CN108083590A - Composite curing agent and three sulphur system drilling discarded slurry of gas field cure optimization method - Google Patents
Composite curing agent and three sulphur system drilling discarded slurry of gas field cure optimization method Download PDFInfo
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- CN108083590A CN108083590A CN201711394331.8A CN201711394331A CN108083590A CN 108083590 A CN108083590 A CN 108083590A CN 201711394331 A CN201711394331 A CN 201711394331A CN 108083590 A CN108083590 A CN 108083590A
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- curing agent
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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
- C02F11/008—Sludge treatment by fixation or solidification
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
- C02F2103/36—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the manufacture of organic compounds
- C02F2103/365—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the manufacture of organic compounds from petrochemical industry (e.g. refineries)
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Sludge (AREA)
Abstract
The present invention discloses a kind of composite curing agent and three sulphur system drilling discarded slurry of gas field cures optimization method, and optimization method mainly includes：Waste drilling mud comprising three sulphur systems is sufficiently stirred, the chlorination iron powder of 5 8g/L is added in take off surely with broken glue, add flyash, 1 2% quick lime and 8 12% that mass fraction is 10 15% and the composite curing agent that portland cement forms, last die-filling drying, completes slurry curing.The composite curing agent composition that the present invention chooses is cheap, simple for process, can substantially fix the heavy metal in the drilling mud of Tarim Basin gas field, while the exceeded situation of firming body leachate is greatly improved.
Description
Technical field
The present invention relates to drilling waste mud processing technology field in gas-field exploitation more particularly to a kind of composite curing agents and gas
Three sulphur system drilling discarded slurry of field cures optimization method.
Background technology
Natural gas is a kind of important energy substance, and critically important effect is played in our production and living.Natural
In gas recovery process, the waste drilling mud of a large amount of doping drilling fluids, mud and landwaste can be generated.Exist in waste drilling mud
There is the chromium ion (Cr contained in substantial amounts of pollutant, such as cleaning solution, flushing fluid6+), lead ion (Pb2+), cadmium ion (Cd2+)
Etc. heavy metal ion；Organic agent and its decomposition product；Petroleum substance；High COD, suspended matter etc..These include
If the effects that mud of evil substance not by timely processing, is percolated by rainfall enters in environment, it will causes far-reaching environment
Harm.Therefore, effective disposal of drilling waste mud realizes sustainable development, creates friendly environment society for environmental protection
It is of great significance.
Processing comparatively ideal to drilling waste mud is generally curing process at present, i.e., by adding curing agent into waste mud
Stable irreversible physical-chemical reaction is brought it about, indissoluble product is generated with the heavy metal ion chemical combination in mud, it is and organic
Object forms complex compound, reaches the curing of harmful substance, to stack storage and to handle in next step.Only add the biography of single curing agent
System curing can not meet Practical Project demand, and used is mostly compound curing agent.Meanwhile for the discarded of different compositions
Drilling mud is, it is necessary to which different curing agent species and proportioning can be only achieved optimal solidification effect.
The content of the invention
A kind of three sulphur system drilling discarded slurries that the present invention is generated for Tarim Basin somewhere gas field, it is proposed that composite curing
Agent and three sulphur system drilling discarded slurry of gas field cure optimization method, and this method can be substantially fixed in the drilling mud of Tarim Basin gas field
Heavy metal, while the exceeded situation of firming body leachate is greatly improved.
First technical solution of the invention be：A kind of composite curing of three sulphur system drilling discarded slurry curing of gas field
Agent is mainly made of flyash, the quick lime of 1-2% and the portland cement of 8-12% that mass fraction is 10-15%.
Second technical solution of the invention be：Three sulphur system drilling discarded slurry curing of gas field, using above-mentioned compound
Curing agent, this method comprise the following steps：
1) pre-process：Three sulphur system sulfonation well drilling waste muds are sufficiently stirred, solid-liquid component is made to be sufficiently mixed
It is even, subsequent reactions is enable fully to carry out；
2) glue destablizing is broken：The gel breaker chlorination iron powder of 5-8g/L is added in water-base mud, glue is obtained brokenly and takes off surely
Pretreated sample；
3) curing process：It is taken off to broken glue and composite curing agent progress curing process is added in steady pretreated sample：It is described
Composite curing agent is mainly flyash, the quick lime of 1-2% and the portland cement group of 8-12% of 10-15% by mass fraction
Into；
Composite curing agent order of addition is flyash, calcium oxide, cement, is stirred using blender, until stirring is fully equal
Until even；
4) it is die-filling：By treated, mud is die-filling, completes to cure, mud cake is generated, in case subsequent processing.
