CN107165605B - A kind of anti-incrustation corrosion inhibitor and preparation method thereof - Google Patents
A kind of anti-incrustation corrosion inhibitor and preparation method thereof Download PDFInfo
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- CN107165605B CN107165605B CN201710345795.3A CN201710345795A CN107165605B CN 107165605 B CN107165605 B CN 107165605B CN 201710345795 A CN201710345795 A CN 201710345795A CN 107165605 B CN107165605 B CN 107165605B
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- component
- injection
- corrosion inhibitor
- pipeline
- incrustation corrosion
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- 238000005260 corrosion Methods 0.000 title claims abstract description 121
- 230000007797 corrosion Effects 0.000 title claims abstract description 120
- 239000003112 inhibitor Substances 0.000 title claims abstract description 108
- 238000002360 preparation method Methods 0.000 title claims description 5
- 238000002347 injection Methods 0.000 claims abstract description 264
- 239000007924 injection Substances 0.000 claims abstract description 264
- 229920000642 polymer Polymers 0.000 claims abstract description 76
- 238000000034 method Methods 0.000 claims abstract description 35
- 239000002455 scale inhibitor Substances 0.000 claims abstract description 29
- 239000007921 spray Substances 0.000 claims abstract description 29
- 239000000463 material Substances 0.000 claims abstract description 27
- CKLJMWTZIZZHCS-REOHCLBHSA-N L-aspartic acid Chemical compound OC(=O)[C@@H](N)CC(O)=O CKLJMWTZIZZHCS-REOHCLBHSA-N 0.000 claims description 45
- 235000003704 aspartic acid Nutrition 0.000 claims description 43
- OQFSQFPPLPISGP-UHFFFAOYSA-N beta-carboxyaspartic acid Natural products OC(=O)C(N)C(C(O)=O)C(O)=O OQFSQFPPLPISGP-UHFFFAOYSA-N 0.000 claims description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 42
- 239000002585 base Substances 0.000 claims description 35
- ZYTLVZLMEKVOCT-UHFFFAOYSA-N 4-oxo-4-phenylmethoxy-3-sulfobutanoic acid Chemical compound C1=CC=C(C=C1)COC(=O)C(CC(=O)O)S(=O)(=O)O ZYTLVZLMEKVOCT-UHFFFAOYSA-N 0.000 claims description 32
- 150000003242 quaternary ammonium salts Chemical class 0.000 claims description 31
- 239000001509 sodium citrate Substances 0.000 claims description 30
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 claims description 30
- 239000006185 dispersion Substances 0.000 claims description 27
- 239000000243 solution Substances 0.000 claims description 27
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 18
- 239000007788 liquid Substances 0.000 claims description 18
- 150000005846 sugar alcohols Polymers 0.000 claims description 18
- 239000004593 Epoxy Substances 0.000 claims description 13
- 229920001897 terpolymer Polymers 0.000 claims description 13
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 12
- 238000010992 reflux Methods 0.000 claims description 12
- DCEMCPAKSGRHCN-UHFFFAOYSA-N oxirane-2,3-dicarboxylic acid Chemical compound OC(=O)C1OC1C(O)=O DCEMCPAKSGRHCN-UHFFFAOYSA-N 0.000 claims description 10
- 235000011044 succinic acid Nutrition 0.000 claims description 10
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 9
- 150000003444 succinic acids Chemical class 0.000 claims description 9
- 230000008859 change Effects 0.000 claims description 8
- 230000002829 reductive effect Effects 0.000 claims description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 7
- 239000002262 Schiff base Substances 0.000 claims description 6
- 150000004753 Schiff bases Chemical class 0.000 claims description 6
- 238000009826 distribution Methods 0.000 claims description 5
- 235000019441 ethanol Nutrition 0.000 claims description 4
- KNKRKFALVUDBJE-UHFFFAOYSA-N 1,2-dichloropropane Chemical compound CC(Cl)CCl KNKRKFALVUDBJE-UHFFFAOYSA-N 0.000 claims description 3
- 229920001577 copolymer Polymers 0.000 claims description 3
- MSJMDZAOKORVFC-UAIGNFCESA-L disodium maleate Chemical compound [Na+].[Na+].[O-]C(=O)\C=C/C([O-])=O MSJMDZAOKORVFC-UAIGNFCESA-L 0.000 claims description 3
- 238000011049 filling Methods 0.000 claims description 3
- ZUHZZVMEUAUWHY-UHFFFAOYSA-N n,n-dimethylpropan-1-amine Chemical compound CCCN(C)C ZUHZZVMEUAUWHY-UHFFFAOYSA-N 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000006116 polymerization reaction Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- ULUAUXLGCMPNKK-UHFFFAOYSA-N Sulfobutanedioic acid Chemical compound OC(=O)CC(C(O)=O)S(O)(=O)=O ULUAUXLGCMPNKK-UHFFFAOYSA-N 0.000 claims description 2
- UENWRTRMUIOCKN-UHFFFAOYSA-N benzyl thiol Chemical compound SCC1=CC=CC=C1 UENWRTRMUIOCKN-UHFFFAOYSA-N 0.000 claims description 2
- 238000004108 freeze drying Methods 0.000 claims description 2
- 230000001360 synchronised effect Effects 0.000 claims description 2
- NIDNOXCRFUCAKQ-UMRXKNAASA-N (1s,2r,3s,4r)-bicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid Chemical compound C1[C@H]2C=C[C@@H]1[C@H](C(=O)O)[C@@H]2C(O)=O NIDNOXCRFUCAKQ-UMRXKNAASA-N 0.000 claims 1
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 claims 1
- 238000004821 distillation Methods 0.000 claims 1
- 239000000203 mixture Substances 0.000 description 33
- 230000005764 inhibitory process Effects 0.000 description 28
- 230000000694 effects Effects 0.000 description 25
- 239000007789 gas Substances 0.000 description 17
- 239000000126 substance Substances 0.000 description 17
- 239000003795 chemical substances by application Substances 0.000 description 10
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 8
- 230000015556 catabolic process Effects 0.000 description 8
- 238000006731 degradation reaction Methods 0.000 description 8
- 230000006399 behavior Effects 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 239000002253 acid Substances 0.000 description 6
- 239000003513 alkali Substances 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 6
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 6
- 150000002576 ketones Chemical class 0.000 description 6
- 239000000843 powder Substances 0.000 description 6
- 230000035484 reaction time Effects 0.000 description 6
- 241000432824 Asparagus densiflorus Species 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- DWNBOPVKNPVNQG-LURJTMIESA-N (2s)-4-hydroxy-2-(propylamino)butanoic acid Chemical compound CCCN[C@H](C(O)=O)CCO DWNBOPVKNPVNQG-LURJTMIESA-N 0.000 description 4
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 description 4
- 238000010304 firing Methods 0.000 description 4
- 239000003129 oil well Substances 0.000 description 4
- 125000003367 polycyclic group Chemical group 0.000 description 4
- KDYFGRWQOYBRFD-UHFFFAOYSA-N succinic acid Chemical compound OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 4
- 150000003751 zinc Chemical class 0.000 description 4
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 3
- LUFPJJNWMYZRQE-UHFFFAOYSA-N benzylsulfanylmethylbenzene Chemical compound C=1C=CC=CC=1CSCC1=CC=CC=C1 LUFPJJNWMYZRQE-UHFFFAOYSA-N 0.000 description 3
- 239000000470 constituent Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 230000002401 inhibitory effect Effects 0.000 description 3
- 239000005416 organic matter Substances 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 229910000391 tricalcium phosphate Inorganic materials 0.000 description 3
- CFPOJWPDQWJEMO-UHFFFAOYSA-N 2-(1,2-dicarboxyethoxy)butanedioic acid Chemical compound OC(=O)CC(C(O)=O)OC(C(O)=O)CC(O)=O CFPOJWPDQWJEMO-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- RGHNJXZEOKUKBD-SQOUGZDYSA-N D-gluconic acid Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C(O)=O RGHNJXZEOKUKBD-SQOUGZDYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical group [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 229920002892 amber Polymers 0.000 description 2
- 229910052925 anhydrite Inorganic materials 0.000 description 2
- 229940009098 aspartate Drugs 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910052923 celestite Inorganic materials 0.000 description 2
- 230000000593 degrading effect Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000000116 mitigating effect Effects 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 239000012266 salt solution Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000001052 transient effect Effects 0.000 description 2
- 238000005292 vacuum distillation Methods 0.000 description 2
- TUSDEZXZIZRFGC-UHFFFAOYSA-N 1-O-galloyl-3,6-(R)-HHDP-beta-D-glucose Natural products OC1C(O2)COC(=O)C3=CC(O)=C(O)C(O)=C3C3=C(O)C(O)=C(O)C=C3C(=O)OC1C(O)C2OC(=O)C1=CC(O)=C(O)C(O)=C1 TUSDEZXZIZRFGC-UHFFFAOYSA-N 0.000 description 1
- 235000005979 Citrus limon Nutrition 0.000 description 1
- 244000131522 Citrus pyriformis Species 0.000 description 1
- 241001677188 Coccus viridis Species 0.000 description 1
- RGHNJXZEOKUKBD-UHFFFAOYSA-N D-gluconic acid Natural products OCC(O)C(O)C(O)C(O)C(O)=O RGHNJXZEOKUKBD-UHFFFAOYSA-N 0.000 description 1
- 239000001263 FEMA 3042 Substances 0.000 description 1
- 241001597008 Nomeidae Species 0.000 description 1
