CN106632839B - A kind of organic-silicon-modified amphipathic polymer type heavy crude thinner of easy breaking emulsion and dewatering and preparation method thereof - Google Patents
A kind of organic-silicon-modified amphipathic polymer type heavy crude thinner of easy breaking emulsion and dewatering and preparation method thereof Download PDFInfo
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- 229920000642 polymer Polymers 0.000 title claims abstract description 35
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 239000000839 emulsion Substances 0.000 title abstract description 14
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims abstract description 28
- 150000003242 quaternary ammonium salts Chemical class 0.000 claims abstract description 24
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims abstract description 20
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000002904 solvent Substances 0.000 claims abstract description 16
- 238000006243 chemical reaction Methods 0.000 claims abstract description 15
- 239000003999 initiator Substances 0.000 claims abstract description 14
- 238000005406 washing Methods 0.000 claims abstract description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000001816 cooling Methods 0.000 claims abstract description 8
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 5
- 238000000967 suction filtration Methods 0.000 claims abstract description 4
- 238000001035 drying Methods 0.000 claims abstract description 3
- 239000003921 oil Substances 0.000 claims description 81
- 239000003638 chemical reducing agent Substances 0.000 claims description 76
- -1 alkyl acrylamide tertiary amine Chemical class 0.000 claims description 23
- 229910052710 silicon Inorganic materials 0.000 claims description 16
- 239000010703 silicon Substances 0.000 claims description 16
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 14
- 238000003756 stirring Methods 0.000 claims description 13
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 12
- 238000006297 dehydration reaction Methods 0.000 claims description 12
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 9
- 230000018044 dehydration Effects 0.000 claims description 9
- 239000000295 fuel oil Substances 0.000 claims description 9
- 239000008267 milk Substances 0.000 claims description 9
- 210000004080 milk Anatomy 0.000 claims description 9
- 235000013336 milk Nutrition 0.000 claims description 9
- 229920001296 polysiloxane Polymers 0.000 claims description 9
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 8
- 150000001343 alkyl silanes Chemical class 0.000 claims description 8
- 239000012295 chemical reaction liquid Substances 0.000 claims description 8
- 150000003512 tertiary amines Chemical class 0.000 claims description 8
- 241001391944 Commicarpus scandens Species 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims description 7
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 6
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 6
- 125000005250 alkyl acrylate group Chemical group 0.000 claims description 5
- 239000011259 mixed solution Substances 0.000 claims description 5
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 claims description 4
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000002791 soaking Methods 0.000 claims description 4
- 239000000243 solution Substances 0.000 claims description 4
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 claims description 3
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 claims description 3
- 125000006273 (C1-C3) alkyl group Chemical group 0.000 claims description 2
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 claims description 2
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 239000012966 redox initiator Substances 0.000 claims description 2
- 238000010025 steaming Methods 0.000 claims description 2
- 239000012934 organic peroxide initiator Substances 0.000 claims 1
- 150000002978 peroxides Chemical class 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 6
- 230000001603 reducing effect Effects 0.000 abstract description 6
- 150000001875 compounds Chemical class 0.000 abstract description 2
- 239000000654 additive Substances 0.000 abstract 1
- 230000000996 additive effect Effects 0.000 abstract 1
- 238000007654 immersion Methods 0.000 abstract 1
- 230000001681 protective effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 11
- 239000000178 monomer Substances 0.000 description 11
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical group N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 description 10
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 10
- 238000010521 absorption reaction Methods 0.000 description 8
- 239000004094 surface-active agent Substances 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 7
- 238000004945 emulsification Methods 0.000 description 7
- 238000003786 synthesis reaction Methods 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- 239000007864 aqueous solution Substances 0.000 description 6
- 230000033558 biomineral tissue development Effects 0.000 description 5
- 229910018540 Si C Inorganic materials 0.000 description 4
- 230000032683 aging Effects 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 4
- 238000002329 infrared spectrum Methods 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- 229910010271 silicon carbide Inorganic materials 0.000 description 4
- 239000012752 auxiliary agent Substances 0.000 description 3
- 238000007334 copolymerization reaction Methods 0.000 description 3
- 230000001804 emulsifying effect Effects 0.000 description 3
- 230000015784 hyperosmotic salinity response Effects 0.000 description 3
- 238000005160 1H NMR spectroscopy Methods 0.000 description 2
- 238000005481 NMR spectroscopy Methods 0.000 description 2
- 229910002808 Si–O–Si Inorganic materials 0.000 description 2
- HEDRZPFGACZZDS-MICDWDOJSA-N Trichloro(2H)methane Chemical compound [2H]C(Cl)(Cl)Cl HEDRZPFGACZZDS-MICDWDOJSA-N 0.000 description 2
- 125000003368 amide group Chemical group 0.000 description 2
- 150000001408 amides Chemical class 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 239000002280 amphoteric surfactant Substances 0.000 description 2