The step 1) is specially：It is the phenolic resin of 1-2%, 1-3% sulfonation that mass fraction is added in into drilling mud
Pitch is sufficiently stirred so that solid-liquid component is sufficiently mixed uniformly.
The step 2) is specially：The chlorination iron powder of 5-8g/L is added in, it is stirring while adding, 3-5min is quickly stirred, slowly
Speed stirring 5-8min, is uniformly mixed sample, stands 20-40min.
The die-filling processing specific steps of step 4)：
(1), the multiple batches of progress of sample time-division is filled, is refilled after vibrating 2-4min in an oscillator, it is ensured that make water-base mud complete
Entire die trial is filled on ground, and compacting leaves no gaps；
(2), 20-25 DEG C is kept, under conditions of relative humidity is 60-70%, dry solidification is placed at drying
The mechanism of action：
The species and proportioning of gel breaker and curing agent of the present invention are key links.First use FeCl3Powder-processed waste mud
Make its broken glue, then make curing agent with flyash, lime and cement.Contain SiO in flyash2, Al2O3, Fe2O3Wait volcanic ash material
Material, in the presence of water, alkaline matter is excited in by drilling mud, it may occur that hydration and hardening acts on, and then promotes drilling well
The hardening quality of mud system and mud component, and flyash is a kind of industrial residue, can realize the recycling of resource；Water
Mud is cheap and this is as inorganic material, and main composition is CaO, SiO2, Fe2O3, Al2O3Substances are waited, when cement runs into mud
In water, hydration and hardening reaction can occur under room temperature, then plasticity jelly condenses hardening gradually makes cement solidification shape
Into cured block, the harmful substance in drilling mud is wrapped in the inside, and constantly promotes hardness.After so waiting slurry curings, Gu
Change in body harmful substance not easy to leak and stability is good, this operation processing expense is low and simple for process.
The invention has the advantages that：
(1) prioritization scheme of the invention is to be directed to the sulfonation waste drilling mud curing of gas field output and propose, at present
Relevant programme research is less, therefore present invention tool has significant practical applications and is worth.
(2) prioritization scheme of the invention is with reference to existing curing technology, by engineering experience and contrast test point
Analysis, obtained from combined use cost angularly considers.For gas field drilling well generate three sulphur system rejected well drilling liquids, really
Gel breaker, the species of composite curing agent and amount of application are determined, and have formulated one and complete put into practice operation system.
(3) present invention has greatly reinforced the fixation to heavy metal in waste mud, while multinomial important pollutant is referred to
Mark plays significant control action.
Description of the drawings
Fig. 1 is the technological process of three sulphur system drilling discarded slurry curing of gas field.
Specific embodiment
Below by specific embodiment, the present invention is further illustrated.The embodiment of the present invention is to make this field
Technical staff more fully understand the present invention, not to the present invention make any limitation.
Embodiment 1：Research object of the present invention is to come from the waste drilling mud of Tarim Basin somewhere gas field drilling well, mainly by rock
Bits, bentonite, weighting material calcium carbonate and the compositions such as calcium carbonate superfine powder, soda ash and caustic potash, potassium acrylate, tannin extract.Solid phase
Grain granularity is generally between 0.01-0.03 μm, and appearance is in thick liquid or semifluid shape, and particle is superfine, moisture content is high and is not easy
A kind of alkaline mixed solution of dehydration.
First in drilling mud add in mass fraction be 1.5% phenolic resin, 2% sulfonated gilsonite, and with stir
Device stir, allow solid-liquid component be sufficiently mixed uniformly until, with simulate gas field scene occur three sulphur system drilling discarded slurries.
Glue is carried out brokenly again takes off steady pretreatment.Iron chloride (the FeCl of 6g/L is added in water-base mud3) powder, side edged stirs
It mixes, quickly stirs 3min, mix slowly 5min, be uniformly mixed sample, stand 30min, by the clay particle of unstability from drilling well
It is separated in waste liquid, achievees the purpose that brokenly that glue is dehydrated after taking off steady and separation of solid and liquid.
Then curing agent is added with solidified slip.Adding mass fraction successively into the above-mentioned broken pretreated sample of glue is
12% flyash, 1.5% calcium oxide, 10% cement, and stirred with blender, until stirring is full and uniform.
Finally, by treated, mud is die-filling, need to divide multiple batches of progress when filling sample, in an oscillator after vibration 2min again
Dress, it is ensured that water-base mud is allowed to be completely filled with entire die trial, and compacting leaves no gaps.Kept for 20 DEG C, relative humidity is 70%
Under the conditions of, dry solidification is placed at drying.
After curing process, pollutant load detection is carried out to gained mud cake and leachate pollutant load detects.Gained knot
Fruit such as Tables 1 and 2.