- LRBQNJMCXXYXIU-PPKXGCFTSA-N Penta-digallate-beta-D-glucose Natural products OC1=C(O)C(O)=CC(C(=O)OC=2C(=C(O)C=C(C=2)C(=O)OC[C@@H]2[C@H]([C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)O2)OC(=O)C=2C=C(OC(=O)C=3C=C(O)C(O)=C(O)C=3)C(O)=C(O)C=2)O)=C1 LRBQNJMCXXYXIU-PPKXGCFTSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- MDVUQSWBRKRIBG-UHFFFAOYSA-N [S]CC1=CC=CC=C1 Chemical compound [S]CC1=CC=CC=C1 MDVUQSWBRKRIBG-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 239000001506 calcium phosphate Substances 0.000 description 1
- 229910000389 calcium phosphate Inorganic materials 0.000 description 1
- 235000011010 calcium phosphates Nutrition 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000000174 gluconic acid Substances 0.000 description 1
- 235000012208 gluconic acid Nutrition 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- TVHALOSDPLTTSR-UHFFFAOYSA-H hexasodium;[oxido-[oxido(phosphonatooxy)phosphoryl]oxyphosphoryl] phosphate Chemical compound [Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[O-]P([O-])(=O)OP([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O TVHALOSDPLTTSR-UHFFFAOYSA-H 0.000 description 1
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical group [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000001384 succinic acid Substances 0.000 description 1
- 229920002258 tannic acid Polymers 0.000 description 1
- LRBQNJMCXXYXIU-NRMVVENXSA-N tannic acid Chemical compound OC1=C(O)C(O)=CC(C(=O)OC=2C(=C(O)C=C(C=2)C(=O)OC[C@@H]2[C@H]([C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)O2)OC(=O)C=2C=C(OC(=O)C=3C=C(O)C(O)=C(O)C=3)C(O)=C(O)C=2)O)=C1 LRBQNJMCXXYXIU-NRMVVENXSA-N 0.000 description 1
- 229940033123 tannic acid Drugs 0.000 description 1
- 235000015523 tannic acid Nutrition 0.000 description 1
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- LRXTYHSAJDENHV-UHFFFAOYSA-H zinc phosphate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O LRXTYHSAJDENHV-UHFFFAOYSA-H 0.000 description 1
- 229910000165 zinc phosphate Inorganic materials 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
- E21B41/02—Equipment or details not covered by groups E21B15/00 - E21B40/00 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
- C09K8/52—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
- C09K8/528—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning inorganic depositions, e.g. sulfates or carbonates
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Geochemistry & Mineralogy (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The present invention relates to a kind of scale inhibitor methods for oil/gas well, scale inhibitor method is by least one component of anti-incrustation corrosion inhibitor by including at least input unit, injecting unit and the anti-incrustation corrosion inhibitor device of control unit inject oil/gas well in the asynchronous mode of timesharing, wherein, at least one component of anti-incrustation corrosion inhibitor is injected injecting unit at least one the injection pipeline connecting with injecting unit by input unit in a manner of pressurizeing, control unit is according to the quality proportionings of at least one component materials of anti-incrustation corrosion inhibitor, the concentration and/or viscosity of component determine the injection rate ratio of at least one component and generate the control information with time correlation, the injecting unit coupled with well head includes main aperture road, taper separating tube for dispersed polymeres is at least one for controlling each component injection rate in anti-incrustation corrosion inhibitor, spray angle and/or The input hole of the resistance valve of injection direction.
Description
Technical field
The present invention relates to anti-incrustation corrosion inhibitor technical field more particularly to a kind of anti-incrustation corrosion inhibitor and preparation method thereof and it is used for
The scale inhibitor method of oil/gas well.
Background technique
Anti-incrustation corrosion inhibitor is one kind of antisludging agent, be can pre- scale-deposit-preventing or dirt generate or its generation after prevent its life
A kind of chemical assistant of long precipitating.Mainly there are the classifications such as Quadrafos, phosphoric acid organic matter, gluconic acid and tannic acid.Now,
In cooling water recirculation system, using it is relatively broad be phosphorus system scale inhibitor agent prescription, but the discharge of phosphorus can generate wawter bloom
And red tide phenomenon, destroy the ecological balance of rivers and lakes and ocean.For the requirement for responding national sustainable development, each manufacturer
It will accelerate the Green Process of scale inhibitor agent prescription, fall over each other to develop low-phosphorous, nitrogen-free and more function with biological degradation function
It can green scale and corrosion inhibitor.
Oilfield sewage salinity and sour corrosion gas content are higher.Since the moisture content of most of oil well produced liquid is
90% or more, oil well pipe fouling is serious, and water quality fails overall up to standard, injection device, oil-water well pipeline and surface gathering and transferring in addition
Piping corrosion phenomenon is serious, or even causes to perforate and scrap, and has severely impacted the normal production in oil field, and economic loss is huge.
Currently, injection method adds liquid corrosion inhibitor to be a kind of oil field commonly anti-corrosion measure.But ask more there are following: 1) current scale inhibition is slow
It is bad to lose the most heat resistance of agent, under high-alkali, high metal content, high temperature (120 DEG C~140 DEG C), to Ca2+、Cl-Ion tolerance
It spends lower；2) contain zinc salt ingredient, zinc salts precipitate easy to form；3) environment is polluted, secondary pollution of water is caused, is unfavorable for nature
The protection of environment.Therefore, there is an urgent need to one kind to not only improve protection environment in the market, and effectively avoid Ca3(PO4)2The shape of dirt
At the anti-incrustation corrosion inhibitor of raising scale inhibition efficiency.
Summary of the invention
It will cause near wellbore zone blocking after oil well fouling and restrict reservoir potential and play, it is abnormal to also result in oil well production,
Influence is excused from a college course the phase, mixes anti-incrustation corrosion inhibitor uniformly according to the proportion in well and be attached on the borehole wall to prevent fouling to be one
It is a to be difficult the technical issues of solving.
For the deficiencies of the prior art, the present invention provides a kind of scale inhibitor method for oil/gas well, which is characterized in that
The scale inhibitor method is by least one component of anti-incrustation corrosion inhibitor by including at least input unit, injecting unit and control
The anti-incrustation corrosion inhibitor device of unit injects the oil/gas well in the asynchronous mode of timesharing, wherein the input unit delays scale inhibition
It loses at least one the injection pipeline of at least one component of agent connecting with the injecting unit and injects institute in a manner of pressurizeing
State injecting unit, described control unit is according to the quality proportionings of at least one component materials of the anti-incrustation corrosion inhibitor, described group
The concentration and/or viscosity divided determine the injection rate ratio of at least one component and the control generated with time correlation is believed
Breath, the injecting unit coupled with well head include main aperture road, for the taper separating tube of dispersed polymeres and at least one use
In the input hole for controlling the resistance valve of each component injection rate, spray angle and/or injection direction in the anti-incrustation corrosion inhibitor, institute
Control information of the resistance valve based on described control unit is stated at different angles for each group not inverted in the anti-incrustation corrosion inhibitor
Divide and injects the oil/gas well by the multiple dispersion holes being distributed on the separating tube according to specified rate synchronous.The present invention separates
The setting of pipe is conducive to the reaction of polymer so that the polymer in anti-incrustation corrosion inhibitor is avoided being inverted and be degraded, and it is slow to improve scale inhibition
Lose the scale inhibition effect of agent.The inversion of the inversion of component, especially polymers compositions, the influence to its effect are very big.It is therefore prevented that
Component inversion is important technical problem.The present invention determines injection rate for concentration, the viscosity of component, so that component is being injected
In the process will not be due to uncomfortable speed and there is a situation where blocking or stopping, injection process is more stable, effective solution
Injection component is in injection process the technical issues of pressure transient, injection pipeline blocking.