- 239000003945 anionic surfactant Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000010779 crude oil Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 125000000864 peroxy group Chemical group O(O*)* 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 238000002390 rotary evaporation Methods 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 238000001291 vacuum drying Methods 0.000 description 2
- 238000003828 vacuum filtration Methods 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- JKNCOURZONDCGV-UHFFFAOYSA-N 2-(dimethylamino)ethyl 2-methylprop-2-enoate Chemical compound CN(C)CCOC(=O)C(C)=C JKNCOURZONDCGV-UHFFFAOYSA-N 0.000 description 1
- KSCAZPYHLGGNPZ-UHFFFAOYSA-N 3-chloropropyl(triethoxy)silane Chemical compound CCO[Si](OCC)(OCC)CCCCl KSCAZPYHLGGNPZ-UHFFFAOYSA-N 0.000 description 1
- MMWCHSBIWFYBBL-UHFFFAOYSA-N 3-chloropropyl-tris(trimethylsilyloxy)silane Chemical compound C[Si](C)(C)O[Si](O[Si](C)(C)C)(O[Si](C)(C)C)CCCCl MMWCHSBIWFYBBL-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 1
- GDFCSMCGLZFNFY-UHFFFAOYSA-N Dimethylaminopropyl Methacrylamide Chemical compound CN(C)CCCNC(=O)C(C)=C GDFCSMCGLZFNFY-UHFFFAOYSA-N 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000004205 dimethyl polysiloxane Substances 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- UQEAIHBTYFGYIE-UHFFFAOYSA-N hexamethyldisiloxane Chemical compound C[Si](C)(C)O[Si](C)(C)C UQEAIHBTYFGYIE-UHFFFAOYSA-N 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 238000006459 hydrosilylation reaction Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- SNVLJLYUUXKWOJ-UHFFFAOYSA-N methylidenecarbene Chemical compound C=[C] SNVLJLYUUXKWOJ-UHFFFAOYSA-N 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- HMMGMWAXVFQUOA-UHFFFAOYSA-N octamethylcyclotetrasiloxane Chemical compound C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O1 HMMGMWAXVFQUOA-UHFFFAOYSA-N 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 229920001558 organosilicon polymer Polymers 0.000 description 1
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920000056 polyoxyethylene ether Polymers 0.000 description 1
- 229940051841 polyoxyethylene ether Drugs 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 150000003141 primary amines Chemical class 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 125000001453 quaternary ammonium group Chemical group 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 150000003335 secondary amines Chemical class 0.000 description 1
- 125000005371 silicon functional group Chemical group 0.000 description 1
- 125000004469 siloxy group Chemical group [SiH3]O* 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/52—Amides or imides
- C08F220/54—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide
- C08F220/56—Acrylamide; Methacrylamide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F230/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal
- C08F230/04—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal containing a metal
- C08F230/08—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal containing a metal containing silicon
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
- C09K8/584—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific surfactants
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
The present invention relates to organic-silicon-modified amphipathic polymer type heavy crude thinners of a kind of easy breaking emulsion and dewatering and preparation method thereof, and the thinner preparation step is as follows: acrylamide, double bond containing organosilicon quaternary ammonium salt and solvent being mixed evenly, mixed liquor is obtained；It is passed through nitrogen, 60~80 DEG C is heated to, initiator is added under stiring, in 60~80 DEG C, 5~12 hours is reacted, obtains reaction solution；It will be poured into acetone or alcohol after reaction solution cooling, through suction filtration, immersion, washing, drying to get heavy crude thinner.Preparation method of the invention is easy to operate, cost is relatively low, and the thinner being prepared has preferable temperature-resistant anti-salt and viscosity reducing effect under low concentration, and is easy to breaking emulsion and dewatering, reduces later period water process difficulty.The thinner does not need to use with other additive compounds, and excellent combination property is again environmentally protective.
Description
Technical Field
The invention relates to an organic silicon modified amphiphilic polymer type thick oil viscosity reducer easy to break and dehydrate and a preparation method thereof, belonging to the technical field of thick oil exploitation viscosity reducers.
Background
With the continuous deepening of the oil exploitation degree, the proportion of the heavy oil resource is larger and larger, but the heavy oil is difficult to exploit, transport and store due to high density and high viscosity. The prior thick oil viscosity reduction technology comprises emulsification viscosity reduction, physical viscosity reduction, microorganism viscosity reduction and the like, wherein the thick oil emulsification viscosity reduction mining technology is the most wide application range and the most economic and effective method. The viscosity reducer for thick oil usually adopts a surfactant compounding mode, and the used surfactants are generally nonionic surfactants, anionic surfactants and amphoteric surfactants, wherein the anionic surfactants and the nonionic-anionic amphoteric surfactants have higher temperature resistance. The key point of thick oil emulsification viscosity reduction is the screening of the viscosity reducer, which not only requires good viscosity reduction effect on thick oil, high emulsification speed, good dispersion with thick oil, no formation of large oil drops, but also requires that an emulsification system is not too stable, thereby being beneficial to demulsification and dehydration of produced fluid. The good viscosity reducer for thick oil requires that the thick oil has the characteristics of flowing dispersion and static layering after viscosity reduction.
