CN113149604A - Method for making bricks by using waste drilling mud and rock debris of oil and gas fields - Google Patents
Method for making bricks by using waste drilling mud and rock debris of oil and gas fields Download PDFInfo
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- CN113149604A CN113149604A CN202110501193.9A CN202110501193A CN113149604A CN 113149604 A CN113149604 A CN 113149604A CN 202110501193 A CN202110501193 A CN 202110501193A CN 113149604 A CN113149604 A CN 113149604A
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- 239000002699 waste material Substances 0.000 title claims abstract description 85
- 239000011449 brick Substances 0.000 title claims abstract description 48
- 239000011435 rock Substances 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000005553 drilling Methods 0.000 title claims abstract description 16
- 239000002002 slurry Substances 0.000 claims abstract description 66
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 51
- 229910001385 heavy metal Inorganic materials 0.000 claims abstract description 19
- 239000007800 oxidant agent Substances 0.000 claims abstract description 19
- 230000001590 oxidative effect Effects 0.000 claims abstract description 18
- 238000012545 processing Methods 0.000 claims abstract description 17
- 238000003756 stirring Methods 0.000 claims abstract description 15
- 238000007599 discharging Methods 0.000 claims abstract description 9
- 230000001376 precipitating effect Effects 0.000 claims abstract description 6
- 238000001914 filtration Methods 0.000 claims abstract description 4
- 239000004576 sand Substances 0.000 claims abstract description 4
- 239000004575 stone Substances 0.000 claims abstract description 4
- 238000010438 heat treatment Methods 0.000 claims description 37
- 239000002245 particle Substances 0.000 claims description 21
- 238000001035 drying Methods 0.000 claims description 19
- 239000003365 glass fiber Substances 0.000 claims description 15
- 238000001816 cooling Methods 0.000 claims description 7
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 claims description 5
- 238000010521 absorption reaction Methods 0.000 claims description 5
- 229910052740 iodine Inorganic materials 0.000 claims description 5
- 239000011630 iodine Substances 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- 239000002244 precipitate Substances 0.000 claims description 5
- 238000007873 sieving Methods 0.000 claims description 5
- 239000011148 porous material Substances 0.000 claims 2
- 238000012216 screening Methods 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000013461 design Methods 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 239000012634 fragment Substances 0.000 description 10
- 239000011454 mudbrick Substances 0.000 description 7
- 239000003795 chemical substances by application Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 238000009472 formulation Methods 0.000 description 5
- 238000007906 compression Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 239000000839 emulsion Substances 0.000 description 3
- 239000008187 granular material Substances 0.000 description 3
- 238000012805 post-processing Methods 0.000 description 3
- 230000001737 promoting effect Effects 0.000 description 3
- 230000002742 anti-folding effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002516 radical scavenger Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/06—Treatment of sludge; Devices therefor by oxidation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/13—Treatment of sludge; Devices therefor by de-watering, drying or thickening by heating
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Hydrology & Water Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Ceramic Engineering (AREA)
- Dispersion Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a method for making bricks by using waste slurry and rock debris generated in drilling of an oil and gas field, which comprises the following steps of (1) discharging the waste slurry to a filter screen through a conveyer belt, filtering sand and stone in the waste slurry through the filter screen, and collecting the dropped waste slurry through a barrel; (2) adding a demulsifier, an oxidant and a heavy metal catcher in a fixed proportion into the collected waste slurry, stirring clockwise at a stirring speed of 20-60 r/min for 3min, and then standing for 3 h; (3) adding water to make the height of the water exceed the whole height of the waste slurry by 10CM, and precipitating for 20 min; by the design of the invention, the treatment efficiency of the waste slurry can be greatly improved, the waste slurry can be quickly applied, meanwhile, the removal of harmful substances in the waste slurry can be ensured, the later-stage processing production is easy, and the screening and the later-stage treatment processing of rock debris are improved, so that the stability of the finished brick product is improved.
Description
Technical Field
The invention belongs to the technical field of oil and gas field waste utilization, and particularly relates to a method for making bricks by using oil and gas field drilling waste mud and rock debris.
Background
The waste mud and carried objects in oil gas drilling and urban foundation engineering construction drilling exist in a colloid and semisolid state, the generated waste mud is invariable for a long time, occupies a large amount of land and seriously pollutes the environment, the waste mud is one of oil-containing sludge pollution sources which are difficult to treat in oil gas production processes at home and abroad, the waste mud particles are widely distributed, the oil content is large, the components are complex, the treatment difficulty is large, and the recovery value is high.
