CN113801155A - 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
- Publication number
- CN113801155A CN113801155A CN202010539590.0A CN202010539590A CN113801155A CN 113801155 A CN113801155 A CN 113801155A CN 202010539590 A CN202010539590 A CN 202010539590A CN 113801155 A CN113801155 A CN 113801155A
- Authority
- CN
- China
- Prior art keywords
- acid
- hydrophilic coating
- quartz sand
- coating treatment
- polyether
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 138
- 239000006004 Quartz sand Substances 0.000 title claims abstract description 99
- 239000011248 coating agent Substances 0.000 title claims abstract description 87
- 238000000576 coating method Methods 0.000 title claims abstract description 87
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 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 132
- 229920000570 polyether Polymers 0.000 claims abstract description 74
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 68
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 68
- 239000004576 sand Substances 0.000 claims abstract description 37
- 229910000077 silane Inorganic materials 0.000 claims abstract description 37
- 238000011049 filling Methods 0.000 claims abstract description 35
- 238000000034 method Methods 0.000 claims abstract description 27
- 125000003342 alkenyl group Chemical group 0.000 claims abstract description 3
- 125000003118 aryl group Chemical group 0.000 claims abstract description 3
- 125000000753 cycloalkyl group Chemical group 0.000 claims abstract description 3
- 238000006243 chemical reaction Methods 0.000 claims description 91
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 63
- 239000000243 solution Substances 0.000 claims description 46
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 claims description 42
- 239000007788 liquid Substances 0.000 claims description 39
- XXROGKLTLUQVRX-UHFFFAOYSA-N allyl alcohol Chemical compound OCC=C XXROGKLTLUQVRX-UHFFFAOYSA-N 0.000 claims description 34
- 239000003054 catalyst Substances 0.000 claims description 29
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 27
- 239000000126 substance Substances 0.000 claims description 22
- 239000007864 aqueous solution Substances 0.000 claims description 20
- 239000012530 fluid Substances 0.000 claims description 20
- 239000000413 hydrolysate Substances 0.000 claims description 20
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 18
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims description 17
- 229910052783 alkali metal Inorganic materials 0.000 claims description 15
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 claims description 14
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 12
- 239000002253 acid Substances 0.000 claims description 12
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims description 12
- 230000002378 acidificating effect Effects 0.000 claims description 10
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 8
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 8
- XBDQKXXYIPTUBI-UHFFFAOYSA-N Propionic acid Chemical compound CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 claims description 8
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 claims description 8
- 239000001257 hydrogen Substances 0.000 claims description 8
- 229910052739 hydrogen Inorganic materials 0.000 claims description 8
- 229910017604 nitric acid Inorganic materials 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 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
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 6
- 235000019253 formic acid Nutrition 0.000 claims description 6
- 150000001340 alkali metals Chemical class 0.000 claims description 5
- 150000001342 alkaline earth metals Chemical class 0.000 claims description 5
- 238000004519 manufacturing process Methods 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
- 125000000217 alkyl group Chemical group 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
- 229910017053 inorganic salt Inorganic materials 0.000 claims description 4
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 4
- 239000012299 nitrogen atmosphere Substances 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
- 239000012298 atmosphere Substances 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
- 229920000642 polymer Polymers 0.000 abstract description 52
- 230000032683 aging Effects 0.000 abstract description 9
- 238000002347 injection Methods 0.000 abstract description 9
- 239000007924 injection Substances 0.000 abstract description 9
- 230000002265 prevention Effects 0.000 abstract description 5
- 125000004435 hydrogen atom Chemical group [H]* 0.000 abstract description 2
- 238000009776 industrial production Methods 0.000 abstract 1
- 238000003756 stirring Methods 0.000 description 41
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 40
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 37
- 239000012295 chemical reaction liquid Substances 0.000 description 35
- 239000008367 deionised water Substances 0.000 description 30
- 229910021641 deionized water Inorganic materials 0.000 description 30
- 239000003921 oil Substances 0.000 description 26
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 22
- 238000010438 heat treatment Methods 0.000 description 18
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 16
- 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
- YUYCVXFAYWRXLS-UHFFFAOYSA-N trimethoxysilane Chemical compound CO[SiH](OC)OC YUYCVXFAYWRXLS-UHFFFAOYSA-N 0.000 description 15
- 238000006073 displacement reaction Methods 0.000 description 14
- 238000009495 sugar coating Methods 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
- 238000001816 cooling Methods 0.000 description 11
- 229910052697 platinum Inorganic materials 0.000 description 11
- 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
- 230000015572 biosynthetic process Effects 0.000 description 7
- 230000008859 change Effects 0.000 description 7
- 239000003153 chemical reaction reagent Substances 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
- 229910001873 dinitrogen Inorganic materials 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 238000011160 research Methods 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
- BZLVMXJERCGZMT-UHFFFAOYSA-N Methyl tert-butyl ether Chemical compound COC(C)(C)C BZLVMXJERCGZMT-UHFFFAOYSA-N 0.000 description 4
- 239000003125 aqueous solvent Substances 0.000 description 4
- 229960004106 citric acid Drugs 0.000 description 4
- 229960002303 citric acid monohydrate Drugs 0.000 description 4
- 238000011161 development Methods 0.000 description 4
- 230000018109 developmental process Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000005660 hydrophilic surface Effects 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 239000011259 mixed solution Substances 0.000 description 4
- 230000035699 permeability Effects 0.000 description 4
- 238000009738 saturating Methods 0.000 description 4
- 239000011780 sodium chloride Substances 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000008398 formation water Substances 0.000 description 3
- 238000005065 mining Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- UCSBCWBHZLSFGC-UHFFFAOYSA-N tributoxysilane Chemical compound CCCCO[SiH](OCCCC)OCCCC UCSBCWBHZLSFGC-UHFFFAOYSA-N 0.000 description 3
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-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
- 230000000903 blocking effect Effects 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
- 125000001033 ether group Chemical group 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- ZHPNWZCWUUJAJC-UHFFFAOYSA-N fluorosilicon Chemical compound [Si]F ZHPNWZCWUUJAJC-UHFFFAOYSA-N 0.000 description 2
- 238000011010 flushing procedure Methods 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
- 238000002390 rotary evaporation Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000002210 silicon-based material Substances 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 230000001131 transforming effect Effects 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
- 238000009825 accumulation Methods 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
- 239000012620 biological material Substances 0.000 description 1
- 235000019398 chlorine dioxide Nutrition 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000011247 coating layer 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
- 238000004090 dissolution Methods 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
- 238000007602 hot air drying Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000014759 maintenance of location 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
- 239000002245 particle Substances 0.000 description 1
- 239000000047 product 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
- 239000013049 sediment Substances 0.000 description 1
- 239000009671 shengli Substances 0.000 description 1
- 239000004526 silane-modified polyether Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000000638 stimulation Effects 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 Table
- 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 Table
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Materials Engineering (AREA)
- Ceramic Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Wood Science & Technology (AREA)
- Structural Engineering (AREA)
- Silicon Polymers (AREA)
- Polyethers (AREA)
- Paints Or Removers (AREA)
Abstract
The invention relates to a chemical agent suitable for preparing an anti-adsorption hydrophilic coating of quartz sand, and preparation and application thereof, in particular to alkoxy silane terminated polyether, and preparation and application thereof, and mainly solves the problem of polymer and aging adsorption prevention of oil-water wells in a polymer injection region. The alkoxy silane terminated polyether comprises a structure shown in a molecular general formula (1)Any of (a): wherein R is H or
R1、R2、R3And R4Independently selected from hydrogen atom or C1～C6Alkyl, cycloalkyl, alkenyl or aryl of (a); n is the addend number, and the value range of n is 0-30, so that the problem is solved well, and the method can be used in industrial production of filling sand of oil-water wells of oil fields.
