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Method for preparing acid-resistant pressing crack supporting agent from red mud

A fracturing proppant and red mud technology, which is used in earth-moving drilling, production of fluids, wellbore/well components, etc. The effect of acid resistance

Inactive Publication Date: 2007-12-12
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The acid resistance of fracturing proppants produced in my country is generally poor. Therefore, the oil and gas industry standard SY / T5108-2006 implemented on January 1, 2007 has reduced the acid resistance of fracturing proppants. The degree is still generally not up to the standard requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The mass percentage of raw materials is 30% of red mud (quarried in Pingguo Aluminum Company), 13% of barium carbonate, refractory waste (Al 2 o 3 Content 78-80%) 48%, vero mud (a kind of kaolin) 9%.

[0017] 1. Put the red mud and refractory waste into the ball mill tank for ball milling for 24 hours.

[0018] 2. Add barium carbonate and vero mud to the material obtained in step (1), and put it into a ball mill jar for ball milling and mixing for 3 hours.

[0019] 3. Prepare the material obtained in step (2) into semi-finished granules.

[0020] 4. Put the semi-finished product obtained in step (3) into a box-type electric furnace, and sinter at 1370° C. for 2 hours to obtain a finished product.

[0021] Sieve a certain amount of finished product with a particle size range of 0.85-1.18mm (16 / 20 mesh), and test it according to the method recommended by SY / T5108-2006. The acid solubility of the finished product is measured to be 3.3%, and the acid solubility resistanc...

Embodiment 2

[0027] The mass percent of raw materials is 40% of red mud (quarried in Pingguo Aluminum Company), 20% of barium carbonate, refractory waste (Al 2 o 3 Content 70%-80%) 32%, vero mud (a kind of kaolin) 8%.

[0028] 1. Put the red mud and refractory waste into the ball mill tank for ball milling for 24 hours.

[0029] 2. Add barium carbonate and vero mud to the material obtained in step (1), and put it into a ball mill jar for ball milling for 3 hours.

[0030] 3. Prepare the material obtained in step (2) into semi-finished granules.

[0031] 4. Put the semi-finished product obtained in step (3) into a box-type electric furnace, and sinter at 1330° C. for 2 hours to obtain a finished product.

[0032] A certain amount of finished product with a particle size range of 0.85-1.18mm (16 / 20 mesh) was screened and tested according to the method recommended by SY / T5108-2006. The acid solubility of the finished product was measured to be 3.5%. Its anti-acid performance reaches the S...

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Abstract

The invention discloses a method for preparing acid- proof fracturing propping agent with red mud. The comprised raw materials and their weight proportion are as follows: red mud 20- 60%, aluminium-containing substance 20- 60%, barium- containing substance 5- 35%, plasticizing agent 5- 15%. The method comprises following steps: (1) putting red mud and aluminium- containing substance into ball grinding tank for grinding respectively; (2) adding barium- containing substance and plasticizing agent into material got in steps (1), feeding it into ball grinding tank for grinding; (3) preparing material got in step (2) into semi- product particle; (4) calcinating material got in step (3) for 1- 3 hours, getting acid- proof crack propping product. The invention develops new way for red mud application, and provides effective method for increasing acid- proof performance for crack propping agent.

Description

technical field [0001] The invention relates to a manufacturing technology of an acid-resistant fracturing proppant, in particular to a method for preparing an acid-resistant fracturing proppant by using red mud. Background technique [0002] Red mud is a waste product from the process of refining alumina from bauxite. With the continuous development of the aluminum industry, the world currently produces about 50 million tons of red mud every year. my country's red mud discharge is more than 4 million tons per year, which brings great harm to the environment and also plagues the development of the aluminum industry. The comprehensive utilization of red mud has always been an urgent issue in the aluminum industry. Using red mud to prepare fracturing proppant can open up a new way for effective utilization of red mud. [0003] Fracturing proppant is an important special material in petroleum and natural gas industry. Acid resistance is a very important indicator of fractur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/80
Inventor 田小让吴伯麟李剑
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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