CN110092554A - A kind of processing method about oilfield drilling spare - Google Patents
A kind of processing method about oilfield drilling spare Download PDFInfo
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- CN110092554A CN110092554A CN201910351582.0A CN201910351582A CN110092554A CN 110092554 A CN110092554 A CN 110092554A CN 201910351582 A CN201910351582 A CN 201910351582A CN 110092554 A CN110092554 A CN 110092554A
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- 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
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- 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
- C02F11/002—Sludge treatment using liquids immiscible with water
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- 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
- C02F11/02—Biological treatment
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- 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
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
- C02F11/147—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents using organic substances
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F7/00—Fertilisers from waste water, sewage sludge, sea slime, ooze or similar masses
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/80—Soil conditioners
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/14—Soil-conditioning materials or soil-stabilising materials containing organic compounds only
- C09K17/18—Prepolymers; Macromolecular compounds
- C09K17/32—Prepolymers; Macromolecular compounds of natural origin, e.g. cellulosic materials
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- 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
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- 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
- C02F2101/22—Chromium or chromium compounds, e.g. chromates
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- 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
- C02F2101/30—Organic compounds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2101/00—Agricultural use
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2105/00—Erosion prevention
Abstract
The invention discloses a kind of processing methods about oilfield drilling spare, are specifically implemented according to the following steps: step 1, the stalk of crushing will be added in the drilling well spare of situ of drilling well generation, stir evenly；Step 2, humic acid will be added in the drilling well spare handled through step 1, the heavy metal ion in drilling well spare is complexed；Step 3, microorganism formulation will be accessed in the drilling well spare handled through step 2, that is, completes the processing to drilling well spare.Treated, and drilling well spare is suitable for the production of plant, improves the yield, quality and nutritional ingredient of plant, and content of beary metal is suitable for plantation within the scope of agricultural product security quality index, turns waste into wealth, environmentally friendly and at low cost.
Description
Technical field
The invention belongs to soil pollution improving technology fields, and in particular to a kind of processing side about oilfield drilling spare
Method.
Background technique
Currently, environmental protection is a fundamental state policy in China, keeps the sustainable and harmonious development of society, economy and environment
Have become the strategic task and target in China.With environmental legislation constantly improve and reinforcement of the people to environmental consciousness,
Relevant departments have formulated every pollution regulations in succession, it will any discharge of stringent limitation drilling mud landwaste.In petroleum
With drilling fluid during gas drilling be must be indispensable valuable cargo.To achieve the purpose that safety, rapid drilling, use
Various types of drilling fluid additives, and as drilling depth increases and difficulty increases, need to be added when preparing mud water and
Various oil products and bentonite, heavy weight additive for being added for lubricating action etc.；The mud additive being added to improve mud property
There are the substances such as inorganic salts, inorganic polymer, organic matter, synthetic high polymer and surfactant.Due to drilling depth increase and
The extension of drilling period and the type of mud increase significantly, and addition species are also more and more, so that various in discarded slurry
The concentration of ingredient is higher and higher, and a bite drilling well additive up to tens kinds of substances, weight in drilling fluid are being bored up to as many as hundred tons
After the completion of well operations, most drilling fluids are held under the arm to well, also to include drilling ground in addition to preparing substance added by mud
As many as nearly kiloton of wastes such as mixed underground water, drilling cuttings, clay, crude oil when layer.Due to the field work feature of oil/gas drilling,
How to carry out processing to well drilling waste mud seems and becomes more and more important, be oil gas production of energy and ecological environmental protection face for a long time and
The problem in science that must be solved.If none good processing mode, mud landwaste unavoidably becomes pollutant, to mud
Landwaste is dealt with improperly, causes serious influence to ambient enviroments such as soil, surface water and groundwaters, is that plant growth and people and animals pacify
Hidden danger, long-term hazards local environment have been buried entirely；Processing utilization is proper, will play on agriculture-stock production as resource huge
Big effect.