Pollutant load before and after 1 waste drilling mud curing process of table
Compared to former mud, after curing, full nitrogen, full phosphorus, full potassium and petroleum-type, pH value content are declined, and a huge sum of money
The pollutants such as category can reach three-level Soil standard substantially.
To the mud cake that parches according to HJ 557-2010《Solid waste Leaching leaching method horizontal vibration method》It is soaked
Go out liquid experiment, as a result such as table 2.
Table 2 cures front and rear leachate pollutant load
It can be seen that most of indexs leach all be effectively controlled after hardening, sodium, calcium, magnesium, iron, zinc, bacterium are particularly
Falling number reduces substantially, and solidification effect is fine.And mercury, the copper that increased, essentially from curing agent flyash and cement, but it contains
Amount is in integrated wastewater discharge secondary standard.
Embodiment 2：Research object of the present invention is to come from the waste drilling mud of Tarim Basin somewhere gas field drilling well, mainly by rock
Bits, bentonite, weighting material calcium carbonate and the compositions such as calcium carbonate superfine powder, soda ash and caustic potash, potassium acrylate, tannin extract.Solid phase
Grain granularity is generally between 0.01-0.03 μm, and appearance is in thick liquid or semifluid shape, and particle is superfine, moisture content is high and is not easy
A kind of alkaline mixed solution of dehydration.
The phenolic resin, 1% sulfonated gilsonite that mass fraction is 1% are added in first in drilling mud, and uses blender
Stirring, allow solid-liquid component be sufficiently mixed uniformly until, with simulate gas field scene occur three sulphur system drilling discarded slurries.
Glue is carried out brokenly again takes off steady pretreatment.Iron chloride (the FeCl of 5g/L is added in water-base mud3) powder, side edged stirs
It mixes, quickly stirs 4min, mix slowly 6min, be uniformly mixed sample, stand 20min, by the clay particle of unstability from drilling well
It is separated in waste liquid, achievees the purpose that brokenly that glue is dehydrated after taking off steady and separation of solid and liquid.
Then curing agent is added with solidified slip.Adding mass fraction successively into the above-mentioned broken pretreated sample of glue is
10% flyash, 1% calcium oxide, 8% cement, and stirred with blender, until stirring is full and uniform.
Finally, by treated, mud is die-filling, need to divide multiple batches of progress when filling sample, in an oscillator after vibration 3min again
Dress, it is ensured that water-base mud is allowed to be completely filled with entire die trial, and compacting leaves no gaps.Kept for 23 DEG C, relative humidity is 60%
Under the conditions of, dry solidification is placed at drying.
Embodiment 3：Research object of the present invention is to come from the waste drilling mud of Tarim Basin somewhere gas field drilling well, mainly by rock
Bits, bentonite, weighting material calcium carbonate and the compositions such as calcium carbonate superfine powder, soda ash and caustic potash, potassium acrylate, tannin extract.Solid phase
Grain granularity is generally between 0.01-0.03 μm, and appearance is in thick liquid or semifluid shape, and particle is superfine, moisture content is high and is not easy
A kind of alkaline mixed solution of dehydration.
The phenolic resin, 3% sulfonated gilsonite that mass fraction is 2% are added in first in drilling mud, and uses blender
Stirring, allow solid-liquid component be sufficiently mixed uniformly until, with simulate gas field scene occur three sulphur system drilling discarded slurries.
Glue is carried out brokenly again takes off steady pretreatment.Iron chloride (the FeCl of 8g/L is added in water-base mud3) powder, side edged stirs
It mixes, quickly stirs 5min, mix slowly 8min, be uniformly mixed sample, stand 40min, by the clay particle of unstability from drilling well
It is separated in waste liquid, achievees the purpose that brokenly that glue is dehydrated after taking off steady and separation of solid and liquid.
Then curing agent is added with solidified slip.Adding mass fraction successively into the above-mentioned broken pretreated sample of glue is
15% flyash, 2% calcium oxide, 12% cement, and stirred with blender, until stirring is full and uniform.
Finally, by treated, mud is die-filling, need to divide multiple batches of progress when filling sample, in an oscillator after vibration 4min again
Dress, it is ensured that water-base mud is allowed to be completely filled with entire die trial, and compacting leaves no gaps.Kept for 25 DEG C, relative humidity is 65%
Under the conditions of, dry solidification is placed at drying.
Above-mentioned curing the result shows that, the curing is non-to the solidification of heavy metal in three sulphur system waste drilling muds
Chang Mingxian, multinomial key index are discharged in integrated wastewater within secondary standard, effectively reduce the environmental risk of solidfied material.And
Program materials inexpensively easily obtain, and technological process is simple and effective.
