CN106047326B - CO suitable for high-salinity and high-barium-strontium environment2Corrosion and scale inhibitor - Google Patents
CO suitable for high-salinity and high-barium-strontium environment2Corrosion and scale inhibitor Download PDFInfo
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- CN106047326B CN106047326B CN201610385573.XA CN201610385573A CN106047326B CN 106047326 B CN106047326 B CN 106047326B CN 201610385573 A CN201610385573 A CN 201610385573A CN 106047326 B CN106047326 B CN 106047326B
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- isopropanol
- ammonium salt
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- 239000002455 scale inhibitor Substances 0.000 title abstract 3
- 229910052712 strontium Inorganic materials 0.000 title abstract 3
- 238000005260 corrosion Methods 0.000 claims abstract description 41
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims abstract description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 39
- 230000007797 corrosion Effects 0.000 claims abstract description 36
- 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 claims abstract description 20
- 229940051841 polyoxyethylene ether Drugs 0.000 claims abstract description 20
- 229920000056 polyoxyethylene ether Polymers 0.000 claims abstract description 20
- 239000011734 sodium Substances 0.000 claims abstract description 20
- 229910052708 sodium Inorganic materials 0.000 claims abstract description 20
- -1 oxygen methylamine quaternary ammonium salt Chemical class 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 13
- PWYYWQHXAPXYMF-UHFFFAOYSA-N strontium(2+) Chemical compound [Sr+2] PWYYWQHXAPXYMF-UHFFFAOYSA-N 0.000 claims abstract description 7
- 150000002500 ions Chemical group 0.000 claims abstract description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 25
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 22
- 230000002401 inhibitory effect Effects 0.000 claims description 21
- BAVYZALUXZFZLV-UHFFFAOYSA-N mono-methylamine Natural products NC BAVYZALUXZFZLV-UHFFFAOYSA-N 0.000 claims description 21
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 19
- 229910052760 oxygen Inorganic materials 0.000 claims description 19
- 239000001301 oxygen Substances 0.000 claims description 19
- BJLRVFDWAOVFCI-UHFFFAOYSA-N 1h-imidazole;quinoline Chemical class C1=CNC=N1.N1=CC=CC2=CC=CC=C21 BJLRVFDWAOVFCI-UHFFFAOYSA-N 0.000 claims description 18
- 241001597008 Nomeidae Species 0.000 claims description 18
- 238000006243 chemical reaction Methods 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 18
- RGSFGYAAUTVSQA-UHFFFAOYSA-N pentamethylene Natural products C1CCCC1 RGSFGYAAUTVSQA-UHFFFAOYSA-N 0.000 claims description 17
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 claims description 16
- 239000000203 mixture Substances 0.000 claims description 16
- WOIHABYNKOEWFG-UHFFFAOYSA-N [Sr].[Ba] Chemical compound [Sr].[Ba] WOIHABYNKOEWFG-UHFFFAOYSA-N 0.000 claims description 13
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 claims description 10
- 239000005711 Benzoic acid Substances 0.000 claims description 8
- 235000010233 benzoic acid Nutrition 0.000 claims description 8
- 239000000498 cooling water Substances 0.000 claims description 5
- 230000018044 dehydration Effects 0.000 claims description 5
- 238000006297 dehydration reaction Methods 0.000 claims description 5
- CZHYKKAKFWLGJO-UHFFFAOYSA-N dimethyl phosphite Chemical compound COP([O-])OC CZHYKKAKFWLGJO-UHFFFAOYSA-N 0.000 claims description 5
- 238000013019 agitation Methods 0.000 claims description 3
- DLQDGVZAEYZNTG-UHFFFAOYSA-N dimethyl hydrogen phosphite Chemical class COP(O)OC DLQDGVZAEYZNTG-UHFFFAOYSA-N 0.000 claims description 3
- MTNDZQHUAFNZQY-UHFFFAOYSA-N imidazoline Chemical compound C1CN=CN1 MTNDZQHUAFNZQY-UHFFFAOYSA-N 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- 239000013067 intermediate product Substances 0.000 claims description 3
- 238000003786 synthesis reaction Methods 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims 1
- 230000005764 inhibitory process Effects 0.000 abstract description 15
- 238000002474 experimental method Methods 0.000 abstract description 6
- 238000006073 displacement reaction Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 238000011084 recovery Methods 0.000 abstract description 3
- 230000009977 dual effect Effects 0.000 abstract description 2
- 125000003504 2-oxazolinyl group Chemical class O1C(=NCC1)* 0.000 abstract 1
- SNRUBQQJIBEYMU-UHFFFAOYSA-N Dodecane Natural products CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 abstract 1
- 239000013522 chelant Substances 0.000 abstract 1
- 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 abstract 1
- DUYCTCQXNHFCSJ-UHFFFAOYSA-N dtpmp Chemical compound OP(=O)(O)CN(CP(O)(O)=O)CCN(CP(O)(=O)O)CCN(CP(O)(O)=O)CP(O)(O)=O DUYCTCQXNHFCSJ-UHFFFAOYSA-N 0.000 abstract 1
- 238000001179 sorption measurement Methods 0.000 abstract 1
- 238000009736 wetting Methods 0.000 abstract 1