Currently, mainly having to drilling wastes processing technique both at home and abroad: simple treatment in situ discharges, strange land focuses on,
Sealing, soil cultivating, solidification, solid-liquid separation, burning, microbiological treatment etc. in backfill processing, hole.But these processing method bases
All there is a problem of that an economic benefit and environmental benefit cannot be satisfactory to both parties in sheet: (1) high treating effect, cost is too high；Such as
Traditional direct curing process, method are that natural subsidence forms clear liquid and dirty under the effect of gravity for the waste that allows in cesspool
Mud, then exhausts upper clear supernate, and remaining mud adds curing agent and directly solidifies, then fills.This method is located due to needing
Water content is higher in the waste total amount of reason, very big to chemical consumption, and at high cost, effect is also undesirable, cannot disappear completely
Depollution hidden danger；(2) processing cost is low, and environmental requirement is not achieved again；Such as soil cultivating method, it is to remove drilling wastes
After partial moisture, by waste sludge stock tank sludge and drilling cuttings directly spray to soil hereinafter, being mixed with soil after, utilize soil
The effects of conversion characteristic of earth itself such as absorption, absorption and biodegrade, to achieve the purpose that handle drilling wastes.But
Due to containing some soluble-salt organic salt, organic pollutant and heavy metal etc. in drilling wastes, long-term in this method
Migration stain underground water source is easy to happen under conditions of drenching with rain, and heavy metal ion therein is absorbed by plants, cause its to
Other biosystem transfers, to cause more serious harm to the living environment of the mankind.Therefore, it is restrained in National Environment Policy Act
Under the increasingly strict status of laws and regulations requirement, and resource utilization innoxious to well drilling detritus mud how is realized, carry out to landwaste
The research of mud process for comprehensively treating is the economy of landwaste mud disposition for final innoxious, the recycling for realizing landwaste mud
Property, environmental safety create conditions, to realizing that blue montains and green waters, Sustainable Development of preserving the ecological environment have important practical significance.
Summary of the invention
The object of the present invention is to provide a kind of processing methods about oilfield drilling spare, solve existing processing drilling well mud
The method of bits is big to soil damage, not environmentally and the high problem of processing cost.
The technical scheme adopted by the invention is that a kind of processing method about oilfield drilling spare, specifically according to
Lower step is implemented:
Step 1, the stalk of crushing will be added in the drilling well spare of situ of drilling well generation, stir evenly；
Step 2, humic acid will be added in the drilling well spare handled through step 1, the heavy metal ion in drilling well spare is complexed；
Step 3, microorganism formulation will be accessed in the drilling well spare handled through step 2, that is, completes the processing to drilling well spare.
The features of the present invention also characterized in that
In step 1, the mass ratio of drilling well spare and stalk is 1:0.05~0.2.
In step 1, the partial size of stalk is 5mm~50mm.
In step 2, the mass ratio of drilling well spare and humic acid is 1:0.1~0.15.
In step 2, heavy metal ion is one or more of arsenic, mercury, lead, cadmium, chromium.
In step 3, the mass ratio of drilling well spare and microorganism formulation is 1:0.005~0.01.
In step 3, microorganism formulation is colloid bacillus cereus or bacillus subtilis.
The invention has the advantages that
(1) a kind of processing method about oilfield drilling spare of the present invention supplements carbon-based battalion using the stalk of crushing
It supports, and is the first nutrient needed for current plant growth；Moisture in spare is absorbed simultaneously, reduces spare water content to 20%
~30% or less；
(2) a kind of processing method about oilfield drilling spare of the present invention, utilizes humic acid high molecular surfactant
Excellent suction-operated, chelation, multi-functional bonding action, are complexed heavy metal in mud, to organic matter into
Row is modified, and is obtained that mud attribute can be significantly improved, is improved soil aggregate structure, and the soil for being exclusively used in improving desert soil earth can be made
Earth modifying agent；
(3) a kind of processing method about oilfield drilling spare of the present invention adds microorganism formulation, using microorganism with
Soil cooperates with facilitation, and the two combines the ability that may advantageously facilitate and improve degradation of contaminant, is conducive to microorganism for drilling well
Complicated organic matter a part in spare is converted to extractions of humic substance, and a part is degraded to simple inorganic matter even CO2And H2O,
To make the pollutant in drilling well spare be removed, achieve the purpose that resource utilization.
(4) a kind of processing method about oilfield drilling spare of the present invention, the drilling well spare after capable of making improvement become
Have and supports soil and soil conditioner applied in the production of farming and pastoral area.
