CN107418548A - A kind of pyridine derivate and Mannich base combined high temperature acidification corrosion inhibitor - Google Patents
A kind of pyridine derivate and Mannich base combined high temperature acidification corrosion inhibitor Download PDFInfo
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- C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
- C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D213/06—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom containing only hydrogen and carbon atoms in addition to the ring nitrogen atom
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- C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D213/06—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom containing only hydrogen and carbon atoms in addition to the ring nitrogen atom
- C07D213/16—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom containing only hydrogen and carbon atoms in addition to the ring nitrogen atom containing only one pyridine ring
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Abstract
The invention discloses a kind of pyridine derivate and Mannich base combined high temperature acidification corrosion inhibitor, the hydroxy propane of 1,3 dichloride pyridine 2 of dimethylamino methyl phenylpropyl alcohol triazole Mannich base and 10~20 parts by weight, the methenamine of 3~5 parts by weight, the synergist of 5~7 parts by weight, the surfactant of 0.5~1 parts by weight, the dispersant of 2~3 parts by weight, the solvent of 40~60 parts by weight, the triethanolamine of 3~5 parts by weight and the formic acid of 5.0~9.0 parts by weight including 10~18 parts by weight；A kind of pyridine derivate and Mannich base combined high temperature acidification corrosion inhibitor is applied to 120~160 DEG C, have the compound slow corrosion agent prescription of excellent " property is stable, corrosion inhibition is good, is easy to site operation and cost advantage " concurrently simultaneously, the system is good with the imidazoline inhibitor good, conventional with the conventional acidizing additive compatibility in scene, other kinds of quaternary ammonium salt corrosion inhibitor compatibility, can be used in mixed way, easy for construction and high safety, convenience in transport store the features such as low with cost.
Description
Technical field
The present invention relates to acidification of oil field technical field of construction, the compound height of more particularly to a kind of pyridine derivate and Mannich base
Warm acidification corrosion inhibitor.
Background technology
In acidification of oil gas well, particularly in high temperature deep well and ultradeep well carry out concentrated hydrochloric acid or a large amount of acid acidifyings, primarily
Task be to solve etching problem of the high temperature acidified liquid to oil well casing equipment.In acid cleaning process, especially inorganic acid is matched somebody with somebody
The pickle of system, it causes a certain degree of corrosion and destruction to hardware and material.In addition, produced after metal and acid reaction
Hydrogen hydrogen embrittlement can be caused to corrode hardware, and can also take substantial amounts of sour gas out of and form acid mist, in hot conditions
Lower meeting is further such that underground operation tool and down-hole string working condition deteriorate, it is therefore necessary to the corruption to metal under hot environment
Targetedly inhibition measure is taken in erosion.High-temperature acidification corrosion inhibitor is mainly used in preventing hydrochloric acid or mud acid during high-temperature oil well acidizing treatment
Corrosion of the solution to hardware or down-hole string, to ensure that the implementation of oil well acidation fracturing technology and volume increase, Steady product technique are arranged
The realization applied.When the oil field high temperature deep well having in the past is using concentrated hydrochloric acid acidifying oil well, due to not preferable anti-corrosion, often
The accidents such as generation down-hole oil tube dropout.Therefore, in HTHP oil well acidation work progress, exactly it is close in acid solution and adds height
Warm acidification corrosion inhibitor and suppress corrosion of the acid solution to down-hole string.
