CN207418547U - Well drilling waste mud is with brill processing unit - Google Patents
Well drilling waste mud is with brill processing unit Download PDFInfo
- Publication number
- CN207418547U CN207418547U CN201721446744.1U CN201721446744U CN207418547U CN 207418547 U CN207418547 U CN 207418547U CN 201721446744 U CN201721446744 U CN 201721446744U CN 207418547 U CN207418547 U CN 207418547U
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- mud
- sewage
- pipeline
- tank
- slurry
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Classifications
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- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse
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- Treatment Of Sludge (AREA)
Abstract
The utility model provides a kind of well drilling waste mud with brill processing unit, desander, desilter and centrifuge discharge discarded slurry are sent into surge tank via screw conveyor, vibrating screen drilling cuttings is pumped into surge tank by mud after flushing by slurry transportation, discarded slurry carries out brokenly glue after entering mud agitator tank dosing, discarded slurry constantly squeezes into mud under the action of slurry transportation pump into filter press, gradually step up the indoor pressure of worry, moisture in mud is constantly squeezed out, so as to fulfill the purpose of separation of solid and liquid, the mud cake unloaded is delivered to fermentation vat by chain-linked conveyer, carry out microbial fermentation, organic pollution in solid formation is become organic fertilizer, for afforesting.It is connected between filter press outlet of sewer and sewage oxidizing treater by being equipped with the pipeline of sewage pump, carries out sewage oxidation processing, then handled using high-efficiency water purifying treatment device evolution, realize the recycling of water resource.
Description
Technical field
The utility model belongs to drilling technology field, more specifically, is related to well drilling waste mud with brill processing unit.
Background technology
With the increase of oil exploitation difficulty, the additive types and dosage in drilling fluid are also increasing, and drilling well is discarded
The toxicity of object is many compared to adding in the past, this forms ecological environment very big threat.Secondly, substantial amounts of oil field in recent years
Exploitation turns to coastal waters by inland, turns to the more fragile place of the environment such as wetland, this brings environmental protection the challenge of bigger,
Higher requirement also is proposed to the processing of discarded object and waste water simultaneously.
In terms of environmental protection, national governments have all formulated stringent waste discharge standard, and perform supervision and also get over
Come it is stringenter, indivedual ecologically fragile area host country governments even because on oil field operation contamination control it is not up to standard and to oily public
Department outputs the penalty note of billions of dollars.
The main component of modern drilling discarded object is more complicated, including environmentally harmful petroleum-type, all kinds of polymer, conjunction
Into substances such as organic matter, barite, landwaste and asphalt modifications, have COD value high, mineralizer is high, colourity is high, and suspended matter is high,
Containing there are many toxic pollutant factor, the ecological environment on periphery will be seriously destroyed without dealing carefully with to discharge.
The drilling fluid used at present consists of the following components：(1) liquid phase：The water added in during mud is prepared, is made for lubrication
Oil with addition etc.；(2) solid phase：Bentonite, heavy weight additive etc.；(3) drilling fluid additive：Improve property of drilling fluid and add in
Inorganic salts, organic matter, synthetic polymer, surfactant etc..Rejected well drilling liquid is a complicated heterogeneous system, except preparing
Outside various substances added by drilling fluid, mixed underground water, drilling cuttings, clay, crude oil etc. when further including drilling stratum.
At present, these rejected well drilling liquids are mainly deposited in the mud pit that well site has been dug in advance, are evaporated by natural conditions
It is dry, then filled with topsoil.The time of typical well liquid evaporation drying is 1-2 months, the particularly preferred drilling well of stability
Liquid then needs 3-6 months.The naturally dry and hard process of waste drilling mud is slow, and dry and hard object is met easily to be formed drilling well after water-soaked and give up mud once again
Sample object is starched, can the soil physical factors of emission point and neighbouring area be generated with long-term harmful effect, salt therein, alkali and Salt layer bore
Bits not only cause soil hardening, but also unfavorable to the growth of plant, and salt content height can cause plant water suction difficult, soluble-salt
Migration can also pollute underground water；Various heavy metal ion are stranded in soil, in the growth and soil that can influence plant
The breeding of microorganism, and be easily absorbed by plants and then influence the health of people and animals；Some fungicide and high-molecular compound biology drop
The low-molecular-weight organic compound generated is solved, murder by poisoning can be generated to fish, shrimp and birds；Influence of the oils to soil and animals and plants is also very
Greatly.
The content of the invention
The technical problem to be solved by the present invention is to provide a kind of well drilling waste mud with processing unit is bored, without dredging
Stock tank reduces land used cost, realizes that waste material recycles.
