CN107226552A - A kind of low temperature rapid preprocessing method for being crosslinked guanidine glue fracturing outlet liquid - Google Patents
A kind of low temperature rapid preprocessing method for being crosslinked guanidine glue fracturing outlet liquid Download PDFInfo
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- CN107226552A CN107226552A CN201710538408.8A CN201710538408A CN107226552A CN 107226552 A CN107226552 A CN 107226552A CN 201710538408 A CN201710538408 A CN 201710538408A CN 107226552 A CN107226552 A CN 107226552A
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- Prior art keywords
- low temperature
- viscosity reduction
- retort
- outlet liquid
- fracturing outlet
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- ZRALSGWEFCBTJO-UHFFFAOYSA-N Guanidine Chemical compound NC(N)=N ZRALSGWEFCBTJO-UHFFFAOYSA-N 0.000 title claims abstract description 94
- 239000007788 liquid Substances 0.000 title claims abstract description 79
- 239000003292 glue Substances 0.000 title claims abstract description 52
- CHJJGSNFBQVOTG-UHFFFAOYSA-N N-methyl-guanidine Natural products CNC(N)=N CHJJGSNFBQVOTG-UHFFFAOYSA-N 0.000 title claims abstract description 47
- SWSQBOPZIKWTGO-UHFFFAOYSA-N dimethylaminoamidine Natural products CN(C)C(N)=N SWSQBOPZIKWTGO-UHFFFAOYSA-N 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000007781 pre-processing Methods 0.000 title claims abstract description 18
- 239000005416 organic matter Substances 0.000 claims abstract description 41
- 238000003756 stirring Methods 0.000 claims abstract description 41
- 238000006243 chemical reaction Methods 0.000 claims abstract description 36
- 238000004132 cross linking Methods 0.000 claims abstract description 27
- 238000005189 flocculation Methods 0.000 claims abstract description 27
- 230000016615 flocculation Effects 0.000 claims abstract description 27
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 238000004062 sedimentation Methods 0.000 claims abstract description 18
- 239000006228 supernatant Substances 0.000 claims abstract description 18
- 239000000126 substance Substances 0.000 claims abstract description 17
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims abstract description 10
- 239000010865 sewage Substances 0.000 claims abstract description 10
- JRKICGRDRMAZLK-UHFFFAOYSA-L peroxydisulfate Chemical compound [O-]S(=O)(=O)OOS([O-])(=O)=O JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 claims abstract description 9
- 239000000203 mixture Substances 0.000 claims abstract description 8
- 150000002978 peroxides Chemical class 0.000 claims abstract description 8
- 239000010802 sludge Substances 0.000 claims description 50
- 241000628997 Flos Species 0.000 claims description 14
- 238000013517 stratification Methods 0.000 claims description 14
- 239000012530 fluid Substances 0.000 claims description 10
- 238000007599 discharging Methods 0.000 claims description 9
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims description 7
- 235000009496 Juglans regia Nutrition 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 229920002401 polyacrylamide Polymers 0.000 claims description 6
- 229920000642 polymer Polymers 0.000 claims description 6
- 235000020234 walnut Nutrition 0.000 claims description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 5
- AHLWZBVXSWOPPL-RGYGYFBISA-N 20-deoxy-20-oxophorbol 12-myristate 13-acetate Chemical compound C([C@]1(O)C(=O)C(C)=C[C@H]1[C@@]1(O)[C@H](C)[C@H]2OC(=O)CCCCCCCCCCCCC)C(C=O)=C[C@H]1[C@H]1[C@]2(OC(C)=O)C1(C)C AHLWZBVXSWOPPL-RGYGYFBISA-N 0.000 claims description 4
- 241001602688 Pama Species 0.000 claims description 4
- 159000000013 aluminium salts Chemical class 0.000 claims description 4
- 229910000329 aluminium sulfate Inorganic materials 0.000 claims description 4
- 229910052615 phyllosilicate Inorganic materials 0.000 claims description 4
- 238000006116 polymerization reaction Methods 0.000 claims description 4
- 239000000470 constituent Substances 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 239000005995 Aluminium silicate Substances 0.000 claims 1
- 240000007049 Juglans regia Species 0.000 claims 1
- PZZYQPZGQPZBDN-UHFFFAOYSA-N aluminium silicate Chemical compound O=[Al]O[Si](=O)O[Al]=O PZZYQPZGQPZBDN-UHFFFAOYSA-N 0.000 claims 1
- 229910000323 aluminium silicate Inorganic materials 0.000 claims 1
- 235000012211 aluminium silicate Nutrition 0.000 claims 1
- 229910052742 iron Inorganic materials 0.000 claims 1
- 239000007787 solid Substances 0.000 abstract description 8
- 238000000926 separation method Methods 0.000 abstract description 7
- 239000003921 oil Substances 0.000 description 17
- 239000000725 suspension Substances 0.000 description 10
- 239000010779 crude oil Substances 0.000 description 8
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 6
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 6
- 241000758789 Juglans Species 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- GJCOSYZMQJWQCA-UHFFFAOYSA-N 9H-xanthene Chemical compound C1=CC=C2CC3=CC=CC=C3OC2=C1 GJCOSYZMQJWQCA-UHFFFAOYSA-N 0.000 description 4
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 239000004411 aluminium Substances 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 229920001285 xanthan gum Polymers 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 3
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000007791 liquid phase Substances 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- PFUVRDFDKPNGAV-UHFFFAOYSA-N sodium peroxide Chemical compound [Na+].[Na+].[O-][O-] PFUVRDFDKPNGAV-UHFFFAOYSA-N 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium peroxydisulfate Substances [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 description 2