In recent years, scientific researchers in China develop various emulsifying viscosity reducers with excellent performance aiming at the requirements of thick oil exploitation under different mineral storage conditions, wherein the copolymerization/polycondensation type polymer emulsifying viscosity reducer can combine the characteristics of a surfactant and certain groups, and has the advantages of small using amount, high viscosity reducing efficiency, temperature resistance, salt resistance and the like for medium and high viscosity thick oil. The research and application of the organosilicon (polymer) surfactant on oil field drilling and crude oil demulsification have related documents and patents, and the related documents and patents used as the viscosity reducer for heavy oil recovery have fewer reports.
Chinese patent document CN 103450868A discloses a temperature-resistant and salt-resistant water-soluble amphiphilic polymer composite thick oil viscosity reducer. The viscosity-reducing thick oil is compounded by taking an amphiphilic polymer formed by quaternary random copolymerization of acrylamide, hydrophobic alkyl acrylamide, acrylamide alkyl ammonium chloride quaternary ammonium salt and nonionic polyether acrylate as a component A and a small molecular surfactant component B, and the viscosity-reducing thick oil capability is superior to that of OP-10 and a polymer-surfactant binary compound system and the like when the addition concentration is 0.3%.
Chinese patent document CN 102516972A discloses a comb-type modified polysiloxane anion water-based thick oil viscosity reducer. The viscosity reducer adopts a comb-shaped structure with a main chain of polydimethylsiloxane and a side chain of long-chain alkyl and propylene polyoxypropylene polyoxyethylene ether organic acid ester salt, the main side chain of the viscosity reducer is connected by a Si-C chemical bond, the surface activity and the interface activity are strong, the temperature resistance, the salt resistance and the hydrolysis resistance are good when the addition concentration is 0.5%, and the viscosity reducer has good viscosity reduction capability on thick oil. The method takes polymethyl hydrogen siloxane, hexamethyldisiloxane, octamethylcyclotetrasiloxane and the like as main raw materials, and is completed by three reactions of equilibrium copolymerization, chloroplatinic acid catalyzed hydrosilylation and anionization, and the method has the advantages of complex process steps and high cost.
At present, most of polymer heavy oil viscosity reducers are required to be compounded with other auxiliary agents in actual use, the price of the organopolysiloxane heavy oil viscosity reducers is high, and the two viscosity reducers have the problems that an emulsification system is stable, demulsification and dehydration of produced liquid are not facilitated, and the like.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the organic silicon modified amphiphilic polymer type thick oil viscosity reducer which has the effects of temperature resistance, salt resistance and viscosity reduction and is easy to demulsify and dehydrate. The viscosity reducer does not need to be compounded with other auxiliary agents for use, and is excellent in comprehensive performance and environment-friendly.
The invention also provides a preparation method of the organic silicon modified amphiphilic polymer type thick oil viscosity reducer easy to break milk and dehydrate.
The technical scheme of the invention is as follows:
an organosilicon modified amphiphilic polymer type thick oil viscosity reducer easy to break milk and dehydrate is an amphiphilic polymer generated by the reaction of acrylamide and organosilicon quaternary ammonium salt containing double bonds, and has a structure shown in a formula (I):
wherein R' is H or CH3；x:y＝100:0.5～5.0；
R is:
wherein: a is O or NH; a is 2-4; b is 2-4; r1Is CH3Or C2H5；R2Is CH3Or C2H5；R3、R4、R5Independently selected from OSi (CH)3)3、OCH3、OC2H5Or C1-C3 alkyl, R3、R4、R5The same or different; x is Cl, Br or I.
In a preferred embodiment of the invention, in the R group, a is NH, a ═ 3, b ═ 3, R1、R2Are all CH3，R3、R4、R5Are all OSi (CH)3)3X is Cl;
or,a is O, a is 2, b is 3, R1、R2Are all CH3，R3、R4、R5Are all OC2H5And X is Cl.
According to the invention, the double-bond containing organosilicon quaternary ammonium salt has a structure shown in a formula (II):
wherein: A. a, b, R', R1、R2、R3、R4、R5X has the same meaning as in formula (I);
preferably, R' is CH3A is NH, a is 3, b is 3, R1、R2Are all CH3，R3、R4、R5Are all OSi (CH)3)3X is Cl;
or, R' is CH3A is O, a is 2, b is 3, R1、R2Are all CH3，R3、R4、R5Are all OC2H5And X is Cl.