Description
Technical Field
The invention relates to a chemical agent suitable for preparing an anti-adsorption hydrophilic coating of quartz sand, and preparation and application thereof, and the chemical agent comprises alkoxy silane terminated polyether, and preparation and application thereof, and mainly solves the problem of adsorption of anti-polymer and aging substances of an oil-water well in a polymer injection region.
Background
After the oil deposit is injected with the polymer water solution for a long time after the polymer flooding, the polymer is continuously hydrolyzed and adsorbed in a high-temperature and high-salt environment, and under the condition of continuously flushing a large amount of formation water, the polymer of the residual formation continuously enriches high-valence metal ions in the formation water, and is continuously wrapped and deposited with inorganic sediment, crude oil and the like in the formation water to generate a gel plugging substance to block the formation, so that the formation permeability is reduced, the injection allocation pressure is increased, the oil well produced liquid is reduced, and the development of the oil deposit is seriously influenced. The phenomenon can reappear after the blockage removal, the blockage removal validity period is influenced, and the mining efficiency is reduced. The main research and practice examples of transforming polymer injection well to water flooding short injection in China mainly focus on oil fields of polymer injection tertiary oil recovery test blocks such as Daqing oil fields, Shengli oil fields and the like in China.
The reason for transferring water flooding to water flooding and short injection of the polymer injection well is complex, and the blockage is difficult to remove by coating silt, dirt, oil stain and the like with polymers. According to the method, no relevant documents exist at present, the main plugging substances obtained by analyzing the flushing substances of the plugging substances by relevant field technicians are polymer agglomerate, dirt and oil stain mixed plugging substances, and no relevant research is carried out on the plugging mode and the plugging range of a reservoir stratum.
In order to solve the problem of polymer and aging adsorption prevention of oil-water wells in the polymer injection region, various methods for degrading polyacrylamide have been tested by many researchers. The method mainly comprises the modes of mechanical degradation, thermal degradation, chemical degradation, microbial degradation and the like (the degradation research progress of polyacrylamide for oil displacement, Liu De Xin, Zhao Xie Tai and the like), the mechanisms and the degradation conditions of various degradation modes are different, for the reservoir blockage removing technology, related water treatment documents can be used for reference, and the chemical degradation mode is more suitable for blockage removal due to the limitation of construction conditions and reservoir conditions. Daqing oil field reports use of special surfactants as depolymerant stimulation tests, but the validity period is not long. The conventional acidizing, filling and other processes of oil extraction in the victory oil field are used for carrying out the blockage removal work, 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 and hydrogen peroxide as the blocking remover, which has certain effect, but the safety is poor, the method is not suitable for storage, transportation and field construction, and the HSE requirement cannot be met.
On the basis of the existing blockage removal technology, how to prevent secondary blockage after blockage removal is also an important direction in the research. The invention realizes the oil layer protection of the near wellbore zone by modifying the surface of the filling sand. Relevant basic research shows that the polyacrylamide for oil displacement is a main factor causing the blockage of the oil-water well of the development unit in the aspects of reservoir denaturation, aging and composite blockage formation. The adsorption and trapping effects of the polymer on the surface of the sand filled in the sand prevention layer cause the retention and accumulation of a large amount of stratum particles in the sand prevention layer, and the permeability of the sand prevention layer is reduced. Reducing polymer adsorption to the silica sand pack is critical to achieving near-wellbore zone reservoir protection.
The composition of produced fluids in the formation is complex, including water containing inorganic salts, clay components, crude oil, polyacrylamide, and aged polyacrylamide. Anti-adsorption of all of the above components may be required if reduced adsorption of the polymer is to be achieved. There are two technical routes to reduce adsorption. The first method is to select low-energy fluorine-silicon materials to modify the surface of the filling sand into a low-energy surface, and the low-energy surface generally has low adsorption condition on various substances. And the second method is to select polyether hydrophilic materials. Such materials preferentially bind water in the presence of water, resulting in the aforementioned substances not binding to the hydrophilic surface. The technical route of utilizing polyether to modify the surface of the material is applied to a plurality of biological materials, and the material modified by polyether basically does not adsorb various proteins. Proteins are polymers of various amino acids, and have physical and chemical properties similar to those of polyacrylamide. Meanwhile, polyether is a hydrophilic material and has oleophobic property under the condition of water. Compared with fluorine-silicon materials, the polyether material has lower cost and is more suitable for treating quartz sand. After the quartz sand subjected to surface modification is squeezed into a stratum as a sand control zone, polymer adsorption of a well entering zone can be reduced, the blockage removing effective period is prolonged, the relative permeability of an oil phase cannot be influenced, the liquid production of an oil well can be effectively maintained, and the problem of polymer blockage of the oil well is solved.
With the continuous development and deepening of the triple-mining technology, the follow-up triple-mining pilot test block can be expected to gradually expand to second-class and third-class oil reservoirs with low permeability, and under the oil reservoir condition, a blocking object mainly made of an aged polymer is more prone to damage the reservoir, so that the development of tertiary oil recovery is influenced. This patent can provide corresponding technical support for the tertiary oil recovery that can carry out for follow-up.
Disclosure of Invention
One of the problems to be solved by the invention is that the adhesion of the compound of the aging polymer and the crude oil on the surface of the filling sand of the oil-water well reduces the liquid yield of the oil-water well and the yield of the crude oil in the prior art, and the invention provides the alkoxy silane terminated polyether 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 compound of the aging polymer and the crude oil is effectively reduced, and the liquid yield of the oil-water well and the yield of the crude oil are maintained.
The second technical problem to be solved by the invention is to provide a preparation method of alkoxy silane terminated polyether.
The invention also provides an anti-adsorption hydrophilic coating chemical agent, which comprises the hydrolysate of the alkoxy silane terminated polyether. The chemical agent can be used for modifying the surface of quartz sand into a nonionic hydrophilic surface, effectively reduces the adhesion of an aging polymer and a crude oil compound, and simultaneously keeps the liquid yield of an oil-water well and the crude oil yield.
The fourth technical problem to be solved by the present invention is to provide a hydrophilic coating treatment liquid comprising the above alkoxysilane-terminated polyether and/or a hydrolysate thereof. The hydrophilic coating treatment liquid can be used for coating quartz sand so as to obtain a hydrophilic coating on the surface of the quartz sand; the problem of preparing a uniform hydrophilic coating of alkoxy silane terminated polyether on the surface of the filling sand on the ground can be effectively solved.
The fifth technical problem to be solved by the present invention is to provide a method for preparing a hydrophilic coating treatment solution corresponding to the fourth technical problem to be solved.