The technology that current utilized oil gas field well drilling abandonment mud and detritus brickmaking all has great not enough in the screening and the processing in later stage to the detritus, leads to the fashioned fragment of brick in later stage to appear easy cracked phenomenon easily to and in the processing to abandonment mud, secondary pollution is caused easily to current processing mode, and whole process time is longer, still has great limitation in practical application, thereby possesses the space that can improve into.
Disclosure of Invention
The invention aims to provide a method for making bricks by using waste drilling mud and rock debris of an oil and gas field, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a method for making bricks by using waste drilling mud and rock debris of oil and gas fields comprises the following steps:
the method comprises the following steps: discharging the waste slurry to a filter screen through a conveyor belt, filtering sand and stone in the waste slurry through the filter screen, and collecting the dropped waste slurry through a barrel;
step two: adding the collected waste slurry into the slurry in a ratio of 3: 3: 4, stirring the demulsifier, the oxidant and the heavy metal catcher clockwise at the stirring speed of 20-60 r/min for 3-6 min, and then standing for 1-3 h;
step three: adding water to enable the height of the water to exceed the overall height of the waste slurry by 1-10 CM, and precipitating for 10-20 min;
step four: after standing, removing flocculent precipitate at the bottom of the water body, namely the top of the waste slurry, then discharging the water body, and heating the barrel body filled with the waste slurry;
step five: stopping heating when the water content in the waste slurry is 15-20%, and standing and cooling;
step six: and (3) after the rock debris is treated, adding the rock debris into the waste slurry cooled in the step five according to the proportion, stirring, and adding glass fibers, wherein the proportion of the rock debris to the waste slurry to the glass fibers is 3: 6: and 1, completing brick making.
Preferably, the filter screen in the first step is divided into four layers, the intervals between every two layers are equal, the screen holes of the filter screen on each layer are sequentially reduced from top to bottom, and the screen holes of the filter screen on the top are 4-5 meshes.
Preferably, the heating temperature in the fourth step is increased by 10-15 ℃ every 5min, the initial temperature is 0 ℃, and the temperature is rapidly increased to 100 ℃ and then gradually increased for heating.
Preferably, in the fifth step, the iodine content of the glass fiber is lower than 2%.
Preferably, the rock debris in the fifth step is processed as follows:
s1: crushing rock debris to obtain particles with the particle size of 3-5 um, and drying at high temperature to ensure that the water content of the particles is 0-1%;
s2: sieving the particles obtained in S1 to remove powder;
s3: and (4) secondary heating and drying to enlarge the gaps in the particles and improve the water absorption rate in the later period.
Preferably, the high-temperature drying temperature in the S1 is 200-400 ℃, and the drying time is 10-15 min; the heating temperature in the S3 is 500-700 ℃, and the heating time is 2-3 min.
Compared with the prior art, the invention has the beneficial effects that:
by the design of the invention, the treatment efficiency of the waste slurry can be greatly improved, the waste slurry can be quickly applied, meanwhile, the removal of harmful substances in the waste slurry can be ensured, the later-stage processing production is easy, and the screening and the later-stage treatment processing of rock debris are improved, so that the stability of the finished brick product is improved.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The invention provides a technical scheme that: a method for making bricks by using waste drilling mud and rock debris of oil and gas fields comprises the following steps:
the method comprises the following steps: discharging the waste slurry to a filter screen through a conveyor belt, filtering sand and stone in the waste slurry through the filter screen, and collecting the dropped waste slurry through a barrel;
step two: adding the collected waste slurry into the slurry in a ratio of 3: 3: 4, stirring the demulsifier, the oxidant and the heavy metal catcher clockwise at a stirring speed of 60r/min for 3min, and then standing for 1 h;
the properties of the slurry brick corresponding to the ratios of the demulsifier, the oxidant and the heavy metal capturing agent are shown in table 1:
| proportion of demulsifier, oxidant and heavy metal catcher | 4：3：3 | 2：3：5 | 3：3：4 |
| Flexural strength/MPa | 4.5 | 5.3 | 6.6 |
| Compressive strength/MPa | 6.8 | 8.9 | 9.7 |
From the data, the proportion of the demulsifier, the oxidant and the heavy metal capturing agent is reasonably adjusted, so that the overall breaking strength and the compressive strength of the brick can be effectively improved, and the numerical values of the breaking strength and the compressive strength of the existing brick making are lower than those in the table. From the data, the proportion of different demulsifiers, oxidants and heavy metal capture agents has important influence on the performance of the mud brick;
step three: adding water to make the height of the water exceed the whole height of the waste slurry by 1CM, and precipitating for 10 min;
step four: after standing, removing flocculent precipitate at the bottom of the water body, namely the top of the waste slurry, then discharging the water body, and heating the barrel body filled with the waste slurry;
step five: stopping heating when the water content in the waste slurry is 15%, standing and cooling;
step six: and (3) after the rock debris is treated, adding the rock debris into the waste slurry cooled in the step five according to the proportion, stirring, and adding glass fibers, wherein the proportion of the rock debris to the waste slurry to the glass fibers is 3: 6: and 1, completing brick making.
