CN107555621B - Oil-soluble phosphorus-free corrosion and scale inhibitor for oil field and preparation method thereof - Google Patents
Oil-soluble phosphorus-free corrosion and scale inhibitor for oil field and preparation method thereof Download PDFInfo
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- 230000007797 corrosion Effects 0.000 title claims abstract description 66
- 238000005260 corrosion Methods 0.000 title claims abstract description 66
- 239000002455 scale inhibitor Substances 0.000 title claims abstract description 40
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- DCEMCPAKSGRHCN-UHFFFAOYSA-N oxirane-2,3-dicarboxylic acid Chemical compound OC(=O)C1OC1C(O)=O DCEMCPAKSGRHCN-UHFFFAOYSA-N 0.000 claims abstract description 38
- MCTWTZJPVLRJOU-UHFFFAOYSA-N 1-methyl-1H-imidazole Chemical compound CN1C=CN=C1 MCTWTZJPVLRJOU-UHFFFAOYSA-N 0.000 claims abstract description 19
- ADJMNWKZSCQHPS-UHFFFAOYSA-L zinc;6-methylheptanoate Chemical compound [Zn+2].CC(C)CCCCC([O-])=O.CC(C)CCCCC([O-])=O ADJMNWKZSCQHPS-UHFFFAOYSA-L 0.000 claims abstract description 19
- 235000003704 aspartic acid Nutrition 0.000 claims abstract description 15
- OQFSQFPPLPISGP-UHFFFAOYSA-N beta-carboxyaspartic acid Natural products OC(=O)C(N)C(C(O)=O)C(O)=O OQFSQFPPLPISGP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000003085 diluting agent Substances 0.000 claims abstract description 12
- CKLJMWTZIZZHCS-UWTATZPHSA-N D-aspartic acid Chemical compound OC(=O)[C@H](N)CC(O)=O CKLJMWTZIZZHCS-UWTATZPHSA-N 0.000 claims description 37
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 28
- 229960005261 aspartic acid Drugs 0.000 claims description 21
- 238000003756 stirring Methods 0.000 claims description 19
- 239000003208 petroleum Substances 0.000 claims description 15
- 238000006482 condensation reaction Methods 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 12
- 239000011574 phosphorus Substances 0.000 claims description 12
- 229910052698 phosphorus Inorganic materials 0.000 claims description 12
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 11
- 239000003112 inhibitor Substances 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 8
- CKLJMWTZIZZHCS-UHFFFAOYSA-N D-OH-Asp Natural products OC(=O)C(N)CC(O)=O CKLJMWTZIZZHCS-UHFFFAOYSA-N 0.000 claims description 7
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 6
- 229910052725 zinc Inorganic materials 0.000 claims description 6
- 239000011701 zinc Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- 238000009835 boiling Methods 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 abstract description 10
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 abstract description 8
- 229910000019 calcium carbonate Inorganic materials 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 229910052788 barium Inorganic materials 0.000 abstract description 3
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 abstract description 3
- 239000001506 calcium phosphate Substances 0.000 abstract description 3
- 229910000389 calcium phosphate Inorganic materials 0.000 abstract description 3
- 235000011010 calcium phosphates Nutrition 0.000 abstract description 3
- 229910052712 strontium Inorganic materials 0.000 abstract description 3
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 abstract description 3
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 abstract description 3
- 238000004140 cleaning Methods 0.000 abstract description 2
- CKLJMWTZIZZHCS-REOHCLBHSA-N L-aspartic acid Chemical compound OC(=O)[C@@H](N)CC(O)=O CKLJMWTZIZZHCS-REOHCLBHSA-N 0.000 abstract 1
- 230000005764 inhibitory process Effects 0.000 description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 230000000694 effects Effects 0.000 description 7
- 239000000243 solution Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 239000003129 oil well Substances 0.000 description 4
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
- 239000002332 oil field water Substances 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- XYFCBTPGUUZFHI-UHFFFAOYSA-N Phosphine Chemical compound P XYFCBTPGUUZFHI-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000001804 emulsifying effect Effects 0.000 description 2
- UBXAKNTVXQMEAG-UHFFFAOYSA-L strontium sulfate Chemical compound [Sr+2].[O-]S([O-])(=O)=O UBXAKNTVXQMEAG-UHFFFAOYSA-L 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 1
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- WOIHABYNKOEWFG-UHFFFAOYSA-N [Sr].[Ba] Chemical compound [Sr].[Ba] WOIHABYNKOEWFG-UHFFFAOYSA-N 0.000 description 1
- 229910001422 barium ion Inorganic materials 0.000 description 1
- 230000033558 biomineral tissue development Effects 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- MTNDZQHUAFNZQY-UHFFFAOYSA-N imidazoline Chemical compound C1CN=CN1 MTNDZQHUAFNZQY-UHFFFAOYSA-N 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229910000073 phosphorus hydride Inorganic materials 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920000137 polyphosphoric acid Polymers 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229910001427 strontium ion Inorganic materials 0.000 description 1