The sixth technical problem to be solved by the present invention is to provide an application method of the hydrophilic coating treatment solution 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 comprising the above alkoxysilane-terminated polyether and/or a hydrolysate thereof. The hydrophilic coating treatment liquid can be used for soaking quartz sand to be treated, so that a hydrophilic coating is obtained on the surface of the quartz sand; in particular, the problem of preparing a uniform hydrophilic coating of alkoxy silane terminated polyether on the surface of the filled sand in situ underground can be solved.
The eighth technical problem to be solved by the present invention is to provide a method for preparing a hydrophilic coating treatment solution corresponding to the sixth technical problem.
The ninth technical problem to be solved by the present invention is to provide a method for preparing a hydrophilic coating treatment solution corresponding to the sixth technical problem.
The invention provides quartz sand for oil fields, which solves the technical problem in the prior art. The quartz sand for the oil field comprises the hydrophilic coating formed by the alkoxy silane end-capped polyether and/or the hydrolysate thereof, is used for filling sand for an oil-water well of the oil field, effectively reduces the adhesion of an aged polymer and a crude oil compound, and simultaneously keeps the liquid yield of the oil-water well and the yield of crude oil.
In order to solve one of the above technical problems, the technical solution adopted by the present invention is as follows: an alkoxysilane-terminated polyether comprising any one of the structures represented by the general molecular formula (1):
wherein R is H or
R1、R2、R3And R4Independently selected from hydrogen or C1～C6Any of alkyl, cycloalkyl, alkenyl or aryl of (a); n is the addition number of alkoxy groups, and the value range of n is 0-30.
In the above technical scheme, R1、R2、R3And R4Is selected from hydrogen or C1～C6Is more independently preferably selected from a hydrogen atom or C1～C6Any of the alkyl groups of (a).
In the above technical scheme, R4Is selected from hydrogen or/and methyl; the value range of n is 1-30, and when R is4When 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, and the general molecular formulas (3) and (4) of the allyl polyether and the general molecular formula (5) of the alkoxy silane are as follows:
in the technical scheme, the value range of n is 0-30, preferably 1-30, and more preferably 1-10.
The preparation method of the alkoxy silane terminated polyether (1) or (2) comprises the following steps:
in step (a) it is preferred that: carrying out alkoxylation reaction on allyl alcohol and a catalyst with ethylene oxide and propylene oxide in sequence under the nitrogen atmosphere to obtain allyl polyether; the preferred conditions of the alkoxylation reaction are 60-180 ℃ and 0.05-10 MPa;
in step (b) it is preferred that: the acidic condition is adjusted by acetic acid; the temperature of the contact with the allyl polyether is 20-130 ℃, and the duration of the addition process is not less than 0.1-50 hours; the reaction temperature is not more than 130 ℃, and the reaction is carried out for at least 0.5 to 60 hours at a constant temperature of 20 to 130 ℃.
In the technical scheme, the alkoxy silane terminated polyether can be coated with a hydrophilic coating on the surface of quartz sand by a spraying, airing or injecting/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: a method for preparing alkoxy silane terminated polyether, which solves one of the above technical problems, comprises the following steps:
(a) preparation of allyl polyethers
Reacting allyl alcohol and a catalyst under an inert atmosphere with
Carrying out alkoxylation reaction to obtain allyl polyether;
(b) preparation of alkoxysilane-terminated polyethers
Reacting allyl polyether with catalyst and alkoxy silane under acidic condition
And (3) contacting and reacting to obtain the alkoxy silane terminated polyether.
In the above technical solution, the allyl alcohol is reacted with
The molar ratio of (A) to (B) is preferably 1 (0-30), more preferably 1 (1-30), and still more preferably 1 (1-10); r4Preferably H and/or methyl.
In the technical scheme, the general formulas (3) and (4) of the allyl polyether molecules are as follows:
in the above technical solution, in the step (a), it is preferable that: carrying out alkoxylation reaction on allyl alcohol and a catalyst with ethylene oxide and propylene oxide in sequence under the nitrogen atmosphere to obtain allyl polyether; the preferred conditions of the alkoxylation reaction are that the temperature is 80-180 ℃ and the pressure is 0.05-10 MPa; in step (b) it is preferred that: the acidic condition is adjusted by acetic acid; the temperature of the contact with the allyl polyether is 20-120 ℃, and the duration of the addition 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 a 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 comprising a hydrolysate of an alkoxysilane-terminated polyether according to any one of the above-mentioned technical solutions to solve the technical problems.
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 liquid yield of an oil-water well and the yield of crude oil are kept while the adhesion of an aging polymer and a crude oil compound is effectively reduced.
In order to solve the fourth technical problem, the technical scheme adopted by the invention is as follows: a hydrophilic coating treatment liquid comprising the alkoxysilane-terminated polyether and/or the hydrolysate thereof according to any one of the above-described means for solving the technical problems; the pH value of the treatment liquid is less than 7.
In the above technical solution, the pH value is preferably less than 6.
In the above technical solution, it is further preferable that: the treatment liquid preferably comprises the following components in parts by weight: 0.01-30 parts of alkoxy silane terminated polyether and/or hydrolysate thereof; 0.0001-1 part of acid; 20-100 parts of water; more preferably, the scheme is as follows: the acid is preferably any 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 any 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: a method for preparing a hydrophilic coating treatment fluid for solving the fourth technical problem comprises the following steps:
and dissolving the acid in water, adjusting the pH value of the water to 0-4, and then adding the alkoxy silane terminated polyether to obtain the hydrophilic coating treatment solution.
In order to solve the sixth technical problem, the technical scheme adopted by the invention is as follows: an application method of the hydrophilic coating treatment liquid according to any one of the fourth technical means for solving the technical problems comprises the following steps: and (2) coating the quartz sand to be treated with hydrophilic coating treatment liquid containing 0.01-10 wt% of alkoxy silane terminated polyether and/or hydrolysate thereof in percentage by mass based on the alkoxy silane terminated polyether to obtain the hydrophilic coating.
In the technical scheme, the temperature of hot air which can be adopted during hot air drying is 50-160 ℃, preferably 60-100 ℃.
In the technical scheme, the preparation concentration of the alkoxy silane terminated polyether can be 0.1-10 wt%, preferably 0.15-5 wt%, and more preferably 0.2-2 wt%.
In order to solve the seventh technical problem, the technical scheme adopted by the invention is as follows: a hydrophilic coating treatment fluid comprises the following components in parts by weight:
1) 0.01-30 parts of any one of the alkoxy silane terminated polyethers and/or hydrolysates thereof in the technical scheme for solving the technical problems;
2)0.0001-1 part of acid, wherein,
3) 0-30 parts of inorganic salt;
4) 0-20 parts of organic acid salt;
5)20 to 100 parts of water.
In the above technical scheme, the pH value of the treatment liquid is preferably less than 7; more preferably 6 or less; the pH value is more preferably 0 to 6.
In the above-described embodiment, 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, hydrogenphosphate, dihydrogenphosphate, hydrogencarbonate 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 monocarboxylate, alkali metal citrate, alkali metal borate, alkali metal barbiturate, alkali metal sulfonate, alkali metal sulfate salt, alkali metal amino acid salt, alkaline earth metal monocarboxylate, alkaline earth metal citrate, alkaline earth metal borate, alkaline earth metal barbiturate, alkaline earth metal sulfonate, alkaline earth metal sulfate salt, and alkaline earth metal amino acid salt is preferable.
