CN102492414A - Synthesis of thickening agent for methanol-based fracturing fluid - Google Patents
Synthesis of thickening agent for methanol-based fracturing fluid Download PDFInfo
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- CN102492414A CN102492414A CN2011103976784A CN201110397678A CN102492414A CN 102492414 A CN102492414 A CN 102492414A CN 2011103976784 A CN2011103976784 A CN 2011103976784A CN 201110397678 A CN201110397678 A CN 201110397678A CN 102492414 A CN102492414 A CN 102492414A
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- fracturing fluid
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- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 title claims abstract description 60
- 239000012530 fluid Substances 0.000 title claims abstract description 25
- 230000015572 biosynthetic process Effects 0.000 title abstract description 13
- 239000002562 thickening agent Substances 0.000 title abstract description 4
- 238000003786 synthesis reaction Methods 0.000 title 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 18
- 230000035699 permeability Effects 0.000 claims abstract 2
- 239000000178 monomer Substances 0.000 claims description 21
- 239000003795 chemical substances by application Substances 0.000 claims description 16
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 15
- 239000000243 solution Substances 0.000 claims description 15
- 229910052757 nitrogen Inorganic materials 0.000 claims description 10
- 150000001875 compounds Chemical class 0.000 claims description 7
- 238000006116 polymerization reaction Methods 0.000 claims description 7
- MPNXSZJPSVBLHP-UHFFFAOYSA-N 2-chloro-n-phenylpyridine-3-carboxamide Chemical compound ClC1=NC=CC=C1C(=O)NC1=CC=CC=C1 MPNXSZJPSVBLHP-UHFFFAOYSA-N 0.000 claims description 6
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims description 6
- 150000001408 amides Chemical class 0.000 claims description 6
- 239000007864 aqueous solution Substances 0.000 claims description 6
- NZQQFMVULBBDSP-FPLPWBNLSA-N bis(4-methylpentan-2-yl) (z)-but-2-enedioate Chemical compound CC(C)CC(C)OC(=O)\C=C/C(=O)OC(C)CC(C)C NZQQFMVULBBDSP-FPLPWBNLSA-N 0.000 claims description 6
- 238000007664 blowing Methods 0.000 claims description 6
- 239000003054 catalyst Substances 0.000 claims description 5
- 229910052708 sodium Inorganic materials 0.000 claims description 5
- 239000011734 sodium Substances 0.000 claims description 5
- UWNADWZGEHDQAB-UHFFFAOYSA-N 2,5-dimethylhexane Chemical group CC(C)CCC(C)C UWNADWZGEHDQAB-UHFFFAOYSA-N 0.000 claims description 4
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 4
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 4
- OUUQCZGPVNCOIJ-UHFFFAOYSA-M Superoxide Chemical compound [O-][O] OUUQCZGPVNCOIJ-UHFFFAOYSA-M 0.000 claims description 4
- JRKICGRDRMAZLK-UHFFFAOYSA-L persulfate group Chemical group S(=O)(=O)([O-])OOS(=O)(=O)[O-] JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 claims description 4
- 230000002829 reductive effect Effects 0.000 claims description 4
- 239000004160 Ammonium persulphate Substances 0.000 claims description 3
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 3
- 235000019395 ammonium persulphate Nutrition 0.000 claims description 3
- 238000007334 copolymerization reaction Methods 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- LCPVQAHEFVXVKT-UHFFFAOYSA-N 2-(2,4-difluorophenoxy)pyridin-3-amine Chemical compound NC1=CC=CN=C1OC1=CC=C(F)C=C1F LCPVQAHEFVXVKT-UHFFFAOYSA-N 0.000 claims description 2
- 239000004159 Potassium persulphate Substances 0.000 claims description 2
- 150000001409 amidines Chemical class 0.000 claims description 2
- 150000001412 amines Chemical class 0.000 claims description 2
- LSXWFXONGKSEMY-UHFFFAOYSA-N di-tert-butyl peroxide Chemical compound CC(C)(C)OOC(C)(C)C LSXWFXONGKSEMY-UHFFFAOYSA-N 0.000 claims description 2
- GRWZHXKQBITJKP-UHFFFAOYSA-N dithionous acid Chemical compound OS(=O)S(O)=O GRWZHXKQBITJKP-UHFFFAOYSA-N 0.000 claims description 2
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 2
- 235000019394 potassium persulphate Nutrition 0.000 claims description 2
- VVWRJUBEIPHGQF-UHFFFAOYSA-N propan-2-yl n-propan-2-yloxycarbonyliminocarbamate Chemical compound CC(C)OC(=O)N=NC(=O)OC(C)C VVWRJUBEIPHGQF-UHFFFAOYSA-N 0.000 claims description 2
