CN116285925A - High-temperature corrosion inhibitor for high-concentration hydrochloric acid acidizing fluid and preparation method thereof - Google Patents
High-temperature corrosion inhibitor for high-concentration hydrochloric acid acidizing fluid and preparation method thereof Download PDFInfo
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- CN116285925A CN116285925A CN202310163204.6A CN202310163204A CN116285925A CN 116285925 A CN116285925 A CN 116285925A CN 202310163204 A CN202310163204 A CN 202310163204A CN 116285925 A CN116285925 A CN 116285925A
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- hydrochloric acid
- corrosion inhibitor
- acidizing fluid
- temperature corrosion
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- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 title claims abstract description 92
- 230000007797 corrosion Effects 0.000 title claims abstract description 63
- 238000005260 corrosion Methods 0.000 title claims abstract description 63
- 239000003112 inhibitor Substances 0.000 title claims abstract description 54
- 239000012530 fluid Substances 0.000 title claims abstract description 37
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 29
- -1 chloromethyl naphthalene quinoline quaternary ammonium salt Chemical class 0.000 claims abstract description 24
- SMWDFEZZVXVKRB-UHFFFAOYSA-N anhydrous quinoline Natural products N1=CC=CC2=CC=CC=C21 SMWDFEZZVXVKRB-UHFFFAOYSA-N 0.000 claims abstract description 21
- 238000006243 chemical reaction Methods 0.000 claims abstract description 20
- 239000011833 salt mixture Substances 0.000 claims abstract description 19
- 238000003756 stirring Methods 0.000 claims abstract description 17
- 238000010438 heat treatment Methods 0.000 claims abstract description 11
- XMWGTKZEDLCVIG-UHFFFAOYSA-N 1-(chloromethyl)naphthalene Chemical compound C1=CC=C2C(CCl)=CC=CC2=C1 XMWGTKZEDLCVIG-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000002904 solvent Substances 0.000 claims abstract description 10
- 238000001816 cooling Methods 0.000 claims abstract description 7
- 239000004094 surface-active agent Substances 0.000 claims abstract description 7
- 230000035484 reaction time Effects 0.000 claims abstract description 5
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 17
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 229920000191 poly(N-vinyl pyrrolidone) Polymers 0.000 claims description 9
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims description 6
- 235000019253 formic acid Nutrition 0.000 claims description 6
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 5
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 5
- MTJGVAJYTOXFJH-UHFFFAOYSA-N 3-aminonaphthalene-1,5-disulfonic acid Chemical compound C1=CC=C(S(O)(=O)=O)C2=CC(N)=CC(S(O)(=O)=O)=C21 MTJGVAJYTOXFJH-UHFFFAOYSA-N 0.000 claims description 2
- 239000012752 auxiliary agent Substances 0.000 claims description 2
- 239000002131 composite material Substances 0.000 claims description 2
- 125000000373 fatty alcohol group Chemical group 0.000 claims description 2
- 150000002191 fatty alcohols Chemical class 0.000 claims description 2
- 239000002994 raw material Substances 0.000 claims description 2
- 230000005764 inhibitory process Effects 0.000 abstract description 6
- 238000011161 development Methods 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 239000003208 petroleum Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 abstract description 2
- 230000020477 pH reduction Effects 0.000 abstract description 2
- 231100000614 poison Toxicity 0.000 abstract description 2
- 239000003440 toxic substance Substances 0.000 abstract description 2
- 238000009776 industrial production Methods 0.000 abstract 1
- 238000001179 sorption measurement Methods 0.000 abstract 1
- 239000002253 acid Substances 0.000 description 5
- 238000004382 potting Methods 0.000 description 4
- 239000000376 reactant Substances 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/54—Compositions for in situ inhibition of corrosion in boreholes or wells
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D215/00—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems
- C07D215/02—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen atoms or carbon atoms directly attached to the ring nitrogen atom
- C07D215/04—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen atoms or carbon atoms directly attached to the ring nitrogen atom with only hydrogen atoms or radicals containing only hydrogen and carbon atoms, directly attached to the ring carbon atoms
- C07D215/10—Quaternary compounds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/62—Compositions for forming crevices or fractures
- C09K8/72—Eroding chemicals, e.g. acids
- C09K8/74—Eroding chemicals, e.g. acids combined with additives added for specific purposes
-
- 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)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention relates to the technical field of acidification corrosion inhibition for petroleum development, in particular to a high-temperature corrosion inhibitor for high-concentration hydrochloric acid acidizing fluid and a preparation method thereof. Comprises 20-30 parts of chloromethyl naphthalene quinoline quaternary ammonium salt mixture, 55-73 parts of solvent and 7-15 parts of surfactant; the quinoline quaternary ammonium salt mixture is prepared by sequentially adding glycol, quinoline and 1-chloromethyl naphthalene into a reaction vessel, starting stirring, heating to a reaction temperature, maintaining a certain reaction time, and then cooling to room temperature. The beneficial effects are as follows: the chloromethyl naphthalene quinoline quaternary ammonium salt in the high-temperature corrosion inhibitor has strong adsorption capacity, can have good corrosion inhibition effect at 150 ℃ in 28% hydrochloric acid liquid, has fewer components, is simple to prepare, does not contain extremely toxic substances, does not contain low-flash-point solvents, has small addition amount and low cost, and is beneficial to large-scale industrial production.
