CN113801155B - Chemical agent suitable for preparing quartz sand anti-adsorption hydrophilic coating, and preparation and application thereof - Google Patents
Chemical agent suitable for preparing quartz sand anti-adsorption hydrophilic coating, and preparation and application thereof Download PDFInfo
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- CN113801155B CN113801155B CN202010539590.0A CN202010539590A CN113801155B CN 113801155 B CN113801155 B CN 113801155B CN 202010539590 A CN202010539590 A CN 202010539590A CN 113801155 B CN113801155 B CN 113801155B
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- Prior art keywords
- hydrophilic coating
- coating treatment
- acid
- polyether
- alkoxysilane
- Prior art date
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 164
- 239000011248 coating agent Substances 0.000 title claims abstract description 116
- 238000000576 coating method Methods 0.000 title claims abstract description 116
- 239000006004 Quartz sand Substances 0.000 title claims abstract description 89
- 238000002360 preparation method Methods 0.000 title claims abstract description 25
- 238000001179 sorption measurement Methods 0.000 title abstract description 33
- 239000013043 chemical agent Substances 0.000 title abstract description 8
- -1 alkoxy silane Chemical compound 0.000 claims abstract description 116
- 229920000570 polyether Polymers 0.000 claims abstract description 82
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 72
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 69
- 239000004576 sand Substances 0.000 claims abstract description 51
- 229910000077 silane Inorganic materials 0.000 claims abstract description 23
- 125000003118 aryl group Chemical group 0.000 claims abstract description 9
- 125000000753 cycloalkyl group Chemical group 0.000 claims abstract description 9
- 125000003342 alkenyl group Chemical group 0.000 claims abstract description 5
- 238000006243 chemical reaction Methods 0.000 claims description 95
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 66
- 239000007788 liquid Substances 0.000 claims description 59
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 claims description 45
- XXROGKLTLUQVRX-UHFFFAOYSA-N allyl alcohol Chemical compound OCC=C XXROGKLTLUQVRX-UHFFFAOYSA-N 0.000 claims description 40
- 239000000243 solution Substances 0.000 claims description 39
- 239000003054 catalyst Substances 0.000 claims description 32
- 239000012530 fluid Substances 0.000 claims description 32
- 238000000034 method Methods 0.000 claims description 27
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 25
- 230000002378 acidificating effect Effects 0.000 claims description 21
- 239000007864 aqueous solution Substances 0.000 claims description 20
- 239000000413 hydrolysate Substances 0.000 claims description 20
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 19
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims description 17
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 16
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 claims description 15
- 229910052783 alkali metal Inorganic materials 0.000 claims description 15
- 229910052757 nitrogen Inorganic materials 0.000 claims description 15
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 14
- 239000001257 hydrogen Substances 0.000 claims description 14
- 229910052739 hydrogen Inorganic materials 0.000 claims description 14
- 239000002253 acid Substances 0.000 claims description 13
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims description 12
- 125000000217 alkyl group Chemical group 0.000 claims description 11
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 10
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 claims description 9
- XBDQKXXYIPTUBI-UHFFFAOYSA-N Propionic acid Chemical compound CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 claims description 8
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical compound OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 8
- 230000001105 regulatory effect Effects 0.000 claims description 8
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 7
- 239000012298 atmosphere Substances 0.000 claims description 7
- 229910017604 nitric acid Inorganic materials 0.000 claims description 7
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims description 6
- 150000001340 alkali metals Chemical class 0.000 claims description 6
- 150000001342 alkaline earth metals Chemical class 0.000 claims description 6
- 235000019253 formic acid Nutrition 0.000 claims description 6
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 5
- 229910017053 inorganic salt Inorganic materials 0.000 claims description 5
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 5
- BMYNFMYTOJXKLE-UHFFFAOYSA-N 3-azaniumyl-2-hydroxypropanoate Chemical compound NCC(O)C(O)=O BMYNFMYTOJXKLE-UHFFFAOYSA-N 0.000 claims description 4
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 4
- 229940125717 barbiturate Drugs 0.000 claims description 4
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical compound I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 claims description 4
- 229940071870 hydroiodic acid Drugs 0.000 claims description 4
- QWPPOHNGKGFGJK-UHFFFAOYSA-N hypochlorous acid Chemical compound ClO QWPPOHNGKGFGJK-UHFFFAOYSA-N 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 claims description 2
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 claims description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 2
- 229910002651 NO3 Inorganic materials 0.000 claims description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 2
- 229910019142 PO4 Inorganic materials 0.000 claims description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-L Phosphate ion(2-) Chemical compound OP([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-L 0.000 claims description 2
- HNYOPLTXPVRDBG-UHFFFAOYSA-N barbituric acid Chemical compound O=C1CC(=O)NC(=O)N1 HNYOPLTXPVRDBG-UHFFFAOYSA-N 0.000 claims description 2
- 150000007942 carboxylates Chemical class 0.000 claims description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-M dihydrogenphosphate Chemical compound OP(O)([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-M 0.000 claims description 2
- QAOWNCQODCNURD-UHFFFAOYSA-M hydrogensulfate Chemical compound OS([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-M 0.000 claims description 2
- 150000007529 inorganic bases Chemical class 0.000 claims description 2
- 150000007524 organic acids Chemical class 0.000 claims description 2
- 239000010452 phosphate Substances 0.000 claims description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 2
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 2
- 239000002002 slurry Substances 0.000 claims 1
- 229920000642 polymer Polymers 0.000 abstract description 49
- 238000011049 filling Methods 0.000 abstract description 33
- 230000032683 aging Effects 0.000 abstract description 11
- 238000002347 injection Methods 0.000 abstract description 10
- 239000007924 injection Substances 0.000 abstract description 10
- 238000006116 polymerization reaction Methods 0.000 abstract description 3
- 230000002265 prevention Effects 0.000 abstract description 3
- 125000004435 hydrogen atom Chemical group [H]* 0.000 abstract description 2
- 238000009776 industrial production Methods 0.000 abstract 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 36
- 239000012295 chemical reaction liquid Substances 0.000 description 35
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 33
- 239000008367 deionised water Substances 0.000 description 30
- 229910021641 deionized water Inorganic materials 0.000 description 30
- 239000000203 mixture Substances 0.000 description 29
- 239000003921 oil Substances 0.000 description 25
- 238000003756 stirring Methods 0.000 description 25
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 22
- 230000001276 controlling effect Effects 0.000 description 18
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 15
- 239000010779 crude oil Substances 0.000 description 15
- 229920001451 polypropylene glycol Polymers 0.000 description 15
- 238000012360 testing method Methods 0.000 description 15
- 238000009495 sugar coating Methods 0.000 description 14
- YUYCVXFAYWRXLS-UHFFFAOYSA-N trimethoxysilane Chemical compound CO[SiH](OC)OC YUYCVXFAYWRXLS-UHFFFAOYSA-N 0.000 description 14
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 12
- 239000000377 silicon dioxide Substances 0.000 description 12
- 239000000126 substance Substances 0.000 description 12
- 238000004090 dissolution Methods 0.000 description 11
- 238000010438 heat treatment Methods 0.000 description 11
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 11
- 229910052697 platinum Inorganic materials 0.000 description 11
- 238000006467 substitution reaction Methods 0.000 description 11
- 238000001816 cooling Methods 0.000 description 10
- 238000006073 displacement reaction Methods 0.000 description 10
- 239000000463 material Substances 0.000 description 9
- 229920002401 polyacrylamide Polymers 0.000 description 9
- 238000002791 soaking Methods 0.000 description 9
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 8
- BNIILDVGGAEEIG-UHFFFAOYSA-L disodium hydrogen phosphate Chemical compound [Na+].[Na+].OP([O-])([O-])=O BNIILDVGGAEEIG-UHFFFAOYSA-L 0.000 description 8
- 239000011521 glass Substances 0.000 description 8
- 230000000903 blocking effect Effects 0.000 description 7
- 230000008859 change Effects 0.000 description 7
- 239000003153 chemical reaction reagent Substances 0.000 description 7
- 230000007062 hydrolysis Effects 0.000 description 7
- 238000006460 hydrolysis reaction Methods 0.000 description 7
- 239000003129 oil well Substances 0.000 description 7
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 7
- UIDUKLCLJMXFEO-UHFFFAOYSA-N propylsilane Chemical compound CCC[SiH3] UIDUKLCLJMXFEO-UHFFFAOYSA-N 0.000 description 7
- 230000015556 catabolic process Effects 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 6
- 238000006731 degradation reaction Methods 0.000 description 6
- 238000007599 discharging Methods 0.000 description 6
- 125000001033 ether group Chemical group 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000011161 development Methods 0.000 description 5
- 230000018109 developmental process Effects 0.000 description 5
- PZJJKWKADRNWSW-UHFFFAOYSA-N trimethoxysilicon Chemical group CO[Si](OC)OC PZJJKWKADRNWSW-UHFFFAOYSA-N 0.000 description 5
- YASYEJJMZJALEJ-UHFFFAOYSA-N Citric acid monohydrate Chemical compound O.OC(=O)CC(O)(C(O)=O)CC(O)=O YASYEJJMZJALEJ-UHFFFAOYSA-N 0.000 description 4
- 239000003125 aqueous solvent Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 229960004106 citric acid Drugs 0.000 description 4
- 229960002303 citric acid monohydrate Drugs 0.000 description 4
- 230000005660 hydrophilic surface Effects 0.000 description 4
- 239000011259 mixed solution Substances 0.000 description 4
- 230000035699 permeability Effects 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 238000009738 saturating Methods 0.000 description 4
- 239000011780 sodium chloride Substances 0.000 description 4
- UCSBCWBHZLSFGC-UHFFFAOYSA-N tributoxysilane Chemical compound CCCCO[SiH](OCCCC)OCCCC UCSBCWBHZLSFGC-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- BZLVMXJERCGZMT-UHFFFAOYSA-N Methyl tert-butyl ether Chemical compound COC(C)(C)C BZLVMXJERCGZMT-UHFFFAOYSA-N 0.000 description 2
- 229910052936 alkali metal sulfate Inorganic materials 0.000 description 2
- 125000003545 alkoxy group Chemical group 0.000 description 2
- 239000001110 calcium chloride Substances 0.000 description 2