Specific embodiment
The present invention is described in detail With reference to embodiment:
A kind of processing method about oilfield drilling spare of the present invention, is specifically implemented according to the following steps:
Step 1, the stalk of crushing will be added in the drilling well spare of situ of drilling well generation, stalk partial size is 5mm~50mm, is bored
The mass ratio of well spare and stalk is 1:0.05~0.2, is stirred evenly；
Step 2, humic acid will be added in the drilling well spare handled through step 1, the mass ratio of drilling well spare and humic acid is
1:0.1~0.15, is complexed the heavy metal ion in drilling well spare, and heavy metal ion is one of arsenic, mercury, lead, cadmium, chromium or several
Kind；
Step 3, microorganism formulation will be accessed in the drilling well spare handled through step 2, drilling well spare and microorganism formulation
Mass ratio is 1:0.005~0.01, and microorganism formulation is colloid bacillus cereus or bacillus subtilis, that is, is completed to drilling well spare
Processing.
Embodiment 1
Step 1, by the stalk that crushing is added in the drilling well spare of situ of drilling well generation (partial size is 5mm~50mm), drilling well
The mass ratio of spare and stalk is 1:0.05, is stirred evenly；
Step 2, humic acid will be added in the drilling well spare handled through step 1, the mass ratio of drilling well spare and humic acid is
1:0.12, is complexed the heavy metal ion in drilling well spare, and heavy metal ion is one or more of arsenic, mercury, lead, cadmium, chromium；
Step 3, microorganism formulation will be accessed in the drilling well spare handled through step 2, drilling well spare and microorganism formulation
Mass ratio is 1:0.005, and microorganism formulation is colloid bacillus cereus or bacillus subtilis, that is, completes the place to drilling well spare
Reason.
Embodiment 2
Step 1, by the stalk that crushing is added in the drilling well spare of situ of drilling well generation (partial size is 5mm~50mm), drilling well
The mass ratio of spare and stalk is 1:0.1, is stirred evenly；
Step 2, humic acid will be added in the drilling well spare handled through step 1, the mass ratio of drilling well spare and humic acid is
1:0.1, is complexed the heavy metal ion in drilling well spare, and heavy metal ion is one or more of arsenic, mercury, lead, cadmium, chromium；
Step 3, microorganism formulation will be accessed in the drilling well spare handled through step 2, drilling well spare and microorganism formulation
Mass ratio is 1:0.008, and microorganism formulation is colloid bacillus cereus or bacillus subtilis, that is, completes the place to drilling well spare
Reason.
Embodiment 3
Step 1, by the stalk that crushing is added in the drilling well spare of situ of drilling well generation (partial size is 5mm~50mm), drilling well
The mass ratio of spare and stalk is 1:0.2, is stirred evenly；
Step 2, humic acid will be added in the drilling well spare handled through step 1, the mass ratio of drilling well spare and humic acid is
1:0.15, is complexed the heavy metal ion in drilling well spare, and heavy metal ion is one or more of arsenic, mercury, lead, cadmium, chromium；
Step 3, microorganism formulation will be accessed in the drilling well spare handled through step 2, drilling well spare and microorganism formulation
Mass ratio is 1:0.01, and microorganism formulation is colloid bacillus cereus or bacillus subtilis, that is, completes the processing to drilling well spare.
Above-mentioned 3 embodiments processing method according to the invention handles drilling spare, and the present invention is additionally provided with sky
White control, the test carried out in Changqing oilfields, i.e., drilling well spare is without any processing；The crop of plantation is corn, semen sojae atricolor, height
Totally 7 kinds of fine strain of millet, potato, clover, millet, buckwheat, to embodiment 1, embodiment 2, embodiment 3 and the growing area plant of blank control
Sample and pedotheque are acquired, and 7 kinds of plants respectively acquire 20 parts, and pedotheque respectively acquires 50 parts, and is analyzed.
After handling acquisition soil sample drilling well spare and the nutritional ingredient of blank control detects, and see Table 1 for details for testing result；
Nutritional ingredient compares 1 drilling well spare of table before and after the processing
As seen from the above table, method processed by the invention treated drilling well spare is worth with mineral nutrition abundant, energy
Meet crop growth nutritional need, significantly improves and improve crop yield and quality, it can be directly as fertilizer application or work
For soil conditioner.
