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Low-density and high-strength ceramic proppant and production method thereof

A production method and proppant technology, which can be used in earth drilling, other household appliances, mining fluids, etc., can solve problems such as failure to meet performance requirements, low strength of ceramsite proppant, unstable product quality, etc., and increase surface finish , high strength, granulation and compact effect

Inactive Publication Date: 2010-09-15
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

The ceramsite proppant produced by this method has low strength 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 and high-strength ceramic proppant and production method thereof
  • Low-density and high-strength ceramic proppant and production method thereof
  • Low-density and high-strength ceramic proppant and production method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0017] Embodiment 1: low-density high-strength ceramsite proppant and production method thereof

[0018] The composition of raw materials is shown in Table 1. In terms of weight percentage, bauxite raw material is 89%, basalt is 4%, clay powder is 5%, and manganese ore powder is 2%. For raw material performance requirements, see the technical plan section.

[0019] Weigh each raw material, grind it into fine powder respectively, pass through a 320-mesh sieve, and the sieving rate is greater than 98.5%, mix and stir the raw materials evenly, under the unidirectional uniform rotation of the granulator, the mixture is continuously and evenly added to the granulator, and at the same time Atomize 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: Lift the semi-finished produ...

Embodiment 2～15

[0020] Embodiments 2-15: See Table 1 for the raw material formula, and the raw material requirements and production methods are the same as those in Example 1, and will not be repeated.

[0021] Table 1 The composition of the ceramsite proppant in each embodiment (by weight percentage, %).

[0022]

[0023] The performance index of product in the embodiment of the present invention in table 2

[0024]

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Abstract

The invention relates to a low-density and high-strength ceramic proppant and a production method thereof. The raw material comprises 80 to 90% of raw bauxite, 3 to 10% of basalt, 4 to 10% of clay silt, 4 to 10% of clay powder and 2 to 8% of manganese ore powder. The production method comprises the following steps of: firstly, weighing the raw materials in production, grinding the raw materials into fine powder, filtering the fine powder by a sieve of 320 meshes, uniformly mixing and stirring the powder and pelletizing the mixed material, and adding the atomizing steam till the mixed materialform semi-finished pellets; secondly, baking the semi-finished pellets in a rotary kiln for 6-8h, to obtain the finished product, wherein the temperature of the kiln head is 1280 to 1310 DEG C and the temperature of the kiln tail is 290 to 320 DEG C. The damage rate of the product of the invention at the pressure of 69 MPa and 86 MPa are respectively lower than 6.8% and 9.8%; the volume densityis only 1.45 to 1.55 g / sq.cm and obviously lower than the like products; and the product has higher strength. The invention has the advantages of less and easily obtained needed raw materials in the formulation, simplification of the production process, little investment, low cost and easy popularization and application.

Description

1. Technical field: [0001] The invention relates to a solid proppant used in oil and gas well fracturing techniques, in particular to a low-density, high-strength ceramsite proppant and a production method thereof. 2. Background technology: [0002] In order to develop deep oil and gas wells and increase their production, fracturing technology is widely used. In order to ensure the effective propping of fractures in deep underground formations, suitable proppant is necessary. 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. Due to its high strength and good sphericity, sintered ceramsite is the preferred fracturing proppant and has been highly valued. my country's petroleum industry generally refers to proppants with a pressure bearing capacity of 69MPa and 86MPa as high-strength ceramsite proppants. Among them, ceramsite proppants made of bauxite as...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/80C04B33/32
Inventor 张玉明张建军
Owner 郑州德赛尔陶粒有限公司
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