CN113150761A - anti-H2S corrosion inhibitor and preparation method thereof - Google Patents
anti-H2S corrosion inhibitor and preparation method thereof Download PDFInfo
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- CN113150761A CN113150761A CN202110037187.2A CN202110037187A CN113150761A CN 113150761 A CN113150761 A CN 113150761A CN 202110037187 A CN202110037187 A CN 202110037187A CN 113150761 A CN113150761 A CN 113150761A
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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
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D233/00—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings
- C07D233/54—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having two double bonds between ring members or between ring members and non-ring members
- C07D233/56—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having two double bonds between ring members or between ring members and non-ring members with only hydrogen atoms or radicals containing only hydrogen and carbon atoms, attached to ring carbon atoms
- C07D233/58—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having two double bonds between ring members or between ring members and non-ring members with only hydrogen atoms or radicals containing only hydrogen and carbon atoms, attached to ring carbon atoms with only hydrogen atoms or radicals containing only hydrogen and carbon atoms, attached to ring nitrogen atoms
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
- C23F11/10—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using organic inhibitors
- C23F11/14—Nitrogen-containing compounds
- C23F11/149—Heterocyclic compounds containing nitrogen as hetero atom
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/32—Anticorrosion additives
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Abstract
The invention provides an anti-H2The corrosion inhibitor for S corrosion is prepared from imidazoline, bromoalkane and metal halide according to the molar ratio of 2:1: 1. The invention relates to an anti-H2The bisimidazoline-based ionic liquid metal salt corrosion inhibitor in the S corrosion inhibitor has good water solubility, two imidazole rings in molecules can form a net structure, the adsorption capacity on base metal is enhanced, and the metal salt can effectively fill up gaps on an adsorption film, so that the adsorption film is more compact and the binding force is firmer. In addition, the metal salt can be used as a bridge, on one hand, the metal salt is easy to deposit on the metal surface, on the other hand, the high-valence Fe is easy to coordinate and adsorb with imidazoline, the adsorption effect of the corrosion inhibitor on the metal surface is enhanced, and the adsorption capacity of molecules on the matrix metal is also enhanced. Thereby making the metal toolHas better H resistance2S corrosion performance.
Description
Technical Field
The invention belongs to the technical field of chemical industry, and particularly relates to an anti-H2S corrosion inhibitor and its preparation method.
Background
H2S is often present in oil and gas as a component of natural gas or petroleum associated gas, H2S has strong corrosivity to steel after being dissolved in water, and can cause rapid overall corrosion and severe local corrosion of the steel, so that pipelines and equipment are corroded and lose efficacy. H2S can not only cause metal corrosion, but also cause hydrogen sulfide stress corrosion cracking, hydrogen induced cracking and the like, and seriously influences the production safety of oil and gas fields.
The addition of corrosion inhibitors is the most common for inhibiting H2One method of S etching. Currently the most commonly used anti-H2The S corrosion inhibitor takes S, N-containing heterocyclic organic matters as a main component, and is compounded with thiourea, derivatives thereof and other small molecules to improve the corrosion inhibition performance, but the heterocyclic organic matters are generally toxic, and a large amount of organic solvents must be compounded to pollute the environment. In recent years, in order to improve the environmental friendliness of the corrosion inhibitor, the imidazoline-based ionic liquid corrosion inhibitor is formed, only corrosion inhibiting molecules are contained, no solvent is contained, the environmental friendliness is greatly improved, but the corrosion inhibiting performance of the substance is poor, and the application of the substance is greatly influenced.
Disclosure of Invention
Based on the problems in the prior art, the invention aims to provide a method for inhibiting high H content in the oil and gas field exploitation and gathering process2H resistance of S medium to corrosion of station equipment2S corrosion inhibitor and its preparation method.
The invention is realized by the following technical scheme:
anti-H2S corrosion inhibitor, which comprises the following components in molar ratio: imidazoline, brominated alkanes and metal halides, wherein the molar ratio of the imidazoline to the brominated alkanes to the metal halides is 2:1: 1.
More preferably, the imidazoline is any one of 1-methylimidazoline, 1-ethylimidazoline and 1-heptadecylimidazoline.
In a further preferred embodiment, the alkyl bromide is any one of 1, 2-dibromoethane, 1, 3-dibromopropane, 1, 4-dibromobutane and 1, 5-dibromopentane.
Further, the metal halide is ferrous halide.
As a further preferred embodiment, the metal halide is FeF2、FeCl2、FeBr2、 FeI2Any one of them.