Plant is carried out to 7 kinds of the plant sample corn of acquisition, semen sojae atricolor, sorghum, potato, clover, buckwheat and millet crops
Output, yield, quality and content of beary metal are recorded and are detected, specific as follows:
(1) biomass: biomass be reflect crop growth conditions one of important indicator, with Grain Growth Situation, per unit area yield and
The formation of yield is closely related, test result show drilling well spare processing after crops ground biomass be higher than processing before.Place
Spare corn ground biomass is 1607.1~2649.9kg/ mus after reason, compared with before processing, amplification 5.18%~
51.5%, averagely increase by 23.9%；Sorghum ground biomass increases by 10.4%；Clover ground biomass averagely increases by 15.8%；
Buckwheat ground biomass difference is most obvious, and buckwheat average biomass is 3.62 times before processing after processing.
(2) yield: crop plants corn, the buckwheat, jowar, millet, soybean, potato, 7 kinds of clover of spare area plantation after processing
Crop shows as significantly increasing production, and see Table 2 for details for test result；
2 crop yield situation of table compares (unit: kg/ mus)
As seen from the above table, method processed by the invention treated drilling well spare, the crop of plantation are increased production, and illustrate this hair
Bright processing method is feasible, is conducive to the production of crop.
(3) to the influence of crop quality, test result shows: using the drilling well spare of processing method of the present invention processing to paddy
The growth and development of class crop and quality improve significantly and raising effect.Treated, and drilling well spare makes to improve corn kernel
The content of crude protein, average value 8.67%, crude protein averagely improves 2.11% before relatively handling；Treated drilling well spare
Make the content for improving seed reducing sugar, content averagely improves 5.13% before relatively handling；Treated, and drilling well spare makes to mention
High Seed Starch Content in Maize, average value 53.55%, the content of corn kernel Crude starch is 52.63% before handling, and is located
Seed Starch Content in Maize after reason improves 0.92% compared with the Seed Starch Content in Maize before processing.
Using processing method of the present invention, treated that drilling well spare significantly improves the crude protein and reducing sugar of potato
13.58% and 45.98% has been respectively increased in average content；Buckwheat and the reducing sugar average content of sorghum are respectively increased
38.90% and 47.01%, the influence to other index of quality is little.
Using processing method of the present invention, treated that drilling well spare significantly improves herbage reducing sugar and content of starch, with
It compares before processing, 28.12% and 8.42% has been respectively increased in clover reproducibility sugar and starch average content.
(4) crop production safety is assessed: according to " national food safety standard pollutants in food limitation (GB 2762-
2017) crops (cereal/beans) Evaluation of Heavy Metals Pollution standard, " national forage health standard (GB13078-91) " " are used as
As clover Evaluation of Heavy Metals Pollution standard (being shown in Table 3), to growing area agricultural product (cereal and herbage) each after processing and clover into
The testing result of row heavy metal shows:
A, contents of heavy metal elements is in safe condition in agricultural product, and it is exceeded to find no sample value.With food safety
National standard compares, and corn heavy metal Cd average content is 0.079mg/kg, and Cr average content is 0.81mg/kg；A semen sojae atricolor huge sum of money
Belong to Cd average content in 0.055mg/kg, the average content of semen sojae atricolor heavy metal Cr is 0.032mg/kg, corn and other farmings
For object content of beary metal in food pollution limitation range, agricultural product edible part is in a safe condition.
B, the clover of plantation is in a safe condition.Compared with national forage health standard, clover heavy metal Pb content is
0.75mg/kg, Cr content average out to 0.09mg/kg, As content average out to 0.21mg/kg, as feed product clover without departing from
Pollutant limitation range, it is in a safe condition.
3 agricultural product security quality index (mg/kg) of table
By A, B, the result shows that, the cereal/beans and herbage of processing method of the present invention treated drilling well spare plantation exist
Within the scope of agricultural product security quality index.
(5) from the analysis of amino acids result of processing method of the present invention treated drilling well spare area crops:
Compared with before processing, Amino-Acids of Maize averagely increases the corn kernel total amino acid content planted in drilling well spare after processing
27.6%；The agricultural product total amino acid content such as buckwheat, millet, semen sojae atricolor and potato also significantly improves, and plants in drilling well spare after processing
The Buckwheat amino acid total amount of plant averagely improves 36.0% before relatively handling；The semen sojae atricolor amino acid content planted in drilling well spare after processing
Averagely increase by 27.0%；The potato total amino acid content planted in drilling well spare after processing averagely improves 27.3%；It is bored after processing
The amino acid for the clover planted in the well spare total content that is averaged is 3.4kg/ mu, and content before processing is 1.98kg/ mus, is averagely mentioned
It is high by 71.7%.