With the development of drilling technology and the progress of oil recovery technique, the input exploitation of a large amount of deep-wells, ultradeep well, measure is acidified
Amount increases year by year, and higher requirement is it is also proposed with the performance of corrosion inhibiter to acidifying.Well of the well temperature more than 120 DEG C, it is acidified inhibition
Agent performance is greatly reduced, although part well can realize the purpose of inhibition by way of the well-flushing cooling before acidifying, such as
Occur abnormal midway termination of pumping or the well without well-flushing condition during tartaric acid, then can not realize.According to onsite application situation,
At present there is problems with domestic conventional high-temperature acidification corrosion inhibitor at high temperature：
(1) one pack system or single dose are extremely difficult to preferable effect under high temperature and high pressure environment, and different types of corrosion inhibiter is carried out
Compounding plays its synergistic action effect, develops performance is more preferable, economical and practical compound acidification corrosion inhibitor to reach high-performance
With multi-functional purpose；
(2) in recent years, although more on acidifying corrosion inhibitor for oil well research, it is applied to the acidification corrosion inhibitor product of high temperature
Kind is less, and performance is not sufficiently stable.Easy close-burning, layering, dissolution dispersity at high temperature be present in part high-temperature acidification corrosion inhibitor
Bad, the shortcomings that being not sufficiently stable, may cause further to injure to stratum.Therefore, the oil for develop high temperature resistant, working well
Well acidizing corrosion inhibiter, it is the urgent need of oil gas field acid stimulation measure, for the corruption for improving acidizing effect, mitigating equipment and pipeline
Erosion, increase overall economic efficiency have great importance.This patent can improve absorption using the synergy between corrosion inhibiter and cover
Cover degree and absorption stability, change adsorption rate, reduce the dosage of corrosion inhibiter, reduce the toxicity of corrosion inhibiter, inhibition efficiency is made
Higher composite corrosion inhibitor, expand the range of needs of corrosion inhibiter and solve the difficulty that one pack system is difficult to overcome.
The content of the invention
It is an object of the invention to provide a kind of property is stable, corrosion inhibition is good, meet the oil field under the conditions of 120~160 DEG C
A kind of pyridine derivate and Mannich base combined high temperature acidification corrosion inhibitor of acidizing treatment requirement.
Therefore, technical solution of the present invention is as follows：
A kind of pyridine derivate and Mannich base combined high temperature acidification corrosion inhibitor, include the dimethylamino of 10~18 parts by weight
Methyl phenylpropyl alcohol triazole Mannich base and the 1,3- dichloride pyridine -2- hydroxy propanes of 10~20 parts by weight, 3~5 parts by weight
Methenamine, the synergist of 5~7 parts by weight, the surfactant of 0.5~1 parts by weight, the dispersant of 2~3 parts by weight, 40~
The formic acid of the solvent of 60 parts by weight, the triethanolamine of 3~5 parts by weight and 5.0~9.0 parts by weight.
Wherein, the structural formula of the dimethylamino methyl phenylpropyl alcohol triazole Mannich base is as shown in following formula I：
Its preparation methods steps are as follows：It is 3 by mol ratio:2:3 phenylpropyl alcohol triazole, benzaldehyde and dimethylamine is added to instead
Answer in bottle, be well mixed；Hydrochloric acid is added dropwise and adjusts mixed solution pH to 4, and is warming up to 90 DEG C of reaction 4h, distillation, obtains crude product；
Gained crude product and absolute ethyl alcohol are pressed 1：4 volumes are added in beaker, are obtained white precipitate product, are staticly settled, shielding layer
Continue to carry out white precipitated product with absolute ethyl alcohol 2~3 washings after solution, filter, finally by gained precipitated product vacuum
5h is dried, it is stand-by.
The structural formula of the 1,3- dichlorides pyridine -2- hydroxy propanes is as shown in Formula Il：
Its preparation methods steps are as follows：In the three-necked flask equipped with reflux condenser, thermometer, electric jacket and agitating device
Middle addition mol ratio is 1:2~2.1 20wt.%HCl and quinoline, the stirring reaction 1h at a temperature of 60 DEG C, in backward reaction solution
The mol ratio of dropwise addition epoxychloropropane and quinoline successively, epoxychloropropane and quinoline is 1:1~1.1, continue to be down to after reacting 4h
Room temperature, obtain crude product；Crude product petroleum ether extraction and petroleum ether solvent and insoluble matter by being evaporated under reduced pressure in removing solution,
Final gained rufous liquid is 1,3- dichloride pyridine -2- hydroxy propanes.
The synergist is the mixture of propilolic alcohol and KI, and the two weight ratio is 3~7:1~2.