Further, the anti-H2The corrosion inhibitor for S corrosion is obtained by the following reaction:
wherein, X is any one of F, Cl, Br and I.
anti-H2The preparation method of the corrosion inhibitor for S corrosion comprises the following steps:
s1, weighing imidazoline, bromoalkane and metal halide according to a molar ratio of 2:1: 1;
s2, adding bromoalkane into a three-neck round-bottom flask, fixing a constant-pressure dropping funnel containing imidazoline and a condensation reflux device with a drying tube at the upper end of an energy converter of an ultrasonic cleaner, and carrying out ultrasonic treatment on the bromoalkane at normal temperature;
s3, dripping imidazoline into the brominated alkane subjected to ultrasonic treatment, then adopting intermittent ultrasonic wave to enable the clear liquid to become turbid, continuing ultrasonic treatment for 1 hour until white floccule is generated, continuing reaction, and filtering to obtain light yellow solid;
s4, mixing the light yellow solid obtained in the step S3 with acetone and metal halide, stirring for 30min at room temperature, and filtering to remove precipitates in the filtrate; adding dichloromethane into the filtered filtrate to generate green precipitate, filtering, rotary evaporating to remove acetone and dichloromethane, and vacuum drying to obtain anti-H2And S corrosion inhibitor.
Preferably, the ultrasonic treatment time in the step S2 is 25-35 min.
Preferably, the dropping time of the imidazoline in the step S3 is controlled within 30 min.
Preferably, the ratio of the working time to the off-time of the intermittent ultrasonic wave is 2: 1.
By adopting the technical scheme, the invention has the following beneficial effects:
the anti-H of the invention2The bis-imidazoline based ionic liquid metal salt corrosion inhibitor in the S corrosion inhibitor has good water solubility, two imidazoline rings in a molecule can form a net structure, the adsorption capacity on base metal is enhanced, and the metal salt can effectively fill up gaps on an adsorption film, so that the adsorption film is more compact and the binding force is firmer. In addition, the metal salt can be used as a bridge, on one hand, the metal salt is easy to deposit on the metal surface, on the other hand, the high-valence Fe is easy to coordinate and adsorb with imidazolinine, the adsorption effect of the corrosion inhibitor on the metal surface is enhanced, and the adsorption capacity of molecules on the matrix metal is also enhanced. Thereby making the metal have better H resistance2S corrosion performance.
The foregoing is a summary of the present invention, and in order to provide a clear understanding of the technical means of the present invention and to be implemented in accordance with the present specification, preferred embodiments of the present invention are described in detail below.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to examples, but it will be understood by those skilled in the art that the following examples are only illustrative of the present invention and should not be construed as limiting the scope of the present invention.
In the examples, the specific conditions are not specified, and the reaction is carried out under the conventional conditions or conditions recommended by the manufacturer unless otherwise specified. All starting materials mentioned in the following examples are obtained from published commercial sources unless otherwise specified.
Aiming at the current anti-H2The corrosion inhibitor corroded by S is a mono-imidazoline molecule, is in point adsorption, has poor adsorption effect, is added with a large amount of solvent and surfactant, has great environmental hazard and the like, and provides the following solution scheme:
the invention provides an anti-H2S corrosion inhibitor, which comprises the following components in molar ratio: imidazoline, brominated alkanes and metal halides, wherein the molar ratio of the imidazoline to the brominated alkanes to the metal halides is 2:1: 1.
More preferably, the imidazoline is any one of 1-methylimidazoline, 1-ethylimidazoline and 1-heptadecylimidazoline.
In a further preferred embodiment, the alkyl bromide is any one of 1, 2-dibromoethane, 1, 3-dibromopropane, 1, 4-dibromobutane and 1, 5-dibromopentane.
Further, the metal halide is ferrous halide.
As a further preferred embodiment, the metal halide is FeF2、FeCl2、FeBr2、 FeI2Any one of them.
As a preferred option, anti-H2The corrosion inhibitor for S corrosion comprises the following components in percentage by mass: 1-methylimidazoline, 1, 2-dibromoethane and ferrous halide, wherein the molar ratio of the 1-methylimidazoline to the 1, 2-dibromoethane to the ferrous halide is 2:1: 1.