Landscapes
- Lubricants (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The invention discloses an oil-soluble phosphorus-free corrosion and scale inhibitor for oil fields and a preparation method thereof, wherein the oil-soluble phosphorus-free corrosion and scale inhibitor for oil fields comprises the following components in percentage by mass: 10-20% of aspartic acid, 10-15% of epoxy succinic acid, 5-10% of N-methylimidazole, 5-10% of zinc isooctanoate and 45-70% of diluent. The preparation method comprises the following steps: the corrosion and scale inhibitor has good oil solubility, can effectively inhibit the scaling of calcium phosphate, calcium carbonate and calcium sulfate, can disperse silt and other functions, simultaneously slows down the generation of barium and strontium scales in an oil field gathering and transportation system, reduces scale cleaning operation of oil field production sites, and reduces corrosion of pipelines.
Description
Technical Field
The invention belongs to the technical field of oil field water treatment agents, and particularly relates to an oil-soluble phosphorus-free corrosion and scale inhibitor for an oil field and a preparation method thereof.
Background
Along with the development of the oil field depth, the comprehensive water content is increased, the scaling problem of a shaft of an oil well, a ground system and a water injection stratum is often caused due to the thermodynamic instability and the chemical incompatibility of water, the liquid production amount of the oil well is reduced, pipelines and a heating furnace are blocked, meanwhile, the scaling also increases the tripping operation of the oil well, and the oil well is stopped or scrapped by serious people. At present, the scale inhibitor widely used in oil fields has obvious effect on carbonate scale and sulfate scale, and the barium-strontium scale inhibitor has difference in application in different blocks, so that the application of the corrosion and scale inhibitor in industrial water treatment has very important significance for prolonging the service life of equipment, preventing the scaling and corrosion of the equipment and ensuring the safe operation of the equipment.
In a circulating cooling water system used in the processes of petroleum exploitation, smelting and petrochemical production, because of inevitable material leakage and pipeline damage, oil stains exist in the water system, the oil stains flow along with water flow in the system and are deposited on the inner wall of equipment or a dead angle of turning circulating flow, scale forming particles such as calcium carbonate, calcium sulfate and the like dispersed in water are easy to gather on the surface of the equipment to finally form a precipitated and stubborn scale block, and metal corrosion of the parts is aggravated. Most of the scale and corrosion inhibitors sold in the market at present are water-soluble polyphosphoric acid, organic phosphine, polymer, imidazoline and the like, so that the effects of chelating, dispersing, corrosion inhibition and rust removal on oil dirt blocks are not achieved, the scale and corrosion inhibition performance is greatly reduced, and the more the dirt is accumulated, the more the pipeline is blocked and the serious corrosion is caused.
Therefore, the use of phosphorus-containing compounds has been limited, and the development of low-phosphorus or phosphorus-free environment-friendly scale and corrosion inhibitors has become the main direction of the current research field of water treatment, so that the method aims at the characteristics of water samples of part of special block oil extraction and gathering and transportation systems: the oil-soluble non-phosphorus corrosion and scale inhibitor for the oil field has the advantages of high overall mineralization degree and high hardness, contains calcium ions, barium ions, strontium ions, sulfate ions, bicarbonate ions and the like, scaling substances mainly comprise calcium carbonate, barium sulfate or strontium sulfate, and corrosive substances comprise basic ferrous oxide.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide an oil-soluble phosphorus-free corrosion and scale inhibitor for oil fields and a preparation method thereof, which mainly solve the technical problems of high phosphorus content and non-degradability of the existing water treatment agent, do not play roles of chelating dispersion and corrosion and rust removal on oil dirt blocks, greatly reduce the scale and corrosion inhibition performance of the oil dirt blocks, cause more dirt accumulation and further cause pipeline blockage and serious corrosion problems.