- VAZSKTXWXKYQJF-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)OOS([O-])=O VAZSKTXWXKYQJF-UHFFFAOYSA-N 0.000 description 2
- 229910001870 ammonium persulfate Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 235000006408 oxalic acid Nutrition 0.000 description 2
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 description 2
- 235000019394 potassium persulphate Nutrition 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Chemical compound [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 239000004277 Ferrous carbonate Substances 0.000 description 1
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 230000010757 Reduction Activity Effects 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- RAQDACVRFCEPDA-UHFFFAOYSA-L ferrous carbonate Chemical compound [Fe+2].[O-]C([O-])=O RAQDACVRFCEPDA-UHFFFAOYSA-L 0.000 description 1
- 235000019268 ferrous carbonate Nutrition 0.000 description 1
- 229960004652 ferrous carbonate Drugs 0.000 description 1
- 239000011790 ferrous sulphate Substances 0.000 description 1
- 235000003891 ferrous sulphate Nutrition 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 description 1
- 229910000015 iron(II) carbonate Inorganic materials 0.000 description 1
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 1
- 229910000360 iron(III) sulfate Inorganic materials 0.000 description 1
- 239000010808 liquid waste Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001603 reducing effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
- E21B41/005—Waste disposal systems
- E21B41/0057—Disposal of a fluid by injection into a subterranean formation
-
- 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
- C02F2101/32—Hydrocarbons, e.g. oil
-
- 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
- C02F2103/10—Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/10—Solids, e.g. total solids [TS], total suspended solids [TSS] or volatile solids [VS]
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a kind of low temperature rapid preprocessing method of crosslinking guanidine glue fracturing outlet liquid in fracturing outlet liquid treatment for reuse field, comprise the following steps：Low temperature viscosity reduction：First crosslinking guanidine glue fracturing outlet liquid is discharged into viscosity reduction reactor, low temperature thinner is added into viscosity reduction reactor, the mixed liquor stirred in viscosity reduction reactor is well mixed, the reaction of constant temperature viscosity reduction, and low temperature thinner is by persulfate, peroxide and ferrous salt in mass ratio 1:（0.95~1.05）:（10~14）Composition；Organic matter removal：Discharge opeing of returning after viscosity reduction is passed through retort, then adds organic matter removal agent, mixed liquor is stirred；Suspended substance sedimentation：Stood after flocculation aid, stirring mixed liquor are added into retort, the suspended substance sedimentation in mixed liquor to reaction pot bottom, be supernatant liquor at the top of retort；Sewage disposal：Supernatant liquor is discharged into oil-contaminated water of oil field processing system.Thoroughly, process step is simple, strong to ground environment thermal adaptability for fracturing outlet liquid separation of solid and liquid of the present invention, water-oil separating.
Description
Technical field
The invention belongs to fracturing outlet liquid treatment for reuse field, more particularly to a kind of processing for being crosslinked guanidine glue fracturing outlet liquid
Reuse method.
Background technology
Hydraulic fracturing is the important method for improving oil gas well production, and fracturing fluid used in hydraulic fracturing is at present still to be crosslinked guanidine glue
Based on polymer fracturing fluid, there are obvious economic advantages using upper.But as China's untraditional reservoir develops institute's accounting
Example step up, hydraulically fractured wells showed increased, crosslinking guanidine xanthan polymer fracturing fluid usage amount it is also increasing, correspondingly from
Oil-gas reservoir, which is returned, to be discharged to the fracturing outlet liquid on ground and also rolls up.In recent years, the raising required with Environmental Protection in China, fracturing outlet liquid
Treatment for reuse makees injection water and standard discharge progressively turns into development trend.But guanidine xanthan polymer fracturing outlet liquid is crosslinked due to ground
The broken glue viscosity reduction of layer be not thorough, causes its high liquid phase viscosity, content of organics height and water body is stable, cause to be crosslinked guanidine xanthan polymer pressure
Split when returning discharge opeing and being directly entered oil-contaminated water of oil field processing system and handled, the separation of profit hardly possible, the separation of solid-liquid hardly possible and mistake occur
The problem of filter system is hardened serious, has had a strong impact on the normal operation of oil-containing sewage treatment system；If guanidine xanthan polymer will be crosslinked
Fracturing outlet liquid is directly handled so as to standard discharge, then because handling process is numerous and diverse, processing cost is high, causes the Oil Field to be difficult
It is successfully processed, is especially currently in oil price relatively low period, the feasibility of the processing mode is even more to have a greatly reduced quality.