In order to solve the eighth technical problem, the technical scheme adopted by the invention is as follows: a method for preparing a hydrophilic coating treatment fluid for solving the fourth technical problem comprises the following steps:
dissolving the acid in water, adjusting the pH value of the water to 0-3, then adding the alkoxy silane polyether, and after the pre-hydrolysis of the alkoxy silane polyether in an acidic aqueous solution is completed, adding correspondingly added inorganic base, inorganic acid salt and organic acid; and obtaining the hydrophilic coating treatment fluid.
In order to solve the ninth technical problem, the technical scheme adopted by the invention is as follows: an application method of the hydrophilic coating treatment fluid in any one of the seven technical schemes for solving the technical problems includes the step of coating the hydrophilic coating treatment fluid with the alkoxysilane terminated polyether and/or hydrolysate thereof, wherein the mass percentage concentration of the alkoxysilane terminated polyether is 0.05-30 wt%, and the hydrophilic coating treatment fluid is used for coating quartz sand to be treated to obtain a hydrophilic coating; or injecting the hydrophilic coating treatment fluid with the mass percentage concentration of 0.05-30 wt% of the alkoxy silane terminated polyether and/or hydrolysate thereof from the oil-water well to the position of the filling sand or the stratum to be treated, and then closing the well.
In the above technical solution, the mass concentration of the hydrophilic coating treatment liquid is preferably 0.1 to 10% wt, more preferably 0.15 to 5% wt, and further preferably 0.2 to 2% wt.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is as follows: the quartz sand for the oil field comprises quartz sand and a hydrophilic coating; wherein the hydrophilic coating layer contains the alkoxysilane-terminated polyether and/or the hydrolysate thereof described in any one of the above-mentioned technical solutions, or is prepared from the treatment solution described in any one of the above-mentioned technical solutions.
In the technical scheme, the mass ratio of the quartz sand to the hydrophilic coating is preferably 0.0007: 1-0.4: 1.
In the technical scheme, the quartz sand for the oil field comprises the hydrophilic coating formed by the alkoxy silane end-capped polyether and/or the hydrolysate thereof, so that the technical personnel in the field can be used for filling the sand in the oil-water well of the oil field according to the prior art, the adhesion of an aging polymer and a crude oil compound is effectively reduced, and the liquid yield of the oil-water well and the crude oil yield are kept.
The alkoxy silane terminated polyether can be used for preparing a non-polar hydrophilic coating on the surface of quartz sand. The hydrophilic coating can effectively reduce the adsorption of polyacrylamide, can effectively maintain the liquid production of an oil well, relieves the problem of oil well polymer blockage, and has the advantages of cheap and easily-obtained raw materials, simple synthesis process, low final product cost 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 terminated polyether is used for preparing the nonpolar hydrophilic coating on the surface of the quartz sand, can effectively reduce the adsorption of polyacrylamide, can effectively maintain the liquid production of an oil well, and can relieve the problem of oil well polymer blockage, and meanwhile, the invention has the advantages of cheap and easily obtained raw materials, simple synthesis process, low final product cost and the like, and obtains better technical effect.
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 is replaced for three times, the temperature is raised to 130 ℃, 380 g of ethylene oxide is pressed under the pressure condition, 503 g of propylene oxide is added after the reaction is finished, and the intermediate of hydroxyl-terminated allyl polyoxyethylene (EO chain number is 4.3) polyoxypropylene (PO chain number is 4.3) ether is obtained after the reaction is finished. Removing volatile substances under reduced pressure, and cooling to normal temperature. Adding 30 g of acetic acid into a reaction kettle to adjust the reaction liquid to acidity, dissolving 0.5g of the reaction liquid into 5g of deionized water, measuring the pH value by using a wide pH test paper to be about 3-4, adding a platinum catalyst, heating to 70 ℃, stirring for 1 hour, then slowly dropwise adding trimethoxy silane, and controlling the temperature of the reaction liquid to be not more than 80 ℃ by controlling the dropwise adding rate. After the dropwise addition, the reaction is finished 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 to discharge hydroxyl-terminated 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, followed by stirring uniformly, 0.5g of hydroxyl-terminated allyl polyoxyethylene (EO chain number: 4.3) polyoxypropylene (PO chain number: 4.3) ether-modified trimethoxysilane was added, followed by stirring to dissolve the components, followed by prehydrolysis with stirring at room temperature for 2 hours. Adding 100 g of 20-40 mesh quartz sand into a sugar coating pot, rotating the sugar coating pot, heating the quartz sand by using hot air at 102 ℃, and slowly dropwise adding a prehydrolyzed hydroxyl-terminated allyl polyoxyethylene (EO chain number is 4.3) polyoxypropylene (PO chain number is 4.3) ether modified trimethoxy silane aqueous solution. And finishing the coating operation after finishing the dripping.
The properties of the coated quartz sand were determined: a20 g sample of coated quartz sand was sealed in a 250ml transparent blue-capped reagent bottle together with 60 g of 0.5% wt ZL-II aqueous solution and placed in a 45 ℃ constant temperature shaker at 120 rpm. After shaking for 4 days, the change in polymer concentration before and after soaking in quartz sand was determined with TOC. The experimental data show that the polymer adsorption capacity of the coated quartz sand is reduced by more than 70 percent compared with that of the uncoated quartz sand.
[ example 2 ]
After 116.2 g of allyl alcohol and 20 g of catalyst were added to a reaction vessel, nitrogen gas was substituted three times, the temperature was raised to 130 ℃, 883.8 g of ethylene oxide was pressed under pressure, and after the reaction was completed, a hydroxy-terminated allyl polyoxyethylene (EO chain number: 10.03) ether intermediate was obtained. Removing volatile substances under reduced pressure, and cooling to normal temperature. Adding 30 g of acetic acid into a reaction kettle to adjust the reaction liquid to acidity, dissolving 0.5g of the reaction liquid into 5g of deionized water, measuring the pH value by using a wide pH test paper to be about 3-4, adding a platinum catalyst, heating to 70 ℃, stirring for 1 hour, then slowly dropwise adding trimethoxy silane, and controlling the temperature of the reaction liquid to be not more than 80 ℃ by controlling the dropwise adding rate. After the dropwise addition, the reaction can be finished 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 to discharge hydroxyl-terminated polyoxyethylene (EO chain number is 10.03) ether modified trimethoxy silane.
50 g of deionized water was added with 25. mu.l of concentrated sulfuric acid, stirred uniformly, added with 0.5g of ether-modified trimethoxysilane having a hydroxyl group-terminated polyoxyethylene (EO chain number: 10.03), stirred to dissolve, and prehydrolyzed at room temperature for 2 hours. Adding 100 g of 20-40 mesh quartz sand into a sugar coating pot, rotating the sugar coating pot, heating the quartz sand by using hot air at 102 ℃, and slowly dropwise adding a prehydrolyzed hydroxyl-terminated polyoxyethylene (EO chain number is 10.03) ether modified trimethoxy silane aqueous solution. And finishing the coating operation after finishing the dripping.