- 238000003756 stirring Methods 0.000 description 9
- 150000002918 oxazolines Chemical class 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000003112 inhibitor Substances 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- XYFCBTPGUUZFHI-UHFFFAOYSA-N Phosphine Chemical compound P XYFCBTPGUUZFHI-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 150000003863 ammonium salts Chemical class 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 125000001434 methanylylidene group Chemical group [H]C#[*] 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 229910000073 phosphorus hydride Inorganic materials 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000007832 Na2SO4 Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 230000005465 channeling Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 150000002462 imidazolines Chemical class 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000004457 water analysis Methods 0.000 description 1
Classifications
-
- 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
- C09K8/52—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
-
- 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
-
- 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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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The invention relates to CO suitable for a high-salinity and high-barium-strontium environment2The corrosion and scale inhibitor consists of a modified oxazoline derivative, a diyne oxygen methylamine quaternary ammonium salt, diethylenetriamine penta (methylene phosphonic acid) sodium, isomeric dodecyl polyoxyethylene ether, isopropanol and water, and an adsorption film formed by the corrosion and scale inhibitor effectively isolates a corrosion medium and plays a good role in protecting a pipe column; simultaneously effective scale inhibition component and Ba2+/Sr2+The ions form chelate with higher stability, so that the generation of scale is prevented; the non-ionic components in the formula change the oleophylic wetting of the coreMoisture and improve CO2Displacement effect of the flooding on the remaining oil. The invention has the advantages of simple and convenient dosing process, small dosage, strong practicability and the like, and experiments prove that the invention aims at CO in the high-salinity and high-barium-strontium environment of western oil fields2The shaft is driven to achieve good anti-corrosion and anti-scaling effects, and CO is implemented in the dual environment of solving corrosion and scaling2The hidden trouble of corrosion and scaling of a shaft in the flooding process is CO2The oil displacement and the improvement of the recovery ratio provide technical support.
Description
Technical field
The invention belongs to technical field of oilfield chemistry, and in particular to a kind of suitable for high salinity, the CO of high barium strontium environment2
Drive corrosion inhibiting and descaling agent.
Background technique
For some hypotonic, Oil in Super-low Permeability oil reservoir developments, CO2Technology of reservoir sweep is that water-drive pool further increases having for recovery ratio
Efficacious prescriptions method.CO2Technology of reservoir sweep is widely used in countries and regions such as the U.S., Canada, Japan, Angola, Turkey, Sino-U.S.
State is to implement CO earliest in the world2The country of-EOR and CO2Displacement of reservoir oil country with fastest developing speed, U.S. CO in 20122Mixed phase drives
Project 112, year injects CO238400000000 sides, obtain good result by 1608.9 ten thousand tons of yearly rate-oil production.
Domestic CO2Technology of reservoir sweep is started late, small scale, is started to walk from 1997, and just having carried out by 2007 has one
The field test of set pattern mould is concentrated mainly on grand celebration, Jilin, triumph, spits the oil fields such as Kazakhstan.But in CO2It drives in experimentation and deposits
It is being easy to happen has channeling in oil reservoir, there are the weakness such as corrosiveness to tubing string.
For some western hyposmosis, extra permeability oilfields of being located in development CO2It drives in research process, due to water flooding
For CaCl2Water type, salinity height (20-100g/L), incrustation ion Ba2+、Sr2+Content height (> 1000mg/L), injection water are
Na2SO4Water type, water quality are incompatible, CO2Drive will lead to down-hole string and wellhead installation corrosion and scaling and more protrude, and in fouling, invade
Under corrosion surrounding medium Coexistence Situation, the lower local corrosion of the aggravation of tubing extent of corrosion, especially dirt, while tubing string junction seals
Property is tested.Therefore, a kind of CO that can control high mine degree, high barium strontium environment is invented2The method for driving pit shaft corrosion and scaling is right
It is very important in oilfield safety, steady production.