The surfactant is sodium n-alkylbenzenesulfonate.
The solvent is the mixed solution of methanol and polypropylene glycol -400 (being abbreviated as PPG-400), the two weight ratio is 2~
5:1~2.
The dispersant is the mixture of OP-10 and paregal O, and the two weight ratio is 1~2:1~1.5；Wherein, it is described
The structural formula of paregal O is：RO-(CH2CH2O)n- H, R=C16~C18, n=9~30, can specifically use O-9, O-10, O-
15th, dispersant is used as after any one in O-20, O-25, O-30, O-35 mixes by a certain percentage with OP-10.
The key of the present invention is by dimethylamino methyl phenylpropyl alcohol triazole Mannich base and 1,3- dichloride pyridine -2- hydroxyls
Propane is compounded, while compounds a certain proportion of synergist, dispersant, solvent and surfactant, after complex treatment
It can make acidification corrosion inhibitor that there is more stable property under 120 DEG C~160 DEG C acidulated conditions.
The dosage of a kind of pyridine derivate and Mannich base combined high temperature acidification corrosion inhibitor in acid fluid system be 2.0~
Sustained release performance can be achieved during 4.0wt.%.
A kind of beneficial effect of pyridine derivate and Mannich base combined high temperature acidification corrosion inhibitor is：
(1) the combined high temperature acidification corrosion inhibitor is in 0~20% (mass fraction, as follows) HCl and mud acid system (12%
HCl and 3%HF, volume fraction) in, N80 steel discs, inhibition speed reaches petroleum industry standard under the conditions of 120~160 DEG C《SY/T
5405-1996》In one-level corrosion inhibitor product index requirement；
(2) the combined high temperature acidification corrosion inhibitor its corrosion inhibition under the conditions of 160 DEG C maintains more than 3 days, or it is longer when
Interior can stablize play its corrosion inhibition, improve the acidizing treatment quality under the conditions of 160 DEG C；
(3) the combined high temperature acidification corrosion inhibitor easily stores transport, and the composite corrosion inhibitor is through in long-time storage and transportation process
Not putrid and deteriorated, the standby composite corrosion inhibitor of centralized system is easy to distribution, and to the acidizing treatment measures to reform of multiple wells, onsite application is all
It is easier, 2.0~4.0wt.% only need to be added in required acid fluid system；
(4) the combined high temperature acidification corrosion inhibitor has preferable compatibility with conventional acidification of oil field system, is easy to and not
Same acid system is compounded, and use range is wide；
(5) the combined high temperature acidification corrosion inhibitor property is stable, and chance naked light is non-ignitable, and working security is high；
(6) the combined high temperature acidification corrosion inhibitor does not possess bio-toxicity, can be biodegradable under natural environment, meets sea
The requirement of foreign oil acidifying；
(7) the combined high temperature acidification corrosion inhibitor preparation method is simple, and raw material easily obtains, suitable for large-scale production.
Embodiment
With reference to specific embodiment, the present invention is described further, but following embodiments absolutely not to the present invention have appoint
What is limited.
Embodiment 1
A kind of pyridine derivate and Mannich base combined high temperature acidification corrosion inhibitor, including 15 parts of diformazan ammonia in parts by weight
Ylmethyl phenylpropyl alcohol triazole Mannich base and the 1,3- dichloride pyridine -2- hydroxy propanes of 10 parts by weight, the black Lip river of 3.0 parts by weight
Tropine, 3.0 parts of propilolic alcohols, 1.0 parts of KIs, 0.5 part of LAS, 1.0 parts of paregal Os, 1.5 parts of OP-10,40 parts of methanol, 15 parts
PPG-400,5.0 parts of triethanolamines and 5.0 parts of formic acid.
Use or store stand-by in use, being puddled after said components are weighed and can uniformly be sent into job site.