In the prior art, a kind of guanidine glue laminated splits the method for liquid waste processing reuse, its number of patent application：
201310416289.0；The applying date：2013.09.13；This method comprises the following steps, first adds potassium hydroxide and sodium carbonate, stirs
5~10min is mixed, then adds polyacrylamide solution, finally adding oxalic acid in 2h before processing Water circulation adjusts pH6~7.5；Respectively
Inorganic agent adds the throwing amount to be：500~1000mg/L of potassium hydroxide, 200~300mg/L of sodium carbonate, 5~15mg/L of polyacrylamide,
300~500mg/L of oxalic acid.This method can reduce the content of high volence metal ion and solid suspension in waste liquid, but not right
Guanidine glue fracturing waste liquor low temperature viscosity reduction, causes the liquid phase viscosity of waste liquid high, water body stabilization, organic matter, crude oil in the waste liquid after processing
Content is still very high, and solid suspension is not removed thoroughly, and treatment effect is poor.Fracturing fluid carries out broken glue viscosity reduction on stratum
When, formation temperature is about 80 DEG C；And surface temperature changes with the time in the four seasons, the temperature difference is larger, winter temperature up to 5 DEG C with
Under, summer temp is up to more than 35 DEG C, and environment temperature of the fracturing outlet liquid in ground viscosity reduction breaks glue far below pressure break stratum
Temperature, therefore, the broken glue viscosity reduction technology of underground fracture liquid of the prior art are not particularly suited for ground fracturing and return the low temperature of discharge opeing again
Broken glue viscosity reduction.
The content of the invention
It is an object of the invention to provide a kind of low temperature rapid preprocessing method for being crosslinked guanidine glue fracturing outlet liquid, first to pressure break
Return discharge opeing and carry out low temperature viscosity reduction, then reduce and return organic matter and suspension content in discharge opeing so that fracturing outlet liquid can directly enter
Enter oil-contaminated water of oil field processing system, fracturing outlet liquid separation of solid and liquid and water-oil separating are more thorough, process method step is simple,
Processing time is short, processing cost is low, strong to ground environment thermal adaptability.
The object of the present invention is achieved like this：A kind of low temperature rapid preprocessing method for being crosslinked guanidine glue fracturing outlet liquid,
Comprise the following steps：
1）Low temperature viscosity reduction：First crosslinking guanidine glue fracturing outlet liquid is discharged into viscosity reduction reactor, then added into viscosity reduction reactor low
Temperature drop stick, low temperature thinner add quality account for crosslinking guanidine glue fracturing outlet liquid quality 0.05% ~ 0.1%, control reaction temperature
Degree is 120 ~ 180r/min in 3 ~ 7 DEG C, stir speed (S.S.), and first stirring 1 ~ 10min of mixed liquor in viscosity reduction reactor makes its mixing equal
It is even, then constant temperature viscosity reduction 40 ~ 60min of reaction, the low temperature thinner is by persulfate, peroxide and ferrous salt in mass ratio 1:
（0.95~1.05）:（10~14）Composition；
2) organic matter removal：The floss hole on viscosity reduction reactor top is opened, the discharge opeing of returning after viscosity reduction is passed through retort, then to anti-
Answer and organic matter removal agent added in tank, organic matter removal agent adds quality is accounted for after viscosity reduction return discharge opeing quality 0.1% ~ 0.3%,
It is 130 ~ 180r/min in 5 ~ 25 DEG C, stir speed (S.S.) to control the reaction temperature of retort, stirring mixed liquor make its fully react 1 ~
10min, the organic matter returned in discharge opeing is removed；
3）Suspended substance sedimentation：To step 2）Auxiliary agent is added in retort after middle organics removal, until mixed liquor in retort
Flocculation aid concentration be that suspended substance sedimentation in 20 ~ 40min, mixed liquor is stood after 2 ~ 7mg/L, stirring mixed liquor 1 ~ 5min to instead
Answer at the top of pot bottom, retort is supernatant liquor；
4）Sewage disposal：By step 3）Supernatant liquor after middle stratification is discharged into oil field oil-containing dirt by the floss hole of retort
Water treatment system.