It should be appreciated that embodiment and example discussed herein simply to illustrate that, to those skilled in the art
For, it can be improved or converted, and all these modifications and variations should all belong to the protection of appended claims of the present invention
Scope.
Claims (5)
1. a kind of composite curing agent of three sulphur system drilling discarded slurry curing of gas field, which is characterized in that mainly by quality point
Number forms for the portland cement of the flyash of 10-15%, the quick lime of 1-2% and 8-12%.
2. three sulphur system drilling discarded slurry curing of gas field, which is characterized in that the composite curing described in usage right requirement 1
Agent, this method comprise the following steps：
1) pre-process：Three sulphur system sulfonation well drilling waste muds are sufficiently stirred, solid-liquid component is made to be sufficiently mixed uniformly, is made
Subsequent reactions can be carried out fully；
2) glue destablizing is broken：The gel breaker chlorination iron powder of 5-8g/L is added in water-base mud, glue is obtained brokenly and takes off steady pre- place
Sample after reason；
3) curing process：It is taken off to broken glue and composite curing agent progress curing process is added in steady pretreated sample：It is described compound
Curing agent is mainly made of flyash, the quick lime of 1-2% and the portland cement of 8-12% that mass fraction is 10-15%；
Composite curing agent order of addition is flyash, calcium oxide, cement, is stirred using blender, is up to stirring is full and uniform
Only；
4) it is die-filling：By treated, mud is die-filling, completes to cure, mud cake is generated, in case subsequent processing.
3. curing according to claim 2, which is characterized in that the step 1) is specially：Add into drilling mud
Enter phenolic resin, the 1-3% sulfonated gilsonites that mass fraction is 1-2%, be sufficiently stirred so that solid-liquid component is sufficiently mixed uniformly.
4. curing according to claim 2, which is characterized in that the step 2) is specially：Add in the chlorine of 5-8g/L
Change iron powder, it is stirring while adding, 3-5min is quickly stirred, mixes slowly 5-8min, is uniformly mixed sample, stands 20-
40min。
5. curing according to claim 2, which is characterized in that the die-filling processing specific steps of step 4)：
(1), the multiple batches of progress of sample time-division is filled, is refilled after vibrating 2-4min in an oscillator, it is ensured that water-base mud is allowed fully to fill
Full entire die trial, and compacting leaves no gaps；
(2), 20-25 DEG C is kept, under conditions of relative humidity is 60-70%, dry solidification is placed at drying.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109626768A (en) * | 2018-12-25 | 2019-04-16 | 肇庆市珈旺环境技术研究院 | Oil-gas field drilling mud chip curing agent and application thereof |
| CN110372126A (en) * | 2019-07-30 | 2019-10-25 | 南阳油田腾龙实业有限公司 | A kind of method for innocent treatment of rejected well drilling liquid containing alkali |
| CN110395878A (en) * | 2019-06-18 | 2019-11-01 | 路德环境科技股份有限公司 | A kind of municipal sludge deep dewatering, solidifying method |
| CN111303890A (en) * | 2020-01-21 | 2020-06-19 | 新疆盛洁环境技术有限责任公司 | Curing agent for solid waste treatment and application thereof |
| CN112282679A (en) * | 2020-11-16 | 2021-01-29 | 陕西延长石油（集团）有限责任公司 | Method and device for generating water-based drilling waste residue curing treatment formula |
| CN112876037A (en) * | 2020-12-29 | 2021-06-01 | 青海煤炭地质一0五勘探队 | Special composite waste slurry curing agent for geological drilling and preparation and use methods thereof |
| CN115611569A (en) * | 2021-07-13 | 2023-01-17 | 中国石油化工股份有限公司 | Roadbed pavement material modified based on waste drilling mud, preparation method and application |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109626768A (en) * | 2018-12-25 | 2019-04-16 | 肇庆市珈旺环境技术研究院 | Oil-gas field drilling mud chip curing agent and application thereof |
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| CN112282679A (en) * | 2020-11-16 | 2021-01-29 | 陕西延长石油（集团）有限责任公司 | Method and device for generating water-based drilling waste residue curing treatment formula |
| CN112876037A (en) * | 2020-12-29 | 2021-06-01 | 青海煤炭地质一0五勘探队 | Special composite waste slurry curing agent for geological drilling and preparation and use methods thereof |
| CN115611569A (en) * | 2021-07-13 | 2023-01-17 | 中国石油化工股份有限公司 | Roadbed pavement material modified based on waste drilling mud, preparation method and application |
| CN115611569B (en) * | 2021-07-13 | 2024-01-02 | 中国石油化工股份有限公司 | Roadbed and pavement material modified based on drilling waste mud, preparation method and application |
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