- 235000011148 calcium chloride Nutrition 0.000 description 2
- 229910001628 calcium chloride Inorganic materials 0.000 description 2
- 238000002144 chemical decomposition reaction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 102000004169 proteins and genes Human genes 0.000 description 2
- 108090000623 proteins and genes Proteins 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- QQQSFSZALRVCSZ-UHFFFAOYSA-N triethoxysilane Chemical compound CCO[SiH](OCC)OCC QQQSFSZALRVCSZ-UHFFFAOYSA-N 0.000 description 2
- OSDWBNJEKMUWAV-UHFFFAOYSA-N Allyl chloride Chemical compound ClCC=C OSDWBNJEKMUWAV-UHFFFAOYSA-N 0.000 description 1
- 239000004155 Chlorine dioxide Substances 0.000 description 1
- 239000007818 Grignard reagent Substances 0.000 description 1
- 229910000288 alkali metal carbonate Inorganic materials 0.000 description 1
- 150000008041 alkali metal carbonates Chemical class 0.000 description 1
- 229910001963 alkali metal nitrate Inorganic materials 0.000 description 1
- 229910000318 alkali metal phosphate Inorganic materials 0.000 description 1
- 229910001964 alkaline earth metal nitrate Inorganic materials 0.000 description 1
- 229910000316 alkaline earth metal phosphate Inorganic materials 0.000 description 1
- 150000001413 amino acids Chemical class 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000003190 augmentative effect Effects 0.000 description 1
- 239000012620 biological material Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 235000019398 chlorine dioxide Nutrition 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000004925 denaturation Methods 0.000 description 1
- 230000036425 denaturation Effects 0.000 description 1
- 235000019441 ethanol Nutrition 0.000 description 1
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 125000002572 propoxy group Chemical group [*]OC([H])([H])C(C([H])([H])[H])([H])[H] 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000002390 rotary evaporation Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000004526 silane-modified polyether Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic System
- C07F7/02—Silicon compounds
- C07F7/08—Compounds having one or more C—Si linkages
- C07F7/18—Compounds having one or more C—Si linkages as well as one or more C—O—Si linkages
- C07F7/1804—Compounds having Si-O-C linkages
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/10—Coating or impregnating
- C04B20/1018—Coating or impregnating with organic materials
- C04B20/1029—Macromolecular compounds
- C04B20/1037—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C41/00—Preparation of ethers; Preparation of compounds having groups, groups or groups
- C07C41/01—Preparation of ethers
- C07C41/02—Preparation of ethers from oxiranes
- C07C41/03—Preparation of ethers from oxiranes by reaction of oxirane rings with hydroxy groups
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic System
- C07F7/02—Silicon compounds
- C07F7/08—Compounds having one or more C—Si linkages
- C07F7/18—Compounds having one or more C—Si linkages as well as one or more C—O—Si linkages
- C07F7/1804—Compounds having Si-O-C linkages
- C07F7/1872—Preparation; Treatments not provided for in C07F7/20
- C07F7/1876—Preparation; Treatments not provided for in C07F7/20 by reactions involving the formation of Si-C linkages
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
- C08G65/26—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds
- C08G65/2603—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds the other compounds containing oxygen
- C08G65/2606—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds the other compounds containing oxygen containing hydroxyl groups
- C08G65/2609—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds the other compounds containing oxygen containing hydroxyl groups containing aliphatic hydroxyl groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
- C08G65/32—Polymers modified by chemical after-treatment
- C08G65/329—Polymers modified by chemical after-treatment with organic compounds
- C08G65/336—Polymers modified by chemical after-treatment with organic compounds containing silicon
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D171/00—Coating compositions based on polyethers obtained by reactions forming an ether link in the main chain; Coating compositions based on derivatives of such polymers
- C09D171/02—Polyalkylene oxides
Abstract
The invention relates to a chemical agent suitable for preparing a quartz sand anti-adsorption hydrophilic coating, and preparation and application thereof, in particular to alkoxy silane end-capped polyether, and preparation and application thereof, which mainly solves the problem of polymer and ageing adsorption prevention of an oil-water well in a polymerization injection area. The alkoxysilane-terminated polyether of the present invention includes any of the structures of the general molecular formula (1): wherein R is H orR 1 、R 2 、R 3 R is as follows 4 Independently selected from hydrogen atoms or C 1 ～C 6 Alkyl, cycloalkyl, alkenyl or aryl groups of (a)A base; the technical proposal that n is an addition number and the value range is 0-30 solves the problem well, and can be used in the industrial production of the oil field oil-water well filling sand.
Description
Technical Field
The invention relates to a chemical agent suitable for preparing a quartz sand anti-adsorption hydrophilic coating, and preparation and application thereof, and comprises alkoxy silane end-capped polyether, and preparation and application thereof, and mainly solves the problem of polymer and ageing adsorption prevention of an oil-water well in a polymerization injection area.
Background
After the polymer flooding is carried out on the oil reservoir after long-term polymer water solution injection, the polymer is continuously hydrolyzed and adsorbed in a high-temperature and high-salt environment, and under the continuous flushing of a large amount of stratum water, the polymer in the residual stratum continuously enriches high-valence metal ions in the stratum water, and continuously wraps and deposits with inorganic sediment, crude oil and the like in the stratum water to generate gel-like plugs, so that the stratum is blocked, the stratum permeability is reduced, the injection allocation pressure is increased, the oil well production liquid is reduced, and the development of the oil reservoir is seriously influenced. The phenomenon can appear again after the blockage is removed, the blockage removal effective period is influenced, and the exploitation efficiency is reduced. The main research and practical examples of the water flooding underinjection of the domestic polymer injection well are mainly concentrated on the fields of the domestic Daqing oil field, the victory oil field and the like for developing the polymer injection tertiary oil recovery test block.
The reason of the water-flooding underinjection of the polymer injection well is complex, and the blockage wraps sediment, scale, greasy dirt and the like by using polymers, so that the difficulty is relieved. No related documents are found at present, and related field technicians obtain that the main plugs are polymer aggregate, scale and oil stain mixed plugs through plug impact analysis, and no related study is carried out on the plugging mode and the reservoir plugging range.
In order to solve the problem of polymer and aging adsorption prevention of oil-water wells in the polymerization injection zone, many researchers have tested various methods for degrading polyacrylamide. The method mainly comprises the modes of mechanical degradation, thermal degradation, chemical degradation, microbial degradation and the like (development of polyacrylamide degradation research for oil displacement, liu Dexin, zhao Xiutai and the like), the mechanisms and degradation conditions of various degradation modes are different, and for a reservoir blocking removal technology, the method can be used for referencing related water treatment literature, and the chemical degradation mode is more suitable for blocking removal due to the limitation of construction conditions and reservoir conditions. Daqing oil fields report that special surfactants are used as depolymerization agent augmented injection tests, but the validity period is not long. The conventional acidification, filling and other processes of oil extraction in the victory oilfield are used for carrying out the blocking removal work, so that the effect is poor and the effective period is short; the individual test wells in the victory oil field use strong oxidants such as chlorine dioxide, hydrogen peroxide and the like as blocking remover, and have certain effects, but the safety is poor, the method is not suitable for storage, transportation and site construction, and the HSE requirement cannot be met.
On the basis of the existing blockage removing technology, how to prevent the blockage from being removed again after the blockage removing is also an important direction in the research. The invention adopts the modification of the surface of the filling sand to realize the protection of the oil layer in the near-wellbore zone. Related basic researches show that the polyacrylamide for oil displacement is a main factor for causing the blockage of the oil-water well of the development unit in reservoir denaturation, aging and formation of composite blockage. The adsorption and trapping of the polymer on the sand surface of the sand-preventing layer filling sand causes a large amount of stratum particles to be retained and accumulated in the sand-preventing layer, so that the permeability of the sand-preventing layer is reduced. Therefore, reducing the adsorption of the polymer on the quartz sand filling layer is a key for realizing the protection of the oil layer in the near-wellbore zone.
The formation is relatively complex in the composition of the produced fluids, including water containing inorganic salts, clay components, crude oil, polyacrylamide, and aged polyacrylamide. If reduced adsorption of the polymer is to be achieved, it may be desirable to resist adsorption of all of the above components. There are two technical routes to reduce adsorption. The first method is to modify the surface of the filling sand into a low-energy surface by using a low-energy fluorosilicone material, and the adsorption condition of the low-energy surface to various substances is usually low. The second is polyether hydrophilic material. Such materials preferentially bind water in the presence of water, resulting in the various materials described above not binding to the hydrophilic surface. The technical route of modifying the surface of the material by polyether is applied to a plurality of biological materials, and the material modified by polyether is basically not adsorbed to various proteins. Proteins are polymers of various amino acids, which are similar in physicochemical properties to polyacrylamide. Meanwhile, polyether is a hydrophilic material and has oleophobic property in the presence of water. Compared with the fluorosilicone material, the polyether material has lower cost and is more suitable for treating quartz sand. After the quartz sand with the modified surface is used as a sand control belt to be extruded into a stratum, the polymer adsorption of a well entering zone is hopefully reduced, the blocking removal effective period is prolonged, the relative permeability of an oil phase is not influenced, the oil well liquid production can be effectively maintained, and the problem of blocking of the oil well polymer is solved.
