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Medium-density ceramsite proppant and preparation method thereof

A proppant and medium-density technology, which is applied in the direction of earthwork drilling, mining fluid, wellbore/well components, etc. It can solve the problems of equipment affecting product quality, difficult to control the drying process, and affecting product classification, etc., to achieve maximum use value and social value, reduce broken rate, and save resources

Inactive Publication Date: 2015-04-29
YIXING TENGFEI OIL FRACTARING PROPPANT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Disadvantages of this method: 1. A large amount of dust will be generated during drying; 2. The drying process is difficult to control. Too dry will cause powder removal, too wet will affect the classification of products, and even blockage of equipment will affect the quality of products.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The medium-density ceramsite proppant includes the following raw materials: bauxite 91%, ethyl cellulose 2%, manganese powder 7%;

[0035] Described bauxite is raw bauxite, wherein the weight percent of main chemical composition is: Al 2 content of 65% to 78%, Si content of 4% to 12%, Fe content of 1% to 7%, and Ti content of 2% to 4%; the particle size of the bauxite is 320 mesh;

[0036] The weight percentages of the main chemical components in the manganese powder are: 55%-65% manganese content, 25%-35% Si content; the particle size of the manganese powder is 320 mesh.

[0037] The preparation process is:

[0038] (1) Mix bauxite and manganese powder evenly in proportion to obtain a mixed material, adjust the ethyl cellulose with water to make a paste, and then evenly disperse it in the water that needs to be added during granulation to make an ethyl cellulose dispersion. The ethyl cellulose dispersion is added to the storage tank of the high-pressure water pump; ...

Embodiment 2

[0042] The medium-density ceramsite proppant includes the following raw materials: bauxite 90.5%, methyl cellulose 2%, manganese powder 7.5%;

[0043] Described bauxite is raw bauxite, wherein the weight percent of main chemical composition is: Al 2 content of 65% to 78%, Si content of 4% to 12%, Fe content of 1% to 7%, and Ti content of 2% to 4%; the particle size of the bauxite is 320 mesh;

[0044] The weight percentages of the main chemical components in the manganese powder are: 55%-65% manganese content, 25%-35% Si content; the particle size of the manganese powder is 320 mesh.

[0045] The preparation process is:

[0046] (1) Mix bauxite and manganese powder evenly in proportion to obtain a mixed material, adjust the methyl cellulose with water to make a paste, and then evenly disperse it in the water that needs to be added during granulation to make a methyl cellulose dispersion. The methylcellulose dispersion is added into the storage tank of the high-pressure water...

Embodiment 3

[0050] The medium-density ceramsite proppant includes the following raw materials: bauxite 90.5%, lignin 2%, manganese powder 7.5%;

[0051] Described bauxite is raw bauxite, wherein the weight percent of main chemical composition is: Al 2 content of 65% to 78%, Si content of 4% to 12%, Fe content of 1% to 7%, and Ti content of 2% to 4%; the particle size of the bauxite is 320 mesh;

[0052] The weight percentages of the main chemical components in the manganese powder are: 55%-65% manganese content, 25%-35% Si content; the particle size of the manganese powder is 320 mesh.

[0053] The preparation process is:

[0054] (1) Mix bauxite, lignin powder (commercially available, Shandong Tralin Chemical Co., Ltd.) and manganese powder in proportion to obtain a mixture;

[0055] (2) Put the mixed material into the granulator and use the spray method to add water to granulate to obtain the ceramsite green body (particle size is 0.5-1.0mm); the amount of water to be added during gra...

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Abstract

The invention discloses a medium-density ceramsite proppant and a preparation method thereof. The proppant comprises the following raw materials in percentage by weight: 87-95 percent of bauxite, 0.5-3 percent of binding agent and 4-10 percent of manganese powder; the binding agent can be ethyecellulose, methylcellulose or lignin. The ceramsite proppant is pre-blended into the binding agent during production of a semifinished product, so that the water using amount is averagely reduced by 8 percent, and the product qualified ratio is at least improved by 10 percent; and a blank body has certain hardness, so that the blank body is convenient to store and transport during production; and therefore, the damage rate is obviously reduced, the load of a dust removal system is greatly lightened, and the resources are saved; and in addition, the binding agent is added, so that the apparent density of the ceramsite is improved, the sintering temperature is reduced, and the lignin powder shaped binding agent is directly used without a dissolution step; and therefore, the reaction process is simplified; and moreover, the phenomenon that the time and the temperature are difficultly controlled is avoided, and powder is avoided or product classification is not influenced, or even the quality of the product is not influenced even if the equipment is blocked.

Description

technical field [0001] The invention belongs to the field of inorganic non-metallic ceramic materials, and in particular relates to a medium-density ceramsite proppant and a preparation method thereof. Background technique [0002] Petroleum fracturing proppant (ceramsite sand) is a kind of ceramic particle product with high fracturing strength. It is mainly used for downhole support in oil and gas fields to increase oil and gas production. It is an environmentally friendly product. This product is a substitute for medium and low-strength proppants such as natural quartz sand, glass balls, and metal balls, and has a good effect on increasing oil and gas production. [0003] During oil and gas deep well mining, high closure pressure and low permeability deposits are treated by fracturing to crack the oil-gas-bearing rock formations, and oil and gas gather from the channels formed by the fractures. Petroleum fracturing proppant is used along with the high-pressure solution to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/80C04B35/10C04B35/622
Inventor 黄锡明
Owner YIXING TENGFEI OIL FRACTARING PROPPANT
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