Embodiment 2
A kind of pyridine derivate and Mannich base combined high temperature acidification corrosion inhibitor, including 18 parts of diformazan ammonia in parts by weight
Ylmethyl phenylpropyl alcohol triazole Mannich base and the 1,3- dichloride pyridine -2- hydroxy propanes of 12 parts by weight, the black Lip river of 5.0 parts by weight
Tropine, 4.0 parts of propilolic alcohols, 1.0 parts of KIs, 1.0 parts of LAS, 2.0 parts of paregal Os, 1.0 parts of OP-10,31 parts of methanol, 15 parts
PPG-400,5.0 parts of triethanolamines and 5.0 parts of formic acid.
Use or store stand-by in use, being puddled after said components are weighed and can uniformly be sent into job site.
Embodiment 3
A kind of pyridine derivate and Mannich base combined high temperature acidification corrosion inhibitor, including 15 parts of diformazan ammonia in parts by weight
Ylmethyl phenylpropyl alcohol triazole Mannich base and the 1,3- dichloride pyridine -2- hydroxy propanes of 15 parts by weight, the black Lip river of 5.0 parts by weight
Tropine, 3.0 parts of propilolic alcohols, 2.0 parts of KIs, 0.5 part of LAS, 1.5 parts of paregal Os, 1.0 parts of OP-10,31 parts of methanol, 15 parts
PPG-400,5.0 parts of triethanolamines and 5.0 parts of formic acid.
Use or store stand-by in use, being puddled after said components are weighed and can uniformly be sent into job site.
Embodiment 4
A kind of pyridine derivate and Mannich base combined high temperature acidification corrosion inhibitor, including 17 parts of diformazan ammonia in parts by weight
Ylmethyl phenylpropyl alcohol triazole Mannich base and the 1,3- dichloride pyridine -2- hydroxy propanes of 17 parts by weight, the black Lip river of 5.0 parts by weight
Tropine, 3.0 parts of propilolic alcohols, 2.0 parts of KIs, 1.0 parts of LAS, 1.0 parts of paregal Os, 1.0 parts of OP-10,26 parts of methanol, 15 parts
PPG-400,3.0 parts of triethanolamines and 9.0 parts of formic acid.
Use or store stand-by in use, being puddled after said components are weighed and can uniformly be sent into job site.
Embodiment 5
A kind of pyridine derivate and Mannich base combined high temperature acidification corrosion inhibitor, including 10 parts of diformazan ammonia in parts by weight
Ylmethyl phenylpropyl alcohol triazole Mannich base and the 1,3- dichloride pyridine -2- hydroxy propanes of 20 parts by weight, the black Lip river of 3.0 parts by weight
Tropine, 5.0 parts of propilolic alcohols, 2.0 parts of KIs, 0.5 part of LAS, 1.5 parts of paregal Os, 1.0 parts of OP-10,29 parts of methanol, 20 parts
PPG-400,3.0 parts of triethanolamines and 5.0 parts of formic acid.
Use or store stand-by in use, being puddled after said components are weighed and can uniformly be sent into job site.
Except dimethylamino methyl phenylpropyl alcohol triazole Mannich base and 1,3- dichloride pyridine -2- hydroxy propanes, embodiment 1~
Remaining each component in 5 and prepare dimethylamino methyl phenylpropyl alcohol triazole Mannich base and 1,3- dichloride pyridine -2- hydroxyls
The raw material of propane is bought from commercially available prod.
Specifically, the preparation method of dimethylamino methyl phenylpropyl alcohol triazole Mannich base is：It is 3 by mol ratio:2:3 benzene
Third triazole, benzaldehyde and dimethylamine are added in reaction bulb, are well mixed；Hydrochloric acid is added dropwise and adjusts mixed solution pH to 4, and rises
Temperature distillation, collects the cut in addition to reactant and solvent temperature section, obtains crude product to 90 DEG C of reaction 4h；Gained is slightly produced
Product and absolute ethyl alcohol press 1：4 volumes are added in beaker, are obtained white precipitate product, are staticly settled, and are continued after shielding layer solution
2~3 washings are carried out to white precipitated product with absolute ethyl alcohol, are filtered, gained precipitated product is finally dried in vacuo 5h, treated
With.