The properties of the mud bricks corresponding to the proportions of different rock debris, waste mud and glass fiber are shown in table 2:
| ratio of rock debris, waste slurry and glass fiber agent | 4：5.2：0.8 | 3：6：1 | 3：5：2 |
| Flexural strength/MPa | 4.5 | 8.3 | 8.32 |
| Compressive strength/MPa | 6.6 | 10.9 | 10.93 |
From the data, the overall bending strength and compressive strength of the brick can be improved and the brick making cost can be reduced by reasonably adjusting the proportion of the rock debris, the waste slurry and the glass fiber, and meanwhile, the bending strength and compressive strength of the brick are not obviously improved when the added glass fiber is high, and the overall cost is very high, so that the proportion provided by the invention is an optimal scheme.
The properties of the mud brick obtained according to the above process and the mud formulation given below are as given in table 3:
from the data in the table, it can be seen that the demulsifier, the oxidant and the heavy metal scavenger are added into the waste mud with the same water content, and the brick prepared in the same time has higher mechanical strength, so that the mechanical strength of the brick can be improved through the processing of the second step to the fifth step.
In this embodiment, the filter screen in the first step is divided into four layers, the intervals between each layer are equal, the screen holes of each layer of filter screen are sequentially reduced from top to bottom, and the screen holes of the filter screen at the top are 4 meshes.
In this embodiment, the heating temperature in step four is increased by 10 ℃ every 5min, the initial temperature is 0 ℃, and after the temperature is rapidly increased to 100 ℃, the temperature is gradually increased and the heating is performed.
In this example, the iodine content of the glass fiber in step five was 1%.
In this embodiment, the processing manner of the rock debris in the fifth step is as follows:
s1: crushing the rock debris to obtain particles with the particle size of 3um, and drying at high temperature to ensure that the water content of the particles is 0%;
s2: sieving the particles obtained in S1 to remove powder;
s3: the secondary heating is dry for the inside space increase of granule improves the water absorption ratio in later stage, has improved screening and the post processing to the detritus, makes the off-the-shelf steadiness of fragment of brick obtain promoting.
Referring to table 4:
after selecting through to the detritus, can improve the compressive strength and the rupture strength of fragment of brick, can derive from referring to table 3 simultaneously, after adopting crushing, screening, drying and secondary heating to the detritus, rupture strength and compressive strength can be higher than simple crushing screening and select the fragment of brick of making.
In this embodiment, the high-temperature drying temperature in S1 is 200 ℃, and the drying time is 10 min; the heating temperature in S3 was 500 ℃ and the heating time was 2 min.
As shown in reference table 1 to reference table 3, in the waste mud who selects the same moisture content, add the demulsifier, the oxidant, the mode that the heavy metal catching agent does not add is compared, the resistance to compression and the intensity of anti-folding of promotion fragment of brick that can great degree, simultaneously with the demulsifier, the oxidant, the heavy metal catching agent three is joined in marriage according to fixed ratio, and to the screening drying of detritus, anti-folding and compressive strength after the promotion fragment of brick that can be very big makes, the fragment of brick of making can adapt to the processing environment of multiple difference, improve the application range of fragment of brick.
