CN114574183A - 一种co2驱油用咪唑啉-吡啶复合缓蚀剂 - Google Patents
一种co2驱油用咪唑啉-吡啶复合缓蚀剂 Download PDFInfo
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- CN114574183A CN114574183A CN202210137453.3A CN202210137453A CN114574183A CN 114574183 A CN114574183 A CN 114574183A CN 202210137453 A CN202210137453 A CN 202210137453A CN 114574183 A CN114574183 A CN 114574183A
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- imidazoline
- corrosion inhibitor
- oil displacement
- pyridine
- composite corrosion
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- 238000005260 corrosion Methods 0.000 title claims abstract description 96
- 230000007797 corrosion Effects 0.000 title claims abstract description 92
- 239000003112 inhibitor Substances 0.000 title claims abstract description 65
- 239000002131 composite material Substances 0.000 title claims abstract description 44
- 238000006073 displacement reaction Methods 0.000 title claims abstract description 28
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims description 3
- 229910002091 carbon monoxide Inorganic materials 0.000 title claims description 3
- JUJWROOIHBZHMG-UHFFFAOYSA-N pyridine Substances C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 title description 3
- VRGSXVMWDLUSIK-UHFFFAOYSA-N 4,5-dihydro-1h-imidazole;pyridine Chemical compound C1CN=CN1.C1=CC=NC=C1 VRGSXVMWDLUSIK-UHFFFAOYSA-N 0.000 claims abstract description 30
- 229940051841 polyoxyethylene ether Drugs 0.000 claims abstract description 24
- 229920000056 polyoxyethylene ether Polymers 0.000 claims abstract description 24
- -1 benzyl pyridinium chloride quaternary ammonium salt Chemical class 0.000 claims abstract description 23
- SOPAXZNKUHRTNG-UHFFFAOYSA-N 4-(4,5-dihydroimidazol-1-yl)-2H-benzotriazole Chemical compound C1CN(C=N1)C2=CC=CC3=NNN=C32 SOPAXZNKUHRTNG-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000006184 cosolvent Substances 0.000 claims abstract description 10
- 239000004094 surface-active agent Substances 0.000 claims abstract description 10
- 150000003242 quaternary ammonium salts Chemical class 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 8
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 21
- 239000002994 raw material Substances 0.000 claims description 15
