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Low-density coated ceramsite proppant and preparation method thereof

A low-density, proppant technology, applied in the field of petroleum proppant, can solve the problems of high oil fracturing support cost and ecological environment damage, and achieve the effects of improved crush resistance, low crush rate and low production cost

Active Publication Date: 2017-01-04
CHONGQING CHANGJIANG RIVER MOLDING MATERIAL GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The raw material formulations of existing products on the market mostly use mineral resources such as high-quality bauxite, manganese powder, dolomite, and high-quality coke gemstones. The large-scale mining of ores not only damages the ecological environment, but also leads to high costs for oil fracturing support

Method used

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  • Low-density coated ceramsite proppant and preparation method thereof
  • Low-density coated ceramsite proppant and preparation method thereof
  • Low-density coated ceramsite proppant and preparation method thereof

Examples

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Effect test

preparation example Construction

[0029] The preparation method of low-density coated ceramsite proppant comprises the following steps:

[0030] The first step is to prepare the green body of ceramsite base material, grind the raw materials kaolin, ceramic soil, and coal ash, mix them evenly, put them into the granulator, atomize granulation in the granulator, and sieve to obtain the ceramsite base material green body;

[0031]The second step is to prepare the ceramsite base material, after drying the ceramsite base material green body obtained in the first step, calcining at 1000-1150°C for 8-9 hours, and passing through a 40 / 70 mesh sieve to obtain the ceramsite base material;

[0032] The third step is surface treatment, adding the ceramsite substrate obtained in the second step to the horizontal drum, the rotation speed of the horizontal drum is 60-120r / min, and the polishing time is 0.5-1.5 hours;

[0033] The fourth step is to heat the ceramsite substrate polished in the third step to 60-350°C, add mixe...

experiment example 1

[0042] Heat 100kg of ceramsite 40 / 70 mesh to 300°C, put it into the sand mixer, stir and cool down to 250°C, immediately add 1kg of epoxy resin and 1kg of phenolic resin into the sand mixer and stir evenly to form a mixture, then Add 0.2kg of phenalkamine and 0.2kg of hexamethylenetetramine and stir evenly. When the mixture starts to agglomerate, add 0.05kg of calcium stearate, and continue to stir evenly. After cooling, crushing and sieving, the obtained mixture becomes the film-coated proppant, numbered 1M.

experiment example 2

[0044] Heat 100kg of ceramsite 40 / 70 mesh to 80°C, put it into the sand mixer, stir it and cool it down to 60°C, immediately add 1kg of polyurethane resin and 1kg of silicone resin into the sand mixer and stir evenly to form a mixture, then Add 0.2kg of Lewis acid and 0.2kg of acid anhydride and stir well. Add 0.05 kg of zinc stearate when the mixture starts to agglomerate, and continue to stir evenly, and the obtained mixture is numbered 2M after being cooled, crushed and sieved.

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Abstract

The invention relates to a low-density coated ceramsite proppant and a preparation method thereof, and belongs to the field of petroleum proppants. A ceramsite base material and mixed resin coating the surface of the ceramsite base material are adopted, so that compared with the traditional proppant, the breaking-resistant capacity is greatly improved, the breaking rate is much lower under the condition of the same consumption of resin, and the low-density coated ceramsite proppant can be suitable for deeper well fracturing. Compared with the traditional proppant, the production cost is lower, the chemical inertness is better, the fracturing effective period can be prolonged, and the low-density coated ceramsite proppant is suitable for the fracturing construction under various complicated stratum environment conditions and is higher in flow conductivity.

Description

technical field [0001] The invention relates to the field of petroleum proppants, in particular to a low-density film-coated ceramsite proppant and a preparation method thereof. Background technique [0002] Hydraulic fracturing, also known as hydraulic fracturing, is a drilling technique used in the exploitation of unconventional shale oil and gas. The main goal is to increase the production of oil and gas wells. The principle is to use a surface high-pressure pump to mix a large amount of chemical substances into water, sand, etc. to make fracturing fluid, and then inject deep into the rock and fracture the rock, so as to export oil or natural gas from the tight rock formation, so as to store it in the shale. The huge oil and natural gas resources in the gas are released. Currently, this technology is more effective in increasing production of natural gas wells. With the increasing difficulty of mining and the increasing depth of wells, the technical specifications for f...

Claims

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Application Information

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IPC IPC(8): C09K8/88C09K8/92
CPCC09K8/885C09K8/92
Inventor 熊鹰
Owner CHONGQING CHANGJIANG RIVER MOLDING MATERIAL GRP
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