The preparation method of 1,3- dichloride pyridine -2- hydroxy propanes is：It is 1 that mol ratio is added in reaction bulb:2.1
20wt.%HCl and quinoline, the stirring reaction 1h at a temperature of 60 DEG C, epoxychloropropane and quinoline are added dropwise successively in backward reaction solution,
The mol ratio of epoxychloropropane and quinoline is 1:1.1, continue to be down to room temperature after reacting 4h；Product petroleum ether extraction, separation are quiet
Postpone and take upper strata rufous liquid, and by being evaporated under reduced pressure the insoluble matter and petroleum ether solvent that remove in solution, finally gained is red
Brown liquid is 1,3- dichloride pyridine -2- hydroxy propanes.
Performance test：
A kind of pyridine derivate and Mannich base combined high temperature acidification corrosion inhibitor prepared by above-described embodiment 1~5 is distinguished
Tested from corrosion inhibition, dissolution dispersity energy, core permeability infringement experiment etc..
(1) corrosion inhibition is tested：
Corrosion mitigating effect of the temperature higher than more than 90 DEG C is evaluated, with reference to People's Republic of China's oil and gas industry standard
SY/T 5405-1996《Corrosion inhibiter method for testing performance and evaluation index are used in acidifying》In HTHP Dynamic Corrosion speed survey
The method of determining is evaluated.The sample prepared is poured into high temperature and high pressure kettle, then the test piece handled well is put into kettle, temperature
When reaching assigned temperature, start timing, reaction is taken out test piece after 4 hours and handled, and calculates average corrosion rate.Test result
It is as shown in table 1 below.
Table 1：
From upper table 1 as can be seen that under the conditions of 120 DEG C, in 15wt.% HCl, 20wt.% HCl and 12wt.%
In HCl+3.0wt.%HF, 2% dosage can reach SY/T 5405-1996 one-level performance indications；Under the conditions of 140 DEG C,
In 15wt.%HCl, 20wt.%HCl and 12wt.%HCl+3.0wt.%HF, 3wt.% dosage can reach SY/T 5405-
1996 one-level performance indications；Under the conditions of 160 DEG C, in 15wt.%HCl, 20wt.%HCl and 12wt.%HCl+3.0wt.%HF
In, 4wt.% dosage can reach SY/T 5405-1996 one-level performance indications.It can be seen that the compound acidification corrosion inhibitor 120 being somebody's turn to do
Under the conditions of less than~160 DEG C inhibition speed reach petroleum industry standard SY/T 5405-1996 corrosion inhibiter first class products index will
Ask.
Further choose respectively compound acidification corrosion inhibitor prepared by embodiment 1~3 tested at 160 DEG C of test temperature its
The corrosion rate after 72h is reacted in different proportion acid solution, test result is referring to table 2 below.
Table 2：
From table 2 it can be seen that under the conditions of 160 DEG C, in 15wt.%HCl, 20wt.%HCl, 12wt.%HCl+3wt.%
Though the corrosion rate of steel is increased slightly after 72h but be able to can still reached one specified in SY/T 5405-1996 in HF
Level performance indications.It can be seen that the corrosion inhibiter its corrosion inhibition under the conditions of 160 DEG C maintains more than 3 days, or can in the longer time
It is stable to play its corrosion inhibition, the acidizing treatment quality being effectively improved under the conditions of 160 DEG C.
(2) dissolution dispersity can be tested：
According to SY/T 5405-1996《Corrosion inhibiter method for testing performance and evaluation index are used in acidifying》In corrosion inhibiter dissolving
Dispersed assay method and evaluation index, by the way that the well mixed acid solution bottle containing certain proportion corrosion inhibiter is put into constant temperature
Water-bath in, the situation of change for observing acid solution outward appearance evaluates the dissolution dispersity of corrosion inhibiter.
Test result is as shown in table 3 below.