The invention also provides the anti-H2The preparation method of the corrosion inhibitor for S corrosion comprises the following steps:
s1, weighing imidazoline, bromoalkane and metal halide according to a molar ratio of 2:1: 1;
s2, adding bromoalkane into a three-neck round-bottom flask, fixing a constant-pressure dropping funnel containing imidazoline and a condensation reflux device with a drying tube at the upper end of an energy converter of an ultrasonic cleaner, and carrying out ultrasonic treatment on the bromoalkane at normal temperature;
s3, dripping imidazoline into the brominated alkane subjected to ultrasonic treatment, then adopting intermittent ultrasonic wave to enable the clear liquid to become turbid, continuing ultrasonic treatment for 1 hour until white floccule is generated, continuing reaction, and filtering to obtain light yellow solid;
s4, mixing the light yellow solid obtained in the step S3 with acetone and metal halide, stirring for 30min at room temperature, and filtering to remove precipitates in the filtrate; adding dichloromethane into the filtered filtrate to generate green precipitate, filtering, rotary evaporating to remove acetone and dichloromethane, and vacuum drying to obtain anti-H2And S corrosion inhibitor.
Preferably, the ultrasonic treatment time in the step S2 is 25-35 min.
Preferably, the dropping time of the imidazoline in the step S3 is controlled within 30 min.
Preferably, the ratio of the working time to the off-time of the intermittent ultrasonic wave is 2: 1.
The reaction principle achieved by the present invention, namely the H resistance, is illustrated below by a specific embodiment2The corrosion inhibitor for S corrosion is obtained by the following reaction:
wherein, X is any one of F, Cl, Br and I.
Each imidazoline group selected by the invention contains N and can form chemical adsorption with metal. The carbon chains among the bisimidazoline groups can form a net structure on the surface of the metal, so that the adsorption effect of the corrosion inhibitor is enhanced, and the bonding strength of the corrosion inhibitor film is increased. The metal salt can effectively fill up the gaps on the adsorption film, so that the adsorption film is more compact and the binding force is firmer.
The present invention will be described in further detail with reference to examples and comparative examples.
It should be noted that:
the corrosion rate of the corrosion inhibitor in the following examples is determined by the following method: medium composition: cl-： 60701.52mg/L、Ca2+:19720mg/L、Mg2+：1949.6mg/L、Na+: 13104.17 mg/L; test temperature: 25 ℃; test time: 96 hours; test materials: l245NS steel.
Polishing L245NS steel, cleaning with petroleum ether, acetone and ethanol, drying, weighing, placing prepared sample in autoclave, adding 100ppm corrosion inhibitor, stirring, hanging weighed L245NS steel in autoclave, sealing, and sealing with high purity N2After deoxygenation for 4H, the temperature is raised to 25 ℃, and high-purity H is introduced2S and maintain H2S pressure is 0.1MPa, and high-purity CO is introduced2And maintain CO2The pressure is 0.28MPa, and high-purity N is introduced2Pressurizing until the total pressure is stabilized at 2 MPa. And (4) taking out the sample after the sample is stabilized for 96 hours under the condition, removing a corrosion product film on the surface of the sample, weighing after drying, and calculating the corrosion rate.
Example 1:
resistance to H as described in the present embodiment2The corrosion inhibitor for S corrosion is prepared from 1-methylimidazoline, 1, 2-dibromoethane and FeF2Prepared according to the molar ratio of 2:1: 1.
The anti-H2The preparation method of the corrosion inhibitor for S corrosion comprises the following steps:
s1, weighing 1-methylimidazoline, 1, 2-dibromoethane and FeF according to the molar ratio of 2:1:12；
S2, adding 1, 2-dibromoethane into a three-neck round-bottom flask, fixing a constant-pressure dropping funnel containing 1-methylimidazoline and a condensation reflux device with a drying tube at the upper end of an energy converter of an ultrasonic cleaner, and carrying out ultrasonic treatment on the 1, 2-dibromoethane for 30min at normal temperature;
s3, dropwise adding 1-methylimidazoline into the 1, 2-dibromoethane subjected to ultrasonic treatment, then adopting intermittent ultrasonic waves with the working time to outage time ratio of 2:1 to enable the clear liquid to become turbid, continuing ultrasonic treatment for 1 hour until white floccules are generated, continuing reaction, and filtering to obtain light yellow solid;
s4, mixing the light yellow solid obtained in the step S3 with acetone and FeF2Mixing, stirring at room temperature for 30min, and filtering to remove precipitate; adding dichloromethane into the filtered filtrate to generate green precipitate, filtering, rotary evaporating to remove acetone and dichloromethane, and vacuum drying to obtain anti-H2And S corrosion inhibitor.
The anti-H obtained in this example2The corrosion inhibitor of S corrosion has good water solubility in a test medium, and the corrosion rate is 0.096 mm/a.
Example 2:
resistance to H as described in the present embodiment2The corrosion inhibitor for S corrosion is prepared from 1-ethylimidazoline, 1, 4-dibromobutane and FeCl2Prepared according to the molar ratio of 2:1: 1.