The properties of the coated quartz sand were determined: a20 g sample of coated quartz sand was sealed in a 250ml transparent blue-capped reagent bottle together with 60 g of 0.5% wt ZL-II aqueous solution and placed in a 45 ℃ constant temperature shaker at 120 rpm. After shaking for 4 days, the change in polymer concentration before and after soaking in quartz sand was determined with TOC. The experimental data show that the polymer adsorption capacity of the coated quartz sand is reduced by more than 80 percent compared with that of the uncoated quartz sand.
[ example 3 ]
After 116.2 g of allyl alcohol and 20 g of catalyst were added to a reaction vessel, nitrogen gas was substituted three times, the temperature was raised to 130 ℃, 701.6 g of ethylene oxide was pressed under pressure, 182 g of propylene oxide was added after the reaction was completed, and an intermediate of hydroxyl-terminated allyl polyoxyethylene (EO-chain-number: 7.97) polyoxypropylene (PO-chain-number: 2.07) ether was obtained after the reaction was completed. Removing volatile substances under reduced pressure, and cooling to normal temperature. Adding 30 g of acetic acid into a reaction kettle to adjust the reaction liquid to acidity, dissolving 0.5g of the reaction liquid into 5g of deionized water, measuring the pH value by using a wide pH test paper to be about 3-4, adding a platinum catalyst, heating to 70 ℃, stirring for 1 hour, then slowly dropwise adding trimethoxy silane, and controlling the temperature of the reaction liquid 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 hydroxyl-terminated allyl polyoxyethylene (EO chain number: 7.97) polyoxypropylene (PO chain number: 2.07) ether-modified trimethoxysilane.
To 50 g of deionized water, 25. mu.l of concentrated sulfuric acid was added, followed by stirring uniformly, 0.5g of hydroxyl-terminated allyl polyoxyethylene (EO chain number: 7.97) polyoxypropylene (PO chain number: 2.07) ether-modified trimethoxysilane was added, followed by dissolution with stirring and prehydrolysis with stirring at room temperature for 2 hours. Adding 100 g of 20-40 mesh quartz sand into a sugar coating pot, rotating the sugar coating pot, heating the quartz sand by using hot air at 102 ℃, and slowly dropwise adding a prehydrolyzed hydroxyl-terminated allyl polyoxyethylene (EO chain number: 7.97) polyoxypropylene (PO chain number: 2.07) ether modified trimethoxy silane aqueous solution. And finishing the coating operation after finishing the dripping.
The properties of the coated quartz sand were determined: a20 g sample of coated quartz sand was sealed in a 250ml transparent blue-capped reagent bottle together with 60 g of 0.5% wt ZL-II aqueous solution and placed in a 45 ℃ constant temperature shaker at 120 rpm. After shaking for 4 days, the change in polymer concentration before and after soaking in quartz sand was determined with TOC. The experimental data show that the polymer adsorption capacity of the coated quartz sand is reduced by more than 65 percent compared with that of the uncoated quartz sand.
[ example 4 ]
After 116.2 g of allyl alcohol and 20 g of catalyst were added to a reaction vessel, nitrogen gas was substituted three times, the temperature was raised to 130 ℃, 883.8 g of ethylene oxide was pressed under pressure, and after the reaction was completed, an ether intermediate of hydroxyl-terminated allyl polyoxyethylene (EO chain number: 10.04) was obtained. Removing volatile substances under reduced pressure, and cooling to normal temperature. Adding 30 g of acetic acid into a reaction kettle to adjust the reaction liquid to acidity, dissolving 0.5g of the reaction liquid into 5g of deionized water, measuring the pH value by using a wide pH test paper to be about 3-4, adding a platinum catalyst, heating to 70 ℃, stirring for 1 hour, then slowly dropwise adding trimethoxy silane, and controlling the temperature of the reaction liquid to be not more than 80 ℃ by controlling the dropwise adding rate. After the dropwise addition, the reaction can be finished 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 to discharge hydroxyl-terminated allyl polyoxyethylene (EO chain number is 10.04) ether modified trimethoxy silane.
50 g of deionized water was added with 25. mu.l of concentrated sulfuric acid, stirred uniformly, added with 0.5g of ether-modified trimethoxysilane having a hydroxyl-terminated allyl polyoxyethylene (EO chain number: 10.04), stirred to dissolve, and prehydrolyzed at room temperature for 2 hours with stirring. Adding 100 g of 20-40 mesh quartz sand into a sugar coating pot, rotating the sugar coating pot, heating the quartz sand by using hot air at 102 ℃, and slowly dropwise adding a prehydrolyzed hydroxyl-terminated allyl polyoxyethylene (EO chain number is 10.04) ether modified trimethoxy silane aqueous solution. And finishing the coating operation after finishing the dripping.
The properties of the coated quartz sand were determined: 20 g of the coated quartz sand sample was sealed in a 250ml transparent blue-capped reagent bottle together with 60 g of 0.5% wt ZL-II aqueous solution (5000 ppm NaCl in aqueous solvent) and then placed in a 45 ℃ constant temperature shaker at 120 rpm. After shaking for 4 days, the change in polymer concentration before and after soaking in quartz sand was determined with TOC. The experimental data show that the polymer adsorption capacity of the coated quartz sand is reduced by more than 85 percent compared with that of the uncoated quartz sand.
[ example 5 ]
After 116.2 g of allyl alcohol and 20 g of catalyst were added to a reaction vessel, nitrogen gas was substituted three times, the temperature was raised to 130 ℃, 883.8 g of ethylene oxide was pressed under pressure, and after the reaction was completed, an ether intermediate of hydroxyl-terminated allyl polyoxyethylene (EO chain number: 10.04) was obtained. Removing volatile substances under reduced pressure, and cooling to normal temperature. Adding 30 g of acetic acid into a reaction kettle to adjust the reaction liquid to acidity, dissolving 0.5g of the reaction liquid into 5g of deionized water, measuring the pH value by using a wide pH test paper to be about 3-4, adding a platinum catalyst, heating to 70 ℃, stirring for 1 hour, then slowly dropwise adding triethoxysilane, and controlling the temperature of the reaction liquid to be not more than 80 ℃ by controlling the dropwise adding rate. After the dropwise addition, 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 to discharge hydroxyl-terminated allyl polyoxyethylene (EO chain number is 10.04) ether modified triethoxysilane.
To 50 g of deionized water was added 25. mu.l of concentrated sulfuric acid, followed by stirring uniformly, 0.5g of ether-modified triethoxysilane having hydroxyl-terminated allyl polyoxyethylene (EO chain number: 10.04) was added, followed by stirring to dissolve the mixture, and then prehydrolysis was performed at room temperature for 2 hours with stirring. Adding 100 g of 20-40 mesh quartz sand into a sugar coating pot, rotating the sugar coating pot, heating the quartz sand by using hot air at 102 ℃, and slowly dropwise adding a prehydrolyzed hydroxyl-terminated allyl polyoxyethylene (EO chain number is 10.04) ether modified triethoxysilane aqueous solution. And finishing the coating operation after finishing the dripping.