Example 2
The difference from example 1 is that:
step two: adding the collected waste slurry into the slurry in a ratio of 3: 3: 4, stirring the mixture clockwise at the stirring speed of 40r/min for 4min, and then standing for 2 h;
step three: adding water to make the height of the water exceed the whole height of the waste slurry by 10CM, and precipitating for 15 min;
step four: after standing, removing flocculent precipitate at the bottom of the water body, namely the top of the waste slurry, then discharging the water body, and heating the barrel body filled with the waste slurry;
step five: stopping heating when the water content in the waste slurry is 18%, standing and cooling;
the properties of the mud brick obtained according to the above process and the mud formulation given below are as given in table 5:
compared with the brick prepared without the emulsion, the oxidant and the heavy metal catcher, the brick prepared by adding the emulsion breaker, the oxidant and the heavy metal catcher into the waste mud with the same water content has higher mechanical strength, has better overall performance and can be normally used although the fracture resistance and compression resistance values of the two are changed compared with the brick prepared without the emulsion, the oxidant and the heavy metal catcher in the waste mud with the water content of 15 percent in the embodiment 1, so the mechanical strength of the brick can be improved by processing the steps two to five;
in this embodiment, preferably, the filter screen in the first step is divided into four layers, the intervals between each layer are equal, the screen holes of each layer of filter screen are sequentially reduced from top to bottom, and the screen holes of the filter screen at the top are 4.5 meshes.
In this embodiment, the heating temperature in step four is increased by 12 ℃ every 5min, the initial temperature is 0 ℃, and the temperature is increased to 100 ℃ rapidly, and then the temperature is increased gradually.
In the embodiment, the iodine content of the glass fiber in the fifth step is 1.5 percent
In this embodiment, the processing manner of the rock debris in the fifth step is as follows:
s1: crushing the rock debris to obtain particles with the particle size of 4um, and drying at high temperature to ensure that the water content of the particles is 0.1%;
s2: sieving the particles obtained in S1 to remove powder;
s3: the secondary heating is dry for the inside space increase of granule improves the water absorption ratio in later stage, has improved screening and the post processing to the detritus, makes the off-the-shelf steadiness of fragment of brick obtain promoting.
In this embodiment, preferably, the high-temperature drying temperature in S1 is 300 ℃, and the drying time is 12 min; the heating temperature in S3 was 600 ℃ and the heating time was 2.3 min.
Example 3
The difference from the above embodiment is that:
step two: adding the collected waste slurry into the slurry in a ratio of 3: 3: 4, stirring the demulsifier, the oxidant and the heavy metal catcher clockwise at the stirring speed of 60r/min for 6min, and then standing for 3 h;
step three: adding water to make the height of the water exceed the whole height of the waste slurry by 10CM, and precipitating for 20 min;
step four: after standing, removing flocculent precipitate at the bottom of the water body, namely the top of the waste slurry, then discharging the water body, and heating the barrel body filled with the waste slurry;
step five: stopping heating when the water content in the waste slurry is 20%, standing and cooling;
the properties of the mud brick obtained according to the above process and the mud formulation given below are as given in table 6:
compared with the brick made of the waste mud with the water content of 15% in the example 1, the brick made of the waste mud with the water content of 15% has better overall performance and can be normally used although the fracture resistance and compression resistance values of the waste mud with the water content of the same are changed, so that the mechanical strength of the brick can be improved through the processing of the steps two to five;
in this embodiment, the filter screen in the first step is divided into four layers, the intervals between each layer are equal, the screen holes of each layer of filter screen are sequentially reduced from top to bottom, and the screen holes of the filter screen at the top are 5 meshes.
In this embodiment, the heating temperature in step four is increased by 15 ℃ every 5min, the initial temperature is 0 ℃, and after the temperature is rapidly increased to 100 ℃, the temperature is gradually increased and the heating is performed.
In the embodiment, the iodine content of the glass fiber in the fifth step is 0.5 percent
In this embodiment, the processing manner of the rock debris in the fifth step is as follows:
s1: crushing rock debris to 5um, and drying at high temperature to make the water content of the particle size of 1%;
s2: sieving the particles obtained in S1 to remove powder;
s3: the secondary heating is dry for the inside space increase of granule improves the water absorption ratio in later stage, has improved screening and the post processing to the detritus, makes the off-the-shelf steadiness of fragment of brick obtain promoting.
In this embodiment, preferably, the high-temperature drying temperature in S1 is 400 ℃, and the drying time is 15 min; the heating temperature in S3 was 700 ℃ and the heating time was 3 min.