- 238000002360 preparation method Methods 0.000 claims description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 10
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 claims description 8
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 claims description 7
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 claims description 7
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 claims description 7
- 239000012964 benzotriazole Substances 0.000 claims description 7
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 7
- 239000004327 boric acid Substances 0.000 claims description 7
- 239000007789 gas Substances 0.000 claims description 7
- 239000000244 polyoxyethylene sorbitan monooleate Substances 0.000 claims description 7
- 235000010482 polyoxyethylene sorbitan monooleate Nutrition 0.000 claims description 7
- 229920000053 polysorbate 80 Polymers 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 230000018044 dehydration Effects 0.000 claims description 5
- 238000006297 dehydration reaction Methods 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- 238000010992 reflux Methods 0.000 claims description 5
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 239000011259 mixed solution Substances 0.000 claims description 4
- MTNDZQHUAFNZQY-UHFFFAOYSA-N imidazoline Chemical compound C1CN=CN1 MTNDZQHUAFNZQY-UHFFFAOYSA-N 0.000 claims description 3
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 2
- 125000000217 alkyl group Chemical group 0.000 claims description 2
- SWLVFNYSXGMGBS-UHFFFAOYSA-N ammonium bromide Chemical compound [NH4+].[Br-] SWLVFNYSXGMGBS-UHFFFAOYSA-N 0.000 claims description 2
- 235000019270 ammonium chloride Nutrition 0.000 claims description 2
- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 claims description 2
- 229940087646 methanolamine Drugs 0.000 claims description 2
- 125000001421 myristyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 2
- CBFCDTFDPHXCNY-UHFFFAOYSA-N octyldodecane Natural products CCCCCCCCCCCCCCCCCCCC CBFCDTFDPHXCNY-UHFFFAOYSA-N 0.000 claims description 2
- 125000000913 palmityl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 2
- APSBXTVYXVQYAB-UHFFFAOYSA-M sodium docusate Chemical group [Na+].CCCCC(CC)COC(=O)CC(S([O-])(=O)=O)C(=O)OCC(CC)CCCC APSBXTVYXVQYAB-UHFFFAOYSA-M 0.000 claims description 2
