Low-density high-strength andalusite fracturing proppant and production method thereof

A technology for fracturing proppants and production methods, which is applied in earthwork drilling, production fluids, wellbore/well components, etc. It can solve problems such as failure to meet performance requirements, low pressure bearing capacity of proppants, and unstable product quality. Achieve the effects of easy promotion and implementation, low cost and simplified production process

Active Publication Date: 2011-12-07
郑州德赛尔陶粒有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the proppant has low pressure bearing capacity and unstable product quality, which cannot meet the performance requirements of the existing solid proppant for oil and gas well fracturing.

Method used

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  • Low-density high-strength andalusite fracturing proppant and production method thereof
  • Low-density high-strength andalusite fracturing proppant and production method thereof
  • Low-density high-strength andalusite fracturing proppant and production method thereof

Examples

Experimental program
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Effect test

example 1

[0019] Example 1: High-strength andalusite fracturing proppant and its production method

[0020] Raw material requirements and proportions are shown in Table 1 and 2, in terms of weight percentage, that is, bauxite raw meal 70%, andalusite 10%, kaolin 10%, calcium aluminate cement 5%, manganese ore powder 5%.

[0021] Production method: Weigh each raw material, grind them into fine powder respectively, pass through a 320-mesh sieve, and the sieve rate is greater than 98.5%, mix and stir the raw materials evenly, under the one-way uniform rotation of the granulator, the mixture is continuously and evenly added to the granulator At the same time, add atomized water vapor until the mixture forms round particles of different sizes; pass through a 18-30 mesh sieve, and the sieve rate is required to be greater than 80%, then rotate for 10-15 minutes, and pass through a 18-30 mesh sieve to obtain Semi-finished products; the semi-finished products are dried and screened in the dryer,...

example 2

[0022] Example 2: See Tables 1 and 2 for raw material requirements and proportioning, the production method is basically the same as Example 1, the difference is:

[0023] When the semi-finished product is fired in the rotary kiln, the temperature at the kiln head is 1320~1360°C, and the temperature at the end of the kiln is 310~320°C. After firing for 6 hours, the finished product is obtained.

example 3

[0024] Example 3: The raw material composition is shown in Table 2, and the production method is basically the same as Example 1, the difference being:

[0025] When the semi-finished product is fired in the rotary kiln, the temperature at the kiln head is 1380~1400°C, the temperature at the end of the kiln is 300~310°C, and it will leave the kiln after firing for 7 hours.

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Abstract

The invention relates to a low-density high-strength andalusite fracturing propping agent and a production method thereof. The raw materials comprise: 65-75% of bauxite raw meal, 2-20% of andalusite, 5-20% of kaolinite, 1-8% of calcium aluminate cement, 3-10% of manganese ore powder. The production method comprises the following steps: weighing raw materials, grinding into fine powder, sieving, well mixing, adding into a rotating granulator for granulation, adding atomized aqueous vapor till the mixture becomes a spherical semifinished product, drying; sintering the semifinished product in a rotary kiln for 6-10 h with a kiln head temperature of 1300-1400 DEG C and a kiln tail temperature of 280-320 DEG C, taking the product out of the kiln to obtain a finished product. The product of theinvention has broken rates of 4.8% and 6.9% under pressures of 52 MPa and 69 MPa respectively, and has strength higher than that of other products of the same kind; the product has bulk density of 1.40-1.60 g/cm3, and apparent density of 2.60-2.85 g/cm3, and the density is lower than industrial standard; the product has high surface fineness, and can effectively reduce cost of petroleum fracturing.

Description

technical field [0001] The invention relates to a solid proppant for oil and gas well fracturing techniques, in particular to a low-density and high-strength andalusite fracturing proppant and a production method thereof. Background technique [0002] In the development of deep oil and gas wells, in order to increase the production of oil and gas wells, fracturing technology is widely used. In order to ensure the effective propping of fractures in deep underground formations, appropriate proppant must be selected. Proppants can increase the conductivity of the formation and increase the production of oil or gas, which is an important factor in the application of fracturing technology. Sintered ceramsite is the preferred fracturing proppant due to its high strength and good sphericity. The fracturing proppants in my country's petroleum industry generally use bauxite as the main raw material, and are combined with other inorganic materials to make fracturing proppants. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/80C04B35/622C04B35/10
Inventor 张玉明张建军
Owner 郑州德赛尔陶粒有限公司
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