Preferably, described control unit is based on the Flowing characteristic parameters difference and correspondence between at least one component
The difference in length of intake pipeline assess the component in the flowing duration difference of intake pipeline, and be based on the flowing duration
The injection length interval of difference and the component adjusts the input time interval between at least one component.Component it is defeated
Angle of incidence interval combines flowing duration difference to form injection length interval.Time interval appraisal procedure of the invention can shorten note
The injection length interval for penetrating unit avoids the too long caused time waste in input time interval, improves the input frequency of component
Rate also avoids component and fails and cannot react with the component being subsequently implanted within the limited time.Scale inhibition of the invention
Corrosion inhibition method it is more efficient, effect is more preferable.
Preferably, point on viscosity parameter and the matched separating tube of the described control unit based on the component
The distribution density for dissipating hole array determines the injection rate and jet angle of the intake pipeline and the resistance valve that convey the component
Degree, so that the component, which is ejected through specified dispersion hole array according to specified injection rate and spray angle, injects the oil
Gas well.Injection pipeline is provided with different physical structures, can be injected for the polymeric components of different viscosities parameter.Control
The case where unit processed selects the injection pipeline of structure matching according to the viscosity parameter of component, can not only reduce blocking, Er Qieneng
Enough injection rates and injection pressure of raising component reduce the pressure that injection pipeline needs to bear and are damaged with injection pipeline pressure-bearing
Probability.The injection pipeline of appropriate physical structure also avoids the degradation and variation of constituent chemical components, stabilizes the resistance of component
Dirty effect.Being provided with for dispersion hole is conducive to slow down the speed of component on separating tube, avoids the degradation of polymer.The density of dispersion hole
It is selected according to the viscosity of component, injection rate, injection direction.For the polymers compositions of different viscosities, dispersion hole can
Effectively polymers compositions is avoided to degrade before the reaction.Moreover, the setting of separating tube can stop opposite two kinds sprayed
There is a situation where mutually rushing, the injection pressure and injection rate for avoiding intake pipeline are affected component.
Preferably, included angle of the described control unit based on the input hole and hole wall, preset injection rate, injection
The injection track of component described in the viscosity estimation of angle and component, and adjusted based on the injection track and injecting time
The spray angle and injection rate of at least one component, so that the injection track of default at least two components separated is in institute
Stating injecting time does not have the angle of intersection injection pipeline and hole wall to the spray of component with its injection track in the case where intersection yet
Firing rate rate has an impact.And the chemical component of component will be caused due to injection with the unmatched injection rate of the flow behavior of component
Time changes and is affected.Therefore, can be made according to the angle that the flow behavior of component adjusts injection pipeline and hole wall
Component is injected within effective time, particularly avoids the degradation and variation of polymers compositions, avoids scale inhibitor effect due to note
The influence of the angle of incidence and reduce.Appropriate injection length and reaction time can guarantee anti-incrustation corrosion inhibitor progress when effect is best
Scale removal.
Preferably, input hole described at least one of described injecting unit is set to the main aperture in a non-symmetrical way
The different level position of the hole wall in road, the injecting unit are made based on the difference and difference in height of the input hole and hole wall angle
Each component of the anti-incrustation corrosion inhibitor is sprayed from the input hole by time-sharing format and is injected, and the height based on the input hole
Spend the input time interval between difference and spray angle difference at least two components of pre-adjusting.Control unit of the invention is not
Time interval is calculated according only to the reaction time, and time interval is calculated according to the difference in height of input hole.Be conducive to hinder in this way
The abundant reaction of dirty corrosion inhibiter each component reduces prefixed time interval and is actually implanted into the time error of situation, to guarantee
The injection length of component and reaction time, so that the component injection timing of anti-incrustation corrosion inhibitor is accurate.
Preferably, be at least connected between the input unit and the injecting unit for water filling water inject pipeline and
Each component Flowing characteristic parameters of its radial dimension and the anti-incrustation corrosion inhibitor matched first injection pipeline, the second injection pipe
Line and third inject pipeline, and the horizontal position that the water injects the corresponding input hole of pipeline is higher than the first injection pipeline, institute
The horizontal position for stating the input hole of the second injection pipeline and third injection pipeline, for inputting the first input of the first component
The horizontal position of first input hole of pipeline is lower than the water of the second input hole of the second injection pipeline for inputting the second component
Prosposition is set, and the third input hole that the third for inputting third component injects pipeline is lower than the horizontal position of second input hole
So that water, first component, the second component and third component are implanted sequentially in the oil/gas well.The horizontal position of input hole is not
With make component injection when by gravity influenced difference, it is not identical hence into the speed of dispersion hole so that different component
Separating tube can be sequentially entered to be dispersed and be injected, without interacting between component, reduce scale inhibition efficiency.It is preferred that
, it is described first injection pipeline, second injection pipeline and the third injection pipeline and hole wall angle according to injection rate according to
Secondary reduced direction change is implanted sequentially in the oil/gas well so that corresponding to the component injected by the injection pipeline, alternatively,
It is described first injection pipeline with it is described second inject pipeline in a manner of identical with the angle of hole wall by least two components simultaneously
Inject the separating tube, the angle of the angle and third injection pipeline of the first injection pipeline and hole wall and hole wall according to
The direction change that injection rate is sequentially reduced is so that the third injects the third component of pipeline injection and by first note
Enter pipeline and second injection concurrently injected first component of pipeline and the injection length of the second component forms the time difference.Component
Substance is implanted sequentially, so that after releasing the scale inhibition of organic matter and inorganic matter of oil/gas well, it is slow to improve scale inhibition for anti-incrustation corrosion inhibitor
Lose the scale inhibitor effect of agent.
In order to enable anti-incrustation corrosion inhibitor to play scale inhibition effect in hot environment, the component materials of the anti-incrustation corrosion inhibitor are extremely
It less include that benzyl sulfosuccinate, Gemini schiff's base type quaternary ammonium salt, sodium citrate, four poly-epoxy succinic acids and aspartic acid are poly-
Close object, wherein the mass percent of the benzyl sulfosuccinate are as follows: 20~30%；The Gemini schiff's base type quaternary ammonium salt
Mass percent are as follows: 15~25%；The mass percent of the sodium citrate are as follows: 15~20%；The four poly- epoxy succinic
The mass percent of acid are as follows: 15~25%；The mass percent of the aspartic acid polymers are as follows: 0.5~15%.Of the invention
Anti-incrustation corrosion inhibitor can carry out scale removal in high-alkali, high metal content, hot environment, improve the efficiency of scale removal.
Preferably, the benzyl sulfosuccinate is prepared via a method which: by maleic acid disodium salt and benzyl sulphur
Alcohol, which is added in ethyl alcohol and is heated to reflux according to 1:1 molar ratio, obtains benzyl sulfosuccinate solution for 6~12 hours, by the benzyl
Sulfosuccinate solution is placed on to be lyophilized in freeze dryer and be made；The Gemini schiff's base type quaternary ammonium salt is to be prepared via a method which
: by salicylide and N, N- dimethyl propylamine is added in methanol according to the ratio of 1:1.2 and is heated to reflux 1~4 hour, will add
Solution after heat reflux is filtered and dries, and obtains schiff bases, by the schiff bases and 1,2- dichloropropane according to 2:1 matter
Amount proportion, which is added in acetone soln, melts, and at least one drop dimethylformamide is added dropwise into the ketone solution, will be described
Ketone solution carries out vacuum distillation to remove ketone and dimethylformamide after being heated to reflux 6~12 hours, obtain Gemini
Schiff's base type quaternary ammonium salt.
