CN109355663A - A kind of preparation method and applications of corrosion inhibiter for oil field, corrosion inhibiter - Google Patents
A kind of preparation method and applications of corrosion inhibiter for oil field, corrosion inhibiter Download PDFInfo
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- CN109355663A CN109355663A CN201811351762.0A CN201811351762A CN109355663A CN 109355663 A CN109355663 A CN 109355663A CN 201811351762 A CN201811351762 A CN 201811351762A CN 109355663 A CN109355663 A CN 109355663A
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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
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Abstract
The preparation method and applications of the corrosion inhibiter, corrosion inhibiter that the invention discloses a kind of for oil field, the corrosion inhibiter includes the raw material of following mass fraction: 50-100 parts of oleic acid, 20-40 parts of diethylenetriamines, 80-120 parts of ethylene oxide, appropriate catalyst, 100-200 parts and water 600-700 parts of dispersing agent.Corrosion inhibiter in the present invention, is the reaction product by imidazoline and ethylene oxide, it effectively improves the shortcomings that imidazoline not readily dissolves in water, and has good corrosion mitigating effect.Using it as the corrosion inhibiter of host agent preparation, cost is relatively low, and effect is obvious.It is mainly used for oilfield, gathering line, it can also be used to the corrosion inhibiter in sewage treatment and flood pattern.
Description
Technical field
The invention belongs to for the inhibiter technology neck in oil field, oil well, gathering line, sewage treatment and flood pattern
Domain, further to a kind of corrosion inhibiter for oil field.
Background technique
Corrosion inhibiter be by concentration appropriate and in the form of be present in environment (medium) when, material corrosion can be prevented or slowed down
Chemical substance or compound, therefore corrosion inhibiter is referred to as corrosion inhibitor.Its dosage very little (0.1%~1%), but
Significant effect.The method of this protection metal claims corrosion inhibiter to protect.Corrosion inhibiter is used for neutral medium (boiler feed water, circulating cooling
Water), acid medium (hydrochloric acid to descale, the acid dip solution of plating piece derusting before being electroplated) and gas medium (vapour phase inhibitor).
In the prior art, corrosion inhibiter intersolubility is not so good, and corrosion mitigating effect is poor, and high production cost.
Summary of the invention
It in view of the above technical problems, is by miaow the purpose of the present invention is to provide a kind of corrosion inhibiter at low cost, effect is good
The reaction product of oxazoline and ethylene oxide, it effectively improves the shortcomings that imidazoline not readily dissolves in water, and has well
Corrosion mitigating effect.Using it as the corrosion inhibiter of host agent preparation, cost is relatively low, and effect is obvious.It is mainly used for oilfield, gathering line,
It can also be used for the corrosion inhibiter in sewage treatment and flood pattern.
In order to realize above-mentioned technical effect, the present invention is achieved by the following scheme:
A kind of corrosion inhibiter for oil field, the raw material including following mass fraction:
50-100 parts of oleic acid, 20-40 parts of diethylenetriamines, 80-120 parts of ethylene oxide, appropriate catalyst, dispersing agent
100-200 parts and water 600-700 parts.
Further, the raw material including following mass fraction:
74 parts of oleic acid, 28 parts of diethylenetriamines, 102 parts of ethylene oxide, 150 parts of the appropriate dispersing agent of catalyst and water 650
Part.
Further, the dispersing agent is one of alcohols, fatty acid or aliphatic amide type.It is incorporated alcohols, rouge
Fat acids or aliphatic amide type etc., so that being formed has very strong targetedly corrosion inhibiter to recovered water.It is not only to low, high saliferous
The sewage of amount has a significant effect, and to and containing corrosive gas (H2S, CO2, O2) sewage it is also extremely effective.
Further, the alcohols is polyethylene glycol 200 or 400.
Further, the dispersing agent is cationic surfactant.It is incorporated surfactant etc., to be formed to extraction
Water has very strong targetedly corrosion inhibiter.It not only has a significant effect to low, high salinity sewage, but also to and containing corruption
Corrosion gas (H2S、CO2、O2) sewage it is also extremely effective.