Summary of the invention
The object of the present invention is to provide a kind of suitable for high mine degree, the CO of high barium strontium environment2Drive pit shaft corrosion inhibiting and descaling agent, solution
Certainly implement CO under the dual environment of corrosion and scaling2Existing pit shaft corrosion and scaling potential problem during driving.
For this purpose, the present invention provides a kind of suitable for high salinity, the CO of high barium strontium environment2Corrosion inhibiting and descaling agent is driven, by weight
Percentage is measured by following material composition:
Modified oxazoline derivative: 10~22%；
Diine oxygen methyl amine quaternary ammonium salt: 10~20%；
Diethylene triamine pentamethylene phosphonic sodium: 5~10%；
Heterogeneous ten alcohol polyoxyethylene ether: 1~5%；
Isopropanol: 4~10%；
Remaining is water.
The CO2Corrosion inhibiting and descaling agent is driven, by weight percentage by following material composition:
Modified oxazoline derivative: 13~19%；
Diine oxygen methyl amine quaternary ammonium salt: 12~17%；
Diethylene triamine pentamethylene phosphonic sodium: 7~8%；
Heterogeneous ten alcohol polyoxyethylene ether: 2~4%；
Isopropanol: 6~8%；
Remaining is water.
The CO2Corrosion inhibiting and descaling agent is driven, by weight percentage by following material composition:
Modified imidazole quinoline derivant: 16%；
Diine oxygen methyl amine quaternary ammonium salt: 15%；
Diethylene triamine pentamethylene phosphonic sodium: 7.5%；
Heterogeneous ten alcohol polyoxyethylene ether: 3%；
Isopropanol: 7%；
Water: 51.5%.
The modified imidazole quinoline derivant is passed through anti-by benzoic acid, diethylenetriamine, dimethylbenzene and dimethylphosphite
It should be made.
The benzoic acid, diethylenetriamine, dimethylbenzene and dimethylphosphite reaction mass ratio be 100:87:
50:62。
The modified imidazole quinoline derivant is synthesized by following methods:
100 parts of benzoic acid, 87 parts of diethylenetriamines and 50 parts of dimethylbenzene are mixed to join in synthesis reaction vessel, it is closed,
Logical cooling water；
Under agitation, 160~170 DEG C, 2~2.5h of insulation reaction are to slowly warm up to, when there is water generation in reaction kettle,
And system temperature is risen to 220 DEG C or so, keeps the temperature dehydration 7~8 hours when no longer increasing by output water, is all steamed to water
Out, imidazoline intermediate product is generated in kettle；
Reactor temperature is down to 50~60 DEG C by logical cooling water, then 62 parts of dimethylphosphites are slowly added to reaction kettle
In, it heats up 100 DEG C or so, isothermal reaction 4~5 hours, obtains modified imidazole quinoline derivant.
During the heat preservation dehydration, use dimethylbenzene as azeotropic agent.
It is a kind of suitable for high salinity, the CO of high barium strontium environment2The preparation method of the corrosion inhibiting and descaling agent of drive, including it is following
Step:
By 100 parts of materials of material composition of following weight percent:
Modified oxazoline derivative: 10~22%；Diine oxygen methyl amine quaternary ammonium salt: 10~20%；Five methene phosphine of diethylenetriamine
Sour sodium: 5~10%；Heterogeneous ten alcohol polyoxyethylene ether: 1~5%；Isopropanol: 4~10%；Remaining is water；
First heterogeneous ten alcohol polyoxyethylene ether is stirred to being completely dissolved, secondly, being first added under constant stirring with isopropanol
It needs to be added the 10% of water to continue to stir 30min, then sequentially adds modified imidazole quinoline derivant, diine oxygen methyl amine season in proportion
Ammonium salt, diethylene triamine pentamethylene phosphonic sodium, stirring while adding, the water for being eventually adding remainder is stirred for 30min to get production
Product.
