CN112899690A - Triazine high-salt-water corrosion inhibitor and preparation method thereof - Google Patents
Triazine high-salt-water corrosion inhibitor and preparation method thereof Download PDFInfo
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- CN112899690A CN112899690A CN202110045916.9A CN202110045916A CN112899690A CN 112899690 A CN112899690 A CN 112899690A CN 202110045916 A CN202110045916 A CN 202110045916A CN 112899690 A CN112899690 A CN 112899690A
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- Prior art keywords
- corrosion inhibitor
- water
- triazine
- salt
- heterocyclic compound
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 230000007797 corrosion Effects 0.000 title claims abstract description 43
- 238000005260 corrosion Methods 0.000 title claims abstract description 43
- 239000003112 inhibitor Substances 0.000 title claims abstract description 33
- JYEUMXHLPRZUAT-UHFFFAOYSA-N 1,2,3-triazine Chemical compound C1=CN=NN=C1 JYEUMXHLPRZUAT-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 238000002360 preparation method Methods 0.000 title claims abstract description 7
- 150000002391 heterocyclic compounds Chemical class 0.000 claims abstract description 9
- IRAGEBXSFXWYNX-UHFFFAOYSA-N 2-(1,3,5-triazinan-1-yl)ethanol Chemical compound OCCN1CNCNC1 IRAGEBXSFXWYNX-UHFFFAOYSA-N 0.000 claims abstract description 8
- GIAFURWZWWWBQT-UHFFFAOYSA-N 2-(2-aminoethoxy)ethanol Chemical compound NCCOCCO GIAFURWZWWWBQT-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000002738 chelating agent Substances 0.000 claims abstract description 8
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 8
- 239000002904 solvent Substances 0.000 claims abstract description 8
- 239000003381 stabilizer Substances 0.000 claims abstract description 8
- 239000002270 dispersing agent Substances 0.000 claims abstract description 7
- 239000000203 mixture Substances 0.000 claims abstract description 7
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 claims description 22
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid group Chemical group C(CC(O)(C(=O)O)CC(=O)O)(=O)O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 15
- AEMFILKJLUORPU-UHFFFAOYSA-N hydroxylamine;morpholine Chemical group ON.C1COCCN1 AEMFILKJLUORPU-UHFFFAOYSA-N 0.000 claims description 13
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 12
- 235000005074 zinc chloride Nutrition 0.000 claims description 11
- 239000011592 zinc chloride Substances 0.000 claims description 11
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 10
- MTNDZQHUAFNZQY-UHFFFAOYSA-N imidazoline Chemical compound C1CN=CN1 MTNDZQHUAFNZQY-UHFFFAOYSA-N 0.000 claims description 10
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 9
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 9
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 6
- 150000002500 ions Chemical class 0.000 claims description 6
- 229920002125 Sokalan® Polymers 0.000 claims description 4
- 239000004584 polyacrylic acid Substances 0.000 claims description 4
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical group [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 claims description 4
- 229960001763 zinc sulfate Drugs 0.000 claims description 4
- 229910000368 zinc sulfate Inorganic materials 0.000 claims description 4
- DUIOKRXOKLLURE-UHFFFAOYSA-N 2-octylphenol Chemical group CCCCCCCCC1=CC=CC=C1O DUIOKRXOKLLURE-UHFFFAOYSA-N 0.000 claims description 3
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 2
- 238000003756 stirring Methods 0.000 abstract description 23
- 230000005764 inhibitory process Effects 0.000 abstract description 7
- 238000002474 experimental method Methods 0.000 abstract description 6
- 238000005536 corrosion prevention Methods 0.000 abstract description 4
- 230000001681 protective effect Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 6
- 239000003129 oil well Substances 0.000 description 5
- 238000005303 weighing Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229940079593 drug Drugs 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/04—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in markedly acid liquids
Abstract
The invention relates to a triazine high-salt water corrosion inhibitor and a preparation method thereof, wherein the corrosion inhibitor comprises the following components in percentage by mass: 20-50% of heterocyclic compound, 3-8% of reducing agent, 5-15% of ion chelating agent, 3-6% of dispersing agent, 1-5% of water quality stabilizer and the balance of solvent. The heterocyclic compound is a mixture of hydroxyethyl hexahydro-s-triazine and diglycolamine in a ratio of 1:3 to 3: 1. Firstly, adding the water quality stabilizer and the reducing agent into water, uniformly stirring, then adding the heterocyclic compound, the ion chelating agent, the dispersing agent and the solvent, and uniformly stirring to obtain a finished product. The corrosion inhibitor can be quickly adsorbed and precipitated on the surface of a pipe to form a multi-layer compact protective film. The invention can be widely applied to the corrosion prevention of oil and gas well pipelines of high-salinity produced water. The experiment result shows that the corrosion inhibition rate is up to 96.0-97.2% when the experiment temperature is 60 ℃, the experiment time is 168 hours and the dosage is 1.0%.