Description
Technical Field
The invention relates to the technical field of acidification corrosion inhibition for petroleum development, in particular to a high-temperature corrosion inhibitor for high-concentration hydrochloric acid acidizing fluid and a preparation method thereof.
Background
In the petroleum exploration and development process, acidizing operation is one of important means for improving the single well productivity of an oil and gas well. With the increasing depth of exploration and development, the bottom hole temperature is increased along with the increase, and especially under the condition of high acid liquor concentration (hydrochloric acid concentration 28%), the acid liquor can inevitably cause serious corrosion of a down-hole tubular column, and in order to reduce the acid liquor corrosion, a corrosion inhibitor is added into the acid liquor in the most common measure.
Along with the development of the oil and gas well in the middle and later stages, the well depth is continuously increased, and higher performance requirements are provided for corrosion inhibitors used in the acidizing operation of the oil and gas well. Much work has been done at home and abroad in developing and researching acidified inhibitors, but very few reports have been made on high performance inhibitors suitable for high temperature concentrated acids (hydrochloric acid concentration up to 28%). The conventional corrosion inhibitor product has the defects of low corrosion inhibition efficiency, poor compatibility, easiness in layering or precipitation, large addition amount, high price, extremely toxic alkynol substances and the like in the practical application process. Therefore, the research on the corrosion inhibitor for the high-temperature and high-concentration hydrochloric acid acidizing fluid has important significance for improving the acidizing effect, reducing the corrosion of equipment and pipelines and increasing the comprehensive economic benefit.
Disclosure of Invention
The invention aims at overcoming the defects in the prior art and provides a high-temperature corrosion inhibitor for high-concentration hydrochloric acid acidizing fluid and a preparation method thereof.
The invention relates to a high-temperature corrosion inhibitor for high-concentration hydrochloric acid acidizing fluid, which has the technical scheme that: the composite material is prepared from the following raw materials in parts by weight: 20-30 parts of chloromethyl naphthalene quinoline quaternary ammonium salt mixture, 55-73 parts of solvent and 7-15 parts of surfactant.
The preparation method of the high-temperature corrosion inhibitor for the high-concentration hydrochloric acid acidizing fluid comprises the following steps: sequentially adding a solvent, a surfactant and chloromethyl naphthalene quinoline quaternary ammonium salt mixture into a reactor, and stirring at room temperature for 1 hour to obtain a product.
Preferably, the preparation method of the chloromethyl naphthalene quinoline quaternary ammonium salt mixture comprises the following steps: sequentially adding ethylene glycol, quinoline and 1-chloromethyl naphthalene into a reaction vessel, starting stirring, heating to a reaction temperature, maintaining a certain reaction time, and then cooling to room temperature to obtain chloromethyl naphthalene quinoline quaternary ammonium salt mixture.
Preferably, the molar ratio of the quinoline to the 1-chloromethylnaphthalene to the ethylene glycol is 1:1.05:5.4.
preferably, the reaction temperature is 95℃and the reaction time is 10 hours.
Preferably, the solvent is water, and the surfactant is fatty alcohol polyoxyethylene ether.
Preferably, the fatty alcohol-polyoxyethylene ether is peregal O-15, peregal O-20 and combinations thereof.
The invention relates to an application of a high-temperature corrosion inhibitor for high-concentration hydrochloric acid acidizing fluid, which adopts the technical scheme that: the method is applied to high-concentration hydrochloric acid acidizing fluid.
Preferably, the high-concentration hydrochloric acid acidizing fluid comprises the following components in percentage by mass: 28% of hydrochloric acid, 4% of formic acid, 1.0-2.0% of high-temperature corrosion inhibitor and the balance of water.