The properties of the coated quartz sand were determined: a20 gram sample of the coated quartz sand was sealed in a 250ml clear blue-capped reagent bottle together with 60 grams of a 0.5 wt% ZL-II aqueous solution (30000 ppm NaCl and 2771ppm CaCl2 in aqueous solvent) and shaken at 120rpm in a 45 ℃ constant temperature shaker. After shaking for 4 days, the change in polymer concentration before and after soaking in quartz sand was determined with TOC. The experimental data show that the polymer adsorption capacity of the coated quartz sand is reduced by more than 85 percent compared with that of the uncoated quartz sand.
[ example 6 ]
After 116.2 g of allyl alcohol and 20 g of catalyst were added to a reaction vessel, nitrogen gas was substituted three times, the temperature was raised to 130 ℃, 883.8 g of ethylene oxide was pressed under pressure, and after the reaction was completed, an ether intermediate of hydroxyl-terminated allyl polyoxyethylene (EO chain number: 10.04) was obtained. Removing volatile substances under reduced pressure, and cooling to normal temperature. Adding 30 g of acetic acid into a reaction kettle to adjust the reaction liquid to acidity, dissolving 0.5g of the reaction liquid into 5g of deionized water, measuring the pH value by using a wide pH test paper to be about 3-4, adding a platinum catalyst, heating to 70 ℃, stirring for 1 hour, then slowly dropwise adding tributoxysilane, and controlling the temperature of the reaction liquid to be not more than 80 ℃ by controlling the dropwise adding rate. After the dropwise addition, the reaction can be finished after controlling the temperature of the reaction solution at 70-80 ℃ for two hours, and the reaction solution is cooled to room temperature to discharge hydroxyl-terminated allyl polyoxyethylene (EO chain number is 10.04) ether modified tributoxysilane.
To 50 g of deionized water was added 25. mu.l of concentrated sulfuric acid, followed by stirring uniformly, 0.5g of ether-modified tributoxysilane having hydroxyl-terminated allyl polyoxyethylene (EO chain number: 10.04) was added, followed by stirring to dissolve the components, followed by prehydrolysis with stirring at room temperature for 2 hours. Adding 100 g of 20-40 mesh quartz sand into a sugar coating pot, rotating the sugar coating pot, heating the quartz sand by using hot air at 102 ℃, and slowly dropwise adding a prehydrolyzed hydroxyl-terminated allyl polyoxyethylene (EO chain number is 10.04) ether modified tributyloxysilane aqueous solution. And finishing the coating operation after finishing the dripping.
The properties of the coated quartz sand were determined: a20 gram sample of coated quartz sand was mixed with 60 grams of a 0.5 wt% ZL-II aqueous solution (50000 ppm NaCl and 2771ppm CaCl in aqueous solvent)2) All of them were put in a 250ml transparent blue-capped reagent bottle and sealed, and then placed in a 45 ℃ constant temperature shaker to be shaken at a rate of 120 rpm. After shaking for 4 days, the change of the polymer concentration before and after soaking in quartz sand is measured by using TOCAnd (4) transforming. The experimental data show that the polymer adsorption capacity of the coated quartz sand is reduced by more than 85 percent compared with that of the uncoated quartz sand.
[ example 7 ]
116.2 g of allyl alcohol and 20 g of catalyst are added into a reaction kettle, then nitrogen replacement is carried out for three times, the temperature is raised to 130 ℃, 767.88 g of ethylene oxide is pressed under the condition of pressurization, the temperature is lowered 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 slow stirring, and the reaction is finished after about 4 hours. Cooling the reaction solution to normal temperature, adding the reaction solution into 2000 ml of absolute ethyl alcohol, adding acetic acid to adjust the reaction solution to acidity, filtering to remove precipitated inorganic salts, and removing the ethyl alcohol by rotary evaporation. 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, dissolving 0.5g of the reaction liquid into 5g of deionized water, measuring the pH value by using a wide pH test paper to be about 3-4, adding a platinum catalyst, heating to 70 ℃, stirring for 1 hour, then slowly dropwise adding trimethoxy silane, and controlling the temperature of the reaction liquid to be not more than 80 ℃ by controlling the dropwise adding rate. After the dropwise addition, the reaction can be finished after the temperature of the reaction solution is controlled to be between 70 and 80 ℃ for two hours, and the reaction solution is cooled to room temperature to discharge trimethoxy-3- [ 3' - (trimethoxysilyl) propyl ] polyoxyethylene (EO chain number is 4.36) ether group ] propyl silane
To 50 g of deionized water, 25. mu.l of concentrated sulfuric acid was added and stirred uniformly, and 0.5g of trimethoxy-3- [ 3' - (trimethoxysilyl) propyl ] polyoxyethylene (EO chain number: 4.36) ether ] propyl silane was added and dissolved by stirring, followed by prehydrolysis with stirring at room temperature for 2 hours. Adding 100 g of 20-40 mesh quartz sand into a sugar coating pot, rotating the sugar coating pot, heating the quartz sand by using hot air at 102 ℃, and slowly dropwise adding a prehydrolyzed trimethoxy-3- [ 3' - (trimethoxysilyl) propyl ] polyoxyethylene (EO chain number is 4.36) ether group ] propyl silane aqueous solution. And finishing the coating operation after finishing the dripping.
The properties of the coated quartz sand were determined: a20 gram sample of the coated quartz sand was sealed in a 250ml clear blue-capped reagent bottle together with 60 grams of a 0.5 wt% ZL-II aqueous solution (30000 ppm NaCl and 2771ppm CaCl2 in aqueous solvent) and shaken at 120rpm in a 45 ℃ constant temperature shaker. After shaking for 4 days, the change in polymer concentration before and after soaking in quartz sand was determined with TOC. The experimental data show that the polymer adsorption capacity of the coated quartz sand is reduced by more than 65 percent compared with that of the uncoated quartz sand.
[ example 8 ]
116.2 g of allyl alcohol and 20 g of catalyst are added into a reaction kettle, nitrogen is replaced for three times, the temperature is raised to 130 ℃, 380 g of ethylene oxide is pressed under the pressure condition, 503 g of propylene oxide is added after the reaction is finished, and the intermediate of hydroxyl-terminated allyl polyoxyethylene (EO chain number is 4.32) polyoxypropylene (PO chain number is 4.32) ether is obtained after the reaction is finished. Removing volatile substances under reduced pressure, and cooling to normal temperature. Then adding 30 g of acetic acid into the reaction kettle to adjust the reaction liquid to acidity, dissolving 0.5g of the reaction liquid into 5g of deionized water, measuring the pH value by using a wide pH test paper to be about 3-4, adding a platinum catalyst, heating to 70 ℃, stirring for 1 hour, then slowly dropwise adding trimethoxy silane, and controlling the temperature of the reaction liquid to be not more than 80 ℃ by controlling the dropwise adding rate. After the dropwise addition, the reaction is terminated after the temperature of the reaction solution is controlled at 70 ℃ to 80 ℃ for two hours, and the temperature of the reaction solution is lowered to room temperature to discharge hydroxyl-terminated allyl polyoxyethylene (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, followed by stirring uniformly, 0.5g of hydroxyl-terminated allyl polyoxyethylene (EO chain number: 4.32) polyoxypropylene (PO chain number: 4.32) ether-modified trimethoxysilane was added, followed by stirring to dissolve the mixture, followed by prehydrolysis at room temperature for 2 hours with stirring, addition of 3.73 ml of 1% by weight sodium hydroxide, addition of 6.27 g of a mixed solution of disodium hydrogenphosphate and citric acid (containing 0.258 g of disodium hydrogenphosphate and 0.229 g of citric acid monohydrate), and then stirring uniformly. Filling 20-40-mesh quartz sand into a 1-foot glass sand filling pipe, then installing the glass sand filling pipe in a displacement device, and placing the displacement device in an environment at 60 ℃. And (3) saturating the sand filling pipe with deionized water, displacing the deionized water in the sand filling pipe with the prepared treatment fluid, closing a switch before and after the sand filling pipe, and preserving for 48 hours at the temperature of 60 ℃ to finish the coating operation.