A kind of method preparing the corrosion inhibiter for oil field provided by the invention, comprising the following steps:
1) acquisition of viscous brown object: oleic acid and diethylenetriamines are poured into reaction kettle, and suitable water entrainer is added,
Reflux, obtains viscous brown object；
2) preparation of water-soluble viscous brown object: above-mentioned viscous brown object and catalyst are added in pressure reaction still, risen
Ethylene oxide is slowly added dropwise in Wen Hou, up to water-soluble viscous brown object after heat preservation；
3) preparation of corrosion inhibiter: dispersing agent and water are added in above-mentioned water-soluble viscous brown object, after heating stirring to obtain the final product
Corrosion inhibiter.
Further, in the acquisition of the step viscous brown object, the temperature of the reflux is 150 DEG C~190 DEG C.At this
In one temperature range, reflowing result is good, and reaction can obtain most products.
Further, the preparation of the step water solubility viscous brown object specifically: by above-mentioned viscous brown object and catalysis
Agent is added in pressure reaction still, and after being warming up to 100 DEG C~140 DEG C, ethylene oxide is slowly added dropwise, and keeps the temperature 20min-40min, rear to be
Obtain water-soluble viscous brown object；
Further, the preparation of the step corrosion inhibiter specifically: dispersion is added in above-mentioned water-soluble viscous brown object
Agent and water heat up 60 DEG C -100 DEG C, up to corrosion inhibiter after stirring 20min-40min.
The present invention provides a kind of application of corrosion inhibiter for oil field, the application is specially corrosion inhibiter for oil field oil
One of well, gathering line, sewage treatment or flood pattern.
The invention has the benefit that
Corrosion inhibiter of the invention improves the bad problem of corrosion inhibiter intersolubility, improves corrosion mitigating effect, and reduce into
This.
For corrosion inhibiter of the invention than conventional corrosion inhibiter at instinct decline 5% or so, corrosion inhibition rate can reach 90% or more.
The simpler safety of corrosion inhibiter synthesis technology in the present invention, and convenient for operation, cost is relatively low.
Corrosion inhibiter in the present invention, using strong imidazoline quaternary ammonium salt as main component, in supplying alcohol, high-efficient penetrant, table
Face activating agent etc., so that being formed has very strong targetedly corrosion inhibiter to recovered water.It not only has very low, high salinity sewage
Significant effect, and to and containing corrosive gas (H2S, CO2, O2) sewage it is also extremely effective.General adding consistency is
50-100ppm, adding consistency are low.Common corrosion inhibitor formula is relatively simple, and specific aim is not strong.Adding consistency is also relatively high, also not
It is too environmentally friendly.
Specific embodiment
Reach the technical means and efficacy that predetermined purpose is taken for the present invention is further explained, it is right with reference to embodiments
A specific embodiment of the invention, structure feature and its effect, detailed description are as follows.
A kind of corrosion inhibiter for oil field provided by the invention, the raw material including following mass fraction:
50-100 parts of oleic acid, 20-40 parts of diethylenetriamines, 80-120 parts of ethylene oxide, appropriate catalyst, dispersing agent
100-200 parts and water 600-700 parts.
It further include that suitable water entrainer is added in the present invention, the water entrainer refers to that benzene class, main purpose are anti-in esterification
At once, benzene and water stratification, benzene flow back into reaction kettle again, circulation carries out.
In the present embodiment, dispersing agent can be one in alcohols, fatty acid, aliphatic amide type or surfactant
Kind.
The simpler safety of corrosion inhibiter synthesis technology in the present invention, and convenient for operation, cost is relatively low.
The preparation process of corrosion inhibiter in the present invention is as follows:
1) acquisition of viscous brown object: oleic acid and diethylenetriamines are poured into reaction kettle, and suitable water entrainer is added,
Reflux, obtains viscous brown object；
At this point, reflux temperature is 150 DEG C -190 DEG C, water entrainer is toluene, and reflux temperature is high, and reaction is abundant, so that esterification
Reaction can be carried out sufficiently, and then can obtain more viscous brown objects.
2) preparation of water-soluble viscous brown object: above-mentioned viscous brown object and catalyst are added in pressure reaction still, risen
Ethylene oxide is slowly added dropwise in Wen Hou, up to water-soluble viscous brown object after heat preservation；
In this step, reaction temperature is 100-140 DEG C, soaking time 20-40min, by the way that ethylene oxide is added dropwise, so that
Ethylene oxide slowly reacts, and improves the acquisition quality of water-soluble viscous brown object.Specifically, it is slowly added dropwise, is per minute
2-3 drop is added dropwise.