In order to solve the above-mentioned technical problem, the technical solution of the utility model is：
A kind of well drilling waste mud is useless including being used to receiving desander, desilter and centrifuge discharge with boring processing unit
The first collecting bin of mud and the conveyer of connection vibrating screen and drilling cuttings flusher are abandoned, the first collecting bin is with collecting waste sludge
It is connected by screw conveyor between the surge tank of slurry, is pumped between drilling cuttings flusher and surge tank by being equipped with slurry transportation
Pipeline connects, and surge tank is connected with mud agitator tank by being equipped with the pipeline that slurry transportation pumps, chemicals dosing plant and mud agitator tank
It is connected by pipeline, the pipeline pumped between mud agitator tank and filter press by being equipped with slurry transportation connects, and filter press mud cake goes out
It mouthful is connected between the interior fermentation vat for having a degradable organic pollutant microorganism species by chain-linked conveyer, filter press outlet of sewer
It is connected between sewage oxidizing treater by being equipped with the pipeline of sewage pump, the outlet of sewer and water of sewage oxidizing treater
It is connected between purifying processing device by being equipped with the pipeline of water pump.
Above-mentioned well drilling waste mud includes tank body, is arranged at tank lumen centers with processing unit, drilling cuttings flusher is bored
Conical sieve tube, the agitating device for being arranged at conical sieve tube center and by conical sieve tube bottom discharge drilling cuttings be delivered to outside tank body
Conveyer.
Above-mentioned well drilling waste mud includes tank body, is arranged in tank lumen centers with processing unit, mud agitator tank is bored
Heart cylinder and the agitating device for being arranged at central tube center, the medicine outlet of chemicals dosing plant are arranged at tank bottom and are distributed in outside central tube
Side, central tube cylinder bottom and tank bottom distance 5cm, mud inlet are arranged at tank deck edge, and slurry outlet is arranged at central tube top.
Above-mentioned well drilling waste mud includes what is sequentially arranged along sewage flow direction with processing unit, sewage oxidizing treater is bored
Retort, electric flocculation equipment, filter and electrocatalytic oxidation equipment, by being equipped with sewage between retort and electric flocculation equipment
The pipeline connection of pump, is connected, filter and electrocatalytic oxidation between electric flocculation equipment and filter by being equipped with the pipeline of sewage pump
It is connected between change equipment by being equipped with the pipeline of water pump, chemicals dosing plant is connected with retort by pipeline, and retort includes tank body
With several aeration heads for being arranged at tank base, aeration head is connected by pipeline with Roots blower.
Above-mentioned well drilling waste mud includes what is sequentially arranged along sewage flow direction with processing unit, sewage oxidizing treater is bored
Retort and filter are connected between retort and filter by being equipped with the pipeline of sewage pump, and chemicals dosing plant leads to retort
Piping connects, chemicals dosing plant include adjusting the pharmacy jar of sewage PH value, for add in reducing agent pharmacy jar, for adding
Enter the pharmacy jar of oxidant, for adding in the pharmacy jar of deep oxidation medicament and the corresponding compound pump of each pharmacy jar and medicament
Flowmeter.
Above-mentioned well drilling waste mud includes the essence sequentially arranged along water (flow) direction with processing unit, high-efficiency water purifying treatment device is bored
Filter device, ultrafiltration apparatus and reverse osmosis unit.
Desander, desilter and centrifuge discharge discarded slurry are sent into surge tank, vibrating screen drilling cuttings via screw conveyor
Surge tank is pumped by slurry transportation by mud after flushing, discarded slurry carries out brokenly glue after entering mud agitator tank dosing,
Discarded slurry constantly squeezes into mud under the action of slurry transportation pump into filter press, gradually steps up the indoor pressure of worry,
Moisture in mud is constantly squeezed out, so as to fulfill the purpose of separation of solid and liquid, the mud cake unloaded is delivered to by chain-linked conveyer
Fermentation vat carries out microbial fermentation, the organic pollution in solid formation is become organic fertilizer, for afforesting.Filter press sewage goes out
Mouthful and sewage oxidizing treater between by be equipped with sewage pump pipeline connect, carry out sewage oxidation processing, then using
High-efficiency water purifying treatment device evolution is handled, and realizes the recycling of water resource.
Description of the drawings
Below in conjunction with the accompanying drawings to the further details of explanation of the utility model：
Fig. 1 is the structure diagram of the utility model.
Fig. 2 is the structure diagram of drilling cuttings flusher.
Fig. 3 is the structure diagram of mud agitator tank.