The anti-H2The preparation method of the corrosion inhibitor for S corrosion comprises the following steps:
s1, weighing 1-ethylimidazoline, 1, 4-dibromobutane and FeCl according to the molar ratio of 2:1:12；
S2, adding 1, 4-dibromobutane into a three-neck round-bottom flask, fixing a constant-pressure dropping funnel containing 1-ethylimidazoline and a condensation reflux device with a drying tube at the upper end of an energy converter of an ultrasonic cleaner, and carrying out ultrasonic treatment on the 1, 4-dibromobutane for 30min at normal temperature;
s3, slowly dripping 1-ethylimidazoline into the 1, 4-dibromobutane after ultrasonic treatment, then adopting intermittent ultrasonic waves with the working time to stop time ratio of 2:1 to enable the clear liquid to become turbid, continuing ultrasonic treatment for 1 hour until white floccules are generated, continuing reaction and filtering to obtain light yellow solid;
s4, mixing the light yellow solid obtained in the step S3 with acetone and FeCl2Mixing, stirring at room temperature for 30min, and filtering to remove precipitate; adding dichloromethane into the filtered filtrate to generate green precipitate, filtering, rotary evaporating to remove acetone and dichloromethane, and vacuum drying to obtain anti-H2And S corrosion inhibitor.
The anti-H obtained in this example2The S corrosion inhibitor has good water solubility in the test mediumThe etching rate was 0.092 mm/a.
Example 3:
resistance to H as described in the present embodiment2The corrosion inhibitor for S corrosion is prepared from 1-heptadecyl imidazoline, 1, 3-dibromopropane and FeBr2Prepared according to the molar ratio of 2:1: 1.
The anti-H2The preparation method of the corrosion inhibitor for S corrosion comprises the following steps:
s1, weighing 1-heptadecyl imidazoline, 1, 3-dibromopropane and FeBr according to the molar ratio of 2:1:12；
S2, adding 1, 3-dibromopropane into a three-neck round-bottom flask, fixing a constant-pressure dropping funnel containing 1-heptadecyl imidazoline and a condensation reflux device with a drying tube at the upper end of an energy converter of an ultrasonic cleaner, and carrying out ultrasonic treatment on the 1, 3-dibromopropane for 30min at normal temperature;
s3, dropwise adding 1-heptadecyl imidazoline into the 1, 3-dibromopropane after ultrasonic treatment, then adopting intermittent ultrasonic waves with the working time to outage time ratio of 2:1 to enable the clear liquid to become turbid, continuing ultrasonic treatment for 1 hour until white floccules are generated, continuing reaction, and filtering to obtain light yellow solid;
s4, mixing the light yellow solid obtained in the step S3 with acetone and FeBr2Mixing, stirring at room temperature for 30min, and filtering to remove precipitate; adding dichloromethane into the filtered filtrate to generate green precipitate, filtering, rotary evaporating to remove acetone and dichloromethane, and vacuum drying to obtain anti-H2And S corrosion inhibitor.
The anti-H obtained in this example2The corrosion inhibitor for S corrosion has good water solubility in a test medium, and the corrosion rate is 0.086 mm/a.
And (3) comparison test:
the corrosion inhibitor is the bisimidazoline based ionic liquid corrosion inhibitor, the addition amount is 100ppm, the water solubility in a test medium is good, and the corrosion rate is 0.116 mm/a.
The above examples show that bisimidazoline based ionic liquids and FeX2Has better synergistic effect, and the double imidazoline based ionic liquid metal salt after the two are compounded has corrosion inhibitionAgent pair H2The S corrosion has good inhibition effect.
anti-H of the invention2The bisimidazoline-based ionic liquid metal salt corrosion inhibitor in the S corrosion inhibitor has good water solubility, two imidazole rings in molecules can form a net structure, the adsorption capacity on base metal is enhanced, and the metal salt can effectively fill up gaps on an adsorption film, so that the adsorption film is more compact and the binding force is firmer. In addition, the metal salt can be used as a bridge, on one hand, the metal salt is easy to deposit on the metal surface, on the other hand, the high-valence Fe is easy to coordinate and adsorb with imidazoline, the adsorption effect of the corrosion inhibitor on the metal surface is enhanced, and the adsorption capacity of molecules on the matrix metal is also enhanced. Thereby making the metal have better H resistance2S corrosion performance.
Thus, the invention provides anti-H2The corrosion inhibitor for S corrosion is a bisimidazoline based ionic liquid metal salt corrosion inhibitor, has a compact self-adsorption film and is resistant to H2S corrosion resistance is excellent, and the H resistance is good2The S corrosion inhibitor and water are mutually soluble in any ratio, the water solubility is excellent, and no synergist is needed to be added.