3) preparation of corrosion inhibiter: dispersing agent and water are added in above-mentioned water-soluble viscous brown object, after heating stirring to obtain the final product
Corrosion inhibiter.
Specifically, when being warming up to 60 DEG C -100 DEG C, 20min-40min is stirred.
The corrosion inhibiter given in the present invention, using strong imidazoline quaternary ammonium salt as main component, supplying alcohol, high-efficient penetrant,
Surfactant etc., so that being formed has very strong targetedly corrosion inhibiter to recovered water.It not only has low, high salinity sewage
Significant effect, and to and containing corrosive gas (H2S, CO2, O2) sewage it is also extremely effective.General adding consistency
For 50-100ppm, adding consistency is low.Common corrosion inhibitor formula is relatively simple, and specific aim is not strong.Adding consistency is also relatively high,
It is less environmentally friendly.
The quality index for the corrosion inhibiter that the present embodiment obtains such as table 1:
Table 1:
Embodiment 1
In the present embodiment, a kind of corrosion inhibiter for oil field, the raw material including following mass fraction:
50 parts of oleic acid, 20 parts of diethylenetriamines, 80 parts of ethylene oxide, appropriate catalyst, 100 parts of dispersing agent, water 600
Part.
In the present embodiment corrosion inhibiter the preparation method comprises the following steps:
Firstly, the acquisition of viscous brown object: reaction kettle is added in oleic acid and diethylenetriamines by recipe requirements, addition is suitable
The water entrainer of amount flows back at 150 DEG C, deviates from the generation water of 85% or more theoretical amount, finally obtains viscous brown object.
In the present embodiment, water entrainer is toluene.
Secondly, the preparation of water-soluble viscous brown object: obtained viscous brown object and proper catalyst are added to pressure
In reaction kettle, after being warming up to 100 DEG C, then ethylene oxide is slowly added dropwise, keeps the temperature 20min after adding again, can be obtained a kind of water-soluble
Property viscous brown object.
Finally, the preparation of corrosion inhibiter: above-mentioned steps obtain water-soluble viscous brown object, are added into dispersing agent and water
In, it heats up 60 DEG C and stirs 20min, cooling can obtain oil field high-efficient corrosion inhibitor.
In the present embodiment, dispersing agent uses alcohols, specially ethyl alcohol.
In the present embodiment, obtained corrosion inhibiter is viscous brown shape liquid, and active matter content 60%, sustained release rate is
91%.By these parameters, can learn: the corrosion inhibiter of the present embodiment delays than conventional corrosion inhibiter at instinct decline 5% or so
Erosion rate can reach 90% or more.
Embodiment 2
In the present embodiment, a kind of corrosion inhibiter for oil field, the raw material including following mass fraction:
60 parts of oleic acid, 22 parts of diethylenetriamines, 86 parts of ethylene oxide, appropriate catalyst, 120 parts of dispersing agent, water 620
Part.
In the present embodiment corrosion inhibiter the preparation method comprises the following steps:
Firstly, the acquisition of viscous brown object: reaction kettle is added in oleic acid and diethylenetriamines by recipe requirements, addition is suitable
The water entrainer of amount flows back at 158 DEG C, deviates from the generation water of 85% or more theoretical amount, finally obtains viscous brown object.
In the present embodiment, water entrainer is dimethylbenzene.
Secondly, the preparation of water-soluble viscous brown object: obtained viscous brown object and proper catalyst are added to pressure
In reaction kettle, after being warming up to 106 DEG C, then ethylene oxide is slowly added dropwise, keeps the temperature 25min after adding again, can be obtained a kind of water-soluble
Property viscous brown object.
Finally, the preparation of corrosion inhibiter: above-mentioned steps obtain water-soluble viscous brown object, are added into dispersing agent and water
In, it heats up 68 DEG C and stirs 25min, cooling can obtain oil field high-efficient corrosion inhibitor.
In the present embodiment, dispersing agent uses fatty acid.
In the present embodiment, obtained corrosion inhibiter is rufous viscous liquid, and active matter content 62%, sustained release rate is
92%.By these parameters, can learn: the corrosion inhibiter of the present embodiment delays than conventional corrosion inhibiter at instinct decline 5% or so
Erosion rate can reach 90% or more.