With the continuous development and deepening of the triple-production technology, the follow-up triple-production pilot test block can be expected to gradually expand to a second-class oil reservoir and a third-class oil reservoir with lower permeability, and under the oil reservoir condition, plugs mainly made of ageing polymers are more likely to cause damage to the reservoir, so that development of tertiary oil recovery is affected. This patent can provide corresponding technical support for the tertiary oil recovery that can follow-up develop.
Disclosure of Invention
One of the problems to be solved by the invention is that the adhesion of the ageing polymer and crude oil compound on the surface of the oil-water well filling sand reduces the liquid yield of the oil-water well and the crude oil yield in the prior art, and an alkoxy silane end capped polyether is provided, which can be used as a modifier for modifying the surface of quartz sand into a nonionic hydrophilic surface, so that the adhesion of the ageing polymer and the crude oil compound is effectively reduced, and meanwhile, the liquid yield of the oil-water well and the crude oil yield are maintained.
The second technical problem to be solved by the invention is to provide a preparation method of alkoxy silane end capped polyether.
The invention provides an anti-adsorption hydrophilic coating chemical agent, which comprises hydrolysate of the alkoxy silane end capped polyether. The chemical agent can be used for modifying the surface of quartz sand into a nonionic hydrophilic surface, so that the adhesion of an aging polymer and a crude oil compound is effectively reduced, and meanwhile, the liquid yield of an oil-water well and the crude oil yield are maintained.
The fourth technical problem to be solved by the invention is to provide a hydrophilic coating treatment liquid which comprises the alkoxysilane-terminated polyether and/or a hydrolysate thereof. The hydrophilic coating treatment liquid can be used for carrying out coating treatment on quartz sand so as to obtain a hydrophilic coating on the surface of the quartz sand; can effectively solve the problem that the ground surface is provided with a uniform hydrophilic coating of the alkoxy silane end capped polyether on the surface of the filling sand.
The fifth technical problem to be solved by the invention is to provide a preparation method of a hydrophilic coating treatment liquid corresponding to the fourth technical problem to be solved.
The sixth technical problem to be solved by the invention is to provide an application method of the hydrophilic coating treatment liquid corresponding to the fourth technical problem to be solved.
The seventh technical problem to be solved by the present invention is to provide another hydrophilic coating treatment liquid, which comprises the alkoxysilane-terminated polyether and/or its hydrolysis product. The hydrophilic coating treatment liquid can be used for carrying out soaking treatment on quartz sand to be treated, so that a hydrophilic coating is obtained on the surface of the quartz sand; in particular to the problem of preparing a uniform hydrophilic coating of alkoxy silane end capped polyether on the surface of the filling sand in situ under the ground.
The eighth technical problem to be solved by the invention is to provide a preparation method of a hydrophilic coating treatment liquid corresponding to the sixth technical problem to be solved.
The invention aims to provide a preparation method of a hydrophilic coating treatment liquid corresponding to the sixth technical problem.
The invention provides quartz sand for oil fields, which aims to solve the technical problem. The quartz sand for the oil field comprises the hydrophilic coating formed by the alkoxysilane-terminated polyether and/or the hydrolysate thereof, is used for filling sand of an oil-water well of the oil field, and effectively reduces adhesion of an aging polymer and a crude oil compound and simultaneously maintains liquid yield and crude oil yield of the oil-water well.
In order to solve one of the technical problems, the technical scheme adopted by the invention is as follows: alkoxysilane-terminated polyethers including any of the structures of the general molecular formula (1):
wherein R is H orR 1 、R 2 、R 3 R is as follows 4 Independently selected from hydrogen or C 1 ～C 6 Any of alkyl, cycloalkyl, alkenyl, or aryl groups; n is the addition number of the alkoxy group, and the value range of n is 0-30.
In the above technical solution, R is 1 、R 2 、R 3 R is as follows 4 Is selected from hydrogen or C 1 ～C 6 More independently selected from any of alkyl, cycloalkyl or aryl groups of (a) and (b) is preferably a hydrogen atom or C 1 ～C 6 Any of the alkyl groups of (a).
In the above technical solution, R is 4 Is selected from hydrogen or/and methyl; the value range of n is 1-30, when R 4 Where n is selected from hydrogen and methyl, n is the sum of the addition numbers of ethoxy and propoxy groups.
In the technical scheme, the alkoxy silane modified polyether is prepared by reacting allyl polyether with alkoxy silane under an acidic condition, wherein the molecular formulas (3) and (4) of the allyl polyether and the molecular formula (5) of the alkoxy silane are as follows:
in the above-mentioned embodiments, the value of n is in the range of 0 to 30, preferably 1 to 30, more preferably 1 to 10.
The preparation method of the alkoxy silane end capped polyether (1) or (2) comprises the following steps:
in step (a), it is preferable that: under the atmosphere of nitrogen, the allyl alcohol and the catalyst are subjected to an alkoxylation reaction with ethylene oxide and propylene oxide in sequence to obtain allyl polyether; the condition of the alkoxylation reaction is preferably that the temperature is 60-180 ℃ and the pressure is 0.05-10 MPa;
in step (b), it is preferable that: the acidic condition is obtained by regulating acetic acid; the temperature of the contact with the allyl polyether is 20-130 ℃, and the duration of the adding process is not less than 0.1-50 hours; the reaction temperature is not more than 130 ℃, and the constant temperature reaction is carried out for at least 0.5 to 60 hours at 20 to 130 ℃.
In the technical scheme, the alkoxysilane-terminated polyether can be coated with a hydrophilic coating on the surface of quartz sand by using a spraying, airing or injection/soaking method, and the hydrophilic coating can effectively reduce the adsorption of polyacrylamide, crude oil and the like.
In order to solve the second technical problem, the technical scheme adopted by the invention is as follows: the preparation method of the alkoxy silane end capped polyether solves one of the technical problems, and comprises the following steps:
(a) Preparation of allyl polyethers
Mixing allyl alcohol with catalyst under inert atmosphereCarrying out an alkoxylation reaction to obtain allyl polyether;
(b) Preparation of alkoxysilane-terminated polyethers
The allyl polyether is reacted with a catalyst and an alkoxysilane under acidic conditionsAnd (3) contacting and reacting to obtain the alkoxy silane end capped polyether.
In the above technical scheme, the allyl alcohol andthe molar ratio of (2) is preferably 1 (0) to (30), more preferably 1 (1) to (30), still more preferably 1 (1)～10)；R 4 Preferably H and/or methyl.
In the above technical scheme, the allyl polyether molecular general formulas (3) and (4) are as follows:
in the above technical solution, in step (a), it is preferable that: under the atmosphere of nitrogen, the allyl alcohol and the catalyst are subjected to an alkoxylation reaction with ethylene oxide and propylene oxide in sequence to obtain allyl polyether; the condition of the alkoxylation reaction is preferably that the temperature is 80-180 ℃ and the pressure is 0.05-10 MPa; in step (b), it is preferable that: the acidic condition is obtained by regulating acetic acid; the temperature of the contact with the allyl polyether is 20-120 ℃, and the duration of the adding process is not less than 0.1-50 hours; the reaction temperature is not more than 120 ℃, and the reaction is carried out for at least 1 to 60 hours at the constant temperature of 20 to 120 ℃.
In order to solve the third technical problem, the technical scheme adopted by the invention is as follows: a hydrophilic coating chemical agent comprising a hydrolysate of an alkoxysilane-terminated polyether as described in any one of the above technical solutions.
In the technical scheme, the chemical agent can be used for modifying the surface of quartz sand into a nonionic hydrophilic surface, so that the adhesion of an aging polymer and a crude oil compound is effectively reduced, and meanwhile, the liquid yield of an oil-water well and the crude oil yield are maintained.
In order to solve the fourth technical problem, the technical scheme adopted by the invention is as follows: a hydrophilic coating treatment fluid comprising the alkoxysilane-terminated polyether and/or hydrolysate thereof according to any one of the above-described aspects of one of the above-described aspects; the pH value of the treatment liquid is less than 7.
In the above technical solution, the pH is preferably less than 6.
In the above technical solution, it is further preferable that: the treatment fluid preferably comprises the following components in parts by mass: 0.01 to 30 parts of alkoxysilane-terminated polyether and/or hydrolysate thereof; 0.0001-1 part of acid; 20-100 parts of water; the more preferable scheme is as follows: the acid is preferably any one of sulfuric acid, hydrochloric acid, phosphoric acid, nitric acid, perchloric acid, hypochlorous acid, hydrobromic acid, hydroiodic acid, formic acid, acetic acid and n-propionic acid, more preferably any one of sulfuric acid, hydrochloric acid, phosphoric acid and nitric acid.
In order to solve the fifth technical problem, the technical scheme adopted by the invention is as follows: the preparation method of the hydrophilic coating treatment liquid for solving the fourth technical problem comprises the following steps:
and dissolving the acid into water, regulating the pH value of the water to be 0-4, and then adding the alkoxy silane end capped polyether to obtain the hydrophilic coating treatment liquid.
In order to solve the sixth technical problem, the technical scheme adopted by the invention is as follows: the application method of the hydrophilic coating treatment liquid according to any one of the fourth technical solutions for solving the technical problems includes the following steps: and (3) coating the silica sand to be treated with the hydrophilic coating treatment liquid with the mass percentage concentration of 0.01-10% by weight of the alkoxysilane-terminated polyether and/or the hydrolysate thereof.