Compared with prior art, the beneficial effects of the present invention are：This method first carries out low temperature viscosity reduction to fracturing outlet liquid
Processing, the liquid phase viscosity reduction of the fracturing outlet liquid after viscosity reduction is handled, water body is no longer stablized, using organic matter removal agent and
During flocculation aid, the organic matter and suspension of fracturing outlet liquid can be more thoroughly removed, fracturing outlet liquid is outstanding after pretreatment
Float content≤67mg/L, crude content<10mg/L and COD clearance >=50%, separation of solid and liquid, oil-water separation more preferably, have
Machine thing removal effect is obvious；Persulfate and ferrous salt in low temperature thinner have broken glue viscosity reduction to act on, in ground environment temperature
When the lower progress low temperature viscosity reduction of degree is handled, peroxide can improve persulfate and the low temperature of ferrous salt breaks glue activity, overcome
Sulfate and ferrous salt low temperature break glue activity it is not enough, it is active in 70 ~ 80 DEG C of ability the problem of, pressure break can be returned in 1h
The viscosity of discharge opeing drops to below 2mPa.s, realizes low temperature rapid break viscosity reduction；PH value adaptability of the present invention to fracturing outlet liquid
By force, it is impossible to adjust the pH value of fracturing outlet liquid, process method step is simple, and the whole processing procedure time is short, and processing is rapid, medicament
Abundance, consumption are relatively low, medicament totle drilling cost is low.
As a further improvement on the present invention, constituent persulfate, peroxide and the Asia of the low temperature thinner
The mass ratio of molysite is 1:（0.98~1.02）:（12~13）.The mass ratio of persulfate, peroxide and ferrous salt is 1:
（0.98~1.02）:（12~13）, preferably, peroxide improves the low of persulfate and ferrous salt for the viscosity reducing effect of low temperature thinner
The broken glue viscosity reduction activity of temperature.
As a further improvement on the present invention, the step 1）In return after discharge opeing viscosity reduction, open viscosity reduction reactor bottom
Sludge discharging port, disposal of oily sludge pond is discharged into by oily sludge.The oily sludge of viscosity reduction reactor bottom is discharged at oily sludge
Pond is managed, oily sludge can be further recycled, the crude oil in sludge is purified, crude oil recovery rate is improved, after sludge discharge,
Viscosity reduction reactor inner space is bigger, can handle more fracturing outlet liquids.
As the preferred scheme of the present invention, the organic matter removal agent is inorganic polymeric aluminium salt, inorganic polymeric molysite, polymerization
Phyllosilicate or polymeric aluminium ferrum silicate.
As a further improvement on the present invention, the flocculation aid is the cation polypropylene that molecular weight is 1000 ~ 20,000,000
Acid amides, PAMA or non-ionic polyacrylamide.Flocculation aid can assemble lead salt, molysite in fracturing outlet liquid
Deng metal salt, metal salt is set to unite, beneficial to suspended substance sedimentation.
As a further improvement on the present invention, the step 3）In middle retort after mixed liquor stratification, reaction is opened
The sludge discharging port of pot bottom, disposal of oily sludge pond is discharged into by oily sludge.Add after flocculation aid, a large amount of solid suspensions and original
Oil is deposited to reaction pot bottom, and oily sludge is discharged into disposal of oily sludge pond, can extract crude oil, reacts the sludge of pot bottom
After discharge, suspension and crude oil in fracturing outlet liquid are more prone to be deposited to bottom, further improve separation of solid and liquid, profit point
From effect.
As a further improvement on the present invention, the step 3）It is middle add flocculation aid into retort before, by retort
Stir speed (S.S.) be reduced to 30 ~ 70r/min.The stir speed (S.S.) of retort is excessive, is unfavorable for suspension and crude oil is settled, 30 ~
70r/min stir speed (S.S.) may insure that flocculation aid is well mixed, while avoiding suspension, crude oil from being evenly distributed on pressure break returns row
In liquid, influence suspension, crude oil sedimentation.
As a further improvement on the present invention, the step 4）In supernatant liquor be introduced into particle diameter of filter medium for 0.5 ~
1.0mm walnut shell-type filter is filtered, then filtered fluid is passed through into oil-contaminated water of oil field processing system.The upper strata of retort
After clear liquid filtering, solid impurity is filtered, and suspension content is further reduced, and is convenient for follow-up sewage disposal.
Brief description of the drawings
Fig. 1 is the pretreatment process figure for being crosslinked guanidine glue fracturing outlet liquid of the invention.