Preferably, the aspartic acid polymers include copolymer, the asparagus fern of one or more aspartic acid based polyalcohols
The terpolymer of propylhomoserin based polyalcohol, aspartic acid based polyalcohol derivative, the aspartic acid based polyalcohol with sealing end and
The soluble-salt of aspartic acid based polyalcohol；The aspartic acid polymers further include having the offer of the prescribed concentration asparagus fern
The aspartic acid polymers liquid of propylhomoserin polymer and/or aspartate, the concentration model of the aspartic acid polymers liquid
Enclose is 1.0 × 10-6Ppm to 1.0 × 104ppm。
Advantageous effects of the invention:
(1) there is good anticorrosive and scale inhibition effect, it is applied widely, it is particularly suitable for high-alkali, high metal content, height
Warm environment (120 DEG C~140 DEG C), to Ca2+、Cl-Ion tolerance is high；
(2) Ca is effectively avoided3(PO4)2The formation of dirt, more efficient raising scale inhibition efficiency；Anti-incrustation corrosion inhibitor of the invention is not
It is only capable of inhibiting CaCO3、CaSO4Formation, while to BaSO4、SrSO4Also there is good inhibiting effect；
(3) zinc salt ingredient is not contained, the formation of zinc salts precipitate is avoided；
(4) environmentally protective, it is not phosphorous, it not will cause secondary pollution of water；
(5) anti-incrustation corrosion inhibitor device mixes the polymers compositions of anti-incrustation corrosion inhibitor uniformly according to the proportion of restriction, makes to hinder
Dirty corrosion inhibiter is evenly distributed in well or the borehole wall.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of anti-incrustation corrosion inhibitor injected system of the invention；
Fig. 2 is the structural schematic diagram of injecting unit；With
Fig. 3 is another structural schematic diagram of injecting unit.
Reference signs list
10: supply unit 20: injecting unit 30: well head
40: main aperture road 11: water injects pipeline 12: the first and injects pipeline
13: the second injection pipelines 14: third injects pipeline 15: water resistance valve
16: the first resistance valve, 17: the second resistance valve 18: third resistance valve
50: the four injection 51: the four resistance valves 60 of pipeline: separating tube
61: injection space 70: control unit
Specific embodiment
It is described in detail with reference to the accompanying drawing.
Embodiment 1
The present invention provides a kind of anti-incrustation corrosion inhibitor.Especially one kind will form the scale inhibition by anti-incrustation corrosion inhibitor device 100
The anti-incrustation corrosion inhibitor that at least one component materials of corrosion inhibiter are injected and are mixed to form in well with certain proportion.Such as Fig. 1 institute
Show, the anti-incrustation corrosion inhibitor device 100 includes input unit 10, injecting unit 20 and control unit 70.The input unit 10
At least one component materials for forming the anti-incrustation corrosion inhibitor are injected into institute in a manner of pressurizeing at least one injection pipeline
State injecting unit 20.The injecting unit 20 coupled with well head 30 includes main aperture road 40 and is provided with for controlling injection rate
Resistance valve at least one input hole.The injecting unit 20 is based on the control information of described control unit 70 with specified spray
Firing rate rate in injection well and mixes at least one component materials from the input hole in a manner of spraying.
Input unit 10 is used to store at least one polymer and/or water for forming anti-incrustation corrosion inhibitor, and by polymer
And/or water inputs injecting unit 20 by least one injection pipeline.Injecting unit 20 is used for polymer and/or water with each other
Isolated mode is simultaneously sprayed with the injection rate of restriction into well.Intake pipeline is provided with resistance valve.Water for inputting water is infused
Enter pipeline and be provided with water resistance valve, the injection pipeline for inputting polymer is provided with resistance valve.Control unit 70 is for controlling
The injection rate of resistance valve.Control unit is connect in a wired or wireless manner with injecting unit.
As shown in Fig. 2, injecting unit 2 includes that main aperture road 40 and at least two are arranged on hole wall and radial dystopy each other
Input hole.Preferably, there are four input holes for setting on hole wall.Input hole number on the hole wall of injecting unit of the invention may be used also
It is more to be arranged according to service condition.Input unit 10 is connect by injecting pipeline with input hole.
Preferably, input hole is arranged on the hole wall in the main aperture road, the input hole with the injection pipeline one by one
Corresponding mode connects.Wherein the hole in the main aperture road is arranged in each input hole in such a way that central axes mutually disjoint
On wall, also, it is opposite with the horizontal position of the input hole of injection pipeline connection for inputting liquid composition substance
It is higher in the horizontal position for the input hole being connect with the injection pipeline for inputting powdered form component materials.It is mixing
In the case that the component materials need water, the horizontal position for the input hole being connect with the injection pipeline for inputting water
Set the horizontal position relative to the input hole connecting with the injection pipeline for inputting non-aqueous liquid composition substance
It is higher.The setting of input hole avoids component materials from liquidating injection mutually to influence the mixture homogeneity of component materials.The present invention
Liquid composition substance powdered form component materials top spray, liquid composition substance can be effective with powdered form component materials
Mixing, so that the suspension of powdered form component materials be avoided to become inert matter in the sky.The setting of input hole of the invention avoids group
Substance is divided to liquidate injection mutually to influence the mixture homogeneity of component materials.Liquid composition substance of the invention is in powdered form group
Divide the top injection of substance, liquid composition substance can effectively be mixed with powdered form component materials, to avoid powdered form component
Substance suspension becomes inert matter in the sky.The big top of input hole of liquid composition substance is arranged in water input hole of the invention,
Effectively liquid composition substance can be poured in well or the borehole wall is mixed with other component materials, prevent individual component materials from adhering to
Scale inhibition effect is influenced on the borehole wall.
The polymers compositions of the anti-incrustation corrosion inhibitor of the present embodiment includes benzyl sulfosuccinate, Gemini schiff's base type quaternary ammonium
Salt, sodium citrate, four poly-epoxy succinic acids and aspartic acid polymers.Wherein, the mass percent of benzyl sulfosuccinate are as follows:
20~30%；The mass percent of the Gemini schiff's base type quaternary ammonium salt are as follows: 15~25%；The quality hundred of the sodium citrate
Divide ratio are as follows: 15~20%；The mass percent of four poly-epoxy succinic acid are as follows: 15~25%.
Input unit 10 be provided at least one space store respectively composition anti-incrustation corrosion inhibitor multiple polymers and/or
Water.Preferably, input unit 10 is provided with defeated die block, thus make polymer and/or water with limit pressure from injection pipeline into
Enter injecting unit 20.Preferably, defeated die block includes defeated press pump.Preferably, resistance valve forms one to the fluid of water or polymer
Fixed pressure.
As shown in Fig. 2, the first injection pipeline 11 for being used to convey water is connect by input unit 10 with the first input hole.First
Input hole is provided with water resistance valve 15, the injection rate for the control information adjustment water based on control unit 70.Second injection
The memory space of one end connection benzyl sulfosuccinate of pipeline 12, the other end are connect with the second input hole.Second input hole is set
It is equipped with the second resistance valve 16 of the injection rate for adjusting benzyl sulfosuccinate solution.One end that third injects pipeline 13 connects
The memory space of Gemini schiff's base type quaternary ammonium salt is connect, the other end is connect with third input hole.Third injection pipeline 13 is provided with
For adjusting the third resistance valve 17 of the injection rate of Gemini schiff's base type quaternary ammonium salt solution or benzyl sulfosuccinate powder.
The memory space of one end connection sodium citrate and four poly-epoxy succinic acid mixtures of 4th injection pipeline 14, the other end and the 4th
Input hole connection.4th input hole is provided with the injection rate for adjusting sodium citrate and four poly-epoxy succinic acid mixtures
4th resistance valve 18.Preferably, sodium citrate and four poly-epoxy succinic acid mixtures are by sodium citrate and four poly- epoxy succinics
Acid is mixed to form according to specified quality proportioning.
Preferably, after the completion of input unit 10 is connect by least one injection pipeline with injecting unit 20, starting control
Unit 70 processed.Control unit 70 calculates the injection speed of resistance valve in each injection pipeline according to the specified quality proportioning of polymer
Rate, to form the anti-incrustation corrosion inhibitor with specified proportion after mixing each polymer with water.
Preferably, the quality proportioning of at least one component materials of the described control unit 70 based on the anti-incrustation corrosion inhibitor,
The concentration of the component materials determines the injection rate ratio of at least one component materials.Described control unit 70 is based on extremely
The quality proportioning and/or the injection rate ratio of a kind of few component materials generate the control information with time correlation.The note
Unit 20 is penetrated to be based on the control information starting resistance valve corresponding with the control information and adjust at least one input
The injection rate in hole is to specified injection rate.