In the above technical scheme, the temperature of hot air which can be adopted when the hot air is dried is 50-160 ℃, preferably 60-100 ℃.
In the above embodiments, the alkoxysilane-terminated polyether formulation may be present in a concentration of from 0.1 to 10% by weight, preferably from 0.15% to 5% by weight, and more preferably from 0.2 to 2% by weight.
In order to solve the seventh technical problem, the invention adopts the following technical scheme: the hydrophilic coating treatment fluid comprises the following components in parts by mass:
1) 0.01 to 30 parts of an alkoxysilane-terminated polyether and/or a hydrolysate thereof according to any one of the above-mentioned technical solutions;
2) 0.0001-1 part of acid,
3) 0-30 parts of inorganic salt;
4) 0-20 parts of organic acid salt;
5) 20-100 parts of water.
In the above technical solution, the pH value of the treatment solution is preferably less than 7; more preferably 6 or less; further preferably ph=0 to 6.
In the above embodiments, the acid is preferably any one of sulfuric acid, hydrochloric acid, phosphoric acid, nitric acid, perchloric acid, hypochlorous acid, hydrobromic acid, hydroiodic acid, formic acid, acetic acid and n-propionic acid, and more preferably at least one of hydrochloric acid, sulfuric acid, nitric acid, formic acid and acetic acid.
In the above technical solution, the inorganic salt is preferably any one of hydrochloride, sulfate, bisulfate, nitrate, phosphate, hydrogen phosphate, dihydrogen phosphate, bicarbonate and carbonate of alkali metal and/or alkaline earth metal; for example, at least one of an alkali metal salt, an alkali metal sulfate, an alkali metal hydrogen sulfate, an alkali metal nitrate, an alkali metal phosphate, an alkali metal hydrogen phosphate, an alkali metal dihydrogen phosphate, an alkali metal hydrogen carbonate, an alkali metal carbonate, an alkaline earth metal hydrochloride, an alkaline earth metal sulfate, an alkaline earth metal nitrate, an alkaline earth metal phosphate, an alkaline earth metal hydrogen phosphate, an alkaline earth metal dihydrogen phosphate, an alkaline earth metal hydrogen carbonate, and an alkaline earth metal carbonate is preferable.
In the above technical solution, the organic acid salt is preferably any one of carboxylate, organic borate, barbiturate, sulfonate and sulfate of alkali metal and/or alkaline earth metal; for example, at least one of alkali metal monocarboxylates, alkali metal citrates, alkali metal borates, alkali metal barbiturates, alkali metal sulfonates, alkali metal sulfate salts, alkali metal amino acid salts, alkaline earth metal monocarboxylates, alkaline earth metal citrates, alkaline earth metal borates, alkaline earth metal barbiturates, alkaline earth metal sulfonates, alkaline earth metal sulfate salts, and alkaline earth metal amino acid salts is preferable.
In order to solve the technical problem eight, the technical scheme adopted by the invention is as follows: the preparation method of the hydrophilic coating treatment liquid for solving the fourth technical problem comprises the following steps:
dissolving the acid into water, regulating the pH value of the water to be 0-3, then adding the alkoxy silane polyether, and after the alkoxy silane polyether is prehydrolyzed in an acidic aqueous solution, adding inorganic base, inorganic acid salt and organic acid which are correspondingly added; obtaining the hydrophilic coating treatment liquid.
In order to solve the technical problem, the technical scheme adopted by the invention is as follows: the application method of the hydrophilic coating treatment liquid in any one of the seventh technical proposal for solving the technical problems comprises the steps of coating the quartz sand to be treated with the hydrophilic coating treatment liquid with the mass percentage concentration of 0.05 to 30 percent by weight of the alkoxysilane-terminated polyether and/or the hydrolysate thereof; or injecting the hydrophilic coating treatment liquid with the mass percentage concentration of 0.05-30% by weight of the alkoxysilane-terminated polyether and/or the hydrolysate thereof into the position of the to-be-treated filling sand or stratum from an oil-water well, and then closing the well.
In the above-mentioned embodiments, the mass concentration of the hydrophilic coating treatment liquid is preferably 0.1 to 10% by weight, more preferably 0.15 to 5% by weight, and still more preferably 0.2 to 2% by weight.
In order to solve the ten technical problems, the technical scheme adopted by the invention is as follows: a quartz sand for oil field, comprising quartz sand and hydrophilic coating; wherein the hydrophilic coating contains the alkoxysilane-terminated polyether and/or the hydrolysate thereof according to any one of the technical schemes for solving the technical problems, or is prepared from the treatment liquid according to any one of the technical schemes for solving the fourth or seventh technical problems.
In the technical scheme, the mass ratio of the quartz sand to the hydrophilic coating is preferably between 0.0007:1 and 0.4:1.
According to the technical scheme, the quartz sand for the oil field comprises the hydrophilic coating formed by the alkoxysilane-terminated polyether and/or the hydrolysate thereof, and a person skilled in the art can be used for filling sand for an oil-water well of the oil field according to the prior art, so that the adhesion of an aging polymer and a crude oil compound is effectively reduced, and meanwhile, the liquid yield and the crude oil yield of the oil-water well are maintained.
The alkoxy silane end capped polyether can be used for preparing a nonpolar hydrophilic coating on the surface of quartz sand. The hydrophilic coating can effectively reduce the adsorption of polyacrylamide, can effectively maintain the production fluid of an oil well, relieves the problem of polymer blockage of the oil well, and has the advantages of cheap and easily available raw materials, simple synthesis process, low cost of a final product and the like; can be effectively applied to the surface treatment of the filling sand.
By adopting the technical scheme of the invention, the obtained alkoxy silane end capped polyether is used for preparing the nonpolar hydrophilic coating on the surface of quartz sand, so that the adsorption of polyacrylamide can be effectively reduced, the production fluid of an oil well can be effectively maintained, the problem of blocking of an oil well polymer is relieved, and meanwhile, the preparation method has the advantages of cheap and easily available raw materials, simple synthesis process, low cost of a final product and the like, and a better technical effect is achieved.
The invention is further illustrated by the following specific examples.
Detailed Description
[ example 1 ]
116.2 g of allyl alcohol and 20 g of catalyst are added into a reaction kettle, nitrogen substitution is carried out for three times, the temperature is raised to 130 ℃, 380 g of ethylene oxide is pressed in under the pressurizing condition, 503 g of propylene oxide is added after the reaction is finished, and the hydroxyl-terminated allyl polyoxyethylene (EO chain number=4.3) polyoxypropylene (PO chain number=4.3) ether intermediate is obtained after the reaction is finished. Removing volatile substances under reduced pressure, and cooling to room temperature. Adding 30 g of acetic acid into a reaction kettle to adjust the reaction liquid to be acidic, dissolving 0.5g of the reaction liquid into 5g of deionized water, measuring the pH value to be about 3-4 by using wide pH test paper, adding a platinum catalyst, heating to 70 ℃, stirring for 1 hour, and then slowly dropwise adding trimethoxysilane, wherein the temperature of the reaction liquid is controlled to be not more than 80 ℃ by controlling the dropwise adding rate. After the dripping is finished, the reaction can be ended after the temperature of the reaction solution is controlled to be 70-80 ℃ for two hours, and the temperature of the reaction solution is reduced to room temperature, and the discharging end of the reaction solution is hydroxy allyl polyoxyethylene (EO chain number=4.3) polyoxypropylene (PO chain number=4.3) ether modified trimethoxy silane.
To 50 g of deionized water, 25. Mu.l of concentrated sulfuric acid was added, and the mixture was stirred well, and 0.5g of a hydroxyl-terminated allyl polyoxyethylene (EO chain number=4.3) polyoxypropylene (PO chain number=4.3) ether-modified trimethoxysilane was added, and after dissolution by stirring, the mixture was stirred at room temperature for pre-hydrolysis for 2 hours. 100 g of 20-40 mesh quartz sand is added into a sugar coating pot, the sugar coating pot is rotated, the quartz sand is heated by hot air at 102 ℃, and the hydroxyl-terminated allyl polyoxyethylene (EO chain number=4.3) ether modified trimethoxysilane aqueous solution which is pre-hydrolyzed and polyoxypropylene (PO chain number=4.3) ether modified is slowly added dropwise. After the dripping is completed, the coating operation is completed.
The properties of the coated silica sand were determined: 20 g of the coated quartz sand sample together with 60 g of a 0.5% wt ZL-II aqueous solution were sealed in a 250ml clear blue-capped reagent bottle and placed in a constant temperature shaker at 45℃and shaken at 120 rpm. After 4 days of shaking, the change in polymer concentration before and after soaking in quartz sand was measured with TOC. Experimental data shows that the adsorption amount of the coated quartz sand on the polymer is reduced by more than 70 percent compared with that of uncoated quartz sand.
[ example 2 ]
116.2 g of allyl alcohol and 20 g of catalyst are added into a reaction kettle, nitrogen substitution is carried out for three times, the temperature is raised to 130 ℃, 883.8 g of ethylene oxide is pressed in under the pressurizing condition, and after the reaction is finished, the hydroxyl-terminated allyl polyoxyethylene (EO chain number=10.03) ether intermediate is obtained. Removing volatile substances under reduced pressure, and cooling to room temperature. Adding 30 g of acetic acid into a reaction kettle to adjust the reaction liquid to be acidic, dissolving 0.5g of the reaction liquid into 5g of deionized water, measuring the pH value to be about 3-4 by using wide pH test paper, adding a platinum catalyst, heating to 70 ℃, stirring for 1 hour, and then slowly dropwise adding trimethoxysilane, wherein the temperature of the reaction liquid is controlled to be not more than 80 ℃ by controlling the dropwise adding rate. After the dripping is finished, the reaction can be finished after the temperature of the reaction solution is controlled to be 70-80 ℃ for two hours, and the temperature of the reaction solution is reduced to room temperature and the hydroxyl polyoxyethylene (EO chain number=10.03) ether modified trimethoxysilane is discharged.
