CN109970914A - A kind of starch base antisludging agent and its preparation method and application - Google Patents
A kind of starch base antisludging agent and its preparation method and application Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
- C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
- C02F5/12—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing nitrogen
- C02F5/125—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing nitrogen combined with inorganic substances
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F251/00—Macromolecular compounds obtained by polymerising monomers on to polysaccharides or derivatives thereof
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/10—Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
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Abstract
The present invention provides a kind of starch base antisludging agent and its preparation method and application.Starch and the first monomer and second comonomer are carried out polymerization reaction in the presence of composite initiator by the preparation method of starch base antisludging agent of the invention；Wherein, composite initiator includes ammonium sulfate and reducing agent, and the first monomer is acrylic acid or acrylamide, and second comonomer is maleic acid.Starch base antisludging agent of the invention has good scale inhibition effect to the oil field water of high temperature, high rigidity, high salinity.
Description
Technical field
The present invention relates to a kind of antisludging agents, and in particular to a kind of starch base antisludging agent and its preparation method and application.
Background technique
With the increase of oil field produced water, oil field is problem inevitable in the production of oil field with water fouling.Fouling pair
Harm in oil field is huge, and dirt is recovering the oil, depositing in gathering system, not only will increase the resistance of fluid flowing, to increase energy
Consumption, and also will cause underdeposit corrosion, it influences normally to produce, furthermore dirt also will cause duct obstruction etc. in water flooding deposition and ask
Topic.Therefore, fouling is just becoming current oil field problem in the urgent need to address.
The factor multiplicity for causing each scaling in oil field mainly includes knot caused by being incompatible as Produced Liquid with reinjected water
Dirt and as make incrustation ion different solubility under stratum with temperature, the pressure difference in earth's surface and caused by fouling.With tower
In wood breathe out, for Ying Maili block, due to breathe out block oil reservoir buries relatively deep, Produced Liquid crosses pump temperature up to 120 DEG C or more, most
High up to 160 DEG C, dive is pumped often because fouling cannot run well, and dirt is mainly based on calcium scale, magne-scale, barium strontium dirt, to give
Oil field production brings high risks.
Currently, most common method of scale inhibition is the generation for inhibiting dirt using chemical scale-inhibitor both at home and abroad.Common scale inhibition
Agent mainly has several classes such as inorganic polyphosphate, organic multicomponent phosphate, homopolymer antisludging agent, copolymer antisludging agent.However, being