Beneficial effects of the present invention: provided by the invention this suitable for high salinity, the CO of high barium strontium environment2Drive inhibition
The adsorbed film that antisludging agent is formed has been effectively isolated corrosive medium, plays a very good protection to tubing string；It is effective simultaneously
Scale inhibition ingredient and Ba2+/Sr2+Ion forms the chelating object of high stability, prevents the generation of fouling；It is non-contained in formula
Ion component changes the oleophylic wetability of rock core, improves CO2 drive to the Flooding Efficiency of remaining oil.The present invention has dosing work
The advantages that skill is easy, dosage is small, practical, experiments verify that for the CO under western oil field high salinity, high barium strontium environment2
It drives pit shaft and plays good anti-corrosion anti-scale effect, be CO2It drives raising recovery ratio and provides technical guarantee.
Specific embodiment
Embodiment 1:
This is still a kind of suitable for high salinity, the CO of high barium strontium environment from providing2Drive corrosion inhibiting and descaling agent, by weight percentage
Than by following material composition:
Modified oxazoline derivative: 10~22%；
Diine oxygen methyl amine quaternary ammonium salt: 10~20%；
Diethylene triamine pentamethylene phosphonic sodium: 5~10%；
Heterogeneous ten alcohol polyoxyethylene ether: 1~5%；
Isopropanol: 4~10%；
Remaining is water.
Further, by weight percentage by following material composition:
Modified oxazoline derivative: 13~19%；
Diine oxygen methyl amine quaternary ammonium salt: 12~17%；
Diethylene triamine pentamethylene phosphonic sodium: 7~8%；
Heterogeneous ten alcohol polyoxyethylene ether: 2~4%；
Isopropanol: 6~8%；
Remaining is water.
Optimal proportion, by weight percentage by following material composition:
Modified imidazole quinoline derivant: 16%；
Diine oxygen methyl amine quaternary ammonium salt: 15%；
Diethylene triamine pentamethylene phosphonic sodium: 7.5%；
Heterogeneous ten alcohol polyoxyethylene ether: 3%；
Isopropanol: 7%；
Water: 51.5%.
Wherein, modified imidazole quinoline derivant passes through reaction by benzoic acid, diethylenetriamine, dimethylbenzene and dimethylphosphite
It being made, reaction mass ratio is 100:87:50:62, it is synthesized by following methods:
100 parts of benzoic acid, 87 parts of diethylenetriamines and 50 parts of dimethylbenzene are mixed to join in synthesis reaction vessel, it is closed,
Logical cooling water；
Under agitation, 160~170 DEG C, 2~2.5h of insulation reaction are to slowly warm up to, when there is water generation in reaction kettle,
And system temperature is risen to 220 DEG C or so, keeps the temperature dehydration 7~8 hours, made with dimethylbenzene when no longer increasing by output water
It for azeotropic agent, is all steamed to water, imidazoline intermediate product is generated in kettle；
Reactor temperature is down to 50~60 DEG C by logical cooling water, then 62 parts of dimethylphosphites are slowly added to reaction kettle
In, it heats up 100 DEG C or so, isothermal reaction 4~5 hours, obtains modified imidazole quinoline derivant.
Embodiment 2:
The present embodiment provides a kind of suitable for high salinity, the CO of high barium strontium environment2The preparation of the corrosion inhibiting and descaling agent of drive
Method, comprising the following steps:
By 100 parts of materials of material composition of following weight percent:
Modified oxazoline derivative: 10~22%；Diine oxygen methyl amine quaternary ammonium salt: 10~20%；Five methene phosphine of diethylenetriamine
Sour sodium: 5~10%；Heterogeneous ten alcohol polyoxyethylene ether: 1~5%；Isopropanol: 4~10%；Remaining is water；
First heterogeneous ten alcohol polyoxyethylene ether is stirred to being completely dissolved, secondly, being first added under constant stirring with isopropanol
It needs to be added the 10% of water to continue to stir 30min, then sequentially adds modified imidazole quinoline derivant, diine oxygen methyl amine season in proportion
Ammonium salt, diethylene triamine pentamethylene phosphonic sodium, stirring while adding, the water for being eventually adding remainder is stirred for 30min to get production
Product.
It is illustrated below in conjunction with specific real time data, following example 3-5 is that corrosion inhibiting and descaling agent is commented in interior
Valence, test medium used, which is derived from, implements CO2Drive the producing well (see Table 1) in well site.
