

technical field [0001] The invention belongs to the technical field of inorganic material preparation, and in particular relates to a low-density fly ash ceramsite proppant and a preparation method thereof. Background technique [0002] Fracturing proppants are props that keep rocks deep underground in a fractured state during oil and gas extraction. Oil and gas reservoirs have different exploitation depths, different oil and gas properties, and different requirements for proppant properties such as strength, apparent density, and particle size. Generally, the fracturing proppant should have a low apparent density under the premise of high enough anti-fracture ability, so as to reduce the cost of fracturing, ensure the saturation of fracture filling, and increase the production of oil and gas wells. Therefore, it is particularly important to prepare low-cost, low-density and high-strength fracturing proppants. [0003] Gao Ruqin et al. (Research on fly ash-based coal seam ...

Claims

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Application Information

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IPC IPC(8): C09K8/80C04B35/10C04B35/622C04B41/87
CPCC09K8/805C04B35/10C04B35/62204C04B41/009C04B41/4584C04B41/87C04B2235/3262C04B2235/442C04B2235/77C04B41/4545C04B41/5031
Inventor 邹欣伟柴跃生田玉明
Owner TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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