Table 3：
| Sequence number | Time, h | Dissolve deployment conditions | Index |
| Embodiment one | 36 | Acid solution transparent clear, aneroid/stratified liquid, aneroid/solid phase separation | One-level |
| Embodiment two | 36 | Acid solution transparent clear, aneroid/stratified liquid, aneroid/solid phase separation | One-level |
| Embodiment three | 36 | Acid solution transparent clear, aneroid/stratified liquid, aneroid/solid phase separation | One-level |
| Example IV | 36 | Acid solution transparent clear, aneroid/stratified liquid, aneroid/solid phase separation | One-level |
| Embodiment five | 36 | Acid solution transparent clear, aneroid/stratified liquid, aneroid/solid phase separation | One-level |
Can be seen that the corrosion inhibiter from the test result of upper table 3 has preferable compatibility, after being mixed with conventional acid solution
Occur in 36 hours without the scene such as precipitation, layering.
(3) corrosion inhibiter is damaged to core permeability and tested：
According to SY/T 5405-1996《Corrosion inhibiter method for testing performance and evaluation index are used in acidifying》In corrosion inhibiter rock core
Permeability impairment is tested, and the corrosion inhibiter aqueous solution of 2.5% concentration is squeezed into natural core, squeezed into rock core Flow Meter measurement slow
Lose the permeability of the forward and backward natural core of the agent aqueous solution, the degree that measure corrosion inhibiter damages to core permeability.
Corrosion inhibiter is calculated by formula (1) the loss ratio of core permeability：
In formula：μiThe loss ratio of-core permeability, %；
K0, Ki- corrosion inhibiter the aqueous solution injects forward and backward kerosene and surveys permeability, and 10-3μm2；
I=1,2,3,4,5.
Test result is as shown in table 4 below.Wherein, rock core 1 uses product prepared by corrosion inhibiter embodiment 1, rock in table 4
The heart 2 uses product prepared by corrosion inhibiter embodiment 2, by that analogy.
Table 4：
| Sequence number | K0, 10-3μm2 | Ki, 10-3μm2 | Permeability damage rate, % |
| Rock core 1 | 9.25 | 8.87 | 4.11 |
| Rock core 2 | 8.13 | 7.81 | 3.94 |
| Rock core 3 | 11.43 | 10.82 | 5.34 |
| Rock core 4 | 14.23 | 13.67 | 3.94 |
| Rock core 5 | 10.72 | 10.01 | 6.62 |
As can be seen from Table 4, the permeability damage rate in above-mentioned five kinds of acid fluid systems has preferable below 8%
Reservoir protection performance, disclosure satisfy that in actual production to the needs of reservoir protection.
In addition, the composite corrosion inhibitor is in actual use, with conventional acid system and acidizing additive (such as clay
Stabilizer, ferrous stability, demulsification cleanup agent, precipitating inhibitor etc.) preferable compatibility is respectively provided with, precipitation will not be produced.
It is easy to be compounded with different acid systems, use range is wide.
Claims (8)
1. a kind of pyridine derivate and Mannich base combined high temperature acidification corrosion inhibitor, it is characterised in that including 10~18 parts by weight
Dimethylamino methyl phenylpropyl alcohol triazole Mannich base and 10~20 parts by weight 1,3- dichloride pyridine -2- hydroxy propanes；Its
In,
The structural formula of the dimethylamino methyl phenylpropyl alcohol triazole Mannich base is as shown in following formula I：
The structural formula of the 1,3- dichlorides pyridine -2- hydroxy propanes is as shown in Formula Il：
2. a kind of pyridine derivate according to claim 1 and Mannich base combined high temperature acidification corrosion inhibitor, its feature exist
In, in addition to the methenamine of 3~5 parts by weight, the synergist of 5~7 parts by weight, the surfactant of 0.5~1 parts by weight, 2~
The dispersant of 3 parts by weight, the solvent of 40~60 parts by weight, the first of the triethanolamine of 3~5 parts by weight and 5.0~9.0 parts by weight
Acid.
