Method for preparing sintered brick by utilizing water base well drilling cuttings

A technology of sintered bricks and well drilling, which is applied in the field of oil and gas field drilling cuttings waste treatment, to achieve the effect of realizing solid waste recycling, simplifying the process, and reducing waste of water resources

Active Publication Date: 2017-12-12
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Another purpose of the present invention is to provide a multi-functional high-efficiency treatment agent for water-based drilling waste fluid in order to solve the problems existing in the treatment of shale gas water-based cuttings in the prior art

Method used

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  • Method for preparing sintered brick by utilizing water base well drilling cuttings
  • Method for preparing sintered brick by utilizing water base well drilling cuttings
  • Method for preparing sintered brick by utilizing water base well drilling cuttings

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Effect test

Embodiment 1

[0037] A method for preparing sintered bricks from water-based drilling cuttings, comprising the steps of:

[0038] (1) Water-based drilling cuttings are automatically added into the sinking continuous reactor, and 0.5% by mass modifier is added to the reactor for full reaction to obtain reformed solid waste; (2) the reformed The solid waste is transported to the brick factory, stacked and dried naturally for 3 days in the raw material area of ​​the brick factory, and then the modified solid waste is mixed with internal combustion materials and shale soil at a weight ratio of 3:1:3, crushed, and sieved. Obtain the mixture; (3) transfer the mixture to the brick mixing mixing system, and then add 10% by mass of tap water, drilling waste water, fracturing flowback water and gas production and oil production waste water, or a mixture of at least two, Stir, shape, and make adobe; (4) Dry the adobe for 48 hours and send it to a brick kiln, sinter at 1100°C for 10 hours, then cool an...

Embodiment 2

[0040] A method for preparing sintered bricks from water-based drilling cuttings, comprising the steps of:

[0041] (1) Water-based drilling cuttings are automatically added to the sinking continuous reactor, and 2.0% by mass of a modifier is added to the reactor for full reaction to obtain reformed solid waste; (2) the reformed The solid waste is transported to the brick factory, stacked and dried naturally for 7 days in the raw material area of ​​the brick factory, and then the modified solid waste is mixed with internal combustion materials and shale soil at a weight ratio of 60:8:52, crushed, and sieved. Obtain the mixture; (3) transfer the mixture to the brick mixing system, and then add 15% by mass of tap water, drilling waste water, fracturing flowback water and gas and oil recovery waste water, or a mixture of at least two, Stir, shape, and make adobe; (4) Dry the adobe for 60 hours and send it to a brick kiln, sinter at 900°C for 15 hours, then cool and leave the kiln t...

Embodiment 3

[0043] A method for preparing sintered bricks from water-based drilling cuttings, comprising the steps of:

[0044] (1) Water-based drilling cuttings are automatically added into the sinking continuous reactor, and 1.0% of the mass percent modifier is added to the reactor for full reaction to obtain the reformed solid waste; (2) the modified solid waste The solid waste is transported to the brick factory, stacked and dried naturally for 5 days in the raw material area of ​​the brick factory, and then the modified solid waste is mixed with internal combustion materials and shale soil at a weight ratio of 45:9:40, crushed, and sieved. Obtain the mixture; (3) transfer the mixture to the mixing system for brick making, then add a mixture of 12% by mass of tap water and drilling waste water, stir, shape, and make adobe; (4) dry the adobe for 55 hours and send it into The brick kiln is sintered at 1000°C for 12 hours, then cooled and discharged from the kiln to obtain the finished s...

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Abstract

The invention discloses a method for preparing a sintered brick by utilizing water base well drilling cuttings. The method comprises a step (1) of automatically adding the water base well drilling cuttings into a sunken continuous reactor, and adding a modifier into the reactor for reaction; a step (2) of conveying modified solid waste to a brick factory, mixing the solid waste with internal combustion materials and shale soil, and performing crushing and sieving; a step (3) of transferring the mixture into a brick manufacturing mixing system, adding water, stirring and shaping to make a green brick; a step (4) of drying the green brick and then sending the green brick into a brick kiln, sintering for 10-15 h and then cooling, taking the product out of the kiln, and obtaining the finished sintered brick. Waste mud is adopted for modification, so that the waste mud meets the component requirements for preparing the sintered shale brick, and harmful substances in the drilling cuttings are removed; when the modified drill cuttings are used for preparing the sintered brick, the process is simplified, and aging is not required. Waste water can also be used as mixing water, and not only is the solid waste recycling implemented, but also the waste water recycling is implemented.

Description

technical field [0001] The invention relates to the technical field of oil and gas field drilling cuttings waste treatment, in particular to a method for preparing sintered bricks by using water-based drilling cuttings. Background technique [0002] Shale gas reservoirs are unconventional natural gas reservoirs with dense rock reserves, large reserves, and difficult mining. With the world's successful shale gas development precedents in the United States being made public, countries around the world have become very interested in shale gas. , my country's shale gas reserves are abundant, but the geological structure is extremely complex. Therefore, its drilling and mining methods are quite different from those in the United States. In shale gas drilling engineering, due to the complex formation, deep well and horizontal well drilling process, the drilling fluid system is required to have comprehensive performance indicators such as good fluidity, lubricity and wellbore stabi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/132
CPCC04B33/1321C04B2235/656C04B2235/6567Y02P40/60
Inventor 欧海湖谭树成贾虎许云川孙永红刘颖蒋柯王欣张太亮
Owner BC P INC CHINA NAT PETROLEUM CORP
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