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Substances [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 claims description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims 2
- RUOIPBUNBYUZCK-UHFFFAOYSA-N 2-methylpropane-1-sulfonic acid;sodium Chemical compound [Na].CC(C)CS(O)(=O)=O RUOIPBUNBYUZCK-UHFFFAOYSA-N 0.000 claims 1
- UHOVQNZJYSORNB-UHFFFAOYSA-N benzene Substances C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims 1
- 125000002485 formyl group Chemical group [H]C(*)=O 0.000 claims 1
- 239000007789 gas Substances 0.000 abstract description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract description 4
- 230000006872 improvement Effects 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 239000002612 dispersion medium Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 239000011148 porous material Substances 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 238000005755 formation reaction Methods 0.000 abstract 9
- 230000000638 stimulation Effects 0.000 abstract 2
- 230000002349 favourable effect Effects 0.000 abstract 1
- 230000008014 freezing Effects 0.000 abstract 1
- 238000007710 freezing Methods 0.000 abstract 1
- -1 methanol Chemical compound 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 239000002343 natural gas well Substances 0.000 abstract 1
- 239000003129 oil well Substances 0.000 abstract 1
- 239000011435 rock Substances 0.000 abstract 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- 125000002091 cationic group Chemical group 0.000 description 3
- 238000004090 dissolution Methods 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 3
- 229920002401 polyacrylamide Polymers 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- DSCFFEYYQKSRSV-UHFFFAOYSA-N 1L-O1-methyl-muco-inositol Natural products COC1C(O)C(O)C(O)C(O)C1O DSCFFEYYQKSRSV-UHFFFAOYSA-N 0.000 description 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 206010010214 Compression fracture Diseases 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000006392 deoxygenation reaction Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000010528 free radical solution polymerization reaction Methods 0.000 description 1
- 238000010559 graft polymerization reaction Methods 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 1
- 235000015320 potassium carbonate Nutrition 0.000 description 1
- VYGBQXDNOUHIBZ-UHFFFAOYSA-L sodium formaldehyde sulphoxylate Chemical compound [Na+].[Na+].O=C.[O-]S[O-] VYGBQXDNOUHIBZ-UHFFFAOYSA-L 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
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- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
At present, more than 90 percent of fracturing fluids used in the fracturing improvement of oil and gas fields are water-based fracturing fluids with water as dispersion medium, and as a result, for gas reservoirs with low formation pressure, low permeability and strong water-locking characteristic, particularly highly water-sensitive gas reservoirs, the difficulty of fluid flowback can be easily caused because the formation pressure coefficient is greatly smaller than the pressure coefficient of water in a shaft; and formation pores can be easily blocked due to the water-locking effect of formations to cause the failure of fracturing improvement. Because low-molecular weight alcohol, particularly methanol, has a lot of excellent physical and chemical properties, the low-molecular weight alcohol can be used in the improvement of low-pressure, water-sensitive formations for stimulation, and compared with conventional water-based fracturing fluids, methanol-based fracturing fluid has the characteristics of low surface tension, good water-solubility, low freezing point, high steam, high compatibility with formation rocks and the like. The invention relates to a thickening agent for methanol-based fracturing fluid, which is used in the fracturing stimulation process of natural gas wells or oil wells; because methanol and water can be formed into any proportions of mixtures, the methanol-based fracturing fluid can absorb the water constrained by water-locking formations to the maximum limit after entering the formations, and moreover, as the fracturing fluid is drained out of the ground, the water locking of the formations is released, which is favorable for the flowback of the fluid.