In figure：1 vibrating screen, 2 desanders, 3 desilters, 4 centrifuges, 5 drilling cuttings flushers, 6 first collecting bins, 7 spirals
Conveyer, 8 surge tanks, 9 chemicals dosing plants, 10 mud agitator tanks, 11 filter presses, 12 chemicals dosing plants, 13 aeration heads, 14 electric flocculations are set
It is standby, 15 retort, 16 Roots blowers, 17 filters, 18 electrocatalytic oxidation equipment, 19 fine filtering devices, 20 ultrafiltration apparatus, 21 chains
Formula conveyer, 22 fermentation vats, 23 reverse osmosis units, 24 tank bodies, 25 conical sieve tubes, 26 agitating devices, 27 conveyers, 28 tank bodies,
29 agitating devices, 30 medicine outlets, 31 central tubes, 32 retort, 33 chemicals dosing plants, 34 filters.
Specific embodiment
As shown in Figure 1, a kind of well drilling waste mud with bore processing unit, including being used to receive desander 2,3 and of desilter
Centrifuge 4 discharges the first collecting bin 6 of discarded slurry and the conveyer of connection vibrating screen 1 and drilling cuttings flusher 5, the conveying
Machine can be screw conveyor or chain-linked conveyer, be connected between the first collecting bin and surge tank 8 by screw conveyor 7,
The discarded slurry of collection is sent into surge tank by screw conveyor 7, and drilling cuttings flusher is rinsed drilling cuttings, drilling cuttings flusher
The pipeline pumped between 5 and surge tank 8 by being equipped with slurry transportation connects, and slurry transportation pump will wash mud out and silt is defeated
It is sent in surge tank, surge tank is connected with mud agitator tank 10 by being equipped with the pipeline that slurry transportation pumps, chemicals dosing plant 9 and mud
Agitator tank is connected by pipeline, and discarded slurry in surge tank is sent into mud agitator tank, adds in chemical agent, and mud is carried out
Broken glue.The pipeline pumped between mud agitator tank 10 and filter press 11 by being equipped with slurry transportation connects, and discarded slurry is defeated in mud
It send and mud is constantly squeezed into filter press under the action of pumping, gradually step up the indoor pressure of worry, the moisture in mud not
It is disconnected to squeeze out, so as to fulfill the purpose of separation of solid and liquid.Membrane pressure filter or plate and frame filter press may be employed in filter press.Filter press
It is connected, unloaded by chain-linked conveyer 21 between cake outlet and the interior fermentation vat 22 for having a degradable organic pollutant microorganism species
Mud cake fermentation vat is delivered to by chain-linked conveyer, carry out microbial fermentation, the organic pollution in solid formation become having
Machine fertilizer, for afforesting.It is connected between filter press outlet of sewer and sewage oxidizing treater by being equipped with the pipeline of sewage pump, it is dirty
Water pump handles sewage feeding sewage oxidizing treater, the outlet of sewer and purifying water process of sewage oxidizing treater
It is connected between device by being equipped with the pipeline of water pump, water pump feeds the water into high-efficiency water purifying treatment device and handled, and carries out depth
Reason realizes the recycling of water resource.
As shown in Fig. 2, the drilling cuttings flusher of the utility model includes tank body 24, the conical screen for being arranged at tank lumen centers
Cylinder 25, be arranged at conical sieve tube center agitating device 26 and by conical sieve tube bottom discharge drilling cuttings be delivered to it is defeated outside tank body
Send machine 27.Screw conveyor may be employed in conveyer 27.Drilling cuttings rinses in drilling cuttings flusher, and slurry transportation pump will be washed out
For the slurry transportation come into surge tank, the slurry outlet of drilling cuttings flusher is located at tank base.
As shown in figure 3, during mud agitator tank includes tank body 28, is arranged at the central tube 31 of tank lumen centers and is arranged at
The agitating device 29 at heart cylinder center, the medicine outlet 30 of chemicals dosing plant 9 are arranged at tank bottom and are distributed on the outside of central tube, central tube cylinder
Bottom and tank bottom distance 5cm, central tube cylinder bottom form fluid passageway with tank bottom, and mud inlet is arranged at tank deck edge, slurry outlet
It is arranged at central tube top.Mud enters first from tank deck edge, then comes downwards to tank bottom, is mixed with chemical agent, in
Heart cylinder bottom enters in central tube, is finally ejected from central tube, and this structure extends the flowing time of mud, itself mixing
And mixed with chemical agent fully, it is good that glue effect is broken to mud.
