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Method for preparing sintered brick from shale gas water-based drilling waste

A technology for drilling waste and shale gas, applied in clay products, applications, household appliances, etc., can solve the problems of low compressive strength and high sintering temperature, achieve low water absorption, improve the performance of building materials, and reduce treatment costs.

Inactive Publication Date: 2020-01-14
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention mainly overcomes the disadvantages of low compressive strength, high sintering temperature, frosting and bursting existing in the technology of preparing sintered bricks from water-based drilling cuttings in the prior art, and proposes a shale gas water-based Method for preparing sintered bricks from drilling waste

Method used

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  • Method for preparing sintered brick from shale gas water-based drilling waste
  • Method for preparing sintered brick from shale gas water-based drilling waste

Examples

Experimental program
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Effect test

Embodiment 1

[0026] like figure 1 Shown, a kind of shale gas water-based drilling waste of the present invention prepares the method for sintered brick, comprises the following steps:

[0027] (1) Put the solidified water-based drill cuttings retrieved from the site into a jaw crusher for crushing until the particle size is less than 5mm, and then use a planetary ball mill to grind the crushed water-based drill cuttings. 10-mesh sieve to obtain water-based cuttings powder with a fineness of less than 2mm;

[0028] (2) Mix and stir the water-based cuttings powder with fly ash and waste glass powder evenly, and the mass ratio of each raw material component is water-based cuttings: waste glass: fly ash=2:2:6 to obtain the mixed material ;

[0029] (3) Add water with 10% mass of the mixed material to the evenly stirred mixed material, stir evenly and age for 24 hours, then use a pressure testing machine to carry out compression molding of the aged material with a pressure of 15 MPa and keep ...

Embodiment 2

[0032] like figure 1 Shown, a kind of shale gas water-based drilling waste of the present invention prepares the method for sintered brick, comprises the following steps:

[0033] (1) Put the solidified water-based drill cuttings retrieved from the site into a jaw crusher for crushing until the particle size is less than 5mm, and then use a planetary ball mill to grind the crushed water-based drill cuttings. 10-mesh sieve to obtain powder with a fineness below 2mm;

[0034] (2) Mix and stir powdered water-based cuttings with fly ash and waste glass powder evenly, and the mass ratio of each raw material component is water-based cuttings: waste glass: fly ash=2:2:6 to obtain a mixture material;

[0035] (3) Add water with 15% of the mass of the mixed material to the evenly stirred mixed material, stir evenly and age for 24 hours, then use a pressure testing machine to perform compression molding of the aged material at a pressure of 20 MPa and keep it for 1 minute;

[0036] (...

Embodiment 3

[0038] like figure 1 Shown, a kind of shale gas water-based drilling waste of the present invention prepares the method for sintered brick, comprises the following steps:

[0039] (1) Put the solidified water-based drill cuttings retrieved from the site into a jaw crusher for crushing until the particle size is less than 5mm, and then use a planetary ball mill to grind the crushed water-based drill cuttings. 10-mesh sieve to obtain powder with a fineness below 2mm;

[0040] (2) Mix and stir the powdered water-based cuttings with fly ash and waste glass powder evenly, and the mass ratio of each raw material component is water-based cuttings: waste glass: fly ash=3:2:5, and the mixture is obtained material;

[0041] (3) Add water with a mass of 12% of the mixed material to the evenly stirred mixed material, stir evenly and age for 24 hours, then use a pressure testing machine to perform compression molding of the aged material at a pressure of 17 MPa and keep it for 1 minute; ...

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Abstract

The invention discloses a method for preparing a sintered brick from shale gas water-based drilling waste. The method comprises the following steps: crushing, grinding and sieving water-based drillingcuttings to obtain water-based drilling cutting powder with fineness of lower than 2 mm; uniformly mixing the water-based drilling cutting powder, fly ash and waste glass in proportion under stirringto obtain a mixed material; adding water into the mixed material, uniformly stirring the material, carrying out ageing for 24 h, and pressing the aged material into a green brick; and drying the molded green brick at 105 + / -5 DEG C for 4 h, heating the green brick to 850-900 DEG C at a heating rate of 1-4 DEG C / min, carrying out high-temperature sintering, carrying out heat preservation for 2 h,and then performing cooling and drawing to obtain a finished sintered brick product. According to the invention, the waste glass is used for tempering the water-based drilling cuttings, so the contentof silicon dioxide in the water-based drilling cuttings can be increased, the content of calcium oxide and the content of SO3 are reduced, the raw materials are allowed to meet the component requirements of the sintered brick, and therefore the phenomena of frosting, cracking and the like of a brick body are avoided.

Description

technical field [0001] The invention belongs to the technical field of oil and gas field drilling waste treatment, and in particular relates to a method for preparing sintered bricks from shale gas water-based drilling waste. Background technique [0002] With the continuous exploitation of shale gas, a large amount of drilling waste will be produced. Drilling waste refers to the solid waste generated during oil and gas exploration and drilling operations. According to the different types of drilling fluid, it is mainly divided into water-based cuttings and oil-based cuttings. At present, there are many kinds of technological methods for the treatment of oil-based drilling waste, and less attention has been paid to water-based drilling waste as a general waste. However, the composition of water-based drilling cuttings is relatively complex, containing bentonite, lubricant, KCL, soda ash and other substances, and has the characteristics of strong adhesion, high chroma, compl...

Claims

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Application Information

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IPC IPC(8): C04B33/135C04B33/132C04B33/13
CPCC04B33/13C04B33/132C04B33/1352C04B2235/6562C04B2235/6567C04B2235/96Y02P40/60
Inventor 刘文士袁辉陶莎孙灵如肖凯李茂川何冬雪熊兴洋
Owner SOUTHWEST PETROLEUM UNIV
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