Embodiment 3
In the present embodiment, a kind of corrosion inhibiter for oil field, the raw material including following mass fraction: 74 parts of oleic acid, 28 parts
Diethylenetriamines, 102 parts of ethylene oxide.Appropriate catalyst；
150 parts of dispersing agent, 650 parts of water.
In the present embodiment corrosion inhibiter the preparation method comprises the following steps:
Firstly, the acquisition of viscous brown object: reaction kettle is added in oleic acid and diethylenetriamines by recipe requirements, addition is suitable
The water entrainer of amount flows back at 170 DEG C, deviates from the generation water of 85% or more theoretical amount, finally obtains viscous brown object.
In the present embodiment, water entrainer is toluene.
Secondly, the preparation of water-soluble viscous brown object: obtained viscous brown object and proper catalyst are added to pressure
In reaction kettle, after being warming up to 112 DEG C, then ethylene oxide is slowly added dropwise, keeps the temperature 30min after adding again, can be obtained a kind of water-soluble
Property viscous brown object.
Finally, the preparation of corrosion inhibiter: above-mentioned steps obtain water-soluble viscous brown object 200kg, are added into 150kg points
Powder and 650kg water, heat up 80 DEG C and stir 30min, and cooling can obtain oil field high-efficient corrosion inhibitor.
In the present embodiment, dispersing agent uses aliphatic amide type.
In the present embodiment, obtained corrosion inhibiter is viscous brown shape liquid, and active matter content 70%, sustained release rate is
94%.By these parameters, can learn: the corrosion inhibiter of the present embodiment delays than conventional corrosion inhibiter at instinct decline 5% or so
Erosion rate can reach 90% or more.
Embodiment 4
In the present embodiment, a kind of corrosion inhibiter for oil field, the raw material including following mass fraction:
80 parts of oleic acid, 30 parts of diethylenetriamines, 110 parts of ethylene oxide, appropriate catalyst, 160 parts of dispersing agent, water 660
Part.
In the present embodiment corrosion inhibiter the preparation method comprises the following steps:
Firstly, the acquisition of viscous brown object: reaction kettle is added in oleic acid and diethylenetriamines by recipe requirements, addition is suitable
The water entrainer of amount flows back at 178 DEG C, deviates from the generation water of 85% or more theoretical amount, finally obtains viscous brown object.
In the present embodiment, water entrainer is ethylbenzene.
Secondly, the preparation of water-soluble viscous brown object: obtained viscous brown object and proper catalyst are added to pressure
In reaction kettle, after being warming up to 118 DEG C, then ethylene oxide is slowly added dropwise, keeps the temperature 20min after adding again, can be obtained a kind of water-soluble
Property viscous brown object.
Finally, the preparation of corrosion inhibiter: above-mentioned steps obtain water-soluble viscous brown object, are added into dispersing agent and water,
It heats up 80 DEG C and stirs 34min, cooling can obtain oil field high-efficient corrosion inhibitor.
In the present embodiment, dispersing agent uses surfactant.
In the present embodiment, obtained corrosion inhibiter is viscous brown shape liquid, and active matter content 62%, sustained release rate is
93%.By these parameters, can learn: the corrosion inhibiter of the present embodiment delays than conventional corrosion inhibiter at instinct decline 5% or so
Erosion rate can reach 90% or more.
Embodiment 5
In the present embodiment, a kind of corrosion inhibiter for oil field, the raw material including following mass fraction:
90 parts of oleic acid, 35 parts of diethylenetriamines, 116 parts of ethylene oxide, appropriate catalyst, 180 parts of dispersing agent, water 680
Part.
In the present embodiment corrosion inhibiter the preparation method comprises the following steps:
Firstly, the acquisition of viscous brown object: reaction kettle is added in oleic acid and diethylenetriamines by recipe requirements, addition is suitable
The water entrainer of amount flows back at 185 DEG C, deviates from the generation water of 85% or more theoretical amount, finally obtains viscous brown object.
In the present embodiment, water entrainer is dimethylbenzene.
Secondly, the preparation of water-soluble viscous brown object: obtained viscous brown object and proper catalyst are added to pressure
In reaction kettle, after being warming up to 130 DEG C, then ethylene oxide is slowly added dropwise, keeps the temperature 36min after adding again, can be obtained a kind of water-soluble
Property viscous brown object.