Preferably, the temperature of the high-concentration hydrochloric acid acidizing fluid is less than or equal to 150 ℃, and formic acid is used as a high-temperature corrosion inhibitor auxiliary agent.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, high-flash-point glycol is used as a solvent in the synthesis of the chloromethyl naphthalene quinoline quaternary ammonium salt, so that the occurrence of flash and other risks in the production process is prevented, and the synthesized chloromethyl naphthalene quinoline quaternary ammonium salt mixture is always in a liquid state, so that the subsequent compounding of the corrosion inhibitor is facilitated;
compared with the conventional benzoquinoline chloride quaternary ammonium salt, the chloromethyl naphthalene quinoline quaternary ammonium salt prepared by the method has more benzene ring structures, the corrosion inhibitor molecules are easier to adsorb on the metal surface, the film forming capability of the corrosion inhibitor on the metal surface is improved, the desorption speed of the corrosion inhibitor from the metal surface under the conditions of high temperature and high concentration hydrochloric acid is reduced, and thus the corrosion inhibition efficiency is obviously improved;
the high-temperature corrosion inhibitor for the high-concentration hydrochloric acid acidizing fluid is formed by reacting quinoline and 1-chloromethyl naphthalene in glycol solution to generate chloromethyl naphthalene quinoline quaternary ammonium salt, wherein the reaction product does not need to be purified, and then fatty alcohol polyoxyethylene ether and water are compounded; the whole production process has the advantages of no three-waste pollution, less corrosion inhibitor component types, simple process, no extremely toxic substances, no low flash point solvent, low cost and the like;
the high-temperature corrosion inhibitor for the high-concentration hydrochloric acid acidizing fluid is suitable for stratum acidizing treatment at the well temperature of normal temperature to 150 ℃, and the concentration of hydrochloric acid in the acidizing fluid is 28%.
Detailed Description
The following description of the preferred embodiments of the present invention is provided for the purpose of illustration and explanation only and is not intended to limit the present invention.
Example 1
Firstly, the high-temperature corrosion inhibitor for the high-concentration hydrochloric acid acidizing fluid disclosed by the invention comprises the following components in percentage by mass (see table 1):
TABLE 1 high temperature Corrosion inhibitor Components of example 1
The method specifically comprises the following steps:
(1) 111.7 parts of ethylene glycol, 43 parts of quinoline and 61.8 parts of 1-chloromethyl naphthalene are sequentially added into a reaction vessel and uniformly mixed;
(2) Placing the reaction vessel in an oil bath pot, and heating to 95 ℃;
(3) Keeping the reaction temperature at 95 ℃, and continuously stirring and reacting for 10 hours;
(4) Stopping heating and stirring, and cooling the reactant to room temperature to obtain chloromethyl naphthalene quinoline quaternary ammonium salt mixture;
(5) 60 parts of water, 13 parts of peregal O-15 and 27 parts of chloromethyl naphthalene quinoline quaternary ammonium salt mixture are sequentially added into a reactor, and stirring is continued for 1 hour at room temperature, so as to obtain the high-temperature corrosion inhibitor for the high-concentration hydrochloric acid acidizing fluid.
Example 2
Firstly, the preparation method of the high-temperature corrosion inhibitor for the high-concentration hydrochloric acid acidizing fluid comprises the following specific mass fractions (see table 2):
TABLE 2 high temperature Corrosion inhibitor Components of example 2
The method specifically comprises the following steps:
(1) 111.7 parts of ethylene glycol, 43 parts of quinoline and 61.8 parts of 1-chloromethyl naphthalene are sequentially added into a reaction vessel and uniformly mixed;
(2) Placing the reaction vessel in an oil bath pot, and heating to 95 ℃;
(3) Keeping the reaction temperature at 95 ℃, and continuously stirring and reacting for 10 hours;
(4) Stopping heating and stirring, and cooling the reactant to room temperature to obtain chloromethyl naphthalene quinoline quaternary ammonium salt mixture;
(5) 65 parts of water, 10 parts of peregal O-20 and 25 parts of chloromethyl naphthalene quinoline quaternary ammonium salt mixture are sequentially added into a reactor, and stirring is continued for 1 hour at room temperature, so that the high-temperature corrosion inhibitor for high-concentration hydrochloric acid acidizing fluid is obtained.