According to the invention, the thick oil viscosity reducer is white powder, and has the weight average molecular weight of: (1-5). times.106。
A preparation method of an organic silicon modified amphiphilic polymer type thick oil viscosity reducer easy to break milk and dehydrate comprises the following steps:
mixing acrylamide, organosilicon quaternary ammonium salt containing double bonds and a solvent, and stirring uniformly to obtain a mixed solution; introducing nitrogen, heating to 60-80 ℃, adding an initiator while stirring, and reacting at 60-80 ℃ for 5-12 hours to obtain a reaction solution; and cooling the reaction liquid, pouring the cooled reaction liquid into acetone or ethanol, and performing suction filtration, soaking, washing and drying to obtain the thick oil viscosity reducer.
According to the invention, the mass ratio of the acrylamide to the double-bond-containing organosilicon quaternary ammonium salt is preferably 100: 5-25; preferably, the mass ratio of the acrylamide to the double-bond-containing organosilicon quaternary ammonium salt is 100: 10-15.
According to the invention, the solvent is preferably one or the combination of more than two of acetone, tetrahydrofuran, benzene, toluene, cyclohexane, ethylene glycol dimethyl ether, 1, 4-dioxane, N-dimethylformamide or N, N-dimethylacetamide;
preferably, the solvent is one or a combination of more than two of tetrahydrofuran, 1, 4-dioxane, N-dimethylformamide or N, N-dimethylacetamide.
According to the invention, the solid content of the mixed solution is preferably 10-20 wt%; preferably, the mixed solution has a solid content of 15 wt%.
According to the invention, the initiator is preferably one or a combination of more than two of azo initiator, organic peroxy initiator, inorganic peroxy initiator or redox initiator; the mass of the initiator is 0.05-2% of the total mass of acrylamide and organosilicon quaternary ammonium salt containing double bonds;
preferably, the initiator is azobisisobutyronitrile; the mass of the initiator is 0.5-1.0% of the total mass of acrylamide and organosilicon quaternary ammonium salt containing double bonds.
According to the invention, the reaction temperature is preferably 65-75 ℃.
According to the optimization of the invention, the product obtained by suction filtration is soaked and washed for 5-10 times by acetone or ethanol, and is dried for 24-72 hours in vacuum at 60 ℃.
According to the invention, the preparation method of the double bond-containing organosilicon quaternary ammonium salt comprises the following steps:
mixing and stirring the alkyl acrylamide tertiary amine or alkyl acrylate tertiary amine, the halogenated alkyl silane and the solvent uniformly; reacting for 36-72 hours at 60-90 ℃, and cooling to room temperature; and (3) carrying out reduced pressure rotary steaming and washing to obtain the double-bond-containing organosilicon quaternary ammonium salt.
Preferably, the tertiary alkyl acrylamide-based amine or tertiary alkyl acrylate-based amine has a structure represented by formula (III):
wherein: A. a, R', R1、R2Has the same meaning as in formula (I).
Preferably, the haloalkylsilane has a structure represented by formula (IV):
wherein, b and R3、R4、R5X has the same meaning as in formula (I).
Preferably, the molar ratio of the alkyl acrylamide-based tertiary amine or the alkyl acrylate-based tertiary amine to the halogenated alkyl silane is 1: 1-3; more preferably, the molar ratio of the alkyl acrylamide-based tertiary amine or the alkyl acrylate-based tertiary amine to the halogenated alkylsilane is 1: 1.5-2.0.
Preferably, the solvent is one or a combination of more than two of methanol, ethanol, isopropanol, dimethyl sulfoxide, tetrahydrofuran, N-dimethylformamide or acetone; the mass of the solvent is 1-2 times of the total mass of the alkyl acrylamide tertiary amine or the alkyl acrylate tertiary amine and the halogenated alkyl silane; more preferably, the solvent is one or a combination of more than two of acetone, ethanol or isopropanol; the mass of the solvent is 1.5 times of the total mass of the alkyl acrylamide-based tertiary amine or the alkyl acrylate-based tertiary amine and the halogenated alkyl silane.
Preferably, the reaction temperature is 75-85 ℃, and the reaction time is 48-72 hours.
Preferably, the washing mode is washing with diethyl ether or petroleum ether for 3-5 times.
The technical scheme of the invention has the advantages that:
the organic silicon surfactant has the characteristics of low surface tension, high temperature resistance, strong dispersion and wetting performance and the like, and the organic silicon modified amphiphilic polymer type thick oil viscosity reducer is prepared by introducing an organic silicon functional group into a polymer structure side chain by taking acrylamide as a main raw material, and has the characteristics of simple process, low cost and the like.
The viscosity reducer has good capability of reducing the tension of an oil-water interface, has strong emulsifying capability, but has proper stability after emulsification, is beneficial to demulsification and dehydration of produced fluid, and reduces the difficulty of water treatment in the later period.