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 2
- SNRUBQQJIBEYMU-UHFFFAOYSA-N Dodecane Natural products CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 claims 1
- 125000003354 benzotriazolyl group Chemical group N1N=NC2=C1C=CC=C2* 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 13
- VEZUQRBDRNJBJY-UHFFFAOYSA-N cyclohexanone oxime Chemical compound ON=C1CCCCC1 VEZUQRBDRNJBJY-UHFFFAOYSA-N 0.000 abstract description 6
- 239000003129 oil well Substances 0.000 abstract description 6
- 239000002253 acid Substances 0.000 abstract description 4
- 229910052751 metal Inorganic materials 0.000 abstract description 4
- 239000002184 metal Substances 0.000 abstract description 4
- FAXDZWQIWUSWJH-UHFFFAOYSA-N 3-methoxypropan-1-amine Chemical compound COCCCN FAXDZWQIWUSWJH-UHFFFAOYSA-N 0.000 abstract description 3
- 230000020477 pH reduction Effects 0.000 abstract description 3
- 230000002195 synergetic effect Effects 0.000 abstract description 3
- 235000020681 well water Nutrition 0.000 abstract description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 26
- 239000003921 oil Substances 0.000 description 25
- 230000005764 inhibitory process Effects 0.000 description 14
- 239000000203 mixture Substances 0.000 description 14
- 230000000694 effects Effects 0.000 description 9
- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Chemical compound [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 description 9
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 6
- 238000006116 polymerization reaction Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- 230000036961 partial effect Effects 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 description 4
- VQTGXDSSRJKZGO-UHFFFAOYSA-N 2H-benzotriazole 4,5-dihydro-1H-imidazole Chemical compound N1C=NCC1.N1N=NC2=C1C=CC=C2 VQTGXDSSRJKZGO-UHFFFAOYSA-N 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 231100000053 low toxicity Toxicity 0.000 description 3
- ITQTTZVARXURQS-UHFFFAOYSA-N 3-methylpyridine Chemical compound CC1=CC=CN=C1 ITQTTZVARXURQS-UHFFFAOYSA-N 0.000 description 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Natural products NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 2
- 230000000844 anti-bacterial effect Effects 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 239000002332 oil field water Substances 0.000 description 2