For example, control unit 70 determines each component object of anti-incrustation corrosion inhibitor according to the concentration and quality proportioning of component materials
The injection rate ratio of matter is A:B:C:D.Control unit 70 determines different injections according to the component difference of anti-incrustation corrosion inhibitor
Rate ratio, to form the anti-incrustation corrosion inhibitor with different function.
Preferably, control unit 70 determines the component of each component according to the injection rate and injecting time of anti-incrustation corrosion inhibitor
Injection rate and injecting time, to form the control information with time correlation.Control information include anti-incrustation corrosion inhibitor component,
Quality proportioning, concentration of component, the injection rate of anti-incrustation corrosion inhibitor, each component component injection rate and injecting time.It is preferred that
, the control information that injecting unit 20 is sent according to control unit starts corresponding resistance valve and controls component injection rate, makes
Each component is obtained in injection well and to mix in a manner of spraying from input hole.
For example, control unit 70 prestores the component solutions there are three types of anti-incrustation corrosion inhibitor.Component solutions of the invention are not limited to
It three kinds, can be more with type.
The first component solutions includes benzyl sulfosuccinate, Gemini schiff's base type quaternary ammonium salt, sodium citrate, four polycyclics
Oxydisuccinic acid and polysuccinimide.Wherein, the mass percent of benzyl sulfosuccinate are as follows: 20%；The Gemini Schiff
The mass percent of alkaline quaternary ammonium salt are as follows: 15%；The mass percent of the sodium citrate are as follows: 20%；The four polycyclics oxygen amber
The mass percent of amber acid are as follows: 20%, the mass percent of polysuccinimide is 25%.The dibenzylsulfide that input unit 10 conveys
Concentration for succinic acid is that the concentration of 60%, Gemini schiff's base type quaternary ammonium salt is 90%, sodium citrate and four poly- epoxy succinics
For acid with the mixed concentration of 1:1 for 90%, the concentration of polysuccinimide is 90%.Control unit 70 is according to dibenzylsulfide for fourth two
Its spray of the concentration calculation of acid, Gemini schiff's base type quaternary ammonium salt, sodium citrate, four poly-epoxy succinic acids and polysuccinimide
Penetrating rate ratio is 6:3:4:5.The injection rate of first anti-incrustation corrosion inhibitor is V1.
Injecting unit 20 receives the first control information, starts resistance valve corresponding with component, according to injection rate ratio
The mixed of benzyl sulfosuccinate, Gemini schiff's base type quaternary ammonium salt, sodium citrate and four poly-epoxy succinic acids is sprayed for 6:3:4:5
It closes and is mixed in object and aspartic acid polymers to well, form the first anti-incrustation corrosion inhibitor.First anti-incrustation corrosion inhibitor has good anti-
Corrosion and scale inhibition effect, it is applied widely, it is particularly suitable for high-alkali, high metal content, hot environment (120 DEG C~140 DEG C), it is right
Ca2+、Cl-Ion tolerance is high, and effectively avoids Ca3(PO4)2The formation of dirt, more efficient raising scale inhibition efficiency.
Second of component solutions includes benzyl sulfosuccinate, Gemini schiff's base type quaternary ammonium salt, sodium citrate, four polycyclics
Oxydisuccinic acid and terpolymer.Compared with the first component solutions, difference is, terpolymer is inputted by the 5th pipeline
5th input hole.The mass percent of terpolymer is 25%.The concentration of the terpolymer inputted in input unit 10 is
30%, then base sulfosuccinate, Gemini schiff's base type quaternary ammonium salt, sodium citrate, four poly-epoxy succinic acids and terpolymer
Injection rate ratio be 6:3:4:15.
Injecting unit 20 receives the second control information, and the resistance valve for inputting polysuccinimide is closed, is opened simultaneously
For inputting the resistance valve of terpolymer, and according to penetrate rate ratio 6:3:4:15 adjustment benzyl sulfosuccinate,
The injection rate of Gemini schiff's base type quaternary ammonium salt, sodium citrate and four poly-epoxy succinic acid polymer and terpolymer is to well
Inside it is mixed to form the second anti-incrustation corrosion inhibitor.The injection rate of second anti-incrustation corrosion inhibitor is V2.Second anti-incrustation corrosion inhibitor can be effective
Inhibit the formation of scale in well, and environmental sound.The anti-incrustation corrosion inhibitor that second component solutions are formed is suitable for high temperature, high pH
Value, height have excellent inhibition to the deposition of iron oxide, calcium phosphate, trbasic zinc phosphate and calcium carbonate in water with high-alkali condition firmly
Effect.Injecting unit 20 can also be inhibited by changing the injection rate of anti-incrustation corrosion inhibitor and be impacted containing iron, zinc and phosphate
Scale.
The third component solutions includes benzyl sulfosuccinate, Gemini schiff's base type quaternary ammonium salt, sodium citrate, asparagus fern ammonia
Acid-based polymer derivative and terpolymer.Compared with second of component solutions, difference is, aspartic acid based polyalcohol spreads out
Biology inputs the 6th input hole by the 6th pipeline and is sprayed, and sodium citrate inputs the 7th input hole by the 7th pipeline and carries out
Injection.In the quality proportioning of anti-incrustation corrosion inhibitor, the mass percent of sodium citrate are as follows: 20%, aspartic acid based polyalcohol is derivative
The mass percent of object is 15%.The concentration that sodium citrate is inputted in input unit 10 is 90%, aspartic acid based polyalcohol
The concentration of derivative is 30%.Then benzyl sulfosuccinate, Gemini schiff's base type quaternary ammonium salt, sodium citrate, aspartic acid base
The injection rate ratio of polymer derivant and terpolymer are as follows: 6:3:4:9:15.The injection rate of third anti-incrustation corrosion inhibitor
For V3.
Injecting unit 20 receives third and controls information, adjusts resistance corresponding with third component scheme based on third control information
The injection rate of valve is flowed, closure inputs the resistance valve of the 4th input hole of sodium citrate and four poly-epoxy succinic acid polymer, opens
The resistance valve of the 6th input hole and the 7th input hole is opened, so that the component of anti-incrustation corrosion inhibitor is carried out according to third component scheme
Configuration.Injecting unit 20 is poly- according to benzyl sulfosuccinate, Gemini schiff's base type quaternary ammonium salt, sodium citrate, aspartic acid base
The injection rate ratio 6:3:4:9:15 of conjunction object derivative and terpolymer adjusts the injection rate of corresponding resistance valve, thus
Form third anti-incrustation corrosion inhibitor.Third anti-incrustation corrosion inhibitor has good biological degradability, is conducive to environmental protection, can be effective
Disperse calcium carbonate, scale inhibition effect is more preferable.The anti-incrustation corrosion inhibitor that third component scheme is formed can not only bear high-alkali, high metal and contain
Amount, hot environment (120 DEG C~140 DEG C), and can effectively avoid Ca3(PO4)2The formation of dirt, more efficient raising scale inhibition effect
Rate；It can not only inhibit CaCO3、CaSO4Formation, while to BaSO4、SrSO4Also there is good inhibiting effect.
Preferably, injecting unit 20 is passed based on the alternating of the first control information, the second control information and third control information
The component and injection time and sequence of anti-incrustation corrosion inhibitor are sent and change, thus in conjunction with the scale inhibition effect of a variety of anti-incrustation corrosion inhibitors, shape
At efficient, multi-functional anti-incrustation corrosion inhibitor, scale inhibition effectively is carried out to the borehole wall.Control unit 70 controls information, second for first
It controls information and third control information and forms the 4th control information according to time-sequencing.For example, the content of the 4th control information can
To be: information is controlled according to the second control information, the first control information and third is successively executed in a manner of per injection 4 hours,
Second anti-incrustation corrosion inhibitor, the first anti-incrustation corrosion inhibitor and third anti-incrustation corrosion inhibitor are sequentially injected 4 hours into well respectively.
Preferably, control unit 70 can be by the first anti-incrustation corrosion inhibitor, the second anti-incrustation corrosion inhibitor and third anti-incrustation corrosion inhibitor
Setting is repeated according to different injection sequences to form the 4th control information.For example, injection sequence is followed successively by, the first scale inhibition is slow
Erosion agent 3 hours, the second anti-incrustation corrosion inhibitor 5 hours, third anti-incrustation corrosion inhibitor 8 hours, the second anti-incrustation corrosion inhibitor 5 hours, the first resistance
Dirty corrosion inhibiter 5 hours.Setting of the injecting unit 20 based on the 4th control information is by the first anti-incrustation corrosion inhibitor, the second anti-incrustation corrosion inhibitor
With third anti-incrustation corrosion inhibitor according in different injection time, sequence and injection rate injection well, to play scale inhibitor
The optimum efficiency of agent.