As shown in Figure 1, sewage oxidizing treater includes retort 15, the electric flocculation equipment sequentially arranged along sewage flow direction
14th, filter 17 and electrocatalytic oxidation equipment 18 are connected between retort and electric flocculation equipment by being equipped with the pipeline of sewage pump
It connects, is connected between electric flocculation equipment and filter by being equipped with the pipeline of sewage pump, between filter and electrocatalytic oxidation equipment
It is connected by the pipeline for being equipped with water pump, chemicals dosing plant 12 is connected with retort by pipeline, and retort includes tank body and is arranged at
Several aeration heads 13 of tank base, aeration head are connected by pipeline with Roots blower 16.Filter is sand filter or suitable
The sand filter and carbon filter of secondary connection.Sewage oxidizing treater handles sewage, reduce the biochemical oxygen consumption of sewage with
And colourity.
As indicated by a broken line in fig. 1, another sewage oxidizing treater includes the retort 32 sequentially arranged along sewage flow direction
With filter 34, connected between retort and filter by being equipped with the pipeline of sewage pump, chemicals dosing plant 33 passes through with retort
Pipeline connects, chemicals dosing plant include adjusting the pharmacy jar of pH value of sewage water, for add in reducing agent pharmacy jar, for adding in
The pharmacy jar of oxidant, for adding in the pharmacy jar of deep oxidation medicament and the corresponding compound pump of each pharmacy jar and medicament stream
Gauge.Sewage enters in retort, it is necessary first to adjust pH value to 4 or so, then add in reducing agent drawing as oxidation reaction
Agent to be sent out, is stirring evenly and then adding into oxidant, and stop stirring, reaction is waited to carry out, when reaction, has a large amount of foams to generate, and with
Heat release, lather collapse, then adds in a certain proportion of deep oxidation medicament after completion of the reaction, stirs 20Min, adjusts pH value to 7
Left and right.Filter is sand filter or sand filter connected in sequence and carbon filter.In sewage oxidizing treater removal sewage
Colourity and reduction chemical oxygen consumption (COC).
As shown in Figure 1, high-efficiency water purifying treatment device includes fine filtering device 19, the ultrafiltration apparatus 20 sequentially arranged along water (flow) direction
And reverse osmosis unit 23.It is handled by high-efficiency water purifying treatment device evolution, realizes the recycling of water resource.
The utility model need not dredge stock tank again, cause secondary pollution after solving mud pit occupation of land and be difficult to second ploughing
Organic pollution in solid formation is become organic fertilizer by problem, is used for afforesting, while is realized the utilization of water resource.
Claims (6)
1. a kind of well drilling waste mud is with brill processing unit, it is characterised in that：Including being used to receive desander, desilter and centrifugation
The first collecting bin and the conveyer of connection vibrating screen and drilling cuttings flusher of machine discharge discarded slurry, the first collecting bin is with receiving
It is connected between the surge tank of collection discarded slurry by screw conveyor, by being equipped with mud between drilling cuttings flusher and surge tank
The pipeline connection of delivery pump, surge tank are connected with mud agitator tank by being equipped with the pipeline that slurry transportation pumps, chemicals dosing plant and mud
Slurry agitator tank is connected by pipeline, and the pipeline pumped between mud agitator tank and filter press by being equipped with slurry transportation connects, press filtration
It is connected between machine cake outlet and the interior fermentation vat for having a degradable organic pollutant microorganism species by chain-linked conveyer, filter press
It is connected between outlet of sewer and sewage oxidizing treater by being equipped with the pipeline of sewage pump, the sewage of sewage oxidizing treater
It is connected between outlet and high-efficiency water purifying treatment device by being equipped with the pipeline of water pump.
2. well drilling waste mud according to claim 1 is with brill processing unit, it is characterised in that：Drilling cuttings flusher includes
Tank body, the conical sieve tube for being arranged at tank lumen centers, the agitating device for being arranged at conical sieve tube center and by conical sieve tube bottom
Portion's discharge drilling cuttings is delivered to the conveyer outside tank body.
3. well drilling waste mud according to claim 1 is with brill processing unit, it is characterised in that：Mud agitator tank includes tank
Body, the central tube for being arranged at tank lumen centers and the agitating device for being arranged at central tube center, the medicine outlet of chemicals dosing plant are set
It is placed in tank bottom and is distributed on the outside of central tube, central tube cylinder bottom and tank bottom distance 5cm, mud inlet are arranged at tank deck edge, mud
Slurry outlet is arranged at central tube top.