Description
Technical Field
The invention belongs to the field of petrochemical industry, and particularly relates to a triazine high-salt water corrosion inhibitor and a preparation method thereof.
Background
In the development and production of oil fields at home and abroad, the corrosion of an oil well is a major problem which restricts the normal exploitation of the oil field. Because the water of the oil well produced liquid contains Ca2+、Mg2+、CO2、SO4 2-、Cl-、HCO-、H2S, SRB (sulfate reducing bacteria) and other corrosive media can cause corrosion of oil wells and pipeline equipment, which brings great harm to production and causes great economic loss. Meanwhile, the corrosive medium can cause serious corrosion to metal equipment in the processes of crude oil acquisition, collection, transportation and smelting, and the like, so that environmental pollution and economic loss are caused.
At present, corrosion inhibitors used in China mainly comprise quaternary ammonium salt, Mannich base and imidazoline, wherein the quaternary ammonium salt corrosion inhibitor has poor corrosion inhibition effect, the Mannich base corrosion inhibitor has poor water solubility, the conventional oilfield corrosion inhibitor imidazoline and derivatives thereof have high cost, and main components of the oilfield corrosion inhibitor imidazoline can be changed under the harsh environment of high-temperature and high-salinity produced fluid of an oil well, so that the corrosion inhibitor is ineffective or the corrosion inhibition effect is greatly reduced. Therefore, the development of the corrosion inhibitor with high temperature resistance, good water solubility and good corrosion inhibition effect has important significance in corrosion prevention of oil field pipelines.
Disclosure of Invention
The invention provides a triazine high-salt water corrosion inhibitor and a preparation method thereof, which are used for solving the corrosion prevention problem of oil wells in harsh environments such as high-temperature and high-salinity output liquid.
The technical solution of the invention is as follows: the triazine high-salt water corrosion inhibitor comprises the following components in percentage by mass: 20-50% of heterocyclic compound, 3-8% of reducing agent, 5-15% of ion chelating agent, 3-6% of dispersing agent, 1-5% of water quality stabilizer and the balance of solvent.
The heterocyclic compound is a mixture of hydroxyethyl hexahydro-s-triazine and diglycolamine in a ratio of 1:3 to 3: 1.
The reducing agent is morpholine hydroxylamine.
The ion chelating agent is one of citric acid or polyacrylic acid.
The dispersing agent is octyl phenol polyoxyethylene ether OP-10 or imidazoline polyoxyethylene ether.
The water quality stabilizer is zinc sulfate or zinc chloride.
The solvent is one or two of water, methanol, ethanol and glycol.
A triazine high-salt water corrosion inhibitor is prepared through adding water stabilizer and reducer to water, stirring, adding heterocyclic compound, ion chelating agent, disperser and solvent, and stirring.
The invention provides a triazine high-salt water corrosion inhibitor and a preparation method thereof. The invention can be widely applied to the corrosion prevention of oil and gas well pipelines of high-salinity produced water. The performance of the corrosion inhibitor is evaluated according to the standard corrosion inhibitor imidazoline MH Q/SY CQ 17057-plus 2017 of China oil and gas company Limited enterprise, and the experimental result shows that the corrosion inhibition rate is up to 96.0-97.2% when the experimental temperature is 60 ℃, the experimental time is 168 hours and the addition amount is 1.0%.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clear, the present invention is further described in detail. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. All other embodiments obtained by a person skilled in the art without making any inventive step are within the scope of protection of the present invention.