The organic silicon modified amphiphilic polymer type thick oil viscosity reducer provided by the invention does not need to be compounded with other auxiliary agents such as alkali, a small molecular surfactant and the like, and has better temperature resistance, salt tolerance and viscosity reduction effects when being used independently under lower concentration (less than or equal to 0.1%).
Drawings
FIG. 1 is an infrared spectrum of silicone quaternary ammonium salt monomer SQ1 of example 1.
FIG. 2 is an infrared spectrum of the silicone modified amphiphilic polymer type thick oil viscosity reducer PASQ1-1 prepared in example 1.
Detailed Description
The present invention will be further described with reference to the following examples, but is not limited thereto.
Meanwhile, the experimental methods described in the following examples are all conventional methods unless otherwise specified; the reagents and materials are commercially available, unless otherwise specified.
Example 1
(1) Synthesis of organosilicon Quaternary ammonium salt monomer SQ1
4.26g of (N, N-dimethylaminopropyl) methacrylamide, 18.62g of 3-chloropropyltris (trimethylsiloxy) silane and 34.32g of isopropanol were put into a three-necked flask and stirred uniformly. Reacting at 82 ℃ for 60 hours, and cooling to room temperature; most of the solvent and part of the unreacted starting material were removed by rotary evaporation under reduced pressure. Washing the residual distillate with diethyl ether for 3-5 times to obtain an organic silicon quaternary ammonium salt monomer SQ110.17g with a yield of 75%;
the synthesis reaction formula is as follows:
(2) synthesis of thickened oil viscosity reducer PASQ1-1
42.6g of Acrylamide (AM), 2.13g of organosilicon quaternary ammonium salt monomer SQ1, 298.2g N, N-Dimethylformamide (DMF) are respectively weighed and added into a thermometer and a thermometer2Introducing N into a four-neck flask with a gas conduit, a reflux condenser and a stirring device under stirring2Heating to 70 +/-5 ℃ after 30 minutes, weighing 0.224g of azobisisobutyronitrile, adding the weighed azobisisobutyronitrile into a reaction bottle in three batches, keeping the reaction temperature at 70 +/-5 ℃, reacting for 12 hours, naturally cooling the reaction liquid to room temperature, pouring the cooled reaction liquid into 500ML acetone, carrying out vacuum filtration to obtain a white powdery solid, soaking and washing the white powdery solid for 5 times by using acetone (300ML multiplied by 5), and carrying out vacuum drying at 60 ℃ for 48 hours to obtain an organic silicon modified amphiphilic polymer type thick oil viscosity reducer product PASQ 1-138.5 g with the yield of 86.0%.
The synthesized PASQ1-1 has the following structure:
FIG. 1 is an infrared spectrum of organosilicon quaternary ammonium salt monomer SQ1 in this example. As can be seen from FIG. 1, 3240cm-1、1654cm-1And 1206cm-1Is a characteristic absorption peak of an amide group, 1120-1051 cm-1Two asymmetric peaks are Si-O-Si stretching vibration absorption peaks of 840cm-1And 750cm-1Is Si- (CH)3)3Tensile vibration absorption peak of medium Si-C, 1256cm-1Is Si-CH31630cm in terms of deformation vibration absorption peak of Si-C-1、976cm-1And 923cm-1Is a characteristic absorption peak of C ═ C bond, 3415cm-1And 1465cm-1Two peaks correspond to positive nitrogen ions of 3415cm-1Is covered. The presence of these characteristic peaks indicates that the target product contains double bonds, amide groups, siloxy groups and nitrogen cations.
The nuclear magnetic (1H NMR) data for Quaternary silicone ammonium salt monomer SQ1 in this example are as follows:1H(NMR)(CDCl3):0.05-0.12ppm(SiOSiCH3,27H),0.43-0.53ppm(CH2CH2CH2Si,2H),5.3-5.7ppm(CH2＝C,2H),3.2-3.3ppm(CH2CH2CH2N，2H),3.1-3.2ppm(CH2CH2NCH2CH2，4H)，3.0-3.1ppm(CH3NCH3，6H),2.6-2.7ppm(CH2CH2CH2N),2.0-2.1ppm(CH2CH2CH2Si,2H)，1.7-1.8ppm(CH2CH2CH2Si,2H),1.6-1.7ppm(NHCH2CH2CH2，1H)。
FIG. 2 is an infrared spectrum of the silicone modified amphiphilic polymer type thick oil viscosity reducer PASQ1-1 prepared in this example. As can be seen from FIG. 2, 3340cm-1Is the N-H stretching vibration peak of primary Amine (AM) in the structure of PASQ1-1, and is 3195cm-1Is the N-H stretching vibration peak of secondary amine (SQ), 1666cm-1Is the C ═ 0 stretching vibration peak of Amide (AM), 1453cm-1Is a mixed in-plane bending vibration peak of amide, 1120-1051 cm-1Two asymmetric peaks are Si-O-Si stretching vibration absorption peaks of 840cm-1And 750cm-1Is Si- (CH)3)3Stretching vibration absorption peak of medium Si-C, 1260cm-1Is Si-CH3Has a deformation vibration absorption peak of Si-C of 3415cm-1Is a characteristic peak of quaternary ammonium positive ions, is covered and is 1000-900 cm-1No stretching vibration peak of O ═ C of the alkene monomer appears in the interval, which indicates that the polymerization reaction is completely carried out and no monomer is remained.