- TVDSBUOJIPERQY-UHFFFAOYSA-N prop-2-yn-1-ol Chemical compound OCC#C TVDSBUOJIPERQY-UHFFFAOYSA-N 0.000 description 2
- 150000003222 pyridines Chemical class 0.000 description 2
- 239000002455 scale inhibitor Substances 0.000 description 2
- ZZHIDJWUJRKHGX-UHFFFAOYSA-N 1,4-bis(chloromethyl)benzene Chemical compound ClCC1=CC=C(CCl)C=C1 ZZHIDJWUJRKHGX-UHFFFAOYSA-N 0.000 description 1
- KFJDQPJLANOOOB-UHFFFAOYSA-N 2h-benzotriazole-4-carboxylic acid Chemical compound OC(=O)C1=CC=CC2=NNN=C12 KFJDQPJLANOOOB-UHFFFAOYSA-N 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 150000004996 alkyl benzenes Chemical class 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 150000003851 azoles Chemical class 0.000 description 1
- KCXMKQUNVWSEMD-UHFFFAOYSA-N benzyl chloride Chemical compound ClCC1=CC=CC=C1 KCXMKQUNVWSEMD-UHFFFAOYSA-N 0.000 description 1
- 229940073608 benzyl chloride Drugs 0.000 description 1
- OCBHHZMJRVXXQK-UHFFFAOYSA-M benzyl-dimethyl-tetradecylazanium;chloride Chemical compound [Cl-].CCCCCCCCCCCCCC[N+](C)(C)CC1=CC=CC=C1 OCBHHZMJRVXXQK-UHFFFAOYSA-M 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- XRWMGCFJVKDVMD-UHFFFAOYSA-M didodecyl(dimethyl)azanium;bromide Chemical compound [Br-].CCCCCCCCCCCC[N+](C)(C)CCCCCCCCCCCC XRWMGCFJVKDVMD-UHFFFAOYSA-M 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Chemical group CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 231100000086 high toxicity Toxicity 0.000 description 1
- 150000002460 imidazoles Chemical class 0.000 description 1
- 150000002462 imidazolines Chemical class 0.000 description 1
- 125000002883 imidazolyl group Chemical group 0.000 description 1
- 125000000879 imine group Chemical group 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 125000001477 organic nitrogen group Chemical group 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229940083254 peripheral vasodilators imidazoline derivative Drugs 0.000 description 1
- 229920000768 polyamine Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 150000003856 quaternary ammonium compounds Chemical class 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000009919 sequestration Effects 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000011684 sodium molybdate Substances 0.000 description 1
