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Fracturing ceramsite proppant produced by steel slag and preparation method thereof

A technology of proppant and steel slag, which is applied in the direction of chemical instruments and methods, earthwork drilling, drilling compositions, etc., can solve the problems of high product density, high cost, and large energy consumption, achieve high mechanical strength, reduce occupation effects of land and pollution on the environment

Inactive Publication Date: 2016-02-17
武汉钢铁有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to high firing temperature, high product density, high energy consumption and high cost, it cannot meet user requirements

Method used

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  • Fracturing ceramsite proppant produced by steel slag and preparation method thereof
  • Fracturing ceramsite proppant produced by steel slag and preparation method thereof
  • Fracturing ceramsite proppant produced by steel slag and preparation method thereof

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Embodiment Construction

[0032] The present invention is described in detail below:

[0033] Table 1 is a list of raw material values ​​in each embodiment of the present invention;

[0034] Table 2 is the value list of the main process parameters of each embodiment of the present invention;

[0035] Table 3 is a list of performance test results of various embodiments of the present invention.

[0036] Each embodiment of the present invention is produced according to the following steps:

[0037] 1) Fully mix steel slag with a particle size of ≤75 microns, wollastonite with a particle size of ≤75 microns, and clay with a particle size of ≤45 microns except for the amount used as clay slurry and sprayed in the preparation of pellets;

[0038] 2) Input the mixed material into the ball making machine, and control the running speed of the ball making machine at 15-60 rpm; during this period, spray the adjusted clay slurry on the surface of the mixed material, and spray on the surface after the pellet mak...

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Abstract

The invention provides a fracturing ceramsite proppant produced by steel slag. The raw materials by weight percentage of the fracturing ceramsite proppant are as follows: 50-90% of steel slag with the granularity of less than 75 microns, 5-45% of wollastonite with the granularity of less than 75 microns, and 5-20% of clay with the granularity of less than 45 microns, wherein the clay with the total weight percentage of not greater than 5% is taken to mix with water to prepare clay slip, the clay with the total weight percentage of not greater than 25% is taken to spray in a ceramsite preparation process, and the rest of the clay is taken as a mixture; and an acid-resisting polymer is added. The fracturing ceramsite proppant produced by steel slag is prepared by the following steps: mixing the steel slag, the wollastonite and the rest of the clay, except the clay for preparing the clay slip and the clay for spraying to prepare the ceramsite; palletizing, drying, sintering, naturally cooling to room temperature, grinding rotationally heating, and standing for later use. According to the fracturing ceramsite proppant produced by steel slag and the preparation method thereof, the steel slag, the clay and the wollastonite are taken as the main raw materials; the produced fracturing ceramsite proppant has high mechanical strength, is smooth in surface and resists acid corrosion; the roundness of products is larger than 0.85, the acid solubility is smaller than 4%, the compressive strength is not lower than 52 MPa, and the pressing crushing efficiency is smaller than 3%.

Description

technical field [0001] The invention relates to a ceramsite proppant and a preparation method thereof, in particular to a fracturing ceramsite proppant produced with steel slag and a preparation method thereof. Background technique [0002] Fracturing ceramsite proppant is a spherical ceramic particle that is injected into oil-gas-bearing rock formation fractures through high-pressure liquid to keep the fractures formed by fracturing open and provide smooth passage for oil and gas during low-permeability oil and gas exploitation. It is a key consumable material in the exploitation of closed oil and gas, especially shale gas. It has the characteristics of high requirements on product technical indicators and large single well usage. [0003] In recent years, with the increasing difficulty of oil and gas extraction and the rapid development of the shale gas industry, the demand for fracturing proppant products has increased rapidly, and is developing in the direction of high s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/80
CPCC09K8/805
Inventor 李博文何明生黄建阳甘万贵薛改凤刘继雄周旺枝刘孟陈华圣李丽坤
Owner 武汉钢铁有限公司
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