Fracturing propping agent composition, fracturing propping agent, and preparation method thereof

A fracturing proppant and composition technology, applied in the field of fracturing proppant and fracturing proppant composition, can solve the problems of complex fly ash treatment, high cost of raw material formula, complicated preparation process, etc., and achieve convenient large-scale The effect of industrial production, low cost and simple process

Inactive Publication Date: 2018-02-23
CHNA ENERGY INVESTMENT CORP LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although this method uses high-alumina fly ash as the raw material to lower the raw material cost, the subsequent fly ash treatment is relatively complicated, and the pretreatment includes: adding alkali for pre-desilication reaction, adding acid for activation reaction, and finally Washing, filtering, wh

Method used

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  • Fracturing propping agent composition, fracturing propping agent, and preparation method thereof
  • Fracturing propping agent composition, fracturing propping agent, and preparation method thereof
  • Fracturing propping agent composition, fracturing propping agent, and preparation method thereof

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preparation example Construction

[0029] Therefore, according to the second aspect of the present invention, the present invention provides a method for preparing a fracturing proppant, the preparation method comprising: grinding the composition, then mixing with water and granulating into balls, wherein the combination The product is the fracturing proppant composition described in the first aspect of the present invention.

[0030] According to the preparation method of the present invention, relative to 100 parts by weight of the composition, the amount of water used is preferably 10-30 parts by weight.

Embodiment approach

[0031] According to a specific embodiment, such as figure 1 Shown, this preparation method comprises the following steps:

[0032] (1) adding the fly ash and the bentonite to a grinder for grinding to obtain raw material powder;

[0033] (2) adding the raw material powder and water into a ball forming machine to granulate into balls to obtain a proppant semi-finished product;

[0034] (3) Drying, screening, sintering and re-screening the semi-finished proppant in sequence to obtain the fracturing proppant.

[0035] In step (1), preferably, the grinding makes the median particle size of the raw material powder less than 325 mesh. The present invention has no particular limitation on the grinding machine, which may be a conventional choice for grinding fracturing proppant raw materials, such as one or more selected from Raymond mill, ball mill, jet mill, stirring mill and sand mill. The grinding time is usually 1-5 hours.

[0036]In step (2), preferably the granulation into ...

Embodiment 1-13

[0052] 1) Add fly ash and bentonite (total consumption is 10kg) into a planetary ball mill and grind to obtain raw material powder;

[0053] 2) First add part of the raw material powder and water to the ball forming machine to granulate until the cue ball is formed, then repeat the steps of adding raw material powder and water to make the cue ball grow continuously until the spherical particles grow to an average particle size of 18 Order-30 order, obtain semi-finished proppant (the total consumption of water is 2kg);

[0054] 3) Dry the semi-finished proppant in an oven at 100°C for 4 hours, and then sieve through 18-mesh and 30-mesh sieves to obtain semi-finished particles with particle sizes below 18 mesh and above 30 mesh, and then put the semi-finished particles into Sintered in a muffle furnace, then cooled naturally, and screened through 20-mesh and 40-mesh sieves to obtain 20 / 40-mesh fracturing proppant. The compositions and proportions of the components provided in E...

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Abstract

The invention belongs to the field of petroleum fracturing propping agent, and discloses a fracturing propping agent composition, a fracturing propping agent, and a preparation method thereof. The fracturing propping agent composition comprises, by weight, 60 to 99.5% of fly ash, and 0.5 to 40% of bentonite; the fly ash contains, by weight, more than 35% of Al2O3, and more than 30% of SiO2, and the loss on ignition is smaller than 5wt%; the bentonite contains, by weight, more than 70% of Al2O3 and SiO2, and the loss on ignition is 10 to 20wt%. The formula of the fracturing propping agent composition is simple, cost is low, and low density fracturing propping agents can be prepared taking the fracturing propping agent composition as a raw material; in the fracturing propping agent composition, industrial solid waste fly ash is taken as a raw material, so that environmental pollution caused by direct discharge of fly ash is avoided; the preparation method is simple; and the preparation method is convenient for large scale industrialized production.

Description

technical field [0001] The invention relates to the field of petroleum fracturing fluid proppants, in particular to a fracturing proppant composition, a method for preparing a fracturing proppant by using the composition, and a fracturing proppant prepared by the method. Background technique [0002] Most of the early fracturing proppants used natural solid granular materials, such as quartz sand and walnut shells. However, as the depth of oil and gas wells increases, the strength, sphericity and other properties of these proppants are becoming more and more difficult to meet the stringent requirements of the hydraulic fracturing environment. Artificial fracturing proppant has high strength and sphericity, which makes artificial fracturing proppant have high flow conductivity during hydraulic fracturing, thus greatly improving oil and gas production rate and production efficiency. [0003] Artificial fracturing proppants are divided into sintered ceramsite proppants and res...

Claims

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Application Information

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IPC IPC(8): C04B33/135C09K8/80
CPCC04B33/1352C04B2235/77C04B2235/96C04B2235/9692C09K8/80Y02P40/60
Inventor 丁书强高光辉卓锦德赖世燿徐文强
Owner CHNA ENERGY INVESTMENT CORP LTD
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