- 235000015393 sodium molybdate Nutrition 0.000 description 1
- TVXXNOYZHKPKGW-UHFFFAOYSA-N sodium molybdate (anhydrous) Chemical compound [Na+].[Na+].[O-][Mo]([O-])(=O)=O TVXXNOYZHKPKGW-UHFFFAOYSA-N 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/54—Compositions for in situ inhibition of corrosion in boreholes or wells
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
- C09K8/584—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific surfactants
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
- C09K8/594—Compositions used in combination with injected gas, e.g. CO2 orcarbonated gas
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/04—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in markedly acid liquids
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/32—Anticorrosion additives
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/70—Combining sequestration of CO2 and exploitation of hydrocarbons by injecting CO2 or carbonated water in oil wells
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- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
本发明公开了一种CO2驱油用咪唑啉‑吡啶复合缓蚀剂,按质量百分比由以下组分混合而成:苯并三氮唑基咪唑啉聚氧乙烯醚15%~22%、氯化苄基吡啶季铵盐5%~12%、双长链季铵盐5%~9%、烷基二甲基苄铵氯化物3%~6%、甲氧基丙胺3%~7%、环乙酮肟1%~6%、表面活性剂0.3%~0.8%、助溶剂15%~25%、水加至100%;本发明的复合缓蚀剂各组分之间协同作用良好,可有效减缓CO2驱油过程的油井水、含CO2或H2S的采出水、酸化用高浓酸液对油气井管材以及井下金属设备的腐蚀问题。
Description
技术领域
本发明属于缓蚀剂技术领域,具体涉及一种CO2驱油用复合缓蚀剂。
背景技术
二氧化碳的捕集、利用与封存(CCUS)一直是全球能源业界高度关注研究的话题。将CO2注入油层,不仅封存了CO2,还可以大幅度提高油气田采收率,达到CO2减排和油藏高效开发的双赢目的。但是随着CO2强采工艺的应用,CO2腐蚀问题越来越突出:在CO2驱油过程中,由于大量的CO2溶解在原油中,集输管线与油管、套管会遭到异常剧烈的腐蚀,导致管材机械性能恶化和采油相关设备寿命减短,造成巨大经济损失。
采用缓蚀剂技术来抑制普遍存在的CO2腐蚀具有投资低、用量少和无需改变原有设备和工艺流程等优势,可有效减缓上述问题。目前,有机胺类、氮唑类、咪唑类和吡啶类等有机含氮化合物是应用种类最多、用量最大的一类缓蚀剂。李家俊等人以脂肪酸、多乙烯多胺、1,4-双(氯甲基)苯等为原料合成了一种双咪唑啉类缓蚀剂;实验表明其具有较优良的抗CO2和H2S腐蚀能力;当其投加量为20mg/L时,缓蚀率可达到97%以上,现场应用缓蚀效果显著。专利CN107523287以3-甲基吡啶与氯化苄为原料合成了吡啶季铵盐,并以其为主剂,与碘化钾、丙炔醇、直链烷基苯磺酸钠等原料复配,得到一种复合高温酸化缓蚀剂,该缓蚀剂可满足120℃~160℃条件下的的油田酸化要求,且与酸化添加剂、咪唑啉缓蚀剂、其他各类的季铵盐缓蚀剂配伍性良好,施工方便安全。专利CN 101280222公开了以咪唑啉衍生物为主剂,并与吡啶衍生物、钼酸钠、碘化钾、硫脲、丙炔醇等组分复配的一种水溶性缓蚀剂,其在较宽的pH介质中对金属材质均具有缓蚀效果,且成膜性能良好。目前,含氮化合物多以碘化钾、炔醇、硫脲等化合物复配,毒性大,成本高,高效、低毒、环保型缓蚀剂成为研究趋势。
发明内容
本发明的目的在于提供一种原料来源广、性能稳定、缓蚀效果好、易于产业化生产的咪唑啉-吡啶复合缓蚀剂。
为了达到上述目的,本发明所采用的CO2驱油用咪唑啉-吡啶复合缓蚀剂由下述质量百分配比的原料组成:
上述的苯并三氮唑基咪唑啉聚氧乙烯醚的结构式如下所示:
式中5≤n≤15。
上述CO2驱油用咪唑啉-吡啶复合缓蚀剂优选由下述质量百分比的原料组成:
上述苯并三氮唑基咪唑啉聚氧乙烯醚的制备方法为:将4-羧酸基苯并三氮唑、二亚乙基三胺和硼酸加入反应器中,在140~220℃搅拌回流反应3~5h,待脱水完全后降温至60~80℃,在氮气保护下缓慢通入环氧乙烷气体,通完后在80~100℃反应0.5~1h,得到苯并三氮唑基咪唑啉聚氧乙烯醚;其中,所述4-羧酸基苯并三氮唑、二亚乙基三胺、硼酸、环氧乙烷的摩尔比为1:1.05~1.20:0.02~0.05:5~15。
上述双长链季铵盐为双辛基、双癸基、双十二烷基、辛基癸基、辛基十二烷基、癸基十二烷基中任意一种的溴化铵或氯化铵中的任意一种或多种。
上述烷基二甲基苄铵氯化物中的烷基为十二烷基、十四烷基、十六烷基和十八烷基中的任意一种。
上述表面活性剂是烷基酚聚氧乙烯醚(OP-10)与聚氧乙烯脱水山梨醇单油酸酯(TW-80)质量比为1.5~3:1的混合液。
上述助溶剂是甲醇与乙二胺质量比为2~5:1的混合液。
本发明CO2驱油用咪唑啉-吡啶复合缓蚀剂的配制方法为:先按照上述质量百分比将水和助溶剂互溶后,再依次加入苯并三氮唑基咪唑啉聚氧乙烯醚、氯化苄基吡啶季铵盐、双长链季铵盐、烷基二甲基苄铵氯化物、甲氧基丙胺和环乙酮肟,搅拌均匀后加入表面活性剂,搅拌至均匀透明后即可。
本发明相对于现有技术的有益效果如下:
(1)本发明复合缓蚀剂主剂——苯并三氮唑基咪唑啉聚氧乙烯醚结构式中既含有增强吸附作用的苯并三氮唑、咪唑基团、醚键和亚胺基团,又含有改善咪唑啉水溶性的聚氧乙烯醚,能在铜、碳钢、铝等金属表面形成牢固致密的保护膜,防腐蚀作用增强。
(2)本发明复合缓蚀剂中的氯化苄基吡啶季铵盐在金属表面的吸附性强,缓蚀效果高,与主剂复配效果好,可用来制备CO2缓蚀剂、H2S缓蚀剂和酸化缓蚀剂等。
(3)本发明复合缓蚀剂中的双长链季铵盐和烷基二甲基苄铵氯化物协同作用良好,分散-渗透作用强、杀菌效果优、毒性小、同时具有一定的缓蚀作用。
(4)本发明复合缓蚀剂的各组分之间协同作用良好,可有效减缓CO2驱油过程的油井水、含CO2或H2S的采出水、酸化用高浓酸液对油气井管材以及井下金属设备的腐蚀问题。
(5)本发明复合缓蚀剂性能稳定、原料易得、高效低毒。
具体实施方式
下面结合实施例对本发明进一步详细说明,但本发明的保护范围不仅限于这些实施例。
实施例1
以制备CO2驱油用咪唑啉-吡啶复合缓蚀剂1kg为例,它由下述原料组成:
其制备方法为:先将414g水和150g助溶剂互溶后,再依次加入200g苯并三氮唑基咪唑啉聚氧乙烯醚、60g氯化苄基吡啶季铵盐、60g双十二烷基二甲基溴化铵、40g十四烷基二甲基苄铵氯化物、50g甲氧基丙胺和20g环乙酮肟,搅拌均匀后加入6g表面活性剂,搅拌至均匀透明后即可。
上述苯并三氮唑基咪唑啉聚氧乙烯醚的聚合度n=8,其制备方法为:将1mol 4-羧酸基苯并三氮唑、1.05mol二亚乙基三胺和0.03mol硼酸加入反应器中,在140~220℃搅拌回流反应5h,待脱水完全后降温至80℃,在氮气保护下缓慢通入8mol的环氧乙烷气体,通完后在80~90℃反应1h,得到苯并三氮唑基咪唑啉聚氧乙烯醚。
上述表面活性剂是4g烷基酚聚氧乙烯醚(OP-10)与2g聚氧乙烯脱水山梨醇单油酸酯(TW-80)的混合液。
上述助溶剂是120g甲醇与30g乙二胺的混合液。
实施例2
以制备CO2驱油用咪唑啉-吡啶复合缓蚀剂1kg为例,它由下述原料组成:
其制备方法与实施例1相同。
上述苯并三氮唑基咪唑啉聚氧乙烯醚的聚合度n=13,其制备方法为:将1mol 4-羧酸基苯并三氮唑、1.15mol二亚乙基三胺和0.02mol硼酸加入反应器中,在140~220℃搅拌回流反应3.5h,待脱水完全后降温至70℃,在氮气保护下缓慢通入13mol环氧乙烷气体,通完后在90~100℃反应1h,得到苯并三氮唑基咪唑啉聚氧乙烯醚。
上述表面活性剂是6g烷基酚聚氧乙烯醚(OP-10)与2g聚氧乙烯脱水山梨醇单油酸酯(TW-80)的混合液。
上述助溶剂是120g甲醇与60g乙二胺的混合液。
实施例3
以制备CO2驱油用咪唑啉-吡啶复合缓蚀剂1kg为例,它由下述原料组成:
其制备方法与实施例1相同。
上述苯并三氮唑基咪唑啉聚氧乙烯醚的聚合度n=13,其制备方法与实施例2相同。
上述表面活性剂是3g烷基酚聚氧乙烯醚(OP-10)与2g聚氧乙烯脱水山梨醇单油酸酯(TW-80)的混合液。
上述助溶剂是165g甲醇与55g乙二胺的混合液。
实施例4
以制备CO2驱油用咪唑啉-吡啶复合缓蚀剂1kg为例,它由下述原料组成:
其制备方法与实施例1相同。
上述苯并三氮唑基咪唑啉聚氧乙烯醚的聚合度n=10,其制备方法为:将1mol 4-羧酸基苯并三氮唑、1.10mol二亚乙基三胺和0.05mol硼酸加入反应器中,在140~220℃搅拌回流反应4.5h,待脱水完全后降温至65℃,在氮气保护下缓慢通入10mol环氧乙烷气体,通完后在80~90℃反应40min,得苯并三氮唑基咪唑啉聚氧乙烯醚。
上述表面活性剂是3g烷基酚聚氧乙烯醚(OP-10)与2g聚氧乙烯脱水山梨醇单油酸酯(TW-80)的混合液。
上述助溶剂是128g甲醇与32g乙二胺的混合液。
实施例5
以制备CO2驱油用咪唑啉-吡啶复合缓蚀剂1kg为例,它由下述原料组成:
其制备方法与实施例1相同。
上述苯并三氮唑基咪唑啉聚氧乙烯醚的聚合度n=13,其制备方法与实施例4相同,其中环氧乙烷的摩尔数为13mol。
上述表面活性剂是2g烷基酚聚氧乙烯醚(OP-10)与1g聚氧乙烯脱水山梨醇单油酸酯(TW-80)的混合液。