Table 1:Y52-89 water flooding water analysis unit: mg/l
| pH | Cl- | HCO3 - | SO4 2- | Na+/K+ | Mg2+ | Ca2+ | Sr2+/Ba2+ | Total salinity |
| 6.7 | 15610.05 | 114.67 | 113.59 | 9480.0 | 12.35 | 305.41 | 1109.32 | 26745.38 |
Following example 6-7 is scene to implementation CO2Effect after driving 2 mouthfuls of well site producing well filling corrosion inhibiting and descaling agent is commented
Valence.
Embodiment 3:
It is of the present invention a kind of suitable for high salinity, the CO2 drive corrosion inhibiting and descaling agent by weight hundred of high barium strontium environment
Divide than by following material composition:
Modified imidazole quinoline derivant: 16%；
Diine oxygen methyl amine quaternary ammonium salt: 15%；
Diethylene triamine pentamethylene phosphonic sodium: 7.5%；
Heterogeneous ten alcohol polyoxyethylene ether: 3%；
Isopropanol: 7%；
Water: 51.5%.
It according to the proportion, is that modified imidazoline is spread out with isopropanol first in 10L reaction kettle in a capacity under normal temperature and pressure
Biology, heterogeneous ten alcohol polyoxyethylene ether are stirred to being completely dissolved, and need to be added the 10% of water secondly, being first added under constant stirring
Continue to stir 30min, then sequentially adds diine oxygen methyl amine quaternary ammonium salt, diethylene triamine pentamethylene phosphonic sodium, Bian Jia in proportion
Side stirring, the water for being eventually adding remainder are stirred for 30min to get product.
Implementation result: indoor high temperature and pressure dynamic experiment shows: temperature is 100 DEG C, CO2Partial pressure is 2MPa, experimental period
14d, density of corrosion inhibitor 120ppm, N80 steel inhibition efficiency are 88.2%, scale inhibition performance 94.3%.
Embodiment 4:
A kind of CO suitable for high salinity media of the present invention2Drive is with corrosion inhibiting and descaling agent by weight percentage under
Column material composition:
Modified oxazoline derivative: 10%；
Diine oxygen methyl amine quaternary ammonium salt: 20%；
Diethylene triamine pentamethylene phosphonic sodium: 10%；
Heterogeneous ten alcohol polyoxyethylene ether: 3%；
Isopropanol: 5%；
Water: 52%.
Its product configuration method is the same as embodiment 3.
Implementation result: high temperature and pressure dynamic experiment shows: temperature is 100 DEG C, CO2Partial pressure be 2MPa, experimental period 14d,
Density of corrosion inhibitor is 120ppm, and N80 steel inhibition efficiency is 86.4%, scale inhibition performance 95.3%.
Embodiment 5:
A kind of CO suitable for high salinity media of the present invention2Drive is with corrosion inhibiting and descaling agent by weight percentage under
Column material composition:
Modified oxazoline derivative: 22%；
Diine oxygen methyl amine quaternary ammonium salt: 14%；
Diethylene triamine pentamethylene phosphonic sodium: 8%；
Heterogeneous ten alcohol polyoxyethylene ether: 4%；
Isopropanol: 7%；
Water: 45%.
Its product configuration method is the same as embodiment 3.
Implementation result: high temperature and pressure dynamic experiment shows: temperature is 100 DEG C, CO2Partial pressure be 2MPa, experimental period 14d,
Density of corrosion inhibitor is 120ppm, and N80 steel inhibition efficiency is 87.6%, scale inhibition performance 94.7%.
Embodiment 6:
A kind of CO suitable for high salinity media of the present invention2Drive is with corrosion inhibiting and descaling agent by weight percentage under
Column material composition:
Modified imidazole quinoline derivant: 16%；
Diine oxygen methyl amine quaternary ammonium salt: 15%；
Diethylene triamine pentamethylene phosphonic sodium: 7.5%；
Heterogeneous ten alcohol polyoxyethylene ether: 3%；
Isopropanol: 7%；
Water: 51.5%.
Implementation result: the 1st mouthful of CO2It drives and implements well (Y52-89), Ba2+/Sr2+Content is 1109.32mg/L, and total salinity is
105.4 mg/L, CO2Partial pressure is under 0.8MPa environment, and filling density of corrosion inhibitor is 200ppm, and N80 steel inhibition efficiency is 94.6%,
Scale inhibition performance 95.8%.