The nuclear magnetic (1H NMR) test data of the organosilicon modified amphiphilic polymer type heavy oil viscosity reducer PASQ1-1 prepared in the embodiment are as follows:
1H(NMR)(D2O):0.06-0.11ppm(SiOSiCH3,27H),0.53ppm(CH2CH2CH2Si,2H),3.26ppm(CH2CH2CH2N，2H),3.13ppm(CH2CH2NCH2CH2，4H),3.01ppm(CH3NCH3，6H),2.78ppm(CH2CH2CH2N),2.13ppm(CH2CHCO,1H),2.12ppm(CH2CH2CH2Si,2H),1.705ppm(CH2CH2CH2S i,2H),1.69ppm(NHCH2CH2CH2，1H)，1.585ppm(CH2CHC,4H),1.07ppm(CH2CCH3and 3H). The prepared viscosity reducer is proved to have an expected structure.
Examples 2 to 5
The synthesis of the viscosity reducers PASQ1-2, PASQ1-3, PASQ1-4 and PASQ1-5 is as described in example 1, except that: the mass ratio of SQ1 to AM was different (as shown in table 1 below), and the other conditions were identical.
Table 1: EXAMPLES 1 TO 5 thickened oil viscosity reducer PASQ1 Experimental results
| Viscosity reducer | SQ1/AM(％) | Yield (%) | Molecular weight (. times.10)6) | |
| Example 1 | PASQ1-1 | 5 | 86.0 | 1.8 |
| Example 2 | PASQ1-2 | 10 | 86.9 | 2.8 |
| Example 3 | PASQ1-3 | 15 | 88.0 | 3.6 |
| Example 4 | PASQ1-4 | 20 | 85.0 | 4.0 |
| Example 5 | PASQ1-5 | 25 | 84.1 | 4.5 |
Example 6
(1) Synthesis of organosilicon Quaternary ammonium salt monomer SQ2
3.93g of dimethylaminoethyl methacrylate, 12.04g of 3-chloropropyl (triethoxy) silane and 23.96g of ethanol are added into a three-neck flask and stirred uniformly. After 72 hours at 78 ℃ the reaction was cooled to room temperature and the majority of the solvent and some unreacted starting material were removed by rotary evaporation under reduced pressure. Washing the residual distillate with petroleum ether for 3-5 times to obtain an organic silicon quaternary ammonium salt monomer SQ26.96g with the yield of 70%;
the synthesis reaction formula is as follows:
(2) synthesis of thickened oil viscosity reducer PASQ2
42.6g of acrylamide, 4.26g of organosilicon quaternary ammonium salt monomer SQ2 and 312.4g of tetrahydrofuran were weighed and charged with a thermometer, N2Introducing N into a four-neck flask with a gas conduit, a reflux condenser and a stirring device under stirring2Heating to 70 +/-5 ℃ after 30 minutes, weighing 0.234g of azobisisobutyronitrile, adding the weighed azobisisobutyronitrile into a reaction bottle in three batches, keeping the reaction temperature at 70 +/-5 ℃, reacting for 10 hours, naturally cooling the reaction liquid to room temperature, pouring the cooled reaction liquid into 500ML acetone, carrying out vacuum filtration to obtain a white powdery solid, soaking and washing the white powdery solid for 5 times by using acetone (300ML multiplied by 5), and carrying out vacuum drying at 60 ℃ for 48 hours to obtain 41.05g of the organic silicon modified amphiphilic polymer heavy oil viscosity reducer PASQ2 product, wherein the yield is 87.6 percent, and the molecular weight is 2.6 multiplied by 106。
The synthesized PASQ2 has the following structure:
test example 1
Viscosity reduction performance evaluation of thick oil viscosity reducer PASQ1-2 and PASQ2
Preparing the organic silicon modified amphiphilic polymer type thick oil viscosity reducer into aqueous solution with a series of concentration gradients, adding the aqueous solution of the viscosity reducer into thick oil according to the oil-water volume ratio of 7:3 at 50 ℃ (simulated formation temperature), stirring for 2 hours to form emulsion, and adopting a Brookfield DV-II + viscometer (rotor type SC4-31), wherein the test temperature of the experimental viscosity value is 50 ℃, and the shear rate is 7.34s-1The crude oil emulsion was tested for viscosity under reservoir conditions. A thickened oil sample is provided by a certain oil field, wherein the thickened oil 1 is common thickened oil (electric dehydration) and has the viscosity of 1350mPa & s at 50 ℃; the thickened oil 2 is common thickened oil (electric dehydration), and the viscosity is 4200mPa & s at 50 ℃; the thickened oil 3 is super thickened oil, and the viscosity is 83000 mPa.s at 50 ℃.