Description
Technical field
The present invention relates to the additive of the methanol-based fracturing working fluid that a kind of low pressure, water-sensitive strata raising the output house of correction uses, be specifically related to a kind of compound method of methanol-based fracturing fluid gelatinizer.
Background technology
At present; To have more than 90% be to be the aqueous fracturing fluid of dispersion medium with water to employed fracturing liquid in the fracturing reform of gas field; Low for reservoir pressure, rate of permeation is low, have the gas-bearing formation of strong water block performance; Particularly high water-sensitive gas-bearing formation because reservoir pressure coefficient is significantly less than the pressure factor of water in pit shaft, causes liquid to return row's difficulty easily; Because the water block effect on stratum is prone to cause the obstruction of formation pore, fracturing reform was lost efficacy.Exploitation and invent a kind of employed fracturing liquid of fracturing yield increasing technology that is used for gasser has very big meaning to the raising the output of the present gas well of China.Non-water-based fracturing is necessary, comprises alcohol-base fracturing fluid and oil base fracturing fluid specifically.
The viscosifying agent that this The project alcohol-base fracturing fluid is used.This system comprises the research of viscosifying agent, linking agent, gel breaker.Be made up of in the alcohol-base fracturing fluid methyl alcohol, water, polymer thickening agent, linking agent, gel breaker, viscosifying agent is a major portion wherein.The alcohol radical pressure break is generally cationic polyacrylamide and non-ionic polyacrylamide with viscosifying agent, existing problem be that anti-shear ability is poor, viscosity retention ratio is very low; Heat resistance is bad, generally is no more than 85 ℃; Dispersing and dissolving is slowly generally about 3 hours in the alcohol.
The mode that we adopt graft polymerization and aqueous solution copolymerization to combine is with the multiple skeleton structure of introducing in cationic polyacrylamide functional group, in order to improve heatproof and shear-stable performance.The monomer of introducing has 2-acrylic amide-2-methyl propane sulfonic acid sodium, N, N-DMAA and vinyl cyanide.The heat-resisting property of this alcohol radical viscosifying agent can reach 120 ℃ at present, and the viscosity retention ratio under 1 hour condition of 170s-1 shearing is greater than 80%; The dissolution time of polymkeric substance was controlled within 60 minutes.
Summary of the invention
The purpose of this invention is to provide a kind of fracturing reform and have the compound method of the used viscosifying agent of methanol-based fracturing liquid of provide protection low pressure, hypotonic, strong water lock hydrocarbon zone.
For achieving the above object, the technical scheme that the present invention adopts is:
Adopt the aqueous solution copolymerization method; Cationic monomer methylacryoyloxyethyl trimethyl ammonium chloride to be soluble in alcohols is a primary structure; Introduce multiple skeleton structure functional group simultaneously; 2-acrylic amide-2-methyl propane sulfonic acid sodium, N, N-DMAA and vinyl cyanide have improved the heatproof and the anti-shear performance of methanol-based fracturing fluid gelatinizer;
A kind of compound method of producing above-mentioned methanol-based fracturing fluid gelatinizer, it comprises the steps:
(1) selected acrylic amide (AM), vinyl cyanide (AN), methylacryoyloxyethyl trimethyl ammonium chloride (DMC), 2-acrylic amide-2-methyl propane sulfonic acid sodium (AMPS) and N, five kinds of monomers of N-DMAA (DMAM) carry out proportioning according to a certain percentage;
(2) said ratio is good monomer is put into the preparation that zero(ppm) water carries out solution;
(3) the pH value and the temperature of adjustment solution make the pH value 6.5 ± 0.5, and said temperature is 15 ± 1 ℃;
(4) produce radical with aqueous solution catalyst method and make above-mentioned monomer generation polymerization.
Said aqueous solution catalyst method just refers in the building-up process of methanol-based fracturing fluid gelatinizer agent; Monomer solution nitrogen blowing to preparing is protected 20 minutes; In solution, add catalyzer then, bring out 10-15 minute with the generation radical, thereby make monomer generation polymerization.