Embodiment 7:
A kind of CO suitable for high salinity media of the present invention2Drive is with corrosion inhibiting and descaling agent by weight percentage under
Column material composition:
Modified imidazole quinoline derivant: 16%；
Diine oxygen methyl amine quaternary ammonium salt: 15%；
Diethylene triamine pentamethylene phosphonic sodium: 7.5%；
Heterogeneous ten alcohol polyoxyethylene ether: 3%；
Isopropanol: 7%；
Water: 51.5%.
Implementation result: the 2nd mouthful of CO2It drives and implements well (Y32-16), Ba2+/Sr2+Content is 2013.46mg/L, and total salinity is
87.6 g/L, CO2Partial pressure is under 1MPa environment, and filling density of corrosion inhibitor is 200ppm, and N80 steel inhibition efficiency is 88.7%, scale inhibition
Rate 94.6%.
In conclusion this corrosion inhibiting and descaling agent scene of the invention fills simple process, injected from oil jacket annulus, oil pipe is adopted
Out, field experiment shows: the medicament is suitable for western high salinity (50-100g/L), high incrustation ion Ba2+、Sr2+Content (>
1000mg/L) oil field, when drug concentration is in 100~300ppm range, temperature is 60~120 DEG C, CO2Divide 0.3~8MPa item
Under part, CO2Drive pit shaft corrosion inhibition rate > 84%, scale inhibition performance > 90%.
The foregoing examples are only illustrative of the present invention, does not constitute the limitation to protection scope of the present invention, all
It is within being all belonged to the scope of protection of the present invention with the same or similar design of the present invention.
Claims (4)
1. a kind of CO2 suitable for high salinity, high barium strontium environment drives corrosion inhibiting and descaling agent, it is characterised in that: by weight percentage
By following material composition:
Modified imidazole quinoline derivant: 10~22%；
Diine oxygen methyl amine quaternary ammonium salt: 10~20%；
Diethylene triamine pentamethylene phosphonic sodium: 5~10%；
Heterogeneous ten alcohol polyoxyethylene ether: 1~5%；
Isopropanol: 4~10%；
Remaining is water；
The modified imidazole quinoline derivant passes through reaction system by benzoic acid, diethylenetriamine, dimethylbenzene and dimethylphosphite
?；
The benzoic acid, diethylenetriamine, dimethylbenzene and dimethylphosphite reaction mass ratio be 100:87:50:62；
The modified imidazole quinoline derivant is synthesized by following methods:
100 parts of benzoic acid, 87 parts of diethylenetriamines and 50 parts of dimethylbenzene are mixed to join in synthesis reaction vessel, it is closed, lead to cold
But water；Under agitation, 160~170 DEG C, 2~2 .5h of insulation reaction are to slowly warm up to, when there is water generation in reaction kettle, and
When output water no longer increases, system temperature is risen to 220 DEG C, dehydration 7~8 hours is kept the temperature, is all steamed to water, in kettle
Generate imidazoline intermediate product；
Reactor temperature is down to 50~60 DEG C by logical cooling water, then 62 parts of dimethylphosphites are slowly added in reaction kettle,
100 DEG C of heating, isothermal reaction 4~5 hours, obtains modified imidazole quinoline derivant；
Wherein, high barium strontium is incrustation ion Ba2+, Sr2+ content-> 1000mg/L.
2. CO2 as described in claim 1 drives corrosion inhibiting and descaling agent, it is characterised in that: by weight percentage by following material composition:
Modified imidazole quinoline derivant: 13~19%；
Diine oxygen methyl amine quaternary ammonium salt: 12~17%；
Diethylene triamine pentamethylene phosphonic sodium: 7~8%；
Heterogeneous ten alcohol polyoxyethylene ether: 2~4%；
Isopropanol: 6~8%；
Remaining is water.
3. CO2 as described in claim 1 drives corrosion inhibiting and descaling agent, it is characterised in that: by weight percentage by following material composition:
Modified imidazole quinoline derivant: 16%；
Diine oxygen methyl amine quaternary ammonium salt: 15%；
Diethylene triamine pentamethylene phosphonic sodium: 7.5%；
Heterogeneous ten alcohol polyoxyethylene ether: 3%；
Isopropanol: 7%；
Water: 51 .5%.
4. CO as described in claim 12Drive corrosion inhibiting and descaling agent, it is characterised in that: during the heat preservation dehydration, make
Use dimethylbenzene as azeotropic agent.
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