A method for preparing sintered bricks by modification of water-based drilling solidified material

Abstract

The invention discloses a method for preparing a sintered brick by water-based well drilling condensate modification. The method comprises a step (1) of causing water-based well drilling condensate to undergo preliminary crushing, adopting a stone removal device to remove most of limestone therein, performing deep crushing on the water-based well drilling condensate from which the limestone has been removed, performing sieving, and obtaining powder with the fineness lower than 1 mm; a step (2) of causing the water-based well drilling condensate powder obtained through the step (1) to be evenly mixed with modifier barium salt, shale soil and internal combustion coal, and obtaining a mixed material; a step (3) of adding water into the mixed material obtained through the step (2), performing stirring, and performing ageing for 2-3 days; a step (4) of making the aged mixed material into a green brick, performing drying and high-temperature sintering, and obtaining the finished sintered brick. According to the method for preparing the sintered brick by water-based well drilling condensate modification, the problems that in the prior art, a brick body of a sintered brick prepared from the water-based well drilling condensate becomes white, bursts and powders are effectively solved.

Description

technical field

[0001] The invention relates to the technical field of waste treatment of drilling cuttings in oil and gas fields, in particular to a method for preparing sintered bricks by modifying a water-based drilling solidified product. Background technique

[0002] In the process of oil and gas drilling using water-based drilling fluid, the debris generated by the drill bit cutting the formation rock is carried out through the water-based drilling fluid to generate water-based drilling cuttings. Water-based drilling cuttings are derived from the use of water-based drilling fluids, and their components are complex, including bentonite, lubricant, KCl, soda ash and other substances. At present, the water-based drilling cuttings are treated by curing, and the water-based drilling cuttings after curing are called water-based drilling cured products. At present, the final disposal method of water-based drilling solidified material is mainly in-situ landfill. According to...

Examples

Embodiment 1

[0029] A method for preparing sintered bricks by modification of water-based drilling solidified material, comprising the following steps:

[0030] (1) After the water-based drilling solidified material is preliminarily crushed, it is transported to the rotary circular screen to remove most of the limestone until its content is less than 10%, and then the water-based drilling solidified material with the limestone removed is sent to the impact hammer crusher Deep crushing treatment is carried out in the middle, and then sieved by a vibrating screen with a screen aperture of 10-20 meshes to obtain powder with a fineness of less than 1mm;

[0031] (2) the water-based drilling solidified powder obtained in step (1) and the modifier barium salt, shale soil, and internal combustion coal by weight percentage: water-based drilling solidified powder 15%, modifier barium salt 2% , 70% of shale soil, 13% of internal combustion coal, mixed and stirred evenly to obtain a mixed material; ...

Embodiment 2

[0036] A method for preparing sintered bricks by modification of water-based drilling solidified material, comprising the following steps:

[0037] (1) After the water-based drilling solidified material is initially crushed, it is transported to a stone remover to remove most of the limestone until its content is less than 10%, and then the water-based drilling solidified material from which the limestone has been removed is transported to the impact hammer crusher. Carry out deep crushing treatment, and then sieve with a vibrating screen with a mesh aperture of 10-20 meshes to obtain powder with a fineness of less than 1mm;

[0038] (2) the water-based drilling solidified powder obtained in step (1) and the modifier barium salt, shale soil, and internal combustion coal by weight percentage: water-based drilling solidified powder 30%, barium nitrate 7.5%, shale 50% soil and 12.5% ​​internal combustion coal, mix and stir evenly to obtain a mixed material;

[0039] (3) add wate...

Embodiment 3

[0042] A method for preparing sintered bricks by modification of water-based drilling solidified material, comprising the following steps:

[0043] (1) Pretreatment of water-based drilling solidified material: firstly crush the water-based drilling solidified material, transport it to the stone remover with a belt conveyor, remove most of the limestone, and then continue to use the belt conveyor to remove the limestone water. The solidified material of the base drilling is transported to the impact hammer crusher for deep crushing treatment. After the crushing treatment, it is screened with a vibrating screen. The screen aperture of the vibrating screen is 10-20 mesh, and the powder with a fineness of less than 1 mm is obtained;

[0044] (2) Ingredients: add the following raw material components and modifiers by weight: 25% of water-based drilling solidified powder, 5% of barium chloride, 55% of shale soil, 15% of internal combustion coal, fully stirred and mixed evenly , to o...

technical field

[0001] The invention relates to the technical field of waste treatment of drilling cuttings in oil and gas fields, in particular to a method for preparing sintered bricks by modifying a water-based drilling solidified product. Background technique

[0002] In the process of oil and gas drilling using water-based drilling fluid, the debris generated by the drill bit cutting the formation rock is carried out through the water-based drilling fluid to generate water-based drilling cuttings. Water-based drilling cuttings are derived from the use of water-based drilling fluids, and their components are complex, including bentonite, lubricant, KCl, soda ash and other substances. At present, the water-based drilling cuttings are treated by curing, and the water-based drilling cuttings after curing are called water-based drilling cured products. At present, the final disposal method of water-based drilling solidified material is mainly in-situ landfill. According to...

Examples

Embodiment 1

[0029] A method for preparing sintered bricks by modification of water-based drilling solidified material, comprising the following steps:

[0030] (1) After the water-based drilling solidified material is preliminarily crushed, it is transported to the rotary circular screen to remove most of the limestone until its content is less than 10%, and then the water-based drilling solidified material with the limestone removed is sent to the impact hammer crusher Deep crushing treatment is carried out in the middle, and then sieved by a vibrating screen with a screen aperture of 10-20 meshes to obtain powder with a fineness of less than 1mm;

[0031] (2) the water-based drilling solidified powder obtained in step (1) and the modifier barium salt, shale soil, and internal combustion coal by weight percentage: water-based drilling solidified powder 15%, modifier barium salt 2% , 70% of shale soil, 13% of internal combustion coal, mixed and stirred evenly to obtain a mixed material; ...

Embodiment 2

[0036] A method for preparing sintered bricks by modification of water-based drilling solidified material, comprising the following steps:

[0037] (1) After the water-based drilling solidified material is initially crushed, it is transported to a stone remover to remove most of the limestone until its content is less than 10%, and then the water-based drilling solidified material from which the limestone has been removed is transported to the impact hammer crusher. Carry out deep crushing treatment, and then sieve with a vibrating screen with a mesh aperture of 10-20 meshes to obtain powder with a fineness of less than 1mm;

[0038] (2) the water-based drilling solidified powder obtained in step (1) and the modifier barium salt, shale soil, and internal combustion coal by weight percentage: water-based drilling solidified powder 30%, barium nitrate 7.5%, shale 50% soil and 12.5% ​​internal combustion coal, mix and stir evenly to obtain a mixed material;

[0039] (3) add wate...

Embodiment 3

[0042] A method for preparing sintered bricks by modification of water-based drilling solidified material, comprising the following steps:

[0043] (1) Pretreatment of water-based drilling solidified material: firstly crush the water-based drilling solidified material, transport it to the stone remover with a belt conveyor, remove most of the limestone, and then continue to use the belt conveyor to remove the limestone water. The solidified material of the base drilling is transported to the impact hammer crusher for deep crushing treatment. After the crushing treatment, it is screened with a vibrating screen. The screen aperture of the vibrating screen is 10-20 mesh, and the powder with a fineness of less than 1 mm is obtained;

[0044] (2) Ingredients: add the following raw material components and modifiers by weight: 25% of water-based drilling solidified powder, 5% of barium chloride, 55% of shale soil, 15% of internal combustion coal, fully stirred and mixed evenly , to o...

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