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High-strength ceramsite propping agent and production method thereof

A production method and proppant technology, which are used in earth-moving drilling, production of fluids, wellbore/well components, etc., can solve the problems of inability to meet performance requirements, unstable product quality, low pressure bearing capacity, etc., and achieve high pressure resistance. Strength, improving compressive strength, and improving product quality

Active Publication Date: 2013-07-10
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 pressure bearing capacity of the proppant can only reach 69 MPa, the pressure bearing capacity is low, and the product quality is not stable, which cannot meet the performance requirements of the existing solid proppant for oil and gas well fracturing

Method used

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  • High-strength ceramsite propping agent and production method thereof
  • High-strength ceramsite propping agent and production method thereof
  • High-strength ceramsite propping agent and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1: High-strength ceramsite proppant and production method thereof

[0021] The composition of raw materials is shown in Table 1, in terms of weight percentage, that is, 80% of bauxite raw meal, 6% of barite, 0.1% of alum, 9.9% of iron oxide, and 4% of manganese ore powder. For raw material performance requirements, see the technical plan section.

[0022] Weigh each raw material, grind it 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 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, requiring a sieving rate of more than 80%, then rotate for 10-15 minutes, and pass through a 18-30 mesh sieve to obtain a semi-finished product; Lift the semi-finished product in...

Embodiment 2

[0023] Embodiment 2: The composition of raw materials is shown in Table 1, and the production method is basically the same as in Example 1, except that:

[0024] When the semi-finished product is fired in a rotary kiln, the temperature at the kiln head is 1350-1360°C, the temperature at the kiln tail is 310-320°C, and the finished product is obtained after firing for 6 hours.

Embodiment 3

[0025] Embodiment 3: The raw material composition is shown in Table 1, and the production method is basically the same as in Example 1, the difference being:

[0026] When the semi-finished product is fired in a rotary kiln, the temperature at the kiln head is 1380-1400°C, and the temperature at the end of the kiln is 300-310°C. After firing for 7 hours, the finished product is obtained from the kiln.

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Abstract

The invention relates to a high-strength ceramsite propping agent and a production method thereof. The high-strength ceramsite propping agent is prepared from the following components in percentage by weight: 80-90 percent of raw bauxite raw material, 2-10 percent of barite, 0.1-0.6 percent of alum, 4-10 percent of iron oxide and 3-8 percent of manganese powder. The invention adopts carefully chosen raw materials and reasonable component matching, the ceramsite propping agent forms more porzite phases and partial jade phases at a high temperature by adding the barite, the alum and the iron oxide under the catalysis of the manganese powder so as to greatly improve the compressive strength. The crushing rates of the product under the pressure of 69 MPa, 86 MPa and 100 MPa are respectively lower than 3.5 percent, 6.5 percent and 9.5 percent, and the product has higher surface smoothness, effectively improved product quality, decreased oil cracking cost, less raw materials, easily obtained raw materials, simplified production process, small investment, low cost and easy popularization and implementation.

Description

1. Technical field: [0001] The invention relates to a solid proppant used in oil and gas well fracturing techniques, in particular to a high-strength ceramsite proppant and a production method thereof. 2. Background technology: [0002] 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, 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. my country's petroleum industry generally refers to proppants with a pressure bearing capacity of 69MPa and 86MPa as high-strength ceramsite proppants, among which ceramsite proppants made with bauxite as the main raw material and other inorgani...

Claims

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Application Information

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