Embodiment
Embodiment 1
The crosslinking guanidine glue fracturing outlet liquid that the present embodiment chooses certain well initial stage carries out low temperature Quick Pretreatment, fracturing outlet liquid just
Beginning viscosity 4.4mPa.s.
The low temperature rapid preprocessing method of the present embodiment, comprises the following steps：
1）Low temperature viscosity reduction：First crosslinking guanidine glue fracturing outlet liquid is discharged into viscosity reduction reactor, then added into viscosity reduction reactor low
Temperature drop stick, low temperature thinner add quality account for crosslinking guanidine glue fracturing outlet liquid quality 0.097%, controlling reaction temperature is 5
DEG C, stir speed (S.S.) be 150r/min, the mixed liquor 2min first stirred in viscosity reduction reactor is well mixed it, then constant temperature viscosity reduction is anti-
50min is answered, the low temperature thinner is by potassium peroxydisulfate, sodium peroxide and ferrous sulfate in mass ratio 1:1:14 compositions；Return discharge opeing
After viscosity reduction, the sludge discharging port of viscosity reduction reactor bottom is opened, oily sludge is discharged into disposal of oily sludge pond；
2) organic matter removal：The floss hole on viscosity reduction reactor top is opened, the discharge opeing of returning after viscosity reduction is passed through retort, then to anti-
Answer and organic matter removal agent is added in tank, organic matter removal agent adds quality is accounted for after viscosity reduction return discharge opeing quality 0.12%, control
The reaction temperature of retort is 150r/min in 15 DEG C, stir speed (S.S.), and stirring mixed liquor makes it fully react 3min, returned in discharge opeing
Organic matter be removed；The organic matter removal agent is inorganic polymeric aluminium salt, inorganic polymeric aluminium salt can for aluminium polychloride or
Polyaluminium sulfate；
3）Suspended substance sedimentation：The stir speed (S.S.) of retort is reduced to 50r/min, to step 2）Reaction after middle organics removal
Flocculation aid is added in tank, until the flocculation aid concentration of mixed liquor is standing after 6mg/L, stirring mixed liquor 2min in retort
Suspended substance sedimentation in 30min, mixed liquor is to reaction pot bottom, and retort top is supernatant liquor；The flocculation aid is molecule
Measure the PAMC for 1000 ~ 20,000,000；In retort after mixed liquor stratification, the row of reaction pot bottom is opened
Sludge mouthful, disposal of oily sludge pond is discharged into by oily sludge；
4）Sewage disposal：By step 3）Supernatant liquor after middle stratification is discharged into oil field oil-containing dirt by the floss hole of retort
Water treatment system.
Pretreatment each stage each water quality index result such as table of initial viscosity 4.4mPa.s crosslinking guanidine glue fracturing outlet liquid
1。
Table 1
。
Embodiment 2
The crosslinking guanidine glue fracturing outlet liquid that the present embodiment chooses certain well initial stage carries out low temperature Quick Pretreatment, fracturing outlet liquid just
Beginning viscosity 4.45mPa.s.
The low temperature rapid preprocessing method of the present embodiment, comprises the following steps：
1）Low temperature viscosity reduction：First crosslinking guanidine glue fracturing outlet liquid is discharged into viscosity reduction reactor, then added into viscosity reduction reactor low
Temperature drop stick, low temperature thinner add quality account for crosslinking guanidine glue fracturing outlet liquid quality 0.1%, controlling reaction temperature is 7
DEG C, stir speed (S.S.) be 180r/min, the mixed liquor 10min first stirred in viscosity reduction reactor is well mixed it, then constant temperature viscosity reduction
60min is reacted, the low temperature thinner is by sodium peroxydisulfate, hydrogen peroxide and frerrous chloride in mass ratio 1:1.05:10 compositions；Return
After discharge opeing viscosity reduction, the sludge discharging port of viscosity reduction reactor bottom is opened, oily sludge is discharged into disposal of oily sludge pond；
2) organic matter removal：The floss hole on viscosity reduction reactor top is opened, the discharge opeing of returning after viscosity reduction is passed through retort, then to anti-
Answer and organic matter removal agent is added in tank, organic matter removal agent adds quality is accounted for after viscosity reduction return discharge opeing quality 0.3%, control
The reaction temperature of retort is 180r/min in 25 DEG C, stir speed (S.S.), and stirring mixed liquor makes it fully react 10min, returns discharge opeing
Interior organic matter is removed；The organic matter removal agent is inorganic polymeric molysite, and inorganic polymeric molysite can be poly-ferric chloride
Or bodied ferric sulfate；
3）Suspended substance sedimentation：The stir speed (S.S.) of retort is reduced to 70r/min, to step 2）Reaction after middle organics removal
Flocculation aid is added in tank, until the flocculation aid concentration of mixed liquor is standing after 7mg/L, stirring mixed liquor 5min in retort
Suspended substance sedimentation in 40min, mixed liquor is to reaction pot bottom, and retort top is supernatant liquor；The flocculation aid is molecule
Measure the PAMA for 1000 ~ 20,000,000；In retort after mixed liquor stratification, the row of reaction pot bottom is opened
Sludge mouthful, disposal of oily sludge pond is discharged into by oily sludge；
4）Sewage disposal：By step 3）Supernatant liquor after middle stratification is introduced into particle diameter of filter medium by the floss hole of retort
Filtered for 1.0mm walnut shell-type filter, then filtered fluid is discharged into oil-contaminated water of oil field processing system.