Table 2: viscosity reduction effect of thick oil viscosity reducer on thick oil with different viscosities
Note: the viscosity reduction effect is as follows: viscosity reduction rate/use concentration of viscosity reducer.
As can be seen from table 2, the PASQ1 series viscosity reducer has good viscosity reduction effects on thick oil 1, thick oil 2 and thick oil 3, the PASQ2 viscosity reducer has good viscosity reduction effects on thick oil 1 and thick oil 2, and has no viscosity reduction effect on thick oil 3; the viscosity reducing effect on the thick oil 1, namely, the PASQ2 is better than that of the PASQ1, and the viscosity reducing effect on the thick oil 2, namely, the PASQ1 is better than that of the PASQ 2.
Test example 2
Evaluation of salt tolerance of viscosity reducer PASQ1-2
Preparing series gradient mineralized water according to the table 3, preparing a thick oil viscosity reducer PASQ1-2 solution with the mineralized water, wherein the concentration is 1.0g/L, mixing according to an oil-water ratio of 7:3 (an oil sample is thick oil 2), and reducing the viscosity reduction rate of the viscosity reducer under different mineralization degrees at the temperature of 50 ℃ is shown in the table 4.
Table 3: mineralized water formula
Table 4: viscosity reduction rate of viscosity reducer PASQ1-2 with different degrees of mineralization
| Total degree of mineralization (mg/L) | Viscosity (mPa. s) | Viscosity reduction Rate (%) | |
| Blank space | 0 | 135 | 90 |
| 1 | 9374 | 145 | 89.3 |
| 2 | 23435 | 169 | 87.5 |
| 3 | 34786 | 225 | 83.3 |
| 4 | 37496 | 248.4 | 81.6 |
As can be seen from Table 4, the viscosity reduction rate of the viscosity reducer is reduced along with the increase of the mineralization degree, but the viscosity reduction rate is still more than 80% when the total mineralization degree reaches 37496mg/L, which indicates that the PASQ1 viscosity reducer has certain salt tolerance.
Test example 3
Evaluation of temperature resistance of viscosity reducer PASQ1
Preparing viscosity reducers PASQ1-1, PASQ1-2 and PASQ1-3 into aqueous solution with the concentration of 1.0g/L, carrying out solution aging treatment at the constant temperature of 65 ℃, sampling at intervals, mixing with thickened oil (the oil sample is thickened oil 2) according to the oil-water volume ratio of 7:3, stirring for 2 hours to form emulsion, and testing the viscosity of the emulsion.
Table 5: effect of aging time on viscosity reduction Rate
Viscosity reduction rate
As can be seen from Table 5, after 15 days of aging, the viscosity reduction rate of the viscosity reducer is basically unchanged, which indicates that the PASQ1 viscosity reducer has certain aging resistance.
Test example 4
Evaluation of stability of emulsion formed after viscosity reducer is added to thickened oil
Respectively preparing viscosity reducers PASQ1-2 and PASQ2 into aqueous solutions with the concentration of 1.0g/L, mixing the aqueous solutions according to the volume ratio of 7:3 of oil to water (oil sample is thickened oil 2), stirring the aqueous solutions for 2 hours at the temperature of 50 ℃ to form emulsions, pouring the emulsions into a sample bottle, and measuring by using a TURBISAN LAB stability analysis tester developed by FORMULATION, France, wherein the measurement parameters are as follows: temperature 50 ℃, scan parameters were once per minute, scan time: 0.5 hour.
Table 6: dehydration rate of emulsion formed after viscosity reducer is added into thickened oil
| Sample (I) | Rate of dewatering |
| PASQ1-2 | 76.2％ |
| PASQ2 | 84.2％ |
As can be seen from Table 6, the dehydration rate of the emulsion to which the PASQ2 viscosity reducer (1.0 g/L) was added was 84.2% and the dehydration rate of the emulsion to which the PASQ1 viscosity reducer (1.0 g/L) was added was 76.2% within 0.5 hours. The emulsion after the two viscosity reducers are added is quickly dehydrated in a short time, so that the thick oil viscosity reduction has the characteristics of flowing dispersion and standing layering.
Claims (12)
1. An organosilicon modified amphiphilic polymer type thick oil viscosity reducer easy to break milk and dehydrate is characterized in that the thick oil viscosity reducer is an amphiphilic polymer generated by the reaction of acrylamide and organosilicon quaternary ammonium salt containing double bonds, and has a structure shown in a formula (I):
wherein R' is H or CH3；x:y＝100:0.5～5.0；
R is:
wherein: a is O or NH; a is 2-4; b is 2-4; r1Is CH3Or C2H5；R2Is CH3Or C2H5；R3、R4、R5Independently selected from OSi (CH)3)3、OCH3、OC2H5Or C1-C3 alkyl, R3、R4、R5The same or different; x is Cl, Br or I.
