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Ceramsite proppant for well producing coalbed methane from coal gangue and preparation method thereof

A technology for coalbed methane wells and coal gangue, which is applied in the field of ceramsite proppant and its preparation, can solve the problems of high production cost of ceramsite proppant, increase the cost of oil and gas exploitation and fracturing construction, etc., and achieves significant economic and environmental benefits, Achieve the effect of resource utilization, reduction of accumulation and environmental pollution

Inactive Publication Date: 2016-08-24
TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, high-grade bauxite or kaolin is mostly used as raw materials to prepare corundum-based ceramsite proppants at home and abroad. However, with the rapid development and large demand of ceramsite proppants, the raw material prices of high-grade bauxite and kaolin continue to soar. As a result, the production cost of ceramsite proppant is generally high, which indirectly increases the cost of oil and gas exploration and fracturing construction

Method used

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  • Ceramsite proppant for well producing coalbed methane from coal gangue and preparation method thereof
  • Ceramsite proppant for well producing coalbed methane from coal gangue and preparation method thereof
  • Ceramsite proppant for well producing coalbed methane from coal gangue and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] like figure 1 and Figure 4 Shown, a kind of coal gangue prepares ceramsite proppant for coalbed methane well, it comprises coal gangue and bauxite, is characterized in that:

[0030] The composition of the coal gangue raw material and its weight percentage content are: Al 2 o 3 The content is 23.3%, SiO 2 The content is 65%, K 2 O content is 5%, Fe 2 o 3 The content is 5%, and the content of other unavoidable impurities is 1.7%;

[0031] The composition of the bauxite raw material and its weight percent content are: Al 2 o 3 The content is 64.8%, SiO 2 The content is 20%, Fe 2 o 3 The content is 10%, TiO 2 The content is 5%, and the content of other unavoidable impurities is 0.2%;

[0032] The raw material composition and weight percentage content of the ceramsite proppant are: 90% of coal gangue and 10% of bauxite.

[0033] The composition and weight percentage of each phase in the ceramsite proppant are as follows: the content of the quartz phase is 31....

Embodiment 2

[0042] like figure 2Shown, a kind of coal gangue prepares ceramsite proppant for coalbed methane well, it comprises coal gangue and bauxite, is characterized in that:

[0043] The composition of the coal gangue raw material and its weight percentage content are: Al 2 o 3 The content is 25%, SiO 2 The content is 65%, K 2 O content is 5%, Fe 2 o 3 The content is 4.5%, and the content of other unavoidable impurities is 0.5%;

[0044] The composition of the bauxite raw material and its weight percent content are: Al 2 o 3 The content is 58%, SiO 2 The content is 20%, Fe 2 o 3 The content is 10%, TiO 2 The content is 5%, and the content of other unavoidable impurities is 1%;

[0045] The raw material composition and weight percentage content of the ceramsite proppant are: 87% of coal gangue and 13% of bauxite.

[0046] The weight percentage content of the ceramsite proppant is as follows: the content of quartz is 32.7%, the content of mullite is 42.5%, and the content...

Embodiment 3

[0055] like image 3 Shown, a kind of coal gangue prepares ceramsite proppant for coalbed methane well, it comprises coal gangue and bauxite, is characterized in that:

[0056] The composition of the coal gangue raw material and its weight percentage content are: Al 2 o 3 The content is 20%, SiO 2 The content is 70%, K 2 O content is 4%, Fe 2 o 3 The content is 1%, and the content of other unavoidable impurities is 1%;

[0057] The composition of the bauxite raw material and its weight percent content are: Al 2 o 3 The content is 58%, SiO 2 The content is 26%, Fe 2 o 3 The content is 10%, TiO 2 The content is 5%, and the content of other unavoidable impurities is 1%;

[0058] The raw material composition and weight percentage content of the ceramsite proppant are: 80% coal gangue and 20% bauxite.

[0059] The weight percentage content of the ceramsite proppant is as follows: the content of quartz is 29.3%, the content of mullite is 49.1%, and the content of amorph...

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Abstract

A ceramsite proppant for a well producing coalbed methane from coal gangue and a preparation method thereof belong to the technical field of ceramic materials and proppants for coalbed methane fracturing construction propping. The proppant comprises coal gangue and bauxite and is characterized by comprising according to percent by weight: 80-90% of coal gangue and 10-20% of bauxite; and the ceramsite proppant 20-40 mesh in particle size is obtained by: grinding the coal gangue and the bauxite respectively to target mesh size less than 325 mesh in particle size so as to obtain starting powder; mixing well the starting powder to obtain mixed powder; adding a temporary binder to the mixed powder, and granulating in a granulator; drying spherical granule blanks, and screening sequentially with a 18-mesh screen and a 40-mesh screen to obtain spherical granule blanks; sintering the screened blanks, cooling with the furnace to room temperature, and screening the blanks sequentially with a 20-mesh screen and a 40-mesh screen. The ceramsite proppant prepared herein enables reduced exploitation cost of coalbed methane, resourceful utilization of coal gangue waste and reduced solid waste accumulation and environmental pollution.

Description

technical field [0001] The invention relates to a ceramsite proppant for coalbed gas wells prepared by using coal gangue and a preparation method thereof, and belongs to the technical field of ceramic materials and proppant for coalbed gas fracturing construction. Background technique [0002] Coal gangue is a kind of solid waste produced in the process of coal mining and coal washing. It is a hard black mixture rock with low carbon content formed by coal mines, soil and sandstone during the coal formation process. Its main component is is al 2 o 3 with SiO 2 , and Fe 2 o 3 、K 2 O et al. According to statistics, the coal gangue discharge in Shanxi Province is about 1.5 billion tons, ranking first in the country. There are about 1,540 coal gangue hills, covering an area of ​​about 260,000 hectares, with an average annual discharge of about 100 million tons. The accumulation and discharge of solid waste not only occupy a large amount of land, pollute water resources and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/80C09K8/92
CPCC09K8/80C09K8/92
Inventor 王凯悦田玉明郝建英武雅乔力国民李占刚柴跃生赵志刚
Owner TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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