Pretreatment each stage each water quality index result such as table 2 of initial viscosity 4.45mPa.s crosslinking guanidine glue fracturing outlet liquid.
Table 2
。
Embodiment 3
The crosslinking guanidine glue fracturing outlet liquid that the present embodiment chooses certain well initial stage carries out low temperature Quick Pretreatment, fracturing outlet liquid just
Beginning viscosity 4.45mPa.s.
The low temperature rapid preprocessing method of the present embodiment, comprises the following steps：
1）Low temperature viscosity reduction：First crosslinking guanidine glue fracturing outlet liquid is discharged into viscosity reduction reactor, then added into viscosity reduction reactor low
Temperature drop stick, low temperature thinner add quality account for crosslinking guanidine glue fracturing outlet liquid quality 0.05%, controlling reaction temperature is 3
DEG C, stir speed (S.S.) be 120r/min, the mixed liquor 1min first stirred in viscosity reduction reactor is well mixed it, then constant temperature viscosity reduction is anti-
40min is answered, the low temperature thinner is by ammonium persulfate, hydrogen peroxide and ferrous carbonate in mass ratio 1:0.95:13 compositions；The row of returning
After liquid viscosity reduction, the sludge discharging port of viscosity reduction reactor bottom is opened, oily sludge is discharged into disposal of oily sludge pond；
2) organic matter removal：The floss hole on viscosity reduction reactor top is opened, the discharge opeing of returning after viscosity reduction is passed through retort, then to anti-
Answer and organic matter removal agent is added in tank, organic matter removal agent adds quality is accounted for after viscosity reduction return discharge opeing quality 0.1%, control
The reaction temperature of retort is 130r/min in 5 DEG C, stir speed (S.S.), and stirring mixed liquor makes it fully react 1min, returned in discharge opeing
Organic matter be removed；The organic matter removal agent is polymerization phyllosilicate, and polymerization phyllosilicate contains calcium, ferro element；
3）Suspended substance sedimentation：The stir speed (S.S.) of retort is reduced to 30r/min, to step 2）Reaction after middle organics removal
Flocculation aid is added in tank, until the flocculation aid concentration of mixed liquor is standing after 2mg/L, stirring mixed liquor 1min in retort
Suspended substance sedimentation in 20min, mixed liquor is to reaction pot bottom, and retort top is supernatant liquor；The flocculation aid is molecule
Measure the non-ionic polyacrylamide for 1000 ~ 20,000,000；In retort after mixed liquor stratification, the row of reaction pot bottom is opened
Sludge mouthful, disposal of oily sludge pond is discharged into by oily sludge；
4）Sewage disposal：By step 3）Supernatant liquor after middle stratification is introduced into particle diameter of filter medium by the floss hole of retort
Filtered for 0.5mm walnut shell-type filter, then filtered fluid is discharged into oil-contaminated water of oil field processing system.
Pretreatment each stage each water quality index result such as table of initial viscosity 4.45mPa.s crosslinking guanidine glue fracturing outlet liquid
3。
Table 3
。
Embodiment 4
The crosslinking guanidine glue fracturing outlet liquid that the present embodiment chooses certain well initial stage carries out low temperature Quick Pretreatment, fracturing outlet liquid just
Beginning viscosity 4.5mPa.s.