To 50 g of deionized water, 25. Mu.l of concentrated sulfuric acid was added, and the mixture was stirred well, and 0.5g of a hydroxyl-terminated polyoxyethylene (EO mer number=10.03) ether-modified trimethoxysilane was added, and after stirring dissolution, the mixture was stirred at room temperature for pre-hydrolysis for 2 hours. 100 g of 20-40 mesh quartz sand is added into a sugar coating pot, the sugar coating pot is rotated, the quartz sand is heated by hot air at 102 ℃, and the hydroxyl-terminated polyoxyethylene (EO chain number=10.03) ether modified trimethoxysilane aqueous solution which is pre-hydrolyzed is slowly dripped. After the dripping is completed, the coating operation is completed.
The properties of the coated silica sand were determined: 20 g of the coated quartz sand sample together with 60 g of a 0.5% wt ZL-II aqueous solution were sealed in a 250ml clear blue-capped reagent bottle and placed in a constant temperature shaker at 45℃and shaken at 120 rpm. After 4 days of shaking, the change in polymer concentration before and after soaking in quartz sand was measured with TOC. Experimental data shows that the adsorption amount of the coated quartz sand on the polymer is reduced by more than 80 percent compared with that of uncoated quartz sand.
[ example 3 ]
116.2 g of allyl alcohol and 20 g of catalyst are added into a reaction kettle, nitrogen substitution is carried out for three times, the temperature is raised to 130 ℃, 701.6 g of ethylene oxide is pressed in under the pressurizing condition, 182 g of propylene oxide is added after the reaction is finished, and the hydroxyl-terminated allyl polyoxyethylene (EO chain number=7.97) polyoxypropylene (PO chain number=2.07) ether intermediate is obtained after the reaction is finished. Removing volatile substances under reduced pressure, and cooling to room temperature. Adding 30 g of acetic acid into a reaction kettle to adjust the reaction liquid to be acidic, dissolving 0.5g of the reaction liquid into 5g of deionized water, measuring the pH value to be about 3-4 by using wide pH test paper, adding a platinum catalyst, heating to 70 ℃, stirring for 1 hour, and then slowly dropwise adding trimethoxysilane, wherein the temperature of the reaction liquid is controlled to be not more than 80 ℃ by controlling the dropwise adding rate. After the completion of the dropwise addition, the reaction can be ended after controlling the temperature of the reaction solution to 70-80 ℃ for two hours, and the temperature of the reaction solution is reduced to room temperature and the discharging end of the hydroxyl allyl polyoxyethylene (EO chain number=7.97) polyoxypropylene (PO chain number=2.07) ether modified trimethoxy silane.
To 50 g of deionized water, 25. Mu.l of concentrated sulfuric acid was added, and the mixture was stirred well, and 0.5g of a hydroxyl-terminated allyl polyoxyethylene (EO chain number=7.97) polyoxypropylene (PO chain number=2.07) ether-modified trimethoxysilane was added, and after dissolution by stirring, the mixture was stirred at room temperature for pre-hydrolysis for 2 hours. 100 g of 20-40 mesh quartz sand is added into a sugar coating pot, the sugar coating pot is rotated, the quartz sand is heated by hot air at 102 ℃, and the hydroxyl-terminated allyl polyoxyethylene (EO chain number=7.97) polyoxypropylene (PO chain number=2.07) ether modified trimethoxysilane aqueous solution which is pre-hydrolyzed is slowly dripped. After the dripping is completed, the coating operation is completed.
The properties of the coated silica sand were determined: 20 g of the coated quartz sand sample together with 60 g of a 0.5% wt ZL-II aqueous solution were sealed in a 250ml clear blue-capped reagent bottle and placed in a constant temperature shaker at 45℃and shaken at 120 rpm. After 4 days of shaking, the change in polymer concentration before and after soaking in quartz sand was measured with TOC. Experimental data shows that the adsorption amount of the coated quartz sand on the polymer is reduced by more than 65% compared with that of uncoated quartz sand.
[ example 4 ]
116.2 g of allyl alcohol and 20 g of catalyst are added into a reaction kettle, nitrogen substitution is carried out for three times, the temperature is raised to 130 ℃, 883.8 g of ethylene oxide is pressed in under the pressurizing condition, and after the reaction is finished, the hydroxyl-terminated allyl polyoxyethylene (EO chain number=10.04) ether intermediate is obtained. Removing volatile substances under reduced pressure, and cooling to room temperature. Adding 30 g of acetic acid into a reaction kettle to adjust the reaction liquid to be acidic, dissolving 0.5g of the reaction liquid into 5g of deionized water, measuring the pH value to be about 3-4 by using wide pH test paper, adding a platinum catalyst, heating to 70 ℃, stirring for 1 hour, and then slowly dropwise adding trimethoxysilane, wherein the temperature of the reaction liquid is controlled to be not more than 80 ℃ by controlling the dropwise adding rate. After the dripping is finished, the reaction can be finished after the temperature of the reaction solution is controlled to be 70-80 ℃ for two hours, and the temperature of the reaction solution is reduced to room temperature, and the hydroxyl allyl polyoxyethylene (EO chain number=10.04) ether modified trimethoxy silane is discharged at the discharging end.
To 50 g of deionized water, 25. Mu.l of concentrated sulfuric acid was added, and the mixture was stirred uniformly, and 0.5g of a hydroxyl-terminated allyl polyoxyethylene (EO number of links=10.04) ether-modified trimethoxysilane was added, and after dissolution by stirring, the mixture was stirred at room temperature for pre-hydrolysis for 2 hours. 100 g of 20-40 mesh quartz sand is added into a sugar coating pot, the sugar coating pot is rotated, the quartz sand is heated by hot air at 102 ℃, and the hydroxyl-terminated allyl polyoxyethylene (EO chain number=10.04) ether modified trimethoxysilane aqueous solution which is pre-hydrolyzed is slowly dripped. After the dripping is completed, the coating operation is completed.
The properties of the coated silica sand were determined: a20 g sample of coated quartz sand was placed in a 250ml clear blue-capped reagent bottle with 60 g of 0.5% wt ZL-II aqueous solution (5000 ppm NaCl added to the aqueous solvent) and sealed and placed in a 45℃constant temperature shaker at 120 rpm. After 4 days of shaking, the change in polymer concentration before and after soaking in quartz sand was measured with TOC. Experimental data shows that the adsorption amount of the coated quartz sand on the polymer is reduced by more than 85% compared with that of uncoated quartz sand.
[ example 5 ]
116.2 g of allyl alcohol and 20 g of catalyst are added into a reaction kettle, nitrogen substitution is carried out for three times, the temperature is raised to 130 ℃, 883.8 g of ethylene oxide is pressed in under the pressurizing condition, and after the reaction is finished, the hydroxyl-terminated allyl polyoxyethylene (EO chain number=10.04) ether intermediate is obtained. Removing volatile substances under reduced pressure, and cooling to room temperature. Adding 30 g of acetic acid into a reaction kettle to adjust the reaction liquid to be acidic, dissolving 0.5g of the reaction liquid into 5g of deionized water, measuring the pH value to be about 3-4 by using wide pH test paper, adding a platinum catalyst, heating to 70 ℃, stirring for 1 hour, and then slowly dropwise adding triethoxysilane, wherein the temperature of the reaction liquid is controlled to be not more than 80 ℃ by controlling the dropwise adding rate. After the completion of the dropwise addition, the reaction can be ended after controlling the temperature of the reaction solution to 70-80 ℃ for two hours, and the temperature of the reaction solution is reduced to room temperature and the discharging end of the hydroxyl allyl polyoxyethylene (EO chain number=10.04) ether modified triethoxysilane.
To 50 g of deionized water, 25. Mu.l of concentrated sulfuric acid was added, and the mixture was stirred well, and 0.5g of a hydroxyl-terminated allyl polyoxyethylene (EO number of links=10.04) ether-modified triethoxysilane was added, and after stirring dissolution, the mixture was stirred at room temperature for pre-hydrolysis for 2 hours. 100 g of 20-40 mesh quartz sand is added into a sugar coating pot, the sugar coating pot is rotated, the quartz sand is heated by hot air at 102 ℃, and the pre-hydrolyzed hydroxyl-terminated allyl polyoxyethylene (EO chain number=10.04) ether modified triethoxysilane aqueous solution is slowly added dropwise. After the dripping is completed, the coating operation is completed.
The properties of the coated silica sand were determined: a20 g sample of coated quartz sand was placed in a 250ml clear blue-capped reagent bottle with 60 g of 0.5% wt ZL-II aqueous solution (30000 ppm NaCl and 2771ppm CaCl2 added to the aqueous solvent) and sealed and placed in a 45℃constant temperature shaker at 120 rpm. After 4 days of shaking, the change in polymer concentration before and after soaking in quartz sand was measured with TOC. Experimental data shows that the adsorption amount of the coated quartz sand on the polymer is reduced by more than 85% compared with that of uncoated quartz sand.
