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Low-density ceramic proppant and preparation method thereof

A proppant and low-density technology, which is applied in earthwork drilling, mining fluid, wellbore/well parts, etc., can solve problems such as high production cost and shortage of raw materials, and achieve low price, easy procurement, and simple and convenient production process Effect

Inactive Publication Date: 2012-06-27
SANMENXIA FANGYUAN IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a low-density ceramsite proppant and its preparation method, which can overcome the current shortage of raw materials and high production costs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The low-density ceramsite proppant of the present invention is made of raw materials with the following mass percentage content:

[0026] 85% bauxite, 3% clay, 3% potash feldspar, 3% quartz, 4% limestone, and 2% dolomite.

[0027] Grind bauxite, clay, potash feldspar, quartz, limestone, and dolomite into 325 mesh fine powders with a pass rate of greater than 95%, weigh them in proportion, mix them with a ball mill, and put them into an oval granulating pot. The granulating pot is rotated at a constant speed and granulated under the action of spraying. After the granules are screened, they are dried until the moisture content is not higher than 5%, and then enter the rotary kiln. The finished product is fired at 1320°C for 1 hour. The bulk density of the finished product is 1.56g / cm 3 , The apparent density is 2.80g / cm 3 , The crushing rate is 5.50% when the closing pressure is 52MPa. Other indicators are also in line with the national oil and gas SY / T 5108-2006 industry sta...

Embodiment 2

[0029] The low-density ceramsite proppant of the present invention is made of the following components with mass percentage content:

[0030] Bauxite 90%, clay 4%, potash feldspar 3%, quartz 1%, limestone 1%, dolomite 1%.

[0031] Grind bauxite, clay, potash feldspar, quartz, limestone, and dolomite into 325 mesh fine powders with a pass rate of greater than 95%, weigh them in proportion, mix them with a ball mill, and put them into an oval granulating pot. The granulating pot is rotated at a constant speed and granulated under the action of spraying. After the granules are screened, they are dried until the moisture content is not higher than 5%, and then enter the rotary kiln. The finished product is fired at 1380°C for 0.5 hours. The bulk density of the finished product is 1.58g / cm 3 , The apparent density is 2.83g / cm 3 , The crushing rate is 5.15% when the closing pressure is 52MPa. Other indicators are also in line with the national oil and gas SY / T 5108-2006 industry standar...

Embodiment 3

[0033] The low-density ceramsite proppant of the present invention is made of the following components with mass percentage content:

[0034] Bauxite 95%, clay 2%, potash feldspar 1%, quartz 0, limestone 1.5%, dolomite 0.5%.

[0035] Grind bauxite, clay, potash feldspar, limestone, and dolomite into 325 mesh fine powders with a pass rate of more than 95%, weigh them in proportion, mix them evenly with a ball mill, and put them into an oval granulating pot. The pan is rotated at a constant speed and granulated under the action of spraying. After the granules are screened, they are dried until the moisture content is not higher than 5%, and then enter the rotary kiln. The finished product is fired at 1360°C for 1.5 hours. The bulk density of the finished product is 1.57g / cm 3 , The apparent density is 2.81g / cm 3 , The crushing rate is 5.31% when the closing pressure is 52MPa. Other indicators are also in line with the national oil and gas SY / T 5108-2006 industry standards.

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Abstract

The invention belongs to the technical field of solid proppants for oil and gas well fracturing technologies, and in particular, relates to a low-density ceramic proppant and a preparation method thereof. The proppant is prepared from the following raw materials: bauxite, clay, potassium feldspar, quartz, limestone and dolomite. The raw materials are wide in source, convenient to purchase and low in price; the production technology is simple, convenient and fast; and the cost of the ceramic proppant is generally reduced.

Description

Technical field [0001] The invention belongs to the technical field of solid proppants for oil and gas well fracturing processes, and particularly relates to a low-density ceramsite proppant and a preparation method thereof. Background technique [0002] In the fracturing process of deep well exploitation of oil and natural gas, proppants are used to provide high permeability channels for the circulation of oil and gas flow, maintain high conductivity, and increase oil and gas production. my country’s petroleum industry generally keeps the bulk density no greater than 1.65g / cm 3 , Apparent density is not more than 3.00g / cm 3 The ceramsite proppant with a closing pressure of 52MPa and a crushing rate of not more than 9.0% is called a low-density ceramsite proppant. When using low-density ceramsite proppant as oil well fracturing proppant to extract crude oil, it has the characteristics of low dosage, convenient construction and low cost. At present, most low-density ceramsite pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/80C04B35/10C04B35/622
Inventor 程传文张希君高明刘腾孟小刚赵东霞
Owner SANMENXIA FANGYUAN IND
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