Finally, the preparation of corrosion inhibiter: above-mentioned steps obtain water-soluble viscous brown object, are added into dispersing agent and water
In, it heats up 88 DEG C and stirs 36min, cooling can obtain oil field high-efficient corrosion inhibitor.
In the present embodiment, it is specially polyethylene glycol 200 that dispersing agent, which uses alcohols,.
In the present embodiment, obtained corrosion inhibiter is viscous brown shape liquid, and active matter content 60%, sustained release rate is
91%.By these parameters, can learn: the corrosion inhibiter of the present embodiment delays than conventional corrosion inhibiter at instinct decline 5% or so
Erosion rate can reach 90% or more.
Embodiment 6
In the present embodiment, a kind of corrosion inhibiter for oil field, the raw material including following mass fraction:
100 parts of oleic acid, 40 parts of diethylenetriamines, 120 parts of ethylene oxide, appropriate catalyst, 200 parts of dispersing agent, water 700
Part.
In the present embodiment corrosion inhibiter the preparation method comprises the following steps:
Firstly, the acquisition of viscous brown object: reaction kettle is added in oleic acid and diethylenetriamines by recipe requirements, addition is suitable
The water entrainer of amount flows back at 190 DEG C, deviates from the generation water of 85% or more theoretical amount, finally obtains viscous brown object.
In the present embodiment, water entrainer is toluene.
Secondly, the preparation of water-soluble viscous brown object: obtained viscous brown object and proper catalyst are added to pressure
In reaction kettle, after being warming up to 140 DEG C, then ethylene oxide is slowly added dropwise, keeps the temperature 40min after adding again, can be obtained a kind of water-soluble
Property viscous brown object.
Finally, the preparation of corrosion inhibiter: above-mentioned steps obtain water-soluble viscous brown object, are added into dispersing agent and water
In, it heats up 100 DEG C and stirs 40min, cooling can obtain oil field high-efficient corrosion inhibitor.
In the present embodiment, dispersing agent uses alcohols, specially polyethylene glycol 400.
In the present embodiment, obtained corrosion inhibiter is viscous brown shape liquid, and active matter content 60%, sustained release rate is
91%.By these parameters, can learn: the corrosion inhibiter of the present embodiment delays than conventional corrosion inhibiter at instinct decline 5% or so
Erosion rate can reach 90% or more.
High-efficient corrosion inhibitor prepared by the present invention just has following advantage:
1, the simpler safety of synthesis technology of the invention, and convenient for operation, cost is relatively low.
2, corrosion inhibiter of the invention and strong imidazoline quaternary ammonium salt are main component, in supplying alcohol, high-efficient penetrant, table
Face activating agent etc., so that being formed has very strong targetedly corrosion inhibiter to recovered water.
3, it not only has a significant effect to low, high salinity sewage, and to and containing corrosive gas (H2S,
CO2, O2) sewage it is also extremely effective.General adding consistency is 50-100ppm, and adding consistency is low.Common corrosion inhibitor formula compares
Single, specific aim is not strong.Adding consistency is also relatively high, also less environmentally friendly.
Application examples 1
Changqing oilfields are due to mined bed diversity, so that the sewage compatibility of oilfield sewage is poor, oilfield sewage is therefore
Salinity with higher simultaneously contains corrosive gas (H2S, CO2, O2) and microorganism (SRB, TGB), corrosion with higher
Property, and easy fouling.Easily cause the destructions such as the corrosion and scaling of gathering line, water treatment facilities, oil-water well and downhole tool existing
As seriously affecting the normal operation of oil field development system, can also cause fire, cause environmental pollution.
2, the common corrosion inhibition method in oil field and type
During inhibiting and mitigating disposing polluted water in oil, to equipment and pipeline corrosion, fouling, extends set to greatest extent
The service life of standby, pipeline and corresponding tool, length need the dedicated corrosion inhibiter of water process, pre-process to sewage.Metal
The anti-corrosion fouling measure of equipment generally uses three types to carry out prevention processing: first is that being reached by the addition of chemical corrosion inhibiter
Mitigate caustic solution；Second is that metal body and corrosive medium are separated, such as various interior outer linings, painting anticorrosion equipment pipeline, to reach
To the method for mitigating corrosion and fouling；Third is that such as special nickel alloy stainless steel, modified PVC is moulded using corrosion resistant material is resisted
Material etc..