In with the process of aqueous solution polymerization, need solution nitrogen blowing 20 minutes to remove the dissolved oxygen in anhydrating, is added catalyzer then under protection of nitrogen gas; Stop nitrogen blowing and polymeric kettle is airtight; Brought out 10-15 minute, and observed whether temperature rise was arranged, 2 ℃ temperature rise is arranged in inductive phase; Be regarded as causing successfully, otherwise need add the catalyzer re-initiation again.Under the insulation air tight condition, finish, be incubated 3 hours until heating up.
Initiation starting temperature of the present invention is controlled within the 10-20 ℃ of scope.Preferred starting temperature is 15 ± 1 ℃.The pH value is controlled between the 6.0-7.5.PH alkalescence mediator agent mainly contains sodium hydroxide, salt of wormwood, ammoniacal liquor.The pH acid regulator mainly contains phosphoric acid, sulfuric acid, hydrochloric acid, acetate.Preferred pH value is controlled at 6.5 ± 0.5.
For the not special restriction of said catalyzer.The oxygenant of polymerizing catalyst is persulphate or superoxide, for example ammonium persulphate, Potassium Persulphate, Sodium Persulfate, hydrogen peroxide, Lucidol or tert-butyl peroxide.Can use oxygenant to form redox system with reductive agent among the present invention, said reductive agent can be sulphite, hydrosulphite, protosalt, organic amine etc.
Azo cpd also is one of preferred catalyzer of the present invention, and the typical azo cpd that is suitable for is Diisopropyl azodicarboxylate (AZDN), ABVN (V65), azo diisobutyl amidine hydrochloride (V50) etc.
Can use two or more above-mentioned catalyzer simultaneously, the amount of catalyzer is generally monomeric 0.001-3% weight.
The compound method of methanol-based fracturing fluid gelatinizer of the present invention is with respect to prior art; It has done bigger improvement from prescription; Thereby it is fast to have dissolution rate; The advantage that the heatproof anti-shear performance is good: (1) dissolution time in methyl alcohol and water mixed liquid can be controlled within 60 minutes, and alcohol insoluble solids is less than 0.2%; (2) heat-resisting property can reach 120 ℃, and the general polymerization thing can only be anti-to 85 ℃; (3) viscosity retention ratio under 1 hour condition of 170s shearing is greater than 80%.
Embodiment
To do detailed explanation to methanol-based compression fracture thickening agent building-up process of the present invention according to concrete embodiment below.
Embodiment 1
The weight percent of each monomer and water: AM: DMC: AN: AMPS: DMAM: H
2O=5: 25: 3: 3: 3: 61.
The preparation of solution: in the 2000ml beaker, add zero(ppm) water 610g, add AM monomer 50g, add DMC monomer 250g; AN monomer 30g adds AMPS monomer 30g, adds DMAM monomer 30g; Stirring and dissolving 30 minutes slowly adds neutralizing agent (sodium hydroxide) to pH6.5 under agitation condition.Continue stirred solution slaking 30 minutes.
The adjustment of solution: regulate pH value to 6.5 ± 0.5 once more, 15 ± 1 ℃ of attemperation.
The polymerization of solution: nitrogen blowing deoxygenation 20 minutes adds catalyst V 650.5g/L, V500.05g/L successively under nitrogen protection; Ammonium persulphate 0.03g/L, sodium formaldehyde sulphoxylate 0.03g/L stops nitrogen blowing and polymeric kettle is airtight; Brought out 15-20 minute, and observed whether temperature rise was arranged, 2 ℃ temperature rise is arranged in inductive phase; Be regarded as causing successfully, otherwise need add the catalyzer re-initiation again.Under the insulation air tight condition, finish, be incubated 3 hours until heating up.
The aftertreatment of product: the colloid that polymerization is good is carried out granulation, and oven dry is ground into 30 orders.