Example 3
Firstly, the preparation method of the high-temperature corrosion inhibitor for the high-concentration hydrochloric acid acidizing fluid comprises the following specific mass fractions (see table 3):
TABLE 3 high temperature corrosion inhibitor component of example 3
The method specifically comprises the following steps:
(1) 111.7 parts of ethylene glycol, 43 parts of quinoline and 61.8 parts of 1-chloromethyl naphthalene are sequentially added into a reaction vessel and uniformly mixed;
(2) Placing the reaction vessel in an oil bath pot, and heating to 95 ℃;
(3) Keeping the reaction temperature at 95 ℃, and continuously stirring and reacting for 10 hours;
(4) Stopping heating and stirring, and cooling the reactant to room temperature to obtain chloromethyl naphthalene quinoline quaternary ammonium salt mixture;
(5) 60 parts of water, 6 parts of peregal O-15, 6 parts of peregal O-20 and 28 parts of chloromethyl naphthalene quinoline quaternary ammonium salt mixture are sequentially added into a reactor, and stirring is continued for 1 hour at room temperature, so that the high-temperature corrosion inhibitor for high-concentration hydrochloric acid acidizing fluid is obtained.
Example 4
Firstly, the preparation method of the high-temperature corrosion inhibitor for the high-concentration hydrochloric acid acidizing fluid comprises the following specific mass fractions (see table 4):
TABLE 4 high temperature corrosion inhibitor component of example 4
The method specifically comprises the following steps:
(1) 125.2 parts of ethylene glycol, 43 parts of quinoline and 61.8 parts of 1-chloromethyl naphthalene are sequentially added into a reaction vessel and uniformly mixed;
(2) Placing the reaction vessel in an oil bath pot, and heating to 95 ℃;
(3) Keeping the reaction temperature at 95 ℃, and continuously stirring and reacting for 10 hours;
(4) Stopping heating and stirring, and cooling the reactant to room temperature to obtain chloromethyl naphthalene quinoline quaternary ammonium salt mixture;
(5) 60 parts of water, 13 parts of peregal O-20 and 27 parts of chloromethyl naphthalene quinoline quaternary ammonium salt mixture are sequentially added into a reactor, and stirring is continued for 1 hour at room temperature, so that the high-temperature corrosion inhibitor for high-concentration hydrochloric acid acidizing fluid is obtained.
Performance tests are carried out on the high-temperature corrosion inhibitors in the embodiments 1-4, the high-temperature corrosion inhibitors in each embodiment keep good corrosion inhibition performance under the conditions of 150 ℃ and 28% hydrochloric acid concentration, and the high-concentration hydrochloric acid acidizing fluid comprises the following components in percentage by mass: 28% of hydrochloric acid, 4% of formic acid, 1.0-2.0% of high-temperature corrosion inhibitor and the balance of water. Wherein each high temperature corrosion inhibitorThe corrosion rate under the condition of 150 ℃ and 28% hydrochloric acid concentration is 40 g/(m) 2 H) formic acid as a high-temperature corrosion inhibitor auxiliary. The results of the high temperature corrosion inhibitor test of examples 1-4 are shown in Table 5.
TABLE 5 results of high temperature Corrosion inhibitor test of examples 1-4
The above description is only a few preferred embodiments of the present invention, and any person skilled in the art may make modifications to the above described embodiments or make modifications to the same. Accordingly, the corresponding simple modifications or equivalent changes according to the technical scheme of the present invention fall within the scope of the claimed invention.
Claims (10)
1. A high-temperature corrosion inhibitor for high-concentration hydrochloric acid acidizing fluid is characterized in that: the composite material is prepared from the following raw materials in parts by weight: 20-30 parts of chloromethyl naphthalene quinoline quaternary ammonium salt mixture, 55-73 parts of solvent and 7-15 parts of surfactant.
2. The method for preparing the high-temperature corrosion inhibitor for the high-concentration hydrochloric acid acidizing fluid according to claim 1, which is characterized in that: the method comprises the following steps: sequentially adding a solvent, a surfactant and chloromethyl naphthalene quinoline quaternary ammonium salt mixture into a reactor, and stirring at room temperature for 1 hour to obtain a product.
3. The method for preparing the high-temperature corrosion inhibitor for the high-concentration hydrochloric acid acidizing fluid according to claim 1 or 2, which is characterized in that: the preparation method of the chloromethyl naphthalene quinoline quaternary ammonium salt mixture comprises the following steps: sequentially adding ethylene glycol, quinoline and 1-chloromethyl naphthalene into a reaction vessel, starting stirring, heating to a reaction temperature, maintaining a certain reaction time, and then cooling to room temperature to obtain chloromethyl naphthalene quinoline quaternary ammonium salt mixture.