Preferably, the material composition of control unit 70 is sent according to the sensor on the borehole wall scale or grease, selection pair
The control information answered is sent to injecting unit 20.Injecting unit 20 is based on control information and injects anti-incrustation corrosion inhibitor.Resistance of the invention
Dirty corrosion inhibiter device can launch anti-incrustation corrosion inhibitor according to the composition characteristics of dirt, to reach optimal scale inhibition effect.
Embodiment 2
The present embodiment is the further improvement to embodiment 1, and duplicate content repeats no more.
In the present embodiment, the separating tube 60 for dispersed polymeres is provided in the main aperture road 40 of injecting unit 20.
As shown in figure 3, the space between the separating tube 60 and hole wall is divided into injection space 61 by separating tube 60.By hole
The polymers compositions of input hole output on wall is dispersed in the injection space 61, and under the effect of the pressure from described
At least one dispersion hole being distributed on separating tube 60 enters the main aperture road 40 and mixes with water.
Separating tube 60 can be cylindrical tube, rectangular tube, pentagon pipe, hexagonal tube or irregular shape pipe.Preferably,
Separating tube 60 is the conical pipe that diameter gradually changes.The axial line of separating tube 60 is vertically arranged.Separating tube 60 in the vertical direction
The lesser one end of diameter be higher than one end for being relatively large in diameter, so that the injection space 61 be made to form V-arrangement annulus.
Preferably, multiple dispersion holes corresponding with the position of input hole are provided on separating tube 60.To make from input hole
The polymer of injection or injection enters injection space 61, and from injection space 61 multiple dispersion holes in the form of dispersing into
Become owner of duct 40.Being provided with for separating tube 60 is conducive to dispersed polymeres again, to make the polymerization for eventually entering into main aperture road 40
Object mixing more evenly, prevents polymer from degrading, prevents polymer from rolling.
Preferably, input hole corresponds at least one dispersion hole, and input hole be distributed in corresponding dispersion hole it is identical
The radial direction in the main aperture road 40.Alternatively, at least one dispersion hole on separating tube 60 be distributed in an array manner it is described
Around the tube wall crosspoint of the axis of input hole and the separating tube 60.Preferably, corresponding one group of each input hole is in circle battle array
The dispersion hole array of column distribution.The center of circular array is located at the axis of input hole and the tube wall crosspoint of the separating tube 60.
Preferably, the first input hole is used for injection water, the vertical height and first of dispersion hole corresponding with the first input hole
The vertical height of input hole is identical.
Preferably, the polymer input hole and the first input hole are distributed on identical vertical line.
Alternatively, the polymer input hole is distributed in column form according to vertical direction and polymer input hole is arranged and to be formed
Vertical line where the axle center of vertical line and first input hole is symmetrical centered on the axis in main aperture road 40.
The polymers compositions of the anti-incrustation corrosion inhibitor of the present embodiment includes at least benzyl sulfosuccinate, Gemini schiff's base type
Quaternary ammonium salt, sodium citrate, four poly-epoxy succinic acids and aspartic acid polymers.Wherein, the quality of the benzyl sulfosuccinate
Percentage are as follows: 20~30%；The mass percent of the Gemini schiff's base type quaternary ammonium salt are as follows: 15~25%；The citric acid
The mass percent of sodium are as follows: 15~20%；The mass percent of four poly-epoxy succinic acid are as follows: 15~25%；The asparagus fern
The mass percent of propylhomoserin polymer are as follows: 0.5~15%.
As shown in figure 3, the first injection pipeline 11 for being used to convey water is connect by input unit 10 with the first input hole.First
Injection pipeline 11 is provided with resistance valve 15, the injection rate for the control information adjustment water based on control unit 70.Second note
Enter the memory space of one end connection benzyl sulfosuccinate of pipeline 12, the other end is connect with the second input hole.Second injection pipe
Line 12 is provided with the second resistance of the injection rate for adjusting benzyl sulfosuccinate solution or benzyl sulfosuccinate powder
Flow valve 16.Third injects the memory space of one end connection Gemini schiff's base type quaternary ammonium salt of pipeline 13, and the other end is defeated with third
Enter hole connection.Third injection pipeline 13 is provided with for adjusting Gemini schiff's base type quaternary ammonium salt solution or dibenzylsulfide for fourth two
The third resistance valve 17 of the injection rate of sour powder.One end connection sodium citrate and four poly- epoxy succinics of 4th injection pipeline 14
The memory space of acid blend, the other end are connect with the 4th input hole.4th injection pipeline 14 is provided with for adjusting citric acid
4th resistance valve 18 of the injection rate of sodium and four poly-epoxy succinic acid mixtures.Preferably, sodium citrate and four polycyclic oxygen ambers
Amber acid blend is to be mixed to form by sodium citrate and four poly-epoxy succinic acids according to specified quality proportioning.5th injection pipe
The memory space of one end connection aspartic acid polymers of line 50, the other end are connect with the 5th input hole.5th injection pipeline 50
It is provided with the 5th resistance valve 51 of the injection rate for adjusting aspartic acid polymers.
First input hole, the second input hole and the 5th input hole vertically rank a column, are located on the first vertical line.Third is defeated
Enter tetra- input hole of Kong Yu row for a column, is located on the second vertical line.First vertical line and the second vertical line can be asymmetric.It is excellent
Choosing, the first vertical line is symmetrical with the axial line in main aperture road 40 with the second vertical line.
Preferably, all input holes on the hole wall in main aperture road 40 are arranged in an irregular pattern.It is poly- for inputting liquid
The vertical height for closing the input hole of object is vertical highly higher than the input hole for inputting powdered form polymer, be conducive to fluid and
Powder is mixed and is poured in well, to prevent polymer powder attached in air.
Preferably, the polymer of each memory space storage of input unit 10 can be single polymer, can also
To be mixed polymer that two or more do not react mutually.Polymer can be the fluid being in a liquid state, be also possible to be in
Solid powder.
Preferably, after the completion of input unit 10 is connect by five injection pipelines with injecting unit 20, starting control is single
Member 70.Control unit 70 calculates injection rate/spray of resistance valve in each injection pipeline according to the specified quality proportioning of polymer
Firing rate rate, to form the anti-incrustation corrosion inhibitor with specified proportion after mixing each polymer with water.
Embodiment 3
The present embodiment is the further improvement to embodiment 1 and embodiment 2, and duplicate content repeats no more.
The present embodiment provides the preparation methods of anti-incrustation corrosion inhibitor.
The polymers compositions of the anti-incrustation corrosion inhibitor of the present embodiment includes at least benzyl sulfosuccinate, Gemini schiff's base type
Quaternary ammonium salt, sodium citrate, four poly-epoxy succinic acids and/or aspartic acid polymers.Wherein, the matter of the benzyl sulfosuccinate
Measure percentage are as follows: 20~30%；The mass percent of the Gemini schiff's base type quaternary ammonium salt are as follows: 15~25%；The lemon
The mass percent of sour sodium are as follows: 15~20%；The mass percent of four poly-epoxy succinic acid are as follows: 15~25%；The day
The mass percent of aspartic acid polymer are as follows: 0.5~15%.
Benzyl sulfosuccinate of the invention is prepared via a method which:
Maleic acid disodium salt and benzyl mercaptan are added in ethyl alcohol according to 1 to 1 molar ratio and are heated to reflux 6~12 hours
To benzyl sulfosuccinate solution, the benzyl sulfosuccinate solution is placed on freeze-drying in freeze dryer and is made.
Gemini schiff's base type quaternary ammonium salt of the invention is prepared via a method which:
By salicylide and N, N- dimethyl propylamine is added in methanol according to the ratio of 1:1.2 and to be heated to reflux 1~4 small
When, the solution after being heated to reflux is filtered and is dried, schiff bases is obtained.
By the schiff bases and 1,2- dichloropropane is added in acetone soln according to the quality proportioning of 2:1 to be melted, and to
At least one drop dimethylformamide is added dropwise in the ketone solution, is carried out after the ketone solution is heated to reflux 6~12 hours
Vacuum distillation obtains Gemini schiff's base type quaternary ammonium salt to remove ketone and dimethylformamide.