The low temperature rapid preprocessing method of the present embodiment, comprises the following steps：
1）Low temperature viscosity reduction：First crosslinking guanidine glue fracturing outlet liquid is discharged into viscosity reduction reactor, then added into viscosity reduction reactor low
Temperature drop stick, low temperature thinner add quality account for crosslinking guanidine glue fracturing outlet liquid quality 0.07%, controlling reaction temperature is 5
DEG C, stir speed (S.S.) be 150r/min, the mixed liquor 5min first stirred in viscosity reduction reactor is well mixed it, then constant temperature viscosity reduction is anti-
50min is answered, the low temperature thinner is by ammonium persulfate, sodium peroxide and frerrous chloride in mass ratio 1:0.98:12 compositions；The row of returning
After liquid viscosity reduction, the sludge discharging port of viscosity reduction reactor bottom is opened, oily sludge is discharged into disposal of oily sludge pond；
2) organic matter removal：The floss hole on viscosity reduction reactor top is opened, the discharge opeing of returning after viscosity reduction is passed through retort, then to anti-
Answer and organic matter removal agent is added in tank, organic matter removal agent adds quality is accounted for after viscosity reduction return discharge opeing quality 0.2%, control
The reaction temperature of retort is 150r/min in 15 DEG C, stir speed (S.S.), and stirring mixed liquor makes it fully react 5min, returned in discharge opeing
Organic matter be removed；The organic matter removal agent is polymeric aluminium ferrum silicate；
3）Suspended substance sedimentation：The stir speed (S.S.) of retort is reduced to 40r/min, to step 2）Reaction after middle organics removal
Flocculation aid is added in tank, until the flocculation aid concentration of mixed liquor is standing after 4mg/L, stirring mixed liquor 3min in retort
Suspended substance sedimentation in 25min, mixed liquor is to reaction pot bottom, and retort top is supernatant liquor；The flocculation aid is molecule
Measure the non-ionic polyacrylamide for 1000 ~ 20,000,000；In retort after mixed liquor stratification, the row of reaction pot bottom is opened
Sludge mouthful, disposal of oily sludge pond is discharged into by oily sludge；
4）Sewage disposal：By step 3）Supernatant liquor after middle stratification is introduced into particle diameter of filter medium by the floss hole of retort
Filtered for 0.6mm walnut shell-type filter, then filtered fluid is discharged into oil-contaminated water of oil field processing system.
Pretreatment each stage each water quality index result such as table of initial viscosity 4.5mPa.s crosslinking guanidine glue fracturing outlet liquid
4。
Table 4
。
Embodiment 5
The crosslinking guanidine glue fracturing outlet liquid that the present embodiment chooses certain well initial stage carries out low temperature Quick Pretreatment, fracturing outlet liquid just
Beginning viscosity 4.5mPa.s.
The low temperature rapid preprocessing method of the present embodiment, comprises the following steps：
1）Low temperature viscosity reduction：First crosslinking guanidine glue fracturing outlet liquid is discharged into viscosity reduction reactor, then added into viscosity reduction reactor low
Temperature drop stick, low temperature thinner add quality account for crosslinking guanidine glue fracturing outlet liquid quality 0.06%, controlling reaction temperature is 4
DEG C, stir speed (S.S.) be 170r/min, the mixed liquor 8min first stirred in viscosity reduction reactor is well mixed it, then constant temperature viscosity reduction is anti-
50min is answered, the low temperature thinner is by potassium peroxydisulfate, sodium peroxide and frerrous chloride in mass ratio 1:1.02:14 compositions；The row of returning
After liquid viscosity reduction, the sludge discharging port of viscosity reduction reactor bottom is opened, oily sludge is discharged into disposal of oily sludge pond；
2) organic matter removal：The floss hole on viscosity reduction reactor top is opened, the discharge opeing of returning after viscosity reduction is passed through retort, then to anti-
Answer and organic matter removal agent is added in tank, organic matter removal agent adds quality is accounted for after viscosity reduction return discharge opeing quality 0.25%, control
The reaction temperature of retort is 140r/min in 20 DEG C, stir speed (S.S.), and stirring mixed liquor makes it fully react 8min, returned in discharge opeing
Organic matter be removed；The organic matter removal agent is polymeric aluminium ferrum silicate；
3）Suspended substance sedimentation：The stir speed (S.S.) of retort is reduced to 60r/min, to step 2）Reaction after middle organics removal
Flocculation aid is added in tank, until the flocculation aid concentration of mixed liquor is standing after 3mg/L, stirring mixed liquor 4min in retort
Suspended substance sedimentation in 35min, mixed liquor is to reaction pot bottom, and retort top is supernatant liquor；The flocculation aid is molecule
Measure the PAMA for 1000 ~ 20,000,000；In retort after mixed liquor stratification, the row of reaction pot bottom is opened
Sludge mouthful, disposal of oily sludge pond is discharged into by oily sludge；
4）Sewage disposal：By step 3）Supernatant liquor after middle stratification is introduced into particle diameter of filter medium by the floss hole of retort
Filtered for 0.9mm walnut shell-type filter, then filtered fluid is discharged into oil-contaminated water of oil field processing system.
Pretreatment each stage each water quality index result such as table of initial viscosity 4.5mPa.s crosslinking guanidine glue fracturing outlet liquid
5。
Table 5
。
The invention is not limited in above-described embodiment, on the basis of technical scheme disclosed by the invention, the skill of this area
Art personnel are according to disclosed technology contents, it is not necessary to which performing creative labour just can make one to some of which technical characteristic
A little to replace and deform, these are replaced and deformed within the scope of the present invention.