上述助溶剂是150g甲醇与50g乙二胺的混合液。
为了证明本发明的有益效果,发明人模拟CO2驱油过程,采用CCUS油井采出水,在高温高压腐蚀测定仪中对实施例1~5中制备的咪唑啉-吡啶复合缓蚀剂的缓蚀性能进行了测试,同时做不加复合缓蚀剂的空白实验,测试结果见表1。
表1咪唑啉-吡啶复合缓蚀剂在不同CO2分压下的缓蚀性能
注:实验条件:N80,50℃,72h,流速为100r/min,缓蚀剂加量为100mg/L。
由表1可知,在CO2分压为3MPa和5MPa时,加入100mg/L实施例1~5中制备的咪唑啉-吡啶复合缓蚀剂的腐蚀速率较空白腐蚀速率明显降低,缓蚀率均达到90%以上,说明咪唑啉-吡啶复合缓蚀剂可有效抑制一定CO2分压下的CCUS油井采出水对N80的腐蚀。
进一步地,为了证明本发明的有益效果,发明人参照《油田水处理用缓蚀阻垢剂技术规范》(Q/SY 126-2014)标准5.2中的实验方法,对实施例1~5中制备的咪唑啉-吡啶复合缓蚀剂的缓蚀性能进行了测试,测试结果见表2。
表2咪唑啉-吡啶复合缓蚀剂在含CO2/H2S腐蚀介质中的缓蚀性能
复合缓蚀剂 | 复合缓蚀剂加量/(mg/L) | 腐蚀速率/(mm/a) |
实施例1 | 50 | 0.0574 |
实施例2 | 50 | 0.0436 |
实施例3 | 50 | 0.0320 |
实施例4 | 50 | 0.0427 |
实施例5 | 50 | 0.0605 |
空白 | / | 0.1429 |
注:腐蚀介质为含CO2/H2S的油井采出水。
由表2可知,在Q/SY 126-2014标准实验条件下,本发明实施例1~5制备的咪唑啉-吡啶复合缓蚀剂对J55钢片的腐蚀速率满足表1中规定的≤0.076mm/a要求。
所取含CO2/H2S的油井采出水中含有大量的硫酸还原菌(简称SRB),SRB大量繁殖不仅腐蚀管线,而且还会造成地层严重堵塞。进一步地,为了证明本发明的有益效果,发明人将实施例1~5中的双长链季铵盐用其中的烷基二甲基苄铵氯化物代替(对比例A),或将实施例1~5中的烷基二甲基苄铵氯化物用其中的双长链季铵盐代替(对比例B),其它原料组分与实施例1~5相同,,并与实施例一并,分别参照《碎屑岩油藏注水水质推荐指标及分析方法》(SY/T 5329-2012)标准5.6和《油田水处理用缓蚀阻垢剂技术规范》(Q/SY 126-2014)标准5.2中的实验方法进行了杀菌性能和缓蚀性能测试,结果见表3。
表3实施例与替代后的实施例杀菌性能及缓蚀性能对比实验
注:腐蚀介质为含CO2/H2S的油井采出水,复合缓蚀剂加量为50mg/L。
由表3可知,本发明实施例1~5制备的咪唑啉-吡啶复合缓蚀剂的杀SRB性能和缓蚀性能明显优于烷基二甲基苄铵氯化物替代双长链季铵盐、或双长链季铵盐替代烷基二甲基苄铵氯化物后的复合缓蚀剂。
进一步地,为了证明本发明的有益效果,发明人参照《酸化用缓蚀剂性能试验方法及评价指标》(SY/T 5405-2019)标准4中的方法,对实施例1~5中制备的咪唑啉-吡啶复合缓蚀剂的缓蚀性能进行了测试,测试结果见表4。
表4咪唑啉-吡啶复合缓蚀剂在高浓酸液中的缓蚀性能
复合缓蚀剂 | 腐蚀速率/g/(m<sup>2</sup>·h) |
实施例1 | 4.86 |
实施例2 | 3.84 |
实施例3 | 4.55 |
实施例4 | 3.18 |
实施例5 | 3.16 |
注:实验条件:20%HCl,N80,90℃,4h,缓蚀剂加量1.0%。
由表4可知,在20%盐酸介质中,缓蚀剂加量为1.0%时,本发明实施例1~5制备的咪唑啉-吡啶复合缓蚀剂在90℃下对N80试片的腐蚀速率均达到SY/T 5405-2019≤6.00g/(m2·h)的指标要求。
综合表1、表2、表3和表4实验结果,说明本发明实施例1~5制备的咪唑啉-吡啶复合缓蚀剂一定CO2分压下的CCUS采出水中、含CO2/H2S腐蚀介质中以及高浓酸液中均具有良好的缓蚀性能。
Claims (7)
3.根据权利要求1或2所述的CO2驱油用咪唑啉-吡啶复合缓蚀剂,其特征在于所述苯并三氮唑基咪唑啉聚氧乙烯醚的制备方法为:将4-羧酸基苯并三氮唑、二亚乙基三胺和硼酸加入反应器中,在140~220℃搅拌回流反应3~5h,待脱水完全后降温至60~80℃,在氮气保护下缓慢通入环氧乙烷气体,通完后在80~100℃反应0.5~1h,得到苯并三氮唑基咪唑啉聚氧乙烯醚;其中,所述4-羧酸基苯并三氮唑、二亚乙基三胺、硼酸、环氧乙烷的摩尔比为1:1.05~1.20:0.02~0.05:5~15。
4.根据权利要求1或2所述的CO2驱油用咪唑啉-吡啶复合缓蚀剂,其特征在于:所述双长链季铵盐为双辛基、双癸基、双十二烷基、辛基癸基、辛基十二烷基、癸基十二烷基中任意一种的溴化铵或氯化铵中的任意一种或多种。
5.根据权利要求1或2所述的CO2驱油用咪唑啉-吡啶复合缓蚀剂,其特征在于:所述烷基二甲基苄铵氯化物中的烷基为十二烷基、十四烷基、十六烷基和十八烷基中的任意一种。
6.根据权利要求1或2所述的CO2驱油用咪唑啉-吡啶复合缓蚀剂,其特征在于:所述表面活性剂是烷基酚聚氧乙烯醚与聚氧乙烯脱水山梨醇单油酸酯质量比为1.5~3:1的混合液。
7.根据权利要求1或2所述的CO2驱油用咪唑啉-吡啶复合缓蚀剂,其特征在于:所述助溶剂是甲醇与乙二胺质量比为2~5:1的混合液。
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