Claims (6)
1. compound method that is applied to the methanol-based fracturing fluid gelatinizer of low permeability reservoirs reservoir; It is characterized in that: said viscosifying agent is by acrylic amide (AM), methylacryoyloxyethyl trimethyl ammonium chloride (DMC), vinyl cyanide (AN), N, and N-DMAA (DMAM), 2-acrylic amide-five kinds of monomers of 2-methyl propane sulfonic acid sodium (AMPS) synthesize through the method for aqueous solution copolymerization.
2. the compound method of methanol-based fracturing fluid gelatinizer according to claim 1 is characterized in that: each monomer accounts for the weight proportion of reaction solution and is in polymerization process:
(a) acrylic amide of 5 to 10 weight % (AM);
(b) the methylacryoyloxyethyl trimethyl ammonium chloride (DMC) of 20 to 30 weight %;
(c) vinyl cyanide of 1 to 5 weight % (AN);
(d) N of 1 to 5 weight %, N-DMAA (DMAM);
(e) the 2-acrylic amide of 1 to 5 weight %-2-methyl propane sulfonic acid sodium (AMPS);
(f) surplus is a water.
3. the compound method of methanol-based fracturing fluid gelatinizer according to claim 1 is characterized in that: it comprises the steps:
(1) selected acrylic amide (AM), vinyl cyanide (AN), methylacryoyloxyethyl trimethyl ammonium chloride (DMC), 2-acrylic amide-2-methyl propane sulfonic acid sodium (AMPS) and N, five kinds of monomers of N-DMAA (DMAM) carry out proportioning according to a certain percentage;
(2) said ratio is good monomer is put into the preparation that zero(ppm) water carries out solution;
(3) the pH value and the temperature of adjustment solution make the pH value 6.5 ± 0.5, and said temperature is 15 ± 1 ℃;
(4) monomer solution for preparing is added in the reaction vessel, protect 20 minutes, in solution, add catalyzer then, bring out 15-20 minute with the generation radical, thereby make monomer generation polymerization to the monomer solution nitrogen blowing for preparing.
4. method as claimed in claim 3 is characterized in that: said catalyzer is persulphate or superoxide; Perhaps form redox system with reductive agent for persulphate or superoxide; It perhaps is azo cpd; Said catalyzer also can be made up of two kinds in the above-mentioned catalyst type or more kinds of catalyzer.
5. method as claimed in claim 3 is characterized in that: said persulphate is one or more in ammonium persulphate, Potassium Persulphate, the Sodium Persulfate; Said superoxide is one or more in hydrogen peroxide, peroxo-benzene, formyl and the tert-butyl peroxide; Said reductive agent is one or more in sulphite, hydrosulphite, protosalt, the organic amine; Said azo cpd is one or more in Diisopropyl azodicarboxylate, ABVN, the azo diisobutyl amidine hydrochloride.
6. method as claimed in claim 3 is characterized in that: the amount of catalyzer is the 0.001-3% of monomer weight.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105566559A (en) * | 2015-12-29 | 2016-05-11 | 北京希涛技术开发有限公司 | Temperature-control sticky-becoming acid liquid thickening agent and synthetic method thereof |
| CN109536152A (en) * | 2018-10-18 | 2019-03-29 | 中国石油天然气股份有限公司 | gel fracturing fluid system |
| CN109971454A (en) * | 2019-05-10 | 2019-07-05 | 四川洁能锐思石油技术有限公司 | A kind of instant crosslinked fracturing fluid system of modified ethylene glycol and its preparation method and application |
| CN109988550A (en) * | 2019-05-10 | 2019-07-09 | 四川洁能锐思石油技术有限公司 | A kind of instant crosslinked fracturing fluid system of methanol-based and its preparation method and application |
| CN112391154A (en) * | 2020-11-24 | 2021-02-23 | 中国石油大学(华东) | Alcohol-containing fracturing fluid and preparation method and application thereof |
| CN112442352A (en) * | 2020-11-27 | 2021-03-05 | 北京海悦天地科技有限公司 | Anhydrous modified glycerol-based cross-linking fracturing fluid system and preparation method and application thereof |
| CN113150766A (en) * | 2021-04-29 | 2021-07-23 | 陕西科技大学 | Waterproof lock easily-soluble alcohol-based fracturing fluid and preparation method thereof |
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