Common corrosion inhibiter is exactly to enable corrosion inhibiter in equipment by the way that corrosion inhibiter is added dropwise during disposing polluted water in oil
Or pipeline surface forms one layer of plated film, to achieve the purpose that inhibition.Common corrosion inhibiter has: oxidized form inhibitor agent, precipitating
The three types such as type inhibitor agent, adsorption corrosion inhibitor.
1), oxidized form inhibition mechanism: making metal surface generate one layer of densification and the oxidation film with the firm connection of well number surface,
Or the salt of indissoluble is generated with metal ion, it prevents metal ion from entering solution, inhibits corrosion.As chromate (NaCrO2,
K2Cr2O7), nitrite (NaNO2) etc..
2), sedimentation type corrosion inhibiter mechanism: certain component reactions in corrosion inhibiter and corrosive environment generate fine and close precipitating
Film, or new polymer is generated, it is covered on metallic surface, the resistivity of this film is big, it is suppressed that corrosion of metal scale inhibition.
3), adsorption corrosion inhibitor mechanism: inhibitor molecular all polarized group and non-polar group are added in corrosive medium
Polar group absorption on the metal surface, non-polar group is then outwardly directed arrangement, forms hydrophobic film, makes metal and corrosion Jie
Matter separates, to achieve the purpose that inhibition.Such as alkylamine (RNH2), alkyl pyridinium chloride, imidazolidine derivatives.
3, the performance characteristics and technical indicator of corrosion inhibiter of the present invention
1), the performance characteristics of corrosion inhibiter of the present invention
My company technique personnel are evaluated by the sewage to the multiple Combined Treatment stations of Changqing oilfields and water-injection station
Analysis.Targetedly find out oil field joint central treating station, the internal cause of corrosion in water.Such as: pH value, saliferous, gas containing corrosivity
Body, bacterium etc. measure the meltage of each gas, analyze ion composition, the corrosion product of corrosive medium, and scale-forming ion water type is matched
5 property and dirty type etc..
2 oil field reinjection water water quality fertilizer index of table
Corrosion inhibiter in the present invention after use, can reach oil field reinjection water water quality fertilizer index in table 2.
Carry out Lab-evaluation: we are referring to oil field reinjection water matter corresponding index, the corrosion inhibiter of choosing corrosion inhibition rate high indoors
And its dosage, then apply at the scene.Lab-evaluation generally uses hanging test method.Corrosion monitoring point is set up, lacing film monitors at any time
Corrosion rate, to adjust, improve corrosion inhibiter kind, dosage and dosing method.In time corresponding formula XL-HS inhibition
Agent is sent to authoritative detection department and carries out detection evaluation, and analysis indices are optimizing combination, to reach optimum efficiency.
With the compatibility of other sewage-treating agents: although XL-HS corrosion inhibiter shows in the data of every corrosion-mitigation scale-inhibition
Through very excellent, but be also contemplated that and other auxiliary agents compatibility, (such as demulsifier, fungicide, oxygen scavenger) whether react and
Offset respective effect.By carrying out compatibility examination with more than ten a producer's formula auxiliaries (such as demulsifier, fungicide, flocculant)
It tests, there is good intersolubility and very strong compatibility, the effect of corrosion-mitigation scale-inhibition is consistent with test data.
2), technical indicator (table 3)
Table 3:
The corrosion inhibiter prepared in embodiment 1-6 in the present invention can reach the requirement of technical indicator in table 3, meanwhile, it incite somebody to action this
The corrosion inhibiter obtained in inventive embodiments 1-6 is respectively used in oilfield, gathering line, sewage treatment or flood pattern, changes
It has been apt to the bad problem of existing corrosion inhibiter intersolubility, has improved corrosion mitigating effect, and reduce costs.Meanwhile in the present embodiment
Acquisition corrosion inhibiter, can be used cooperatively with other auxiliary agents (such as demulsifier, fungicide, flocculant), be tested by compatibility
It proves, has good intersolubility and very strong compatibility, the effect of corrosion-mitigation scale-inhibition is consistent with test data.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
Specific implementation of the invention is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs, exist
Under the premise of not departing from present inventive concept, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to of the invention
Protection scope.