4. well drilling waste mud according to claim 1 is with brill processing unit, it is characterised in that：Sewage oxidizing treater
Including retort, electric flocculation equipment, filter and the electrocatalytic oxidation equipment sequentially arranged along sewage flow direction, retort and electricity
It is connected between flocculation apparatus by being equipped with the pipeline of sewage pump, by being equipped with the pipe of sewage pump between electric flocculation equipment and filter
Road connects, and is connected between filter and electrocatalytic oxidation equipment by being equipped with the pipeline of water pump, chemicals dosing plant passes through with retort
Pipeline connects, and retort includes tank body and is arranged at several aeration heads of tank base, and aeration head passes through pipeline and Roots blower
Machine connects.
5. well drilling waste mud according to claim 1 is with brill processing unit, it is characterised in that：Sewage oxidizing treater
Including along the sewage retort sequentially arranged of flow direction and filter, by being equipped with the pipeline of sewage pump between retort and filter
Connection, chemicals dosing plant is connected with retort by pipeline, chemicals dosing plant including for adjust pH value of sewage water pharmacy jar, for adding
Enter reducing agent pharmacy jar, for add in oxidant pharmacy jar, for adding in the pharmacy jar of deep oxidation medicament and each
The corresponding compound pump of pharmacy jar and medicament flowmeter.
6. well drilling waste mud according to claim 1 is with brill processing unit, it is characterised in that：High-efficiency water purifying treatment device bag
Include fine filtering device, ultrafiltration apparatus and the reverse osmosis unit sequentially arranged along water (flow) direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721446744.1U CN207418547U (en) | 2017-11-02 | 2017-11-02 | Well drilling waste mud is with brill processing unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721446744.1U CN207418547U (en) | 2017-11-02 | 2017-11-02 | Well drilling waste mud is with brill processing unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207418547U true CN207418547U (en) | 2018-05-29 |
Family
ID=62306825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721446744.1U Expired - Fee Related CN207418547U (en) | 2017-11-02 | 2017-11-02 | Well drilling waste mud is with brill processing unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207418547U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108756791A (en) * | 2018-07-27 | 2018-11-06 | 成都智楷分离科技有限公司 | A kind of discarded oil-base mud recycling and processing equipment of drilling well |
| CN110226490A (en) * | 2019-06-19 | 2019-09-13 | 成都国盛环境保护技术有限公司 | Utilize the method that plant nutrient soil is prepared after drilling sludge harmless treatment |
| CN110318697A (en) * | 2019-05-20 | 2019-10-11 | 国家电网有限公司 | A kind of packaged type pile foundation drilling mud processing unit |
| CN110498580A (en) * | 2019-08-12 | 2019-11-26 | 中国建筑第八工程局有限公司 | Construction waste mud disposal system and its processing method |
| CN110563296A (en) * | 2019-10-11 | 2019-12-13 | 王川宽 | mud separation method and system for realizing circulation by using same |
| CN110656902A (en) * | 2019-10-21 | 2020-01-07 | 延安能源化工（集团）有限责任公司 | Drilling fluid waste treatment process and drilling fluid waste treatment device |
| CN113651473A (en) * | 2021-07-30 | 2021-11-16 | 鄂尔多斯市昊鑫绿科环境工程有限公司 | Water-based drilling waste mud classification harmless treatment method |
-
2017
- 2017-11-02 CN CN201721446744.1U patent/CN207418547U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108756791A (en) * | 2018-07-27 | 2018-11-06 | 成都智楷分离科技有限公司 | A kind of discarded oil-base mud recycling and processing equipment of drilling well |
| CN108756791B (en) * | 2018-07-27 | 2024-01-23 | 成都智楷分离科技有限公司 | Recycling treatment device for waste oil-based mud of drilling well |
| CN110318697A (en) * | 2019-05-20 | 2019-10-11 | 国家电网有限公司 | A kind of packaged type pile foundation drilling mud processing unit |
| CN110226490A (en) * | 2019-06-19 | 2019-09-13 | 成都国盛环境保护技术有限公司 | Utilize the method that plant nutrient soil is prepared after drilling sludge harmless treatment |
| CN110498580A (en) * | 2019-08-12 | 2019-11-26 | 中国建筑第八工程局有限公司 | Construction waste mud disposal system and its processing method |
| CN110563296A (en) * | 2019-10-11 | 2019-12-13 | 王川宽 | mud separation method and system for realizing circulation by using same |
| CN110656902A (en) * | 2019-10-21 | 2020-01-07 | 延安能源化工（集团）有限责任公司 | Drilling fluid waste treatment process and drilling fluid waste treatment device |
| CN113651473A (en) * | 2021-07-30 | 2021-11-16 | 鄂尔多斯市昊鑫绿科环境工程有限公司 | Water-based drilling waste mud classification harmless treatment method |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180529 Termination date: 20181102 |
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| CF01 | Termination of patent right due to non-payment of annual fee |