The properties of the coated quartz sand were determined: the temperature of the displacement apparatus was lowered to 45 ℃, the sand-packed tube was displaced with 0.5% wt ZL-II aqueous solution, the liquid was received by a centrifuge tube, and the dynamic adsorption behavior of the polymer on the coated quartz sand was measured. The experimental data show that the dynamic adsorption capacity of the coated quartz sand to the polymer is reduced by more than 50 percent compared with the uncoated quartz sand.
[ example 9 ]
After 116.2 g of allyl alcohol and 20 g of catalyst were added to a reaction vessel, nitrogen gas was substituted three times, the temperature was raised to 130 ℃, 910 g of ethylene oxide was pressed under pressure, and after the reaction was completed, an ether intermediate of hydroxyl-terminated allyl polyoxyethylene (EO-chain number: 10.34) was obtained. Removing volatile substances under reduced pressure, and cooling to normal temperature. Then adding 30 g of acetic acid into the reaction kettle to adjust the reaction liquid to acidity, dissolving 0.5g of the reaction liquid into 5g of deionized water, measuring the pH value by using a wide pH test paper to be about 3-4, adding a platinum catalyst, heating to 70 ℃, stirring for 1 hour, then slowly dropwise adding trimethoxy silane, and controlling the temperature of the reaction liquid to be not more than 80 ℃ by controlling the dropwise adding rate. After the dropwise addition, the reaction can be finished 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 to discharge hydroxyl-terminated allyl polyoxyethylene (EO chain number is 10.34) ether modified trimethoxy silane.
Adding 25 mu l of concentrated sulfuric acid into 40 g of deionized water, stirring uniformly, adding 0.5g of hydroxyl-terminated allyl polyoxyethylene (EO chain number is 10.34) ether modified trimethoxy silane, stirring to dissolve, stirring at room temperature for prehydrolysis for 2 hours, adding 3.73 ml of 1% by weight sodium hydroxide, adding 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), and stirring uniformly. Filling 20-40-mesh quartz sand into a 1-foot glass sand filling pipe, then installing the glass sand filling pipe in a displacement device, and placing the displacement device in an environment at 60 ℃. And (3) saturating the sand filling pipe with deionized water, displacing the deionized water in the sand filling pipe with the prepared treatment fluid, closing a switch before and after the sand filling pipe, and preserving for 48 hours at the temperature of 60 ℃ to finish the coating operation.
The properties of the coated quartz sand were determined: the temperature of the displacement apparatus was lowered to 45 ℃, the sand-packed tube was displaced with 0.5% wt ZL-II aqueous solution, the liquid was received by a centrifuge tube, and the dynamic adsorption behavior of the polymer on the coated quartz sand was measured. The experimental data show that the dynamic adsorption capacity of the coated quartz sand to the polymer is reduced by more than 90 percent compared with the uncoated quartz sand.
[ example 10 ]
116.2 g of allyl alcohol and 20 g of catalyst are added into a reaction kettle, nitrogen is replaced for three times, the temperature is raised to 130 ℃, 701.6 g of ethylene oxide is pressed under the pressure condition, and 182 g of propylene oxide is added after the reaction is finished. Removing volatile substances under reduced pressure, and cooling to normal temperature. Then adding 30 g of acetic acid into the reaction kettle to adjust the reaction liquid to acidity, dissolving 0.5g of the reaction liquid into 5g of deionized water, measuring the pH value by using a wide pH test paper to be about 3-4, adding a platinum catalyst, heating to 70 ℃, stirring for 1 hour, then slowly dropwise adding tributoxysilane, and controlling the temperature of the reaction liquid 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 then the reaction solution was cooled to room temperature to discharge trimethoxy-3- [ 3' - (trimethoxysilyl) propyl ] polyoxyethylene (EO-chain number: 7.97) polyoxypropylene (PO-chain number: 1.57) ether ] propyl silane.
To 40 g of deionized water, 25. mu.l of concentrated sulfuric acid was added, followed by stirring uniformly, 0.5g of trimethoxy-3- [ 3' - (trimethoxysilyl) propyl ] polyoxyethylene (EO chain number 7.97) polyoxypropylene (PO chain number 1.57) ether ] propyl silane was added, followed by dissolving with stirring, prehydrolysis with stirring at room temperature for 2 hours, addition of 3.73 ml of 1% by weight sodium hydroxide, addition of 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), and stirring uniformly. Filling 20-40-mesh quartz sand into a 1-foot glass sand filling pipe, then installing the glass sand filling pipe in a displacement device, and placing the displacement device in an environment at 60 ℃. And (3) saturating the sand filling pipe with deionized water, displacing the deionized water in the sand filling pipe with the prepared treatment fluid, closing a switch before and after the sand filling pipe, and preserving for 48 hours at the temperature of 60 ℃ to finish the coating operation.
The properties of the coated quartz sand were determined: the temperature of the displacement apparatus was lowered to 45 ℃, the sand-packed tube was displaced with 0.5% wt ZL-II aqueous solution, the liquid was received by a centrifuge tube, and the dynamic adsorption behavior of the polymer on the coated quartz sand was measured. The experimental data show that the dynamic adsorption capacity of the coated quartz sand to the polymer is reduced by more than 75 percent compared with the uncoated quartz sand.
[ example 11 ]
116.2 g of allyl alcohol and 20 g of catalyst are added into a reaction kettle, nitrogen is replaced for three times, the temperature is raised to 130 ℃, 701.6 g of ethylene oxide is pressed under the pressure condition, and 233 g of propylene oxide is added after the reaction is finished. Removing volatile substances under reduced pressure, and cooling to normal temperature. Then 1000 ml of methyl tert-butyl ether is added, the mixture is stirred evenly, 362.4 g of allyl bromide Grignard reagent is added dropwise, after 24 hours of reaction at 0 ℃, water is slowly added to stop the reaction, the solid in the reaction liquid is removed by filtration, and then the methyl tert-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 by using a wide pH test paper to be about 3-4, adding a platinum catalyst, heating to 70 ℃, stirring for 1 hour, then slowly dropwise adding trimethoxy silane, and controlling the temperature of the reaction liquid to be not more than 80 ℃ by controlling the dropwise adding rate. After the completion of the dropwise addition, the reaction was terminated after the temperature of the reaction solution was controlled at 70 to 80 ℃ for two hours, and tributoxy-3- [ 3' - (tributoxysilyl) propyl ] polyoxyethylene (EO chain number: 7.97) polyoxypropylene (PO chain number: 2) ether ] propyl silane was discharged after the temperature of the reaction solution was lowered to room temperature.