Claims (9)
1. a kind of corrosion inhibiter for oil field, which is characterized in that the raw material including following mass fraction:
50-100 parts of oleic acid, 20-40 parts of diethylenetriamines, 80-120 parts of ethylene oxide, appropriate catalyst, dispersing agent 100-
200 parts and water 600-700 parts.
2. a kind of corrosion inhibiter for oil field according to claim 1, which is characterized in that the original including following mass fraction
Material:
74 parts of oleic acid, 28 parts of diethylenetriamines, 102 parts of ethylene oxide, 150 parts and 650 parts of water of the appropriate dispersing agent of catalyst.
3. a kind of corrosion inhibiter for oil field according to claim 1, which is characterized in that the dispersing agent is alcohols, rouge
One of fat acids or aliphatic amide type.
4. a kind of corrosion inhibiter for oil field according to claim 3, which is characterized in that the alcohols is polyethylene glycol
200 or 400.
5. a kind of corrosion inhibiter for oil field according to claim 1, which is characterized in that the dispersing agent is cation form
Face activating agent.
6. a kind of method for preparing the corrosion inhibiter for oil field as described in one of claim 1-5, which is characterized in that including with
Lower step:
The acquisition of viscous brown object: oleic acid and diethylenetriamines are poured into reaction kettle, and suitable water entrainer is added, reflux,
Obtain viscous brown object；
The preparation of water-soluble viscous brown object: above-mentioned viscous brown object and catalyst are added in pressure reaction still, after heating, are delayed
It is slow that ethylene oxide is added dropwise, up to water-soluble viscous brown object after heat preservation；
The preparation of corrosion inhibiter: dispersing agent and water are added in above-mentioned water-soluble viscous brown object, up to corrosion inhibiter after heating stirring.
7. a kind of method of corrosion inhibiter of preparation as claimed in claim 6 for oil field, which is characterized in that the step brown
In the acquisition of dope, the temperature of the reflux is 150 DEG C~190 DEG C.
8. a kind of method of corrosion inhibiter of preparation as claimed in claim 6 for oil field, which is characterized in that the step is water-soluble
Property viscous brown object preparation specifically: above-mentioned viscous brown object and catalyst are added in pressure reaction still, are warming up to 100 DEG C
After~140 DEG C, ethylene oxide is slowly added dropwise, keeps the temperature 20min-40min, it is rear up to water-soluble viscous brown object；
A kind of method as claimed in claim 6 preparing the corrosion inhibiter for oil field, which is characterized in that the step corrosion inhibiter
Preparation specifically: dispersing agent and water is added in above-mentioned water-soluble viscous brown object, heats up 60 DEG C -100 DEG C, stirs 20min-
Up to corrosion inhibiter after 40min.
9. a kind of application of the corrosion inhibiter for oil field as described in one of claim 1-5, which is characterized in that the application tool
Body is corrosion inhibiter for one of oilfield, gathering line, sewage treatment or flood pattern.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109678800A (en) * | 2019-02-21 | 2019-04-26 | 中国科学院理化技术研究所 | Benzyl imidazoline cationic compound, corrosion inhibiter and preparation method and application |
| CN110250194A (en) * | 2019-06-27 | 2019-09-20 | 胜利油田盛嘉化工有限责任公司 | A kind of oil field composite sterilizer corrosion inhibiter and preparation method thereof |
| CN110424017A (en) * | 2019-08-27 | 2019-11-08 | 山东益丰生化环保股份有限公司 | A kind of molten corrosion inhibiter of oil and preparation method thereof |
-
2018
- 2018-11-14 CN CN201811351762.0A patent/CN109355663A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109678800A (en) * | 2019-02-21 | 2019-04-26 | 中国科学院理化技术研究所 | Benzyl imidazoline cationic compound, corrosion inhibiter and preparation method and application |
| CN110250194A (en) * | 2019-06-27 | 2019-09-20 | 胜利油田盛嘉化工有限责任公司 | A kind of oil field composite sterilizer corrosion inhibiter and preparation method thereof |
| CN110424017A (en) * | 2019-08-27 | 2019-11-08 | 山东益丰生化环保股份有限公司 | A kind of molten corrosion inhibiter of oil and preparation method thereof |
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