3. a kind of pyridine derivate according to claim 1 and Mannich base combined high temperature acidification corrosion inhibitor, its feature exist
In the preparation method of the dimethylamino methyl phenylpropyl alcohol triazole Mannich base is：It is 3 by mol ratio:2:3 nitrogen of phenylpropyl alcohol three
Azoles, benzaldehyde and dimethylamine are added in reaction bulb, are well mixed；Hydrochloric acid is added dropwise and adjusts mixed solution pH to 4, and is warming up to 90
DEG C reaction 4h, distillation, obtain crude product；Gained crude product and absolute ethyl alcohol are pressed 1：4 volumes are added in beaker, obtain white
Precipitated product, staticly settle, continue to carry out white precipitated product with absolute ethyl alcohol 2~3 washings after shielding layer solution, take out
Filter, gained precipitated product is finally dried in vacuo 5h, it is stand-by.
4. a kind of pyridine derivate according to claim 1 and Mannich base combined high temperature acidification corrosion inhibitor, its feature exist
In the preparation method of 1, the 3- dichlorides pyridine -2- hydroxy propanes is：It is 1 that mol ratio is added in reaction bulb:2~2.1
20wt.%HCl and quinoline, the stirring reaction 1h at a temperature of 60 DEG C, epoxychloropropane and quinoline are added dropwise successively in backward reaction solution,
The mol ratio of epoxychloropropane and quinoline is 1:1~1.1, continue to be down to room temperature after reacting 4h, obtain crude product；Crude product oil
Ether extracts and by being evaporated under reduced pressure the petroleum ether solvent and insoluble matter that remove in solution, final gained rufous liquid is 1,3-
Dichloride pyridine -2- hydroxy propanes.
5. a kind of pyridine derivate according to claim 2 and Mannich base combined high temperature acidification corrosion inhibitor, its feature exist
In the synergist is the mixture of propilolic alcohol and KI, and the two weight ratio is 3~7:1~2.
6. a kind of pyridine derivate according to claim 2 and Mannich base combined high temperature acidification corrosion inhibitor, its feature exist
In the surfactant is neopelex.
7. a kind of pyridine derivate according to claim 2 and Mannich base combined high temperature acidification corrosion inhibitor, its feature exist
In the solvent is the mixed solution of methanol and polypropylene glycol -400, and the two weight ratio is 2~5:1~2.
8. a kind of pyridine derivate according to claim 2 and Mannich base combined high temperature acidification corrosion inhibitor, its feature exist
In the dispersant is the mixture of OP-10 and paregal O, and the two weight ratio is 1~2:1~1.5.
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| CN109294549A (en) * | 2018-08-30 | 2019-02-01 | 赵晴晴 | A kind of high temperature oil field acidification corrosion inhibitor and preparation method |
| CN113481510A (en) * | 2021-07-05 | 2021-10-08 | 中国特种设备检测研究院 | Corrosion inhibitor suitable for conversion condensate of coal gasification device and use method thereof |
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| CN108192589A (en) * | 2017-12-13 | 2018-06-22 | 中国石油天然气股份有限公司 | A kind of organic base corrosion inhibiter handled for oil well acidation raffinate and preparation method thereof |
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| CN114989798A (en) * | 2022-03-29 | 2022-09-02 | 中国石油天然气股份有限公司西南油气田分公司 | Ultra-high temperature acidizing corrosion inhibitor for Cr-containing oil pipe and preparation method thereof |
| CN115785932A (en) * | 2022-11-09 | 2023-03-14 | 中石化石油工程技术服务有限公司 | Lactic acid acidification corrosion inhibitor and preparation method thereof |
| CN115785932B (en) * | 2022-11-09 | 2023-11-14 | 中石化石油工程技术服务有限公司 | Lactic acid acidification corrosion inhibitor and preparation method thereof |
| CN115820237A (en) * | 2022-12-14 | 2023-03-21 | 泰坦(天津)能源技术有限公司 | Corrosion inhibitor for carbon dioxide flooding and preparation method thereof |
| CN115820237B (en) * | 2022-12-14 | 2024-02-06 | 泰坦(天津)能源技术有限公司 | Corrosion inhibitor for carbon dioxide flooding and preparation method thereof |
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