[ example 6 ]
116.2 g of allyl alcohol and 20 g of catalyst are added into a reaction kettle, nitrogen substitution is carried out for three times, the temperature is raised to 130 ℃, 883.8 g of ethylene oxide is pressed in under the pressurizing condition, and after the reaction is finished, the hydroxyl-terminated allyl polyoxyethylene (EO chain number=10.04) ether intermediate is obtained. Removing volatile substances under reduced pressure, and cooling to room temperature. Adding 30 g of acetic acid into a reaction kettle to adjust the reaction liquid to be acidic, dissolving 0.5g of the reaction liquid into 5g of deionized water, measuring the pH value to be about 3-4 by using wide pH test paper, adding a platinum catalyst, heating to 70 ℃, stirring for 1 hour, and then slowly dropwise adding tributoxy silane, wherein the temperature of the reaction liquid is controlled to be not more than 80 ℃ by controlling the dropwise adding rate. After the completion of the dropwise addition, the reaction can be ended after controlling the temperature of the reaction solution at 70-80 ℃ for two hours, and the temperature of the reaction solution is reduced to room temperature and the discharging end of the hydroxyl allyl polyoxyethylene (EO chain number=10.04) ether modified tributoxy silane.
To 50 g of deionized water, 25. Mu.l of concentrated sulfuric acid was added, and the mixture was stirred well, and 0.5g of a hydroxyl-terminated allyl polyoxyethylene (EO number of links=10.04) ether-modified tributoxy silane was added, and after dissolution by stirring, the mixture was subjected to prehydrolysis by stirring at room temperature for 2 hours. 100 g of 20-40 mesh quartz sand was added to a sugar coating pan, the sugar coating pan was rotated and the quartz sand was heated with hot air at 102 ℃, and an aqueous solution of hydroxyl-terminated allyl polyoxyethylene (EO link number=10.04) ether-modified tributoxy silane which had been pre-hydrolyzed was slowly dropped. After the dripping is completed, the coating operation is completed.
The properties of the coated silica sand were determined: 20 g of the coated quartz sand sample was combined with 60 g of a 0.5% wt ZL-II aqueous solution (500 ppm NaCl and 2771ppm CaCl were added to the aqueous solvent) 2 ) Put together in 250ml transparent blue cap reagent bottles, sealed and then put in a constant temperature shaker at 45 ℃ to shake at 120 rpm. After 4 days of shaking, the change in polymer concentration before and after soaking in quartz sand was measured with TOC. Experimental data shows that the adsorption amount of the coated quartz sand on the polymer is reduced by more than 85% compared with that of uncoated quartz sand.
[ example 7 ]
116.2 g of allyl alcohol and 20 g of catalyst are added into a reaction kettle, nitrogen substitution is carried out for three times, the temperature is raised to 130 ℃, 767.88 g of ethylene oxide is pressed in under the condition of pressurization, the temperature is reduced to 65 ℃ after the reaction is finished, 200 g of granular sodium hydroxide is added, 170 g of allyl chloride is dropwise added in the process of slowly stirring, and the reaction is finished after about 4 hours. The reaction solution is cooled to normal temperature, added into 2000 ml of absolute ethyl alcohol, added with acetic acid to adjust to acidity, filtered to remove precipitated inorganic salt, and distilled to remove the alcohol. Transferring the polyether intermediate into a reaction kettle, adding 30 g of acetic acid into the reaction kettle to adjust the reaction liquid to be acidic, taking 0.5g of the reaction liquid to be dissolved into 5g of deionized water, measuring the pH value to be about 3-4 by using wide pH test paper, adding a platinum catalyst, heating to 70 ℃, stirring for 1 hour, then starting to slowly dropwise add trimethoxysilane, and controlling the temperature of the reaction liquid to be not more than 80 ℃ by controlling the dropwise adding rate. After the dripping is finished, the reaction can be ended after the temperature of the reaction solution is controlled to be 70-80 ℃ for two hours, and the temperature of the reaction solution is reduced to room temperature to discharge trimethoxy-3- [3' - (trimethoxysilyl) propyl ] polyoxyethylene (EO chain number=4.36) ether group ] propyl silane
To 50 g of deionized water, 25. Mu.l of concentrated sulfuric acid was added, and the mixture was stirred well, and 0.5g of trimethoxy-3- [3' - (trimethoxysilyl) propyl ] polyoxyethylene (EO number of links=4.36) ether-based ] propylsilane was added, and after dissolution by stirring, the mixture was subjected to prehydrolysis by stirring at room temperature for 2 hours. 100 g of 20-40 mesh quartz sand is added into a sugar coating pot, the sugar coating pot is rotated, the quartz sand is heated by hot air at 102 ℃, and the trimethoxy-3- [3' - (trimethoxysilyl) propyl ] polyoxyethylene (EO link number=4.36) ether group ] propyl silane aqueous solution which is pre-hydrolyzed is slowly added dropwise. After the dripping is completed, the coating operation is completed.
The properties of the coated silica sand were determined: a20 g sample of coated quartz sand was placed in a 250ml clear blue-capped reagent bottle with 60 g of 0.5% wt ZL-II aqueous solution (30000 ppm NaCl and 2771ppm CaCl2 added to the aqueous solvent) and sealed and placed in a 45℃constant temperature shaker at 120 rpm. After 4 days of shaking, the change in polymer concentration before and after soaking in quartz sand was measured with TOC. Experimental data shows that the adsorption amount of the coated quartz sand on the polymer is reduced by more than 65% compared with that of uncoated quartz sand.
[ example 8 ]
116.2 g of allyl alcohol and 20 g of catalyst are added into a reaction kettle, nitrogen substitution is carried out for three times, the temperature is raised to 130 ℃, 380 g of ethylene oxide is pressed in under the pressurizing condition, 503 g of propylene oxide is added after the reaction is finished, and the hydroxyl-terminated allyl polyoxyethylene (EO chain number=4.32) polyoxypropylene (PO chain number=4.32) ether intermediate is obtained after the reaction is finished. Removing volatile substances under reduced pressure, and cooling to room temperature. Then adding 30 g of acetic acid into a reaction kettle to adjust the reaction liquid to be acidic, dissolving 0.5g of the reaction liquid into 5g of deionized water, measuring the pH to be about 3-4 by using wide pH test paper, adding a platinum catalyst, heating to 70 ℃, stirring for 1 hour, and then slowly dropwise adding trimethoxysilane, wherein the temperature of the reaction liquid is controlled to be not more than 80 ℃ by controlling the dropwise adding rate. After the completion of the dropwise addition, the reaction can be ended after controlling the temperature of the reaction solution to 70-80 ℃ for two hours, and the temperature of the reaction solution is reduced to room temperature and the discharging end of the hydroxyl allylpolyoxyethylene (EO chain number=4.32) polyoxypropylene (PO chain number=4.32) ether modified trimethoxysilane.
To 40 g of deionized water, 25. Mu.l of concentrated sulfuric acid was added, and the mixture was stirred uniformly, 0.5 g of a hydroxyl-terminated allyl polyoxyethylene (EO chain number=4.32) polyoxypropylene (PO chain number=4.32) ether-modified trimethoxysilane was added, and after stirring and dissolution, the mixture was stirred at room temperature for prehydrolysis for 2 hours, 3.73 ml of 1% wt sodium hydroxide was added, and then 6.27 g of a mixed solution of disodium hydrogen phosphate and citric acid (containing 0.258 g of disodium hydrogen phosphate, and 0.229 g of citric acid monohydrate) was added, and the mixture was stirred uniformly. The 20-40 mesh quartz sand is filled into a 1 foot glass sand filling pipe, and then the glass sand filling pipe is arranged in a displacement device and is placed in an environment of 60 ℃. And (3) saturating the sand filling pipe with deionized water, displacing the deionized water in the sand filling pipe with the prepared treatment liquid, closing the front and rear switches of the sand filling pipe, and storing at 60 ℃ for 48 hours to finish the coating operation.
The properties of the coated silica sand were determined: the temperature of the displacement apparatus was lowered to 45 ℃, the sand-filled tube was displaced with 0.5% wt ZL-II aqueous solution, the liquid was accepted by a centrifuge tube, and the dynamic adsorption behavior of the polymer on the coated quartz sand was determined. Experimental data shows that the dynamic adsorption quantity of the coated quartz sand to the polymer is reduced by more than 50% compared with that of uncoated quartz sand.
[ example 9 ]
116.2 g allyl alcohol and 20 g catalyst are added into a reaction kettle, nitrogen substitution is carried out for three times, the temperature is raised to 130 ℃, 910 g of ethylene oxide is pressed in under the pressurizing condition, and the hydroxyl-terminated allyl polyoxyethylene (EO chain number=10.34) ether intermediate is obtained after the reaction is finished. Removing volatile substances under reduced pressure, and cooling to room temperature. Then adding 30 g of acetic acid into a reaction kettle to adjust the reaction liquid to be acidic, dissolving 0.5g of the reaction liquid into 5g of deionized water, measuring the pH to be about 3-4 by using wide pH test paper, adding a platinum catalyst, heating to 70 ℃, stirring for 1 hour, and then slowly dropwise adding trimethoxysilane, wherein the temperature of the reaction liquid is controlled to be not more than 80 ℃ by controlling the dropwise adding rate. After the dripping is finished, the reaction can be finished after the temperature of the reaction solution is controlled to be 70-80 ℃ for two hours, and the temperature of the reaction solution is reduced to room temperature, and the hydroxyl allyl polyoxyethylene (EO chain number=10.34) ether modified trimethoxy silane is discharged at the end.