A kind of processing method about oilfield drilling spare of the present invention, by the test in Changqing oilfields, to generation
Drilling well spare is transported through processing at any time, and not only in-situ processing speed is fast, and effect is good, occupied area is small, and farming in well site
Produce amount, quality-improving are significant, and 72.5% and 36.9% is respectively increased in the height and cover degree of pastoral area dominant population, achieve good
Economic benefit, social benefit and environmental benefit.Processing method of the present invention supplements carbon-based nutrition, and be using the stalk crushed
First nutrient needed for current plant growth；Utilize the excellent suction-operated of humic acid high molecular surfactant, chelating
Effect, multi-functional bonding action, are complexed heavy metal in mud, are modified to organic matter, obtain significantly changing
Kind mud attribute, improves soil aggregate structure, and the soil conditioner for being exclusively used in improving desert soil earth can be made；Add microorganism
Preparation cooperates with facilitation with soil using microorganism, and the two is combined the ability that may advantageously facilitate and improve degradation of contaminant, had
Complicated organic matter a part in drilling well spare is converted to extractions of humic substance conducive to microorganism, a part is degraded to simple nothing
Machine object even CO2And H2O achievees the purpose that resource utilization so that the pollutant in drilling well spare be made to be removed.After processing
Drilling well spare be suitable for plant production, improve the yield, quality and nutritional ingredient of plant, and content of beary metal is in agricultural production
In product safe mass indication range, it is suitable for plantation, turns waste into wealth, is environmentally friendly and at low cost.
Claims (7)
1. a kind of processing method about oilfield drilling spare, which is characterized in that be specifically implemented according to the following steps:
Step 1, the stalk of crushing will be added in the drilling well spare of situ of drilling well generation, stir evenly；
Step 2, humic acid will be added in the drilling well spare handled through step 1, the heavy metal ion in drilling well spare is complexed；
Step 3, microorganism formulation will be accessed in the drilling well spare handled through step 2, that is, completes the processing to drilling well spare.
2. a kind of processing method about oilfield drilling spare according to claim 1, which is characterized in that in step 1,
The mass ratio of drilling well spare and stalk is 1:0.05~0.2.
3. a kind of processing method about oilfield drilling spare according to claim 1, which is characterized in that in step 1,
The partial size of stalk is 5mm~50mm.
4. a kind of processing method about oilfield drilling spare according to claim 1, which is characterized in that in step 2,
The mass ratio of drilling well spare and humic acid is 1:0.1~0.15.
5. a kind of processing method about oilfield drilling spare according to claim 1, which is characterized in that in step 2,
Heavy metal ion is one or more of arsenic, mercury, lead, cadmium, chromium.
6. a kind of processing method about oilfield drilling spare according to claim 1, which is characterized in that in step 3,
The mass ratio of drilling well spare and microorganism formulation is 1:0.005~0.01.
7. a kind of processing method about oilfield drilling spare according to claim 1, which is characterized in that in step 3,
Microorganism formulation is colloid bacillus cereus or bacillus subtilis.
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| CN110835211A (en) * | 2019-11-01 | 2020-02-25 | 四川海缘乾豪环保科技有限公司 | Method for treating sludge containing chemical agent |
| CN112341275A (en) * | 2020-11-11 | 2021-02-09 | 宁夏陈敷生态科技有限公司 | Good carrier capable of preserving agricultural microbial agent for long time |
| CN113135799A (en) * | 2021-05-25 | 2021-07-20 | 宁夏润地农牧科技有限公司 | Process method for producing sand control water-retaining agent by using water-based drilling rock debris |
| CN114014731A (en) * | 2021-11-16 | 2022-02-08 | 中国矿业大学(北京) | Method for improving water-based drilling cuttings and artificial soil prepared by using water-based drilling cuttings |
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| CN114014731A (en) * | 2021-11-16 | 2022-02-08 | 中国矿业大学(北京) | Method for improving water-based drilling cuttings and artificial soil prepared by using water-based drilling cuttings |
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