Claims (8)
1. a kind of low temperature rapid preprocessing method for being crosslinked guanidine glue fracturing outlet liquid, it is characterised in that comprise the following steps：
1）Low temperature viscosity reduction：First crosslinking guanidine glue fracturing outlet liquid is discharged into viscosity reduction reactor, then added into viscosity reduction reactor low
Temperature drop stick, low temperature thinner add quality account for crosslinking guanidine glue fracturing outlet liquid quality 0.05% ~ 0.1%, control reaction temperature
Degree is 120 ~ 180r/min in 3 ~ 7 DEG C, stir speed (S.S.), and first stirring 1 ~ 10min of mixed liquor in viscosity reduction reactor makes its mixing equal
It is even, then constant temperature viscosity reduction 40 ~ 60min of reaction, the low temperature thinner is by persulfate, peroxide and ferrous salt in mass ratio 1:
（0.95~1.05）:（10~14）Composition；
2) organic matter removal：The floss hole on viscosity reduction reactor top is opened, the discharge opeing of returning after viscosity reduction is passed through retort, then to anti-
Answer and organic matter removal agent added in tank, organic matter removal agent adds quality is accounted for after viscosity reduction return discharge opeing quality 0.1% ~ 0.3%,
It is 130 ~ 180r/min in 5 ~ 25 DEG C, stir speed (S.S.) to control the reaction temperature of retort, stirring mixed liquor make its fully react 1 ~
10min, the organic matter returned in discharge opeing is removed；
3）Suspended substance sedimentation：To step 2）Flocculation aid is added in retort after middle organics removal, until being mixed in retort
The flocculation aid concentration of liquid is that the suspended substance sedimentation in 20 ~ 40min of standing after 2 ~ 7mg/L, 1 ~ 5min of stirring mixed liquor, mixed liquor is arrived
React at the top of pot bottom, retort is supernatant liquor；
4）Sewage disposal：By step 3）Supernatant liquor after middle stratification is discharged into oil field oil-containing dirt by the floss hole of retort
Water treatment system.
2. a kind of low temperature rapid preprocessing method for being crosslinked guanidine glue fracturing outlet liquid according to claim 1, its feature exists
In the mass ratio of the constituent persulfate, peroxide and ferrous salt of, the low temperature thinner be 1:（0.98~1.02）:
（12~13）.
3. a kind of low temperature rapid preprocessing method for being crosslinked guanidine glue fracturing outlet liquid according to claim 1 or 2, its feature
It is, the step 1）In return after discharge opeing viscosity reduction, open viscosity reduction reactor bottom sludge discharging port, oily sludge is discharged into oil-containing
Sludge treatment pond.
4. a kind of low temperature rapid preprocessing method for being crosslinked guanidine glue fracturing outlet liquid according to claim 1 or 2, its feature
It is, the organic matter removal agent is inorganic polymeric aluminium salt, inorganic polymeric molysite, polymerization phyllosilicate or polymer aluminium silicate
Iron.
5. a kind of low temperature rapid preprocessing method for being crosslinked guanidine glue fracturing outlet liquid according to claim 1 or 2, its feature
Be, the flocculation aid be the PAMC that molecular weight is 1000 ~ 20,000,000, PAMA or it is non-from
Sub- polyacrylamide.
6. a kind of low temperature rapid preprocessing method for being crosslinked guanidine glue fracturing outlet liquid according to claim 1 or 2, its feature
It is, the step 3）In middle retort after mixed liquor stratification, the sludge discharging port of reaction pot bottom is opened, by oily sludge
It is discharged into disposal of oily sludge pond.
7. a kind of low temperature rapid preprocessing method for being crosslinked guanidine glue fracturing outlet liquid according to claim 1 or 2, its feature
It is, the step 3）It is middle add flocculation aid into retort before, the stir speed (S.S.) of retort is reduced to 30 ~ 70r/min.
8. a kind of low temperature rapid preprocessing method for being crosslinked guanidine glue fracturing outlet liquid according to claim 1 or 2, its feature
It is, the step 4）In supernatant liquor be introduced into particle diameter of filter medium be 0.5 ~ 1.0mm walnut shell-type filter filtered,
Filtered fluid is passed through oil-contaminated water of oil field processing system again.
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| CN112457839A (en) * | 2020-12-09 | 2021-03-09 | 西南石油大学 | Multiphase hybrid guanidine gum fracturing fluid and preparation method thereof |
| CN112479468A (en) * | 2020-11-18 | 2021-03-12 | 三桶油环保科技(宜兴)有限公司 | Two-stage magnetic method rapid separation treatment method for fracturing flow-back fluid |
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