To 40 g of deionized water, 25. Mu.l of concentrated sulfuric acid was added, and the mixture was stirred uniformly, 0.5g of hydroxyl-terminated allyl polyoxyethylene (EO number of links=10.34) ether-modified trimethoxysilane was added, and after stirring and dissolution, the mixture was stirred at room temperature for pre-hydrolysis for 2 hours, 3.73 ml of 1% by weight sodium hydroxide was added, and then 6.27 g of a mixed solution of disodium hydrogen phosphate and citric acid (containing 0.258 g of disodium hydrogen phosphate and 0.229 g of citric acid monohydrate) was added, and the mixture was stirred uniformly. The 20-40 mesh quartz sand is filled into a 1 foot glass sand filling pipe, and then the glass sand filling pipe is arranged in a displacement device and is placed in an environment of 60 ℃. And (3) saturating the sand filling pipe with deionized water, displacing the deionized water in the sand filling pipe with the prepared treatment liquid, closing the front and rear switches of the sand filling pipe, and storing at 60 ℃ for 48 hours to finish the coating operation.
The properties of the coated silica sand were determined: the temperature of the displacement apparatus was lowered to 45 ℃, the sand-filled tube was displaced with 0.5% wt ZL-II aqueous solution, the liquid was accepted by a centrifuge tube, and the dynamic adsorption behavior of the polymer on the coated quartz sand was determined. Experimental data shows that the dynamic adsorption quantity of the coated quartz sand to the polymer is reduced by more than 90 percent compared with that of uncoated quartz sand.
[ example 10 ]
116.2 g of allyl alcohol and 20 g of catalyst are added into a reaction kettle, nitrogen substitution is carried out for three times, the temperature is raised to 130 ℃, 701.6 g of ethylene oxide is pressed in under the pressurizing condition, and 182 g of propylene oxide is added after the reaction is finished. Removing volatile substances under reduced pressure, and cooling to room temperature. Then adding 30 g of acetic acid into a reaction kettle to adjust the reaction liquid to be acidic, dissolving 0.5g of the reaction liquid into 5g of deionized water, measuring the pH to be about 3-4 by using wide pH test paper, adding a platinum catalyst, heating to 70 ℃, stirring for 1 hour, and then starting to slowly dropwise add tributoxy silane, wherein the temperature of the reaction liquid is controlled to be not more than 80 ℃ by controlling the dropwise adding rate. After the completion of the dropwise addition, the reaction can be ended after controlling the temperature of the reaction solution to 70-80 ℃ for two hours, and the temperature of the reaction solution is reduced to room temperature to discharge trimethoxy-3- [3' - (trimethoxysilyl) propyl ] polyoxyethylene (EO chain number=7.97) polyoxypropylene (PO chain number=1.57) ether group ] propyl silane.
To 40 g of deionized water, 25. Mu.l of concentrated sulfuric acid was added, and the mixture was stirred uniformly, 0.5 g of trimethoxy-3- [3' - (trimethoxysilyl) propyl ] polyoxyethylene (EO number of links=7.97) polyoxypropylene (PO number of links=1.57) ether group ] propylsilane was added, and after stirring and dissolution, the mixture was stirred at room temperature for prehydrolysis for 2 hours, 3.73 ml of 1% by weight sodium hydroxide was added, and then 6.27 g of a mixed solution of disodium hydrogen phosphate and citric acid (containing 0.258 g of disodium hydrogen phosphate, 0.229 g of citric acid monohydrate) was added, and the mixture was stirred uniformly. The 20-40 mesh quartz sand is filled into a 1 foot glass sand filling pipe, and then the glass sand filling pipe is arranged in a displacement device and is placed in an environment of 60 ℃. And (3) saturating the sand filling pipe with deionized water, displacing the deionized water in the sand filling pipe with the prepared treatment liquid, closing the front and rear switches of the sand filling pipe, and storing at 60 ℃ for 48 hours to finish the coating operation.
The properties of the coated silica sand were determined: the temperature of the displacement apparatus was lowered to 45 ℃, the sand-filled tube was displaced with 0.5% wt ZL-II aqueous solution, the liquid was accepted by a centrifuge tube, and the dynamic adsorption behavior of the polymer on the coated quartz sand was determined. Experimental data shows that the dynamic adsorption quantity of the coated quartz sand to the polymer is reduced by more than 75 percent compared with that of uncoated quartz sand.
[ example 11 ]
116.2 g allyl alcohol and 20 g catalyst are added into a reaction kettle, nitrogen substitution is carried out for three times, the temperature is raised to 130 ℃, 701.6 g of ethylene oxide is pressed in under the pressurizing condition, and 233 g of propylene oxide is added after the reaction is finished. Removing volatile substances under reduced pressure, and cooling to room temperature. Then 1000 ml of methyl tertiary butyl ether is added, the mixture is stirred uniformly, 362.4 g of allyl bromide grignard reagent is added dropwise, water is slowly added to stop the reaction after the reaction is carried out for 24 hours at the temperature of 0 ℃, the solid in the reaction liquid is filtered and removed, and then the methyl tertiary butyl ether in the reaction liquid is removed by reduced pressure rotary evaporation. Transferring the product into a reaction kettle, adding 30 g of acetic acid into the reaction kettle to adjust the reaction liquid to be acidic, dissolving 0.5g of the reaction liquid into 5g of deionized water, measuring the pH value to be about 3-4 by using wide pH test paper, adding a platinum catalyst, heating to 70 ℃, stirring for 1 hour, and then starting to slowly dropwise add trimethoxysilane, wherein the temperature of the reaction liquid is controlled to be not more than 80 ℃ by controlling the dropwise adding rate. After the completion of the dropwise addition, the reaction was terminated after controlling the temperature of the reaction solution at 70℃to 80℃for two hours, and the temperature of the reaction solution was lowered to room temperature to discharge tributoxy-3- [3' - (tributoxysilyl) propyl ] polyoxyethylene (EO chain number=7.97) polyoxypropylene (PO chain number=2) ether group ] propyl silane.
To 40 g of deionized water, 25. Mu.l of concentrated sulfuric acid was added, and the mixture was stirred uniformly, 0.5 g of tributoxy-3- [3' - (tributoxysilyl) propyl ] polyoxyethylene (EO chain number=7.97) polyoxypropylene (PO chain number=2) ether group ] propylsilane was added, and after stirring and dissolution, the mixture was stirred at room temperature for prehydrolysis for 2 hours, 3.73 ml of 1% wt sodium hydroxide was added, and then 6.27 g of a mixed solution of disodium hydrogen phosphate and citric acid (containing 0.258 g of disodium hydrogen phosphate, 0.229 g of citric acid monohydrate) was added, and the mixture was stirred uniformly. The 20-40 mesh quartz sand is filled into a 1 foot glass sand filling pipe, and then the glass sand filling pipe is arranged in a displacement device and is placed in an environment of 60 ℃. And (3) saturating the sand filling pipe with deionized water, displacing the deionized water in the sand filling pipe with the prepared treatment liquid, closing the front and rear switches of the sand filling pipe, and storing at 60 ℃ for 48 hours to finish the coating operation.
The properties of the coated silica sand were determined: the temperature of the displacement apparatus was lowered to 45 ℃, the sand-filled tube was displaced with 0.5% wt ZL-II aqueous solution, the liquid was accepted by a centrifuge tube, and the dynamic adsorption behavior of the polymer on the coated quartz sand was determined. Experimental data shows that the dynamic adsorption quantity of the coated quartz sand to the polymer is reduced by more than 70 percent compared with that of uncoated quartz sand.
TABLE 1 chemical structures of alkoxysilane-terminated polyethers in examples 1 to 11
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Claims (41)
1. A hydrophilic coating chemistry comprising a hydrolysate of an alkoxysilane-terminated polyether;
alkoxysilane-terminated polyethers including any of the structures of the general molecular formula (1):
wherein R is H orR 1 、R 2 、R 3 R is as follows 4 Independently selected from hydrogen or C 1 ～C 6 Any of alkyl, cycloalkyl, alkenyl, or aryl groups; n is an addition number, and the value range of n is 0-30.
2. The hydrophilic coating chemistry of claim 1, wherein:
the R is 1 、R 2 、R 3 R is as follows 4 Selected from hydrogen or C 1 ～C 6 Any of alkyl, cycloalkyl or aryl groups.
3. The hydrophilic coating chemistry of claim 2, wherein:
the R is 1 、R 2 、R 3 R is as follows 4 Selected from hydrogen or C 1 ～C 6 Any of the alkyl groups of (a).
4. The hydrophilic coating chemistry of claim 1, wherein R 4 Is selected from hydrogen or/and methyl; the value range of n is 1-30.
5. The hydrophilic coating chemistry of any one of claims 1 to 4, wherein the preparation method of the alkoxysilane-terminated polyether comprises the steps of:
(a) Preparation of allyl polyethers
Mixing allyl alcohol with catalyst under inert atmosphere Carrying out an alkoxylation reaction to obtain allyl polyether;
(b) Preparation of alkoxysilane-terminated polyethers
The allyl polyether is reacted with a catalyst and an alkoxysilane under acidic conditionsAnd (3) contacting and reacting to obtain the alkoxy silane end capped polyether.
6. A hydrophilic coating chemistry according to claim 5, wherein,
in step (a): under the atmosphere of nitrogen, the allyl alcohol and the catalyst are subjected to an alkoxylation reaction with ethylene oxide and propylene oxide in sequence to obtain allyl polyether;
in step (b): the acidic condition is obtained by regulating acetic acid; the temperature of the contact with the allyl polyether is 20-120 ℃, and the duration of the adding process is not less than 0.1-50 hours; the reaction temperature is not more than 120 ℃, and the reaction is carried out for at least 1 to 60 hours at the constant temperature of 20 to 120 ℃.
7. A hydrophilic coating chemistry according to claim 6, wherein,
in step (a): the alkoxylation reaction conditions are that the temperature is 80-180 ℃ and the pressure is 0.05-10 MPa.