In order to achieve the purpose, the invention adopts the technical scheme that:
an oil-soluble non-phosphorus corrosion and scale inhibitor for oil fields comprises the following components in percentage by mass: 10-20% of aspartic acid, 10-15% of epoxy succinic acid, 5-10% of N-methylimidazole, 5-10% of zinc isooctanoate and 45-70% of diluent.
The oil-soluble non-phosphorus corrosion and scale inhibitor for the oil field comprises the following components in percentage by mass: 15 percent of aspartic acid, 12.5 percent of epoxy succinic acid, 7.5 percent of N-methylimidazole, 7.5 percent of zinc isooctanoate and 57.5 percent of diluent.
The aspartic acid is D-aspartic acid, L-aspartic acid or a mixture of the two.
The content of the metal zinc in the zinc isooctoate is 10-13%.
The diluent is petroleum ether, and the boiling range specification is 60-90 ℃ or 90-120 ℃.
The preparation method of the oil-soluble phosphorus-free corrosion and scale inhibitor for the oil field comprises the following steps:
adding aspartic acid, epoxy succinic acid and N-methylimidazole with the formula amount into a reactor, adding a diluent with the formula amount, stirring and heating for condensation reaction for 2-5 hours, then adding zinc isooctanoate with the formula amount, uniformly stirring, and cooling to normal temperature to obtain colorless to light yellow liquid, namely the oil-soluble scale and corrosion inhibitor solution.
The condensation reaction temperature is 40-55 ℃.
The oil soluble non-phosphorus corrosion and scale inhibitor solves the problem of scale and corrosion inhibition caused by oil stains, can be suitable for different oil stain circulating cooling water systems, plays a good role in emulsifying and dispersing the oil stains, and improves the full scale and corrosion inhibition effect, and has the following advantages:
1) the oil-soluble phosphorus-free corrosion and scale inhibitor prepared by the invention has good oil solubility, can effectively inhibit the scaling of calcium phosphate, calcium carbonate and calcium sulfate, can disperse the functions of silt and the like, simultaneously slows down the generation of barium and strontium scales in an oil field gathering and transportation system, reduces the scale removal operation of an oil field production site, and reduces the corrosion of pipelines;
2) the oil-soluble phosphorus-free corrosion and scale inhibitor does not contain phosphorus element, does not pollute the environment, and is an environment-friendly corrosion and scale inhibitor;
3) the oil-soluble phosphorus-free corrosion and scale inhibitor disclosed by the invention has the advantages that the content of effective components is 30-55%, the scale inhibition rate reaches more than 92%, and the corrosion inhibition rate is more than 85%;
the oil-soluble phosphorus-free corrosion and scale inhibitor has excellent corrosion and scale inhibition performance in oil field water system application, small addition amount, simple scale inhibition treatment process and obvious effect, and is easy to popularize and apply.
Detailed Description
The present invention will be described in further detail with reference to specific examples, which are provided for illustration only and are not intended to limit the scope of the present invention.
Example 1:
an oil-soluble non-phosphorus corrosion and scale inhibitor for oil fields comprises the following components in percentage by mass: 10-20% of aspartic acid, 10-15% of epoxy succinic acid, 5-10% of N-methylimidazole, 5-10% of zinc isooctanoate and 45-70% of diluent.
The preparation method of the oil-soluble phosphorus-free corrosion and scale inhibitor for the oil field comprises the following steps:
adding aspartic acid, epoxy succinic acid and N-methylimidazole with the formula amount into a reactor, adding a diluent with the formula amount, stirring, heating to 40-55 ℃ for condensation reaction for 2-5 hours, then adding zinc isooctanoate with the formula amount, uniformly stirring, and cooling to normal temperature to obtain colorless to light yellow liquid, namely the oil-soluble scale and corrosion inhibitor solution.
The corrosion and scale inhibitor prepared by the method is a phosphorus-free environment-friendly degradable water treatment agent, solves the technical problems of high phosphorus content and no degradation of the existing water treatment agent, has no effects of chelating dispersion and corrosion and rust removal on oil dirt blocks, causes more dirt accumulation to cause pipeline blockage and serious corrosion, has good oil solubility and good effect of emulsifying and dispersing the oil dirt, can effectively inhibit the scaling of calcium phosphate, calcium carbonate and calcium sulfate, can disperse silt and other functions, simultaneously slows down the generation of barium and strontium scales in an oil field gathering and transportation system, reduces the scale cleaning operation of an oil field production site, and lightens the corrosion of pipelines.