In addition to this, the anti-H2The S corrosion inhibitor is suitable for environments with higher temperature and high H2S partial pressure, and has the advantages of good corrosion resistance effect, small using amount, low cost and environmental friendliness.
While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that the present invention is not limited to the details of the embodiments shown and described, but is capable of numerous equivalents and substitutions without departing from the spirit of the invention as set forth in the claims appended hereto.
Claims (9)
1. anti-H2The S corrosion inhibitor is characterized by comprising the following components in molar ratio: imidazoline, brominated alkanes and metal halides, wherein the molar ratio of the imidazoline to the brominated alkanes to the metal halides is 2:1: 1.
2. An anti-H according to claim 12The corrosion inhibitor for S corrosion is characterized in that: the imidazoline is any one of 1-methylimidazoline, 1-ethylimidazoline and 1-heptadecyl imidazoline.
3. An anti-H according to claim 12The corrosion inhibitor for S corrosion is characterized in that: the brominated alkane is any one of 1, 2-dibromoethane, 1, 3-dibromopropane, 1, 4-dibromobutane and 1, 5-dibromopentane.
4. An anti-H according to claim 12The corrosion inhibitor for S corrosion is characterized in that: the metal halide is ferrous halide.
5. An anti-H according to claim 12The corrosion inhibitor for S corrosion is characterized in that: the metal halide is FeF2、FeCl2、FeBr2、FeI2Any one of them.
6. anti-H2The preparation method of the corrosion inhibitor for S corrosion is characterized by comprising the following steps:
s1, weighing imidazoline, bromoalkane and metal halide according to a molar ratio of 2:1: 1;
s2, adding bromoalkane into a three-neck round-bottom flask, fixing a constant-pressure dropping funnel containing imidazoline and a condensation reflux device with a drying tube at the upper end of an energy converter of an ultrasonic cleaner, and carrying out ultrasonic treatment on the bromoalkane at normal temperature;
s3, dripping imidazoline into the brominated alkane subjected to ultrasonic treatment, then adopting intermittent ultrasonic wave to enable the clear liquid to become turbid, continuing ultrasonic treatment for 1 hour until white floccule is generated, continuing reaction, and filtering to obtain light yellow solid;
s4, mixing the light yellow solid obtained in the step S3 with acetone and metal halide, stirring for 30min at room temperature, and filtering to remove precipitates in the filtrate; adding dichloromethane into the filtered filtrate to generate green precipitate, filtering, and rotary evaporating to remove acetone anddichloromethane, and vacuum drying to obtain H-resistant product2And S corrosion inhibitor.
7. An anti-H according to claim 62The preparation method of the corrosion inhibitor for S corrosion is characterized by comprising the following steps: and the ultrasonic treatment time in the step S2 is 25-35 min.
8. An anti-H according to claim 62The preparation method of the corrosion inhibitor for S corrosion is characterized by comprising the following steps: the dropping time of imidazoline in the step S3 should be controlled within 30 min.
9. An anti-H according to claim 62The preparation method of the corrosion inhibitor for S corrosion is characterized by comprising the following steps: the ratio of the working time to the stop time of the intermittent ultrasonic wave is 2: 1.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102719233A (en) * | 2011-03-30 | 2012-10-10 | 中国石油化工股份有限公司 | Annular protecting liquid for oil and gas well |
| CN105256318A (en) * | 2015-10-21 | 2016-01-20 | 深圳市广昌达石油添加剂有限公司 | Novel imidazoline compound corrosion inhibitor and preparation method thereof |
| US20180334750A1 (en) * | 2017-05-19 | 2018-11-22 | King Fahd University Of Petroleum And Minerals | Composition and methods for inhibition of metal corrosion for use in the oil and gas industry |
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2021
- 2021-01-12 CN CN202110037187.2A patent/CN113150761B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102719233A (en) * | 2011-03-30 | 2012-10-10 | 中国石油化工股份有限公司 | Annular protecting liquid for oil and gas well |
| CN105256318A (en) * | 2015-10-21 | 2016-01-20 | 深圳市广昌达石油添加剂有限公司 | Novel imidazoline compound corrosion inhibitor and preparation method thereof |
| US20180334750A1 (en) * | 2017-05-19 | 2018-11-22 | King Fahd University Of Petroleum And Minerals | Composition and methods for inhibition of metal corrosion for use in the oil and gas industry |
| CN109112548A (en) * | 2018-09-29 | 2019-01-01 | 中国石油天然气集团有限公司 | A kind of anti-CO2Corrode gathering line corrosion inhibiter |
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| Title |
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