8. A hydrophilic coating chemistry according to claim 5, wherein,
the allyl alcoholThe molar ratio of (2) is 1 (0-30).
9. A hydrophilic coating chemistry according to claim 8, wherein,
The allyl alcoholThe molar ratio of (2) is 1 (1) to (30).
10. A hydrophilic coating chemistry according to claim 9, wherein,
the allyl alcoholThe molar ratio of (2) is 1 (1) to (10).
11. A hydrophilic coating treatment fluid comprising an alkoxysilane-terminated polyether and/or a hydrolysate thereof; the pH value of the treatment liquid is less than 7;
alkoxysilane-terminated polyethers including any of the structures of the general molecular formula (1):
wherein R is H orR 1 、R 2 、R 3 R is as follows 4 Independently selected from hydrogen or C 1 ～C 6 Any of alkyl, cycloalkyl, alkenyl, or aryl groups; n is an addition number, and the value range of n is 0-30.
12. The hydrophilic coating treatment fluid according to claim 11, wherein:
the R is 1 、R 2 、R 3 R is as follows 4 Selected from hydrogen or C 1 ～C 6 Any of alkyl, cycloalkyl or aryl groups.
13. The hydrophilic coating treatment fluid according to claim 12, wherein:
the R is 1 、R 2 、R 3 R is as follows 4 Selected from hydrogen or C 1 ～C 6 Any of the alkyl groups of (a).
14. The hydrophilic coating treatment fluid of claim 11, wherein R is 4 Is selected from hydrogen or/and methyl; the value range of n is 1-30.
15. The hydrophilic coating treatment fluid according to any one of claims 11-14, wherein the preparation method of the alkoxysilane-terminated polyether comprises the steps of:
(a) Preparation of allyl polyethers
Mixing allyl alcohol with catalyst under inert atmosphereCarrying out an alkoxylation reaction to obtain allyl polyether;
(b) Preparation of alkoxysilane-terminated polyethers
The allyl polyether is reacted with a catalyst and an alkoxysilane under acidic conditionsAnd (3) contacting and reacting to obtain the alkoxy silane end capped polyether.
16. The hydrophilic coating treatment fluid according to claim 15, wherein,
in step (a): under the atmosphere of nitrogen, the allyl alcohol and the catalyst are subjected to an alkoxylation reaction with ethylene oxide and propylene oxide in sequence to obtain allyl polyether;
in step (b): the acidic condition is obtained by regulating acetic acid; the temperature of the contact with the allyl polyether is 20-120 ℃, and the duration of the adding process is not less than 0.1-50 hours; the reaction temperature is not more than 120 ℃, and the reaction is carried out for at least 1 to 60 hours at the constant temperature of 20 to 120 ℃.
17. The hydrophilic coating treatment fluid of claim 16, wherein the hydrophilic coating treatment fluid comprises,
in step (a): the alkoxylation reaction conditions are that the temperature is 80-180 ℃ and the pressure is 0.05-10 MPa.
18. The hydrophilic coating treatment fluid according to claim 15, wherein,
the allyl alcohol The molar ratio of (2) is 1 (0-30).
19. The hydrophilic coating treatment fluid of claim 18, wherein the hydrophilic coating treatment fluid comprises,
the allyl alcoholThe molar ratio of (2) is 1 (1) to (30).
20. The hydrophilic coating treatment fluid of claim 19, wherein the hydrophilic coating treatment fluid comprises,
the allyl alcoholThe molar ratio of (2) is 1 (1) to (10).
21. The hydrophilic coating treatment fluid of claim 11, wherein the pH is less than 6.
22. The hydrophilic coating treatment fluid according to claim 21, wherein the treatment fluid comprises the following components in parts by mass: 0.01 to 30 parts of alkoxysilane-terminated polyether and/or hydrolysate thereof; 0.0001-1 part of acid; 20-100 parts of water.
23. The hydrophilic coating treatment fluid of claim 22, wherein the hydrophilic coating treatment fluid comprises,
the acid is any one of sulfuric acid, hydrochloric acid, phosphoric acid, nitric acid, perchloric acid, hypochlorous acid, hydrobromic acid, hydroiodic acid, formic acid, acetic acid and n-propionic acid.
24. The hydrophilic coating treatment liquid according to claim 11, comprising the following components in parts by mass:
1) 0.01 to 30 parts of alkoxysilane-terminated polyether and/or hydrolysate thereof;
2) 0.0001-1 part of acid,
3) 0-30 parts of inorganic salt;
4) 0-20 parts of organic acid salt;
5) 20-100 parts of water.
25. The hydrophilic coating treatment fluid of claim 24, wherein the acid is any one of sulfuric acid, hydrochloric acid, phosphoric acid, nitric acid, perchloric acid, hypochlorous acid, hydrobromic acid, hydroiodic acid, formic acid, acetic acid, and n-propionic acid;
the inorganic salt is any one of hydrochloride, sulfate, bisulfate, nitrate, phosphate, hydrogen phosphate, dihydrogen phosphate, bicarbonate and carbonate of alkali metal and/or alkaline earth metal;
the organic acid salt is any one of carboxylate, organic borate, barbiturate, sulfonate and sulfate of alkali metal and/or alkaline earth metal.
26. The hydrophilic coating treatment fluid of claim 25, wherein the acid is at least one of hydrochloric acid, sulfuric acid, nitric acid, formic acid, and acetic acid.
27. The hydrophilic coating treatment fluid of claim 24, wherein the hydrophilic coating treatment fluid comprises,
the pH value of the treatment liquid is less than or equal to 6.
28. The hydrophilic coating treatment fluid of claim 27, wherein the hydrophilic coating treatment fluid,
the pH value of the treatment liquid=0 to 6.
29. The method for preparing a hydrophilic coating treatment liquid according to any one of claims 21 to 23, comprising the steps of:
Dissolving acid into water, regulating the pH value of the water to be 0-4, and then adding the alkoxy silane end capped polyether to obtain the hydrophilic coating treatment liquid.
30. A method for preparing the hydrophilic coating treatment liquid according to any one of claims 24 to 26, comprising the steps of:
dissolving acid into water, regulating the pH value of the water to be 0-3, adding the alkoxy silane polyether, and adding corresponding inorganic base, inorganic acid salt and organic acid after the alkoxy silane polyether is prehydrolyzed in an acidic aqueous solution to obtain the hydrophilic coating treatment solution.
31. A method for applying a hydrophilic coating treatment fluid, comprising the steps of: coating the quartz sand to be treated with a hydrophilic coating treatment solution with the mass percentage concentration of 0.01-10% by weight of the alkoxysilane-terminated polyether and/or hydrolysate thereof;
wherein the hydrophilic coating treatment liquid is the hydrophilic coating treatment liquid according to any one of claims 11 to 14 or 21 to 23 or the hydrophilic coating treatment liquid prepared by the preparation method according to claim 29.
32. The method for applying a hydrophilic coating treatment liquid according to claim 31, wherein,
The concentration of the alkoxysilane-terminated polyether is between 0.1 and 10 wt%.
33. The method of claim 32, wherein the alkoxysilane-terminated polyether is formulated at a concentration of 0.15wt% to 5wt%.
34. The method of claim 33, wherein the alkoxysilane-terminated polyether is formulated at a concentration of 0.2 to 2 wt.%.
35. The application method of the hydrophilic coating treatment liquid comprises the steps of coating the quartz sand to be treated with the hydrophilic coating treatment liquid with the mass percentage concentration of 0.05-30% by weight of alkoxysilane-terminated polyether and/or hydrolysate thereof; or injecting the hydrophilic coating treatment liquid with the mass percentage concentration of 0.05-30% by weight of the alkoxysilane-terminated polyether and/or the hydrolysate thereof from an oil-water well to the position of the to-be-treated filled sand or stratum, and then closing the well;
wherein the hydrophilic coating treatment liquid is the hydrophilic coating treatment liquid according to claims 24 to 26 or the hydrophilic coating treatment liquid prepared by the preparation method according to claim 30.
36. The method for applying a hydrophilic coating treatment liquid according to claim 35, wherein,
the mass concentration of the hydrophilic coating treatment liquid is between 0.1 and 10 weight percent.
37. The method for applying a hydrophilic coating treatment liquid according to claim 36, wherein,
the mass concentration of the hydrophilic coating treatment liquid is 0.15-5 wt%.
38. The method for applying a hydrophilic coating treatment liquid according to claim 37, wherein,
the mass concentration of the hydrophilic coating treatment liquid is 0.2-2 wt%.
39. A quartz sand for oil field, comprising quartz sand and hydrophilic coating; wherein the hydrophilic coating comprises an alkoxysilane-terminated polyether and/or a hydrolysate thereof, or is prepared from the hydrophilic coating chemistry of claim 1 or from the treatment fluid of any one of claims 21-23;
wherein the alkoxy silane end capped polyether comprises any one of structures shown in a general molecular formula (1):
wherein R is H orR 1 、R 2 、R 3 R is as follows 4 Independently selected from hydrogen or C 1 ～C 6 Any of alkyl, cycloalkyl, alkenyl, or aryl groups; n is an addition number, and the value range of n is 0-30.
40. The oilfield quartz sand of claim 39, wherein the sand is further configured to form a slurry,
The R is 1 、R 2 、R 3 R is as follows 4 Selected from hydrogen or C 1 ～C 6 Any of alkyl, cycloalkyl or aryl groups.
41. The quartz sand for oil field as in claim 40, wherein the mass ratio of quartz sand to hydrophilic coating is between 0.0007:1 and 0.4:1.
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