Example 1
Firstly, accurately weighing 45g of zinc chloride, morpholine hydroxylamine and water according to the mass fractions of 3%, 5% and 37%, adding the zinc chloride, morpholine hydroxylamine and water into a beaker, and stirring until the zinc chloride, morpholine hydroxylamine and water are completely dissolved; adding 30 mass percent of hydroxyethyl hexahydro-s-triazine and diglycolamine 1 into a beaker: 1 for 10min, continuously stirring for 30 g; continuously adding 10g of polyacrylic acid weighed according to the mass fraction of 10% and 6g of imidazoline polyoxyethylene ether weighed according to the mass fraction of 6%, and continuously stirring until the temperature is below 38 ℃; adding 9g of ethanol which is weighed according to the mass fraction of 9 percent, and uniformly stirring to obtain the triazine high-salt water corrosion inhibitor.
Example 2
Firstly, accurately weighing 45g of zinc chloride, morpholine hydroxylamine and water according to the mass fractions of 3%, 5% and 37%, adding the zinc chloride, morpholine hydroxylamine and water into a beaker, and stirring until the zinc chloride, morpholine hydroxylamine and water are completely dissolved; adding 30g of a mixture of hydroxyethyl hexahydro-s-triazine and diglycolamine in a mass ratio of 1:2 into a beaker, and continuously stirring for 10 min; continuously adding 10g of polyacrylic acid weighed according to the mass fraction of 10% and 6g of imidazoline polyoxyethylene ether weighed according to the mass fraction of 6%, and continuously stirring until the temperature is below 38 ℃; adding 9g of ethanol which is weighed according to the mass fraction of 9 percent, and uniformly stirring to obtain the triazine high-salt water corrosion inhibitor.
Example 3
Firstly, accurately weighing 45g of zinc chloride, morpholine hydroxylamine and water according to the mass fractions of 5%, 5% and 35%, adding the zinc chloride, morpholine hydroxylamine and water into a beaker, and stirring until the zinc chloride, morpholine hydroxylamine and water are completely dissolved; adding 25g of a mixture of hydroxyethyl hexahydro-s-triazine and diglycolamine in a mass ratio of 1:2 into a beaker, and continuously stirring for 10 min; continuously adding 15g of citric acid weighed according to the mass fraction of 15% and 6g of imidazoline polyoxyethylene ether weighed according to the mass fraction of 6%, and continuously stirring until the temperature is below 38 ℃; adding 9g of ethanol which is weighed according to the mass fraction of 9 percent, and uniformly stirring to obtain the triazine high-salt water corrosion inhibitor.
Example 4
Firstly, accurately weighing 42g of zinc sulfate, morpholine hydroxylamine and water according to the mass fractions of 3%, 8% and 31%, adding the weighed materials into a beaker, and stirring until the materials are completely dissolved; adding 30g of a mixture of hydroxyethyl hexahydro-s-triazine and diglycolamine in a mass ratio of 1:3 into a beaker, and continuously stirring for 10 min; continuously adding 15g of citric acid weighed according to the mass fraction of 15% and 3g of octyl phenol polyoxyethylene ether weighed according to the mass fraction of 3%, and continuously stirring until the temperature is below 38 ℃; and adding 10g of ethylene glycol weighed according to the mass fraction of 10%, and uniformly stirring to obtain the triazine high-salt water corrosion inhibitor.
Example 5
Firstly, accurately weighing 44g of zinc sulfate, morpholine hydroxylamine and water according to the mass fractions of 5%, 8% and 31%, adding the weighed materials into a beaker, and stirring until the materials are completely dissolved; adding 30g of a mixture of hydroxyethyl hexahydro-s-triazine and diglycolamine in a mass ratio of 1:3 into a beaker, and continuously stirring for 10 min; continuously adding 15g of citric acid weighed according to the mass fraction of 15% and 6g of octylphenol polyoxyethylene ether weighed according to the mass fraction of 6%, and continuously stirring until the temperature is below 38 ℃; and 5g of ethylene glycol weighed according to the mass fraction of 5 percent is added and stirred uniformly to obtain the triazine high-salt water corrosion inhibitor.
The performance of the corrosion inhibitor is evaluated according to the standard corrosion inhibitor imidazoline MH Q/SY CQ 17057-plus 2017 of China oil and gas company Limited corporation, and the corrosion inhibition performance is measured as follows:
the test temperature is 60 ℃ by adopting a static hanging piece method, the test time is 168 hours, the drug adding amount is 0.4 percent,
the test temperature is 60 ℃ by adopting a static hanging piece method, the test time is 168 hours, the drug adding amount is 1.0 percent,
the experiment result shows that the corrosion inhibition rate is up to 96.0-97.2% when the experiment temperature is 60 ℃, the experiment time is 168 hours and the dosage is 1.0%.