Preferably, aspartic acid polymers include the copolymer of one or more aspartic acid based polyalcohols, aspartic acid
The terpolymer of based polyalcohol, aspartic acid based polyalcohol derivative have the aspartic acid based polyalcohol and asparagus fern of sealing end
The soluble-salt of propylhomoserin based polyalcohol.Aspartic acid polymers further include having the offer of the prescribed concentration aspartic acid polymerization
The aspartic acid polymers liquid of object and/or aspartate, the concentration range of the aspartic acid polymers liquid is 1 ×
10-6Ppm to 10000ppm.
Embodiment 4
The present embodiment is the further improvement to embodiment 1, embodiment 2 and embodiment 3, and duplicate content repeats no more.
The present embodiment provides a kind of scale inhibitor method for oil/gas well, scale inhibitor method by anti-incrustation corrosion inhibitor extremely
A kind of few component is asynchronous with timesharing by the anti-incrustation corrosion inhibitor device for including at least input unit, injecting unit and control unit
Mode injects oil/gas well.The present invention is that it is possible to inject the scale inhibition with different component between timesharing using the asynchronous advantage of timesharing
Corrosion inhibiter is without reducing scale inhibitor effect.For example, component A and B component interact, scale removal corrosion mitigating effect is reduced.But B
The best scale inhibitor effect duration of component is 5 minutes.Therefore component A is reinjected after five minutes in B component injection, then A group
The injection divided will not be influenced by B component, or influence very little.If the timesharing injection of component A and B component is implemented to imitate by manually
Rate is low, and interval time error is big.Therefore, each component is injected in the asynchronous mode of timesharing by scale inhibitor device, both
Better scale removal corrosion mitigating effect can be integrally obtained, and can be improved injection efficiency.
Wherein, input unit by least one component of anti-incrustation corrosion inhibitor by connect with injecting unit at least one note
Enter pipeline and inject injecting unit in a manner of pressurizeing, control unit is according to the quality of at least one component materials of anti-incrustation corrosion inhibitor
Proportion, the concentration of component and/or viscosity determine the injection rate ratio of at least one component and generate the control with time correlation
Information, the injecting unit coupled with well head include main aperture road, for the taper separating tube of dispersed polymeres and at least one be used for
Control the input hole of the resistance valve of each component injection rate, spray angle and/or injection direction in anti-incrustation corrosion inhibitor.Choked flow valve base
In control unit control information at different angles by polymers compositions not inverted in anti-incrustation corrosion inhibitor according to specified speed
The asynchronous multiple dispersion holes by being distributed on separating tube of rate inject oil/gas well.The setting of separating tube of the present invention, so that scale inhibitor
Polymer in agent avoids degrading, and is conducive to the reaction of polymer, improves the scale inhibition effect of anti-incrustation corrosion inhibitor.The present invention is directed to group
Point concentration, viscosity determine injection rate so that component will not occur due to uncomfortable speed in injection process blocking or
The case where cutout, injection process is more stable, effective solution injection component pressure transient, injection pipe in injection process
The technical issues of line blocks.The present invention matched by detailed quality of evaluation, the concentration of component, viscosity, each component injection rate,
The mode of spray angle and/or injection direction, the accurate prefixed time interval for assessing each component, is being imitated to control each component
Oil/gas well is injected at the time of power is best.
Preferably, described control unit 70 is based on Flowing characteristic parameters difference between at least one component and right
The difference in length for the intake pipeline answered assesses the component in the flowing duration difference of intake pipeline, and be based on the flowing when
The injection length interval of long difference and the component adjusts the input time interval between at least one component.It is preferred that
, spray angle difference and injection rate difference tune of the injecting unit based on the preset time interval of control unit, injection pipeline
Component each in anti-incrustation corrosion inhibitor is spurted into separating tube in a manner of the dispersion hole of opposite different densities by whole resistance valve.For holding
Easy inverted polymeric components, separating tube can prevent polymers compositions to be inverted that the scale removal efficiency of component will not be reduced.Spray
It penetrates angle difference and injection rate difference has differences the amount of component injection separating tube.Constituent part due to spray angle,
The reason of dispersion hole density of injection rate and separating tube, can not enter separating tube, therefore, be adjusted according to the density of dispersion hole
Spray angle and injection rate enable to component accurately to inject separating tube.Being provided with for dispersion hole is conducive to slow down group on separating tube
The speed divided, avoids the degradation of polymer.The density of dispersion hole is selected according to the viscosity of component, injection rate, injection direction
It selects.For the polymers compositions of different viscosities, dispersion hole can effectively avoid polymers compositions occur before the reaction be inverted and
Degradation.Moreover, the setting of separating tube can stop the opposite two kinds of components sprayed there is a situation where mutually rushing, intake pipeline is avoided
Injection pressure and injection rate be affected.
Preferably, on viscosity parameter and the matched separating tube of the described control unit 70 based on the component
The distribution density for dispersing hole array determines injection rate and the injection for conveying the intake pipeline and the resistance valve of the component
Angle, so that the component is ejected through described in specified dispersion hole array injection according to specified injection rate and spray angle
Oil/gas well.Injection pipeline is provided with different physical structures, can be injected for the polymeric components of different physical properties.
The case where control unit selects the injection pipeline of structure matching according to the physical property of component, can not only reduce blocking, and
The injection rate and injection pressure that can be improved component, reduce injection pipeline need the pressure born and injection pipeline pressure-bearing by
The probability of damage.The injection pipeline of appropriate physical structure also avoids the degradation and variation of constituent chemical components, stabilizes component
Scale inhibition effect.
Preferably, included angle of the described control unit 70 based on the input hole and hole wall, preset injection rate, spray
The injection track of component described in firing angle degree and the viscosity estimation of component, and it is based on the injection track and injecting time tune
The spray angle and injection rate of at least one whole component, so that the injection track of default at least two components separated exists
There is the injecting time its injection track in the case where intersection not have intersection.Folder of the injecting unit based on injection pipeline and hole wall
The injection rate of the flow behavior of angular difference and component adjustment component makes component be injected into separating tube by dispersion hole.Injection
The angle of pipeline and hole wall also has an impact to the injection rate of component.And it must with the unmatched injection rate of the flow behavior of component
The chemical component that will lead to component is affected since injection length changes.Therefore, according to the flow behavior tune of component
The angle of whole injection pipeline and hole wall can be such that component injects within effective time, particularly avoid the degradation and change of polymers compositions
Change, avoid scale inhibitor effect is reduced due to the influence of injection length.Appropriate injection length and reaction time can protect
Card anti-incrustation corrosion inhibitor carries out scale removal when effect is best.
Preferably, input hole described at least one of described injecting unit 20 is set to the master in a non-symmetrical way
The different level position of the hole wall in duct 40.Difference and height of the injecting unit 20 based on the input hole Yu hole wall angle
Difference makes each component of the anti-incrustation corrosion inhibitor spray injection from the input hole by time-sharing format, and is based on the input
The difference in height and spray angle difference in hole pre-adjust the input time interval between at least two components.Control of the invention
Unit calculates time interval not only according to the reaction time, and calculates time interval according to the difference in height of input hole.Have in this way
Conducive to the abundant reaction of anti-incrustation corrosion inhibitor each component, reduce prefixed time interval and the time error for being actually implanted into situation, from
And ensure that injection length and the reaction time of component, so that the component injection timing of anti-incrustation corrosion inhibitor is accurate.
Preferably, the water injection pipe for water filling is at least connected between the input unit 10 and the injecting unit 20
Each component Flowing characteristic parameters of line and its radial dimension and the anti-incrustation corrosion inhibitor matched first injection pipeline, the second note
Enter pipeline and third injection pipeline.The horizontal position that the water injects the corresponding input hole of pipeline is higher than first injection pipe
The horizontal position of the input hole of line, the second injection pipeline and third injection pipeline, for inputting the of the first component
The horizontal position of first input hole of one intake pipeline is lower than the second input of the second injection pipeline for inputting the second component
The horizontal position in hole, the third input hole that the third for inputting third component injects pipeline are lower than the water of second input hole
Prosposition is set so that water, first component, the second component and third component are implanted sequentially in the oil/gas well.Control unit is based on
The storage device and the second specified injection pipeline and/or third of storage component in the flow behavior control input unit of component
Inject pipeline connection, wherein flow behavior can be adjusted in a manner of parameter configuration by control unit.