4. The method for preparing the high-temperature corrosion inhibitor for the high-concentration hydrochloric acid acidizing fluid according to claim 3, which is characterized in that: the mol ratio of the quinoline to the 1-chloromethylnaphthalene to the glycol is 1:1.05:5.4.
5. the method for preparing the high-temperature corrosion inhibitor for the high-concentration hydrochloric acid acidizing fluid according to claim 4, which is characterized in that: the reaction temperature is 95 ℃, and the reaction time is 10 hours.
6. The method for preparing the high-temperature corrosion inhibitor for the high-concentration hydrochloric acid acidizing fluid according to claim 1 or 2, which is characterized in that: the solvent is water, and the surfactant is fatty alcohol polyoxyethylene ether.
7. The method for preparing the high-temperature corrosion inhibitor for the high-concentration hydrochloric acid acidizing fluid according to claim 6, which is characterized in that: the fatty alcohol polyoxyethylene ether is peregal O-15 and peregal O-20 and the combination thereof.
8. The use of the high temperature corrosion inhibitor for high concentration hydrochloric acid acidizing fluid as claimed in claim 7, characterized in that: the method is applied to high-concentration hydrochloric acid acidizing fluid.
9. The use of the high temperature corrosion inhibitor for high concentration hydrochloric acid acidizing fluid as claimed in claim 8, characterized in that: the high-concentration hydrochloric acid acidizing fluid comprises the following components in percentage by mass: 28% of hydrochloric acid, 4% of formic acid, 1.0-2.0% of high-temperature corrosion inhibitor and the balance of water.
10. The use of the high temperature corrosion inhibitor for high concentration hydrochloric acid acidizing fluid according to claim 9, characterized in that: the temperature of the high-concentration hydrochloric acid acidizing fluid is less than or equal to 150 ℃, and formic acid is used as a high-temperature corrosion inhibitor auxiliary agent.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310163204.6A CN116285925A (en) | 2023-02-24 | 2023-02-24 | High-temperature corrosion inhibitor for high-concentration hydrochloric acid acidizing fluid and preparation method thereof |
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| CN202310163204.6A CN116285925A (en) | 2023-02-24 | 2023-02-24 | High-temperature corrosion inhibitor for high-concentration hydrochloric acid acidizing fluid and preparation method thereof |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1760320A (en) * | 2005-10-18 | 2006-04-19 | 中国石油大学(华东) | New typed high temperature acidified corrosion inhibitor and preparation method |
| CN107207954A (en) * | 2014-12-22 | 2017-09-26 | 伦萨公司 | Corrosion inhibitor composition for acidification |
| CN108410444A (en) * | 2018-03-16 | 2018-08-17 | 中国石油大学(华东) | A kind of acidification corrosion inhibitor and the preparation method and application thereof based on dimer indole derivative |
| CN112226220A (en) * | 2020-09-29 | 2021-01-15 | 陈力群 | High-temperature acidizing corrosion inhibitor and preparation method thereof |
| CN114634803A (en) * | 2022-04-13 | 2022-06-17 | 西南石油大学 | Ultrahigh-temperature-resistant acidizing corrosion inhibitor suitable for 180-200 ℃ and preparation method thereof |
| CN115449363A (en) * | 2022-09-15 | 2022-12-09 | 西南石油大学 | Preparation method of quaternary ammonium salt type high-temperature acidizing corrosion inhibitor |
-
2023
- 2023-02-24 CN CN202310163204.6A patent/CN116285925A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1760320A (en) * | 2005-10-18 | 2006-04-19 | 中国石油大学(华东) | New typed high temperature acidified corrosion inhibitor and preparation method |
| CN107207954A (en) * | 2014-12-22 | 2017-09-26 | 伦萨公司 | Corrosion inhibitor composition for acidification |
| CN108410444A (en) * | 2018-03-16 | 2018-08-17 | 中国石油大学(华东) | A kind of acidification corrosion inhibitor and the preparation method and application thereof based on dimer indole derivative |
| CN112226220A (en) * | 2020-09-29 | 2021-01-15 | 陈力群 | High-temperature acidizing corrosion inhibitor and preparation method thereof |
| CN114634803A (en) * | 2022-04-13 | 2022-06-17 | 西南石油大学 | Ultrahigh-temperature-resistant acidizing corrosion inhibitor suitable for 180-200 ℃ and preparation method thereof |
| CN115449363A (en) * | 2022-09-15 | 2022-12-09 | 西南石油大学 | Preparation method of quaternary ammonium salt type high-temperature acidizing corrosion inhibitor |
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