Claims (7)
1. The triazine high-salt water corrosion inhibitor is characterized by comprising the following components in percentage by mass: 20-50% of heterocyclic compound, 3-8% of reducing agent, 5-15% of ion chelating agent, 3-6% of dispersing agent, 1-5% of water quality stabilizer and the balance of solvent, wherein the heterocyclic compound is a mixture of hydroxyethyl hexahydro-s-triazine and diglycolamine in a ratio of 1:3 to 3: 1.
2. The triazine high-salt-water corrosion inhibitor as claimed in claim 1, wherein the reducing agent is morpholine hydroxylamine.
3. The triazine high-salt-water corrosion inhibitor as claimed in claim 1, wherein the ion chelating agent is citric acid or polyacrylic acid.
4. The triazine high-salinity water corrosion inhibitor as claimed in claim 1, wherein the dispersant is octyl phenol polyoxyethylene ether OP-10 or imidazoline polyoxyethylene ether.
5. The triazine high-salinity water corrosion inhibitor as claimed in claim 1, wherein the water quality stabilizer is zinc sulfate or zinc chloride.
6. The triazine high-salt-water corrosion inhibitor as claimed in claim 1, wherein the solvent is one or two of water, methanol, ethanol and glycol.
7. The preparation method of the triazine high-salt-water corrosion inhibitor as claimed in claims 1 to 6, wherein the water quality stabilizer and the reducing agent are added into water and stirred uniformly, and then the heterocyclic compound, the ion chelating agent, the dispersing agent and the solvent are added and stirred uniformly to obtain a finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110045916.9A CN112899690A (en) | 2021-01-14 | 2021-01-14 | Triazine high-salt-water corrosion inhibitor and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110045916.9A CN112899690A (en) | 2021-01-14 | 2021-01-14 | Triazine high-salt-water corrosion inhibitor and preparation method thereof |
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| CN112899690A true CN112899690A (en) | 2021-06-04 |
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| CN202110045916.9A Pending CN112899690A (en) | 2021-01-14 | 2021-01-14 | Triazine high-salt-water corrosion inhibitor and preparation method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050032664A1 (en) * | 2003-08-05 | 2005-02-10 | Tony Gichuhi | Corrosion inhibitor |
| CN102978624A (en) * | 2012-12-06 | 2013-03-20 | 中国石油集团工程设计有限责任公司 | Oil-gas field gas transmission pipeline corrosion inhibitor and preparation method thereof |
| CN107381842A (en) * | 2017-07-21 | 2017-11-24 | 国家海洋局天津海水淡化与综合利用研究所 | It is a kind of to copper and carbon steel effective non-phosphorus scale and corrosion inhibitor simultaneously |
| CN108017163A (en) * | 2016-10-31 | 2018-05-11 | 中国石油化工股份有限公司 | Non-Phosphorus composite anti incrustation eorrosion snhibiter and its application and the processing method of recirculated cooling water |
| CN110952103A (en) * | 2019-12-06 | 2020-04-03 | 万华化学集团股份有限公司 | Carbon steel corrosion inhibitor for oxygen-containing salt water and preparation method thereof |
-
2021
- 2021-01-14 CN CN202110045916.9A patent/CN112899690A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050032664A1 (en) * | 2003-08-05 | 2005-02-10 | Tony Gichuhi | Corrosion inhibitor |
| CN102978624A (en) * | 2012-12-06 | 2013-03-20 | 中国石油集团工程设计有限责任公司 | Oil-gas field gas transmission pipeline corrosion inhibitor and preparation method thereof |
| CN108017163A (en) * | 2016-10-31 | 2018-05-11 | 中国石油化工股份有限公司 | Non-Phosphorus composite anti incrustation eorrosion snhibiter and its application and the processing method of recirculated cooling water |
| CN107381842A (en) * | 2017-07-21 | 2017-11-24 | 国家海洋局天津海水淡化与综合利用研究所 | It is a kind of to copper and carbon steel effective non-phosphorus scale and corrosion inhibitor simultaneously |
| CN110952103A (en) * | 2019-12-06 | 2020-04-03 | 万华化学集团股份有限公司 | Carbon steel corrosion inhibitor for oxygen-containing salt water and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 樊世忠: "《完井液与修井液》", 31 December 2004, 中国矿业大学出版社 * |
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Application publication date: 20210604 |