Ultra-low density ceramsite proppant and preparation method thereof

A technology of ultra-low density and proppant, which is applied in the direction of earthwork drilling, production fluid, wellbore/well components, etc., which can solve the problem of high operating cost of deep well fracturing proppant, high and deep well fracturing proppant, and failure to achieve expected results and other issues to achieve the effect of improving utilization value, reducing cost and reducing waste

Active Publication Date: 2013-02-27
YUANQU CORUNDUM PROPPANTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the petroleum fracturing proppants used in oilfields at home and abroad are mostly high-, medium-, and low-density products, and the use standards for this product cannot be found in the industry standards. The oil fracturing proppant has to use relatively high-priced deep

Method used

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  • Ultra-low density ceramsite proppant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Grind each raw material into a fine powder larger than 325 meshes, and the ratio by weight is 90 parts of bauxite, 5 parts of quartz stone, 4 parts of dolomite, and 1 part of clay. The time is 60-90min, and then the produced particles are screened, dried until the moisture content is not more than 5wt%, and then enter the rotary kiln for firing. The firing goes through the preheating stage, firing stage and cooling stage respectively. The stage temperature is 600°C for 1 hour; the firing stage temperature is 1350°C for 1 hour; the cooling stage temperature is 400°C for 1 hour, and finally the finished proppant is obtained by cooling at 100°C for 50 minutes.

Embodiment 2

[0022] Grind each raw material into a fine powder larger than 325 meshes. The ratio by weight is 80 parts of bauxite, 8 parts of quartz stone, 9 parts of dolomite, and 3 parts of clay. The time is 60-90min, and then the produced particles are screened, dried until the moisture content is not more than 5wt%, and then enter the rotary kiln for firing. The firing goes through the preheating stage, firing stage and cooling stage respectively. The stage temperature is 500°C for 1.5 hours; the firing stage temperature is 1250°C for 1.5 hours; the cooling stage temperature is 200°C for 1.5 hours, and finally cooled at 200°C for 30 minutes to obtain the finished proppant.

Embodiment 3

[0024] Grind each raw material into a fine powder larger than 325 meshes. The ratio by weight is 85 parts of bauxite, 10 parts of quartz stone, 5 parts of dolomite, and 5 parts of clay. The time is 60-90min, and then the produced particles are screened, dried until the moisture content is not more than 5wt%, and then enter the rotary kiln for firing. The firing goes through the preheating stage, firing stage and cooling stage respectively. The stage temperature is 550°C for 1.2 hours; the firing stage temperature is 1300°C for 1.2 hours; the cooling stage temperature is 300°C for 1.2 hours, and finally cooled at 150°C for 40 minutes to obtain the finished proppant.

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Abstract

The invention relates to ultra-low density ceramsite proppant and a preparation method thereof, and the proppant and the preparation method belong to the technical field of ceramsite proppant for fracturing an oilfield; the invention aims to solve the technical problems of providing the ultra-low density ceramsite proppant which can replace deep well fracturing proppant, is low in operation cost and has low volume density, and the preparation method thereof; the adopted technical scheme is as follows: raw materials are mixed in the following parts by weight: 80 to 85 parts of bauxite, 10 to 15 parts of quartz, 1 to 5 parts of dolomite, and 1 to 2 parts of clay; and the prepared ceramsite proppant replaces the deep well fracturing proppant and is applied to shallow-well fracturing, the volume density is less than 1.5g/cm<3>, so that the operation cost of the auxiliary equipment of the oilfield is effectively reduced, the use of fracturing fluid is reduced, the cost of the proppant is reduced, unnecessary waste is reduced, utilization value of the proppant, and huge economic benefits are brought to the oilfield.

Description

technical field [0001] The invention relates to an ultra-low density ceramsite proppant and a preparation method thereof, which belong to the technical field of ceramsite proppant for oil field fracturing. Background technique [0002] At present, the petroleum fracturing proppants used in oilfields at home and abroad are mostly high-, medium-, and low-density products, and the use standards for this product cannot be found in the industry standards. The proppant used for oil fracturing had to use relatively expensive deep well fracturing proppant, which did not achieve the expected effect, but caused great waste. Moreover, due to the high operating cost of the deep well fracturing proppant used, these problems have always been Since then, it has plagued the development of shallow well fracturing in oilfields. Contents of the invention [0003] In order to overcome the deficiencies of the prior art, the present invention provides an ultra-low-density ceramsite proppant th...

Claims

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Application Information

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IPC IPC(8): C09K8/80C04B35/10C04B35/622
Inventor 段虎生董冲命范海龙
Owner YUANQU CORUNDUM PROPPANTS
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