Example 2:
on the basis of example 1, the aspartic acid is D-aspartic acid, L-aspartic acid or a mixture of the two.
The content of the metal zinc in the zinc isooctoate is 10-13%.
The diluent is petroleum ether, and the boiling range specification is 60-90 ℃ or 90-120 ℃.
Adding 10-20% by mass of aspartic acid, 10-15% by mass of epoxy succinic acid and 5-10% by mass of N-methylimidazole into a reactor, adding 45-70% by mass of petroleum ether with a boiling range specification of 60-90 ℃ or 90-120 ℃, stirring and heating to 40-55 ℃ for condensation reaction for 2-5 hours, then adding 5-10% by mass of zinc isooctanoate, uniformly stirring, and cooling to 20-25 ℃ to obtain colorless to faint yellow liquid, namely the oil-soluble scale and corrosion inhibitor solution.
The oil-soluble phosphorus-free corrosion and scale inhibitor has excellent corrosion and scale inhibition performance in oil field water system application, small addition amount, simple scale inhibition treatment process and obvious effect, and is easy to popularize and apply.
Example 3:
the oil-soluble non-phosphorus corrosion and scale inhibitor for the oil field comprises the following components in percentage by mass: 15 percent of aspartic acid, 12.5 percent of epoxy succinic acid, 7.5 percent of N-methylimidazole, 7.5 percent of zinc isooctanoate and 57.5 percent of petroleum ether.
The preparation method of the oil-soluble phosphorus-free corrosion and scale inhibitor for the oil field comprises the following steps:
adding 15 parts of aspartic acid, 12.5 parts of epoxy succinic acid and 7.5 parts of N-methylimidazole into a reactor, adding 57.5 parts of petroleum ether, stirring, heating to 50 ℃ for condensation reaction for 3.5 hours, then adding 7.5 parts of zinc isooctanoate, uniformly stirring, and cooling to normal temperature to obtain colorless to light yellow liquid, namely the oil-soluble scale and corrosion inhibitor solution.
Example 4:
adding L-aspartic acid 10 parts, epoxy succinic acid 10 parts and N-methylimidazole 5 parts into a reactor, adding petroleum ether 70 parts, stirring, heating to 50 ℃ for condensation reaction for 2 hours, then adding zinc isooctanoate 5 parts, stirring uniformly, and cooling to normal temperature to obtain colorless to light yellow liquid, namely the oil-soluble scale and corrosion inhibitor solution.
Example 5:
adding 20 parts of D-aspartic acid, 15 parts of epoxy succinic acid and 10 parts of N-methylimidazole into a reactor, adding 45 parts of petroleum ether, stirring, heating to 40 ℃ for condensation reaction for 5 hours, then adding 10 parts of zinc isooctanoate, uniformly stirring, cooling to 20 ℃ to obtain colorless to light yellow liquid, namely the oil-soluble scale and corrosion inhibitor solution.
Example 6:
adding 18 parts of mixture of D-aspartic acid and L-aspartic acid, 13 parts of epoxy succinic acid and 8 parts of N-methylimidazole into a reactor, adding 53 parts of petroleum ether, stirring, heating to 40 ℃ for condensation reaction, carrying out condensation reaction for 5 hours, then adding 8 parts of zinc isooctanoate, uniformly stirring, and cooling to the normal temperature of 25 ℃ to obtain colorless to light yellow liquid, namely the oil-soluble scale and corrosion inhibitor solution.
Example 7:
adding 15 parts of D-aspartic acid, 8 parts of epoxy succinic acid, 6 parts of N-methylimidazole and 50 parts of petroleum ether into a reactor, stirring and heating to 45 ℃, carrying out condensation reaction for 2.5 hours, adding 65 parts of zinc isooctanoate, and uniformly mixing until the system is uniform to obtain the oil-soluble phosphorus-free corrosion and scale inhibitor, wherein the content of the effective component is 41.5%.
Example 8:
adding 16 parts of D-aspartic acid, 10 parts of epoxy succinic acid, 7 parts of N-methylimidazole and 60 parts of petroleum ether into a reactor, stirring and heating to 45 ℃, carrying out condensation reaction for 3 hours, adding 7 parts of zinc isooctanoate, and uniformly mixing until the system is uniform, thus obtaining the oil-soluble phosphorus-free corrosion and scale inhibitor, wherein the content of the effective components is 40%.
