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Ceramic proppant and preparation method thereof

A technology of proppant and ceramsite, which is used in earth-moving drilling, production of fluids, wellbore/well components, etc., can solve the problems of difficult process control, many raw material components, and increased product density, and achieves high strength and simple formula. , the effect of reducing the sintering temperature

Active Publication Date: 2009-10-21
阳泉市长青石油压裂支撑剂有限公司
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Problems solved by technology

However, this proppant not only needs boiled bauxite as raw material, which increases the manufacturing cost, but also increases the product density, increases the use cost, and increases the difficulty of fracturing
[0008] The production of ceramsite in the above technology has many components of raw materials and the process is not easy to control, resulting in unstable quality, high breakage rate (about 7-10%), and high energy consumption

Method used

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  • Ceramic proppant and preparation method thereof

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Effect test

Embodiment

[0021] With a concentration of 0.5% polyvinyl alcohol aqueous solution as a binder, Yangquan bauxite (Al 2 o 3 content 75%), manganese ore powder (MnO 2 Purity 60%) and Norwegian Elkemn manganese tetroxide (purity 95%) made into raw pellets with a particle size of 0.425-0.85 cm for sintering experiments (see Table 1).

[0022] Table 1

[0023]

[0024] It can be seen from Table 1 that after adding Mn element, the sintering temperature decreases by 60°C (from 1440°C to 1380°C); adding 1.5% Mn 3 o 4 Reduced temperature with addition of 7.5% MnO 2 (60% purity) has the same effect; adding 1.5% Mn 3 o 4 with 7.5% MnO 2 In comparison, the breakage rate will be greatly reduced. Due to Mn 3 o 4 There are very few impurities, and there is more space to increase the content of bauxite, so that the strength of ceramsite sand has a wider space to improve.

[0025]After mixing 98.4 parts of bauxite and 1.6 parts of trimanganese tetraoxide, granulate with water and binder in a...

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Abstract

The invention relates to a ceramic proppant and a preparation method thereof. The ceramic proppant comprises bauxite and trimanganese tetroxide and is characterized by comprising a water-based organic binder; and the mass ratio of the bauxite, the trimanganese tetroxide and the water-based organic binder is as follows: 93-99 mass proportion of bauxite; 1-7 mass proportion of trimanganese tetroxide, 8-15 mass proportion of water-based organic binder and total mass of bauxite and trimanganese tetroxide based on 100 mass proportion. The ceramic proppant has the advantages of lower rate of sintering temperature and low broken rate.

Description

technical field [0001] The invention relates to a solid proppant for oil and gas well fracturing technology, in particular to a ceramsite proppant for relatively deep oil and gas wells and a preparation method thereof. Background technique [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. It can increase the conductivity of the formation and increase the production of oil or gas, and 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. Among them, bauxite is used as the main raw material, combined with other inorganic materials to manufacture ceramsite proppant, which is used by many manufacturers. [0003] Chinese patent 200610017614.6 disclos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/80C04B35/10C04B35/634C04B35/636C04B35/622
Inventor 马晓娟郝景华王培平
Owner 阳泉市长青石油压裂支撑剂有限公司
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