Example 4
Step five: stopping heating when the water content in the waste slurry is 12%, standing and cooling;
the properties of the mud brick obtained according to the above process and the mud formulation given below are as given in table 7:
in the waste slurry with the water content of 15 percent lower, the bricks prepared by adding the demulsifier, the oxidant and the heavy metal catcher have higher mechanical strength as a whole than the bricks prepared by not adding the demulsifier, the oxidant and the heavy metal catcher, but the whole quality is still at a lower level, so that in the processing of the early-stage water content of the waste slurry, the water content is not lower than 15 percent, and the quality of the finished products at the later stage can be ensured not to be influenced.
Example 5
Step five: stopping heating when the water content in the waste slurry is 20%, standing and cooling;
the properties of the mud brick obtained according to the above process and the mud formulation given below are as given in table 8:
in the waste slurry with the water content higher than 20%, the mechanical strength of the brick blocks prepared by adding the demulsifier, the oxidant and the heavy metal catcher is integrally higher than that of the brick blocks prepared by not adding the lower demulsifier, the oxidant and the heavy metal catcher, but the integral breaking strength and compressive strength are still lower due to higher water content, so that the compressive strength and the breaking strength of later-stage brick making can be ensured to be not higher than 20% in the processing of the early-stage water content of the waste slurry
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A method for making bricks by using waste drilling mud and rock debris of oil and gas fields is characterized by comprising the following steps: the method comprises the following steps:
the method comprises the following steps: discharging the waste slurry to a filter screen through a conveyor belt, filtering sand and stone in the waste slurry through the filter screen, and collecting the dropped waste slurry through a barrel;
step two: adding the collected waste slurry into the slurry in a ratio of 3: 3: 4, stirring the demulsifier, the oxidant and the heavy metal catcher clockwise at the stirring speed of 20-60 r/min for 3-6 min, and then standing for 1-3 h;
step three: adding water to enable the height of the water to exceed the overall height of the waste slurry by 1-10 CM, and precipitating for 10-20 min;
step four: after standing, removing flocculent precipitate at the bottom of the water body, namely the top of the waste slurry, then discharging the water body, and heating the barrel body filled with the waste slurry;
step five: stopping heating when the water content in the waste slurry is 15-20%, and standing and cooling;
step six: and (3) after the rock debris is treated, adding the rock debris into the waste slurry cooled in the step five according to the proportion, stirring, and adding glass fibers, wherein the proportion of the rock debris to the waste slurry to the glass fibers is 3: 6: and 1, completing brick making.
2. The method for making bricks by using oil and gas field drilling waste mud and rock debris as claimed in claim 1, wherein the method comprises the following steps: the filter screen in the first step is divided into four layers, the intervals between every two layers are equal, the sieve pores of the filter screen on each layer are sequentially reduced from top to bottom, and the sieve pores of the filter screen on the top are 4-5 meshes.
3. The method for making bricks by using oil and gas field drilling waste mud and rock debris as claimed in claim 1, wherein the method comprises the following steps: and in the fourth step, the heating temperature is increased by 10-15 ℃ every 5min, the initial temperature is 0 ℃, and the temperature is rapidly increased to 100 ℃ and then gradually increased for heating.
4. The method for making bricks by using oil and gas field drilling waste mud and rock debris as claimed in claim 1, wherein the method comprises the following steps: in the fifth step, the iodine content of the glass fiber is lower than 2 percent.
5. The method for making bricks by using oil and gas field drilling waste mud and rock debris as claimed in claim 1, wherein the method comprises the following steps: the processing mode of the rock debris in the fifth step is as follows:
s1: crushing rock debris to obtain particles with the particle size of 3-5 um, and drying at high temperature to ensure that the water content of the particles is 0-1%;
s2: sieving the particles obtained in S1 to remove powder;
s3: and (4) secondary heating and drying to enlarge the gaps in the particles and improve the water absorption rate in the later period.
6. The method for making bricks by using oil and gas field drilling waste mud and rock debris as claimed in claim 5, wherein the method comprises the following steps: the high-temperature drying temperature in the S1 is 200-400 ℃, and the drying time is 10-15 min; the heating temperature in the S3 is 500-700 ℃, and the heating time is 2-3 min.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116409964A (en) * | 2021-12-31 | 2023-07-11 | 中国石油天然气股份有限公司 | Baking-free brick prepared from water-based drilling cuttings and method |
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