Example 9:
adding L-aspartic acid 15 parts, epoxy succinic acid 11 parts, N-methylimidazole 6 parts and petroleum ether 65 parts into a reactor, stirring and heating to 50 ℃, carrying out condensation reaction for 4 hours, adding zinc isooctanoate 7 parts, and uniformly mixing until the system is uniform to obtain the oil-soluble phosphorus-free corrosion and scale inhibitor, wherein the content of the effective component is 37.5%.
Example 10:
adding 15 parts of D-aspartic acid, 12 parts of epoxy succinic acid, 6 parts of N-methylimidazole and 60 parts of petroleum ether into a reactor, adding 6.5 parts of zinc isooctanoate, and uniformly mixing until the system is uniform to obtain the corrosion and scale inhibitor of the comparative example, wherein the content of the effective component is 39.7%.
Example 11:
and evaluating the synthesized scale inhibitor according to a method for evaluating the performance of the oil field scale inhibitor of the oil and gas industry standard SY/T5673-93 of the people's republic of China.
The results of the experiments are shown in the following tables, table 1 and table 2.
Table 1 scale inhibition performance test
TABLE 2 evaluation results of corrosion inhibitors
As can be seen from the experimental data in the table above, the oil-soluble phosphorus-free corrosion and scale inhibitor of the invention has a scale inhibition rate of more than 92% and a corrosion inhibition rate of more than 85%, which are superior to those of the composition of the comparative example.
Claims (7)
1. An oil-soluble non-phosphorus corrosion and scale inhibitor for oil fields is characterized in that: the composite material comprises the following components in percentage by mass: 10-20% of aspartic acid, 10-15% of epoxy succinic acid, 5-10% of N-methylimidazole, 5-10% of zinc isooctanoate and 45-70% of diluent; the diluent is petroleum ether.
2. The oil-soluble phosphorus-free corrosion and scale inhibitor for the oil field according to claim 1, which is characterized in that: the composite material comprises the following components in percentage by mass: 15 percent of aspartic acid, 12.5 percent of epoxy succinic acid, 7.5 percent of N-methylimidazole, 7.5 percent of zinc isooctanoate and 57.5 percent of diluent.
3. The oil-soluble phosphorus-free corrosion and scale inhibitor for the oil field according to claim 1 or 2, wherein the aspartic acid is D-aspartic acid, L-aspartic acid or a mixture of the D-aspartic acid and the L-aspartic acid.
4. The oil-soluble phosphorus-free corrosion and scale inhibitor for the oil field according to claim 1 or 2, which is characterized in that: the content of the metal zinc in the zinc isooctoate is 10-13%.
5. The oil-soluble phosphorus-free corrosion and scale inhibitor for the oil field according to claim 1 or 2, which is characterized in that: the specification of the petroleum ether boiling range is 60-90 ℃ or 90-120 ℃.
6. The preparation method of the oil-soluble phosphorus-free corrosion and scale inhibitor for the oil field according to any one of claims 1 to 5, characterized by comprising the following steps:
adding aspartic acid, epoxy succinic acid and N-methylimidazole with the formula amount into a reactor, adding a diluent with the formula amount, stirring and heating for condensation reaction for 2-5 hours, then adding zinc isooctanoate with the formula amount, uniformly stirring, and cooling to normal temperature to obtain colorless to light yellow liquid, namely the oil-soluble scale and corrosion inhibitor solution.
7. The preparation method of the oil-soluble phosphorus-free corrosion and scale inhibitor for the oil field according to claim 6, characterized by comprising the following steps: the condensation reaction temperature is 40-55 ℃.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103332795A (en) * | 2013-06-28 | 2013-10-02 | 武汉金鼎新环保科技有限公司 | Non-phosphorus composite corrosion and scale inhibitor |
| CN104071907A (en) * | 2014-06-25 | 2014-10-01 | 山东省泰和水处理有限公司 | Oil-soluble scale and corrosion inhibitor and synthesis method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103332795A (en) * | 2013-06-28 | 2013-10-02 | 武汉金鼎新环保科技有限公司 | Non-phosphorus composite corrosion and scale inhibitor |
| CN104071907A (en) * | 2014-06-25 | 2014-10-01 | 山东省泰和水处理有限公司 | Oil-soluble scale and corrosion inhibitor and synthesis method thereof |
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