2. The easy-breaking-milk-dehydration silicone-modified amphiphilic polymer type heavy oil viscosity reducer according to claim 1, wherein in the R group, A is NH, a-3, b-3, R1、R2Are all CH3，R3、R4、R5Are all OSi (CH)3)3X is Cl;
or A is O, a is 2, b is 3, R1、R2Are all CH3，R3、R4、R5Are all OC2H5And X is Cl.
3. The easy-breaking-milk-dehydration silicone-modified amphiphilic polymer type thick oil viscosity reducer according to claim 1, wherein the double-bond-containing silicone quaternary ammonium salt has a structure represented by formula (II):
wherein: A. a, b, R', R1、R2、R3、R4、R5X has the same meaning as in formula (I).
4. The breakable milk dehydrated silicone-modified amphiphilic polymer of claim 3The physical type viscosity reducer for thick oil is characterized in that R' in the formula (II) is CH3A is NH, a is 3, b is 3, R1、R2Are all CH3，R3、R4、R5Are all OSi (CH)3)3And X is Cl.
5. The viscosity reducer of silicone modified amphiphilic polymer type heavy oil easy to break and dehydrate in claim 3, wherein R' in formula (II) is CH3A is O, a is 2, b is 3, R1、R2Are all CH3，R3、R4、R5Are all OC2H5And X is Cl.
6. The viscosity reducer of silicone modified amphiphilic polymer type thick oil with easy breaking and dehydration of milk according to claim 1, wherein the viscosity reducer of thick oil is white powder, and has weight average molecular weight: (1-5). times.106。
7. The preparation method of the easily broken and dehydrated organic silicon modified amphiphilic polymer type thick oil viscosity reducer as claimed in any one of claims 1 to 6, comprising the following steps:
mixing acrylamide, organosilicon quaternary ammonium salt containing double bonds and a solvent, and stirring uniformly to obtain a mixed solution; introducing nitrogen, heating to 60-80 ℃, adding an initiator while stirring, and reacting at 60-80 ℃ for 5-12 hours to obtain a reaction solution; and cooling the reaction liquid, pouring the cooled reaction liquid into acetone or ethanol, and performing suction filtration, soaking, washing and drying to obtain the thick oil viscosity reducer.
8. The preparation method of the easy-breaking and dehydrating organosilicone modified amphiphilic polymer type thick oil viscosity reducer according to claim 7, wherein the mass ratio of acrylamide to double-bond-containing organosilicone quaternary ammonium salt is 100: 5-25.
9. The preparation method of the easy-breaking-milk-dehydration organosilicon modified amphiphilic polymer type thick oil viscosity reducer according to claim 7, wherein the solvent is one or a combination of more than two of acetone, tetrahydrofuran, benzene, toluene, cyclohexane, ethylene glycol dimethyl ether, 1, 4-dioxane, N-dimethylformamide or N, N-dimethylacetamide;
the initiator is one or the combination of more than two of azo initiator, organic peroxide initiator, inorganic peroxide initiator or redox initiator; the mass of the initiator is 0.05-2% of the total mass of acrylamide and organosilicon quaternary ammonium salt containing double bonds.
10. The preparation method of the easily broken milk and dehydrated organic silicon modified amphiphilic polymer type thick oil viscosity reducer according to claim 7, wherein the solid content of the mixed solution is 10-20 wt%.
11. The preparation method of the easily broken milk and dehydrated organic silicon modified amphiphilic polymer type thick oil viscosity reducer according to claim 7, wherein the reaction temperature is 65-75 ℃.
12. The preparation method of the easy-breaking and dehydrating organosilicone modified amphiphilic polymer type thick oil viscosity reducer according to claim 7, wherein the preparation method of the double-bond-containing organosilicone quaternary ammonium salt comprises the following steps:
mixing and stirring the alkyl acrylamide tertiary amine or alkyl acrylate tertiary amine, the halogenated alkyl silane and the solvent uniformly; reacting for 36-72 hours at 60-90 ℃, and cooling to room temperature; performing reduced pressure rotary steaming and washing to obtain organosilicon quaternary ammonium salt containing double bonds;
the molar ratio of the alkyl acrylamide-based tertiary amine or alkyl acrylate-based tertiary amine to the halogenated alkyl silane is 1: 1-3;
the solvent is one or the combination of more than two of methanol, ethanol, isopropanol, dimethyl sulfoxide, tetrahydrofuran, N-dimethylformamide or acetone; the mass of the solvent is 1-2 times of the total mass of the alkyl acrylamide tertiary amine or the alkyl acrylate tertiary amine and the halogenated alkyl silane.
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