To 40 g of deionized water, 25. mu.l of concentrated sulfuric acid was added and stirred uniformly, 0.5g of tributoxy-3- [ 3' - (tributoxysilyl) propyl ] polyoxyethylene (EO chain number: 7.97) polyoxypropylene (PO chain number: 2) ether ] propylsilane was added, the mixture was dissolved by stirring, and after prehydrolysis at room temperature with stirring, 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 stirred uniformly. Filling 20-40-mesh quartz sand into a 1-foot glass sand filling pipe, then installing the glass sand filling pipe in a displacement device, and placing the displacement device in an environment at 60 ℃. And (3) saturating the sand filling pipe with deionized water, displacing the deionized water in the sand filling pipe with the prepared treatment fluid, closing a switch before and after the sand filling pipe, and preserving for 48 hours at the temperature of 60 ℃ to finish the coating operation.
The properties of the coated quartz sand were determined: the temperature of the displacement apparatus was lowered to 45 ℃, the sand-packed tube was displaced with 0.5% wt ZL-II aqueous solution, the liquid was received by a centrifuge tube, and the dynamic adsorption behavior of the polymer on the coated quartz sand was measured. The experimental data show that the dynamic adsorption capacity of the coated quartz sand to the polymer is reduced by more than 70 percent compared with the uncoated quartz sand.
TABLE 1 chemical structures of alkoxysilane-terminated polyethers from examples 1-11
Claims (15)
1. An alkoxysilane-terminated polyether comprising any one of the structures represented by the general molecular formula (1):
wherein R is H or
R1、R2、R3And R4Independently selected from hydrogen or C1～C6Any of alkyl, cycloalkyl, alkenyl or aryl of (a); n is the sum of the numbers, and the value range of n is 0-30.
2. The alkoxysilane-terminated polyether of claim 1, wherein R is1、R2、R3And R4Is selected from hydrogen or C1～C6Is more independently preferably selected from hydrogen or C1～C6Any of the alkyl groups of (a).
3. The alkoxysilane-terminated polyether of claim 1, wherein R is4Is selected from hydrogen or/and methyl; the value range of n is 1-30.
4. A process for preparing an alkoxysilane-terminated polyether as claimed in any one of claims 1 to 3, comprising the steps of:
(a) preparation of allyl polyethers
Reacting allyl alcohol and a catalyst under an inert atmosphere with
Carrying out alkoxylation reaction to obtain allyl polyether;
(b) preparation of alkoxysilane-terminated polyethers
Reacting allyl polyether with catalyst and alkoxy silane under acidic condition
Contacting and reacting to obtain the alkoxy silane terminated polyether;
in step (a) it is preferred that: carrying out alkoxylation reaction on allyl alcohol and a catalyst with ethylene oxide and propylene oxide in sequence under the nitrogen atmosphere to obtain allyl polyether; the preferred conditions of the alkoxylation reaction are that the temperature is 80-180 ℃ and the pressure is 0.05-10 MPa;
in step (b) it is preferred that: the acidic condition is adjusted by acetic acid; the temperature of the contact with the allyl polyether is 20-120 ℃, and the duration of the addition 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 a constant temperature of 20 to 120 ℃.
5. A hydrophilic coating chemical comprising a hydrolysate of the alkoxysilane-terminated polyether according to any one of claims 1 to 3.
6. A hydrophilic coating treatment liquid comprising the alkoxysilane-terminated polyether according to any one of claims 1 to 3 and/or a hydrolysate thereof; the pH value of the treatment liquid is less than 7.
7. The hydrophilic coating treatment liquid according to claim 6, characterized in that the pH value is less than 6; further preferably: the treatment liquid preferably comprises the following components in parts by weight: 0.01-30 parts of alkoxy silane terminated polyether and/or hydrolysate thereof; 0.0001-1 part of acid; 20-100 parts of water; more preferably, the scheme is as follows: the acid is preferably any 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 sulfuric acid, hydrochloric acid, phosphoric acid, and nitric acid.
8. A method for producing a hydrophilic coating treatment liquid according to claim 7, comprising the steps of:
dissolving acid into water, adjusting the pH value of the water to 0-4, and then adding the alkoxy silane terminated polyether to obtain the hydrophilic coating treatment liquid.
9. A method for applying a hydrophilic coating treatment fluid, comprising the steps of: coating the quartz sand to be treated with hydrophilic coating treatment fluid of which the mass percentage concentration is 0.01-10 wt% of the alkoxy silane terminated polyether and/or hydrolysate thereof to obtain the hydrophilic coating;
wherein the hydrophilic coating treatment liquid is the hydrophilic coating treatment liquid according to claim 6 or 7 or the hydrophilic coating treatment liquid prepared by the preparation method according to claim 8.
10. A hydrophilic coating treatment fluid comprises the following components in parts by weight:
1)0.01 to 30 parts of the alkoxysilane-terminated polyether and/or the hydrolysate thereof according to any one of claims 1 to 3;
2)0.0001-1 part of acid, wherein,
3) 0-30 parts of inorganic salt;
4) 0-20 parts of organic acid salt;
5)20 to 100 parts of water.
11. The hydrophilic coating treatment liquid according to claim 10, characterized in that the acid is any 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 at least one of hydrochloric acid, sulfuric acid, nitric acid, formic acid, and acetic acid; the inorganic salt is any one of hydrochloride, sulfate, bisulfate, nitrate, phosphate, hydrogen phosphate, dihydrogen phosphate, hydrogen carbonate 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.
12. A method for preparing the hydrophilic coating treatment liquid according to claim 10 or 11, comprising the steps of:
dissolving acid into water, adjusting 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 corresponding inorganic base, inorganic acid salt and organic acid to obtain the hydrophilic coating treatment solution.
13. An application method of hydrophilic coating treatment fluid comprises the step of coating the hydrophilic coating treatment fluid with the alkoxysilane terminated polyether and/or hydrolysate thereof, wherein the mass percentage concentration of the alkoxysilane terminated polyether is 0.05-30 wt%, and the hydrophilic coating treatment fluid is used for coating quartz sand to be treated to obtain a hydrophilic coating; or injecting hydrophilic coating treatment fluid with the mass percentage concentration of 0.05-30 wt% of the alkoxy silane terminated polyether and/or hydrolysate thereof from the oil-water well to the position of the filling sand or the stratum to be treated, and then closing the well;
wherein the hydrophilic coating treatment liquid is the hydrophilic coating treatment liquid according to claim 10 or 11 or the hydrophilic coating treatment liquid prepared by the preparation method according to claim 12.
14. The quartz sand for the oil field comprises quartz sand and a hydrophilic coating; wherein the hydrophilic coating contains the alkoxy silane terminated polyether and/or the hydrolysate thereof described in any one of claims 1 to 2, or is prepared from the treatment solution described in claim 5 or 7.
15. The quartz sand for the oil field as claimed in claim 14, wherein the mass ratio of the quartz sand to the hydrophilic coating is 0.0007: 1-0.4: 1.
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