Preferably, the angle of the first injection pipeline, the second injection pipeline and third injection pipeline and hole wall is according to injection speed
The direction change that rate is sequentially reduced by the component of the corresponding injection of injection pipeline so that be implanted sequentially in oil/gas well, alternatively, first
At least two components are injected separating tube in a manner of identical with the angle of hole wall with the second injection pipeline by injection pipeline simultaneously, the
The angle of angle and third the injection pipeline and hole wall of one injection pipeline and hole wall becomes according to the direction that injection rate is sequentially reduced
Change so that the third component of third injection pipeline injection and injecting pipeline concurrently injected the with second by the first injection pipeline
One component and the injection length of the second component form the time difference.Component materials are implanted sequentially, so that anti-incrustation corrosion inhibitor is releasing
After the organic matter of oil/gas well and the scale inhibition of inorganic matter, the scale inhibitor effect of anti-incrustation corrosion inhibitor is improved.
For example, control unit can each Flowing characteristic parameters to component, intake pipeline parameter is analyzed is sprayed
The parameters such as rate, spray angle, and prediction is carried out to avoid component in the injection rail of synchronization to the injection track of component
Mark has intersection.Alternatively, control unit is predicted according to the injection track of component and the position of dispersion hole and distribution array
To which evaluation group dispenses the injection probability into separating tube.Control unit selection injection probability is greater than the injection speed of injection probability threshold value
Rate and spray angle generate control information to control the injection of component.
It should be noted that above-mentioned specific embodiment is exemplary, those skilled in the art can disclose in the present invention
Various solutions are found out under the inspiration of content, and these solutions also belong to disclosure of the invention range and fall into this hair
Within bright protection scope.It will be understood by those skilled in the art that description of the invention and its attached drawing are illustrative and are not
Constitute limitations on claims.Protection scope of the present invention is defined by the claims and their equivalents.
Claims (10)
1. a kind of scale inhibitor method for oil/gas well, which is characterized in that the scale inhibitor method is by anti-incrustation corrosion inhibitor
At least one component is filled by including at least the anti-incrustation corrosion inhibitor of input unit (10), injecting unit (20) and control unit (70)
It sets (100) and the oil/gas well is injected in the asynchronous mode of timesharing, wherein
The input unit (10) by least one component of anti-incrustation corrosion inhibitor by connect with the injecting unit (20) to
A few injection pipeline injects the injecting unit (20) in a manner of pressurizeing,
Described control unit (70) is according to the quality proportionings of at least one component materials of the anti-incrustation corrosion inhibitor, the component
Concentration and/or viscosity determine the control information of the injection rate ratio of at least one component and generation and time correlation,
The injecting unit (20) coupled with well head (30) includes main aperture road (40), the taper separating tube for dispersed polymeres
(60) and at least one is for controlling each component injection rate in the anti-incrustation corrosion inhibitor, spray angle and/or injection direction
The input hole of resistance valve,
Control information of the resistance valve based on described control unit will not be inverted in the anti-incrustation corrosion inhibitor at different angles
Each component inject the oil/gas well by multiple dispersion holes for being distributed on the separating tube (60) according to specified rate synchronous.
2. scale inhibitor method as described in claim 1, which is characterized in that described control unit (70) is based at least two institutes
The difference in length for stating the Flowing characteristic parameters difference between component and corresponding injection pipeline assesses the component in injection pipe
The flowing duration difference of line, and based on the injection length interval of the flowing duration difference and component adjustment at least two
Input time interval between the kind component.
3. scale inhibitor method as claimed in claim 2, which is characterized in that described control unit (70) is based on the component
The distribution density of viscosity parameter and the dispersion hole array on the matched separating tube determines the injection for conveying the component
The injection rate and spray angle of pipeline and the resistance valve, so that the component is according to preset injection rate and jet angle
Degree is ejected through specified dispersion hole array and injects the oil/gas well.
4. the scale inhibitor method as described in one of preceding claims, which is characterized in that described control unit (70) is based on institute
State component described in the viscosity estimation of the included angle of input hole and hole wall, preset injection rate, spray angle and component
Track is sprayed, and adjusts the spray angle and injection speed of at least one component based on the injection track and injecting time
Rate, so that its spray in the case where the injecting time has intersection of the injection track of default at least two components separated
Penetrating track does not have intersection.
5. scale inhibitor method as claimed in claim 4, which is characterized in that at least one of described injecting unit (20) institute
The different level position that input hole is set to the hole wall of the main aperture road (40) in a non-symmetrical way is stated,
Difference and difference in height of the injecting unit (20) based on the input hole and hole wall angle make the anti-incrustation corrosion inhibitor
Each component spray and inject from the input hole by time-sharing format, and difference in height and jet angle based on the input hole
Spend the input time interval between difference at least two components of pre-adjusting.
6. scale inhibitor method as claimed in claim 5, which is characterized in that the input unit (10) and the injecting unit
(20) each component of water the injection pipeline and its radial dimension and the anti-incrustation corrosion inhibitor for water filling is at least connected between
The matched first injection pipeline of Flowing characteristic parameters, the second injection pipeline and third inject pipeline,
The horizontal position that the water injects the corresponding input hole of pipeline is higher than the first injection pipeline, the second injection pipeline
With the horizontal position of the input hole of third injection pipeline, the first input of the first injection pipeline for inputting the first component
The horizontal position in hole is lower than the horizontal position of the second input hole of the second injection pipeline for inputting the second component, for inputting
The third input hole of the third injection pipeline of third component is lower than the horizontal position of second input hole so that water, described first
Component, the second component and third component are implanted sequentially in the oil/gas well.
7. scale inhibitor method as claimed in claim 6, which is characterized in that the first injection pipeline, the second injection pipeline
The direction change being sequentially reduced with the angle of third injection pipeline and hole wall according to injection rate is so that by the injection
The component of the corresponding injection of pipeline is implanted sequentially in the oil/gas well.
8. scale inhibitor method as claimed in claim 7, which is characterized in that the component materials of the anti-incrustation corrosion inhibitor are at least wrapped
Include benzyl sulfosuccinate, Gemini schiff's base type quaternary ammonium salt, sodium citrate, four poly-epoxy succinic acids and aspartic acid polymerization
Object, wherein
The mass percent of the benzyl sulfosuccinate are as follows: 20~30%；
The mass percent of the Gemini schiff's base type quaternary ammonium salt are as follows: 15~25%；
The mass percent of the sodium citrate are as follows: 15~20%；
The mass percent of four poly-epoxy succinic acid are as follows: 15~25%；
The mass percent of the aspartic acid polymers are as follows: 0.5~15%.
9. scale inhibitor method as claimed in claim 8, which is characterized in that the benzyl sulfosuccinate is by such as lower section
Method preparation:
Maleic acid disodium salt and benzyl mercaptan are added in ethyl alcohol and are heated to reflux 6~12 hours according to 1:1 molar ratio and obtains benzyl
The benzyl sulfosuccinate solution is placed on freeze-drying in freeze dryer and is made by base sulfosuccinate solution；
The Gemini schiff's base type quaternary ammonium salt is prepared via a method which:
By salicylide and N, N- dimethyl propylamine is added in methanol according to the ratio of 1:1.2 and is heated to reflux 1~4 hour, will
Solution after being heated to reflux is filtered and dries, and obtains schiff bases,
By the schiff bases and 1,2- dichloropropane is added in acetone soln according to the quality proportioning of 2:1 to be melted, and to described
At least one drop dimethylformamide is added dropwise in acetone soln, is depressurized after the acetone soln is heated to reflux 6~12 hours
Distillation obtains Gemini schiff's base type quaternary ammonium salt to remove acetone and dimethylformamide.
10. scale inhibitor method as claimed in claim 8, which is characterized in that the aspartic acid polymers include it is a kind of or
The copolymer of a variety of aspartic acid based polyalcohols, the terpolymer of aspartic acid based polyalcohol, aspartic acid based polyalcohol spread out
The soluble-salt of biology, the aspartic acid based polyalcohol with sealing end and aspartic acid based polyalcohol；
The aspartic acid polymers further include having the aspartic acid of the offer aspartic acid polymers of prescribed concentration poly-
Thing liquid body is closed, the concentration range of the aspartic acid polymers liquid is 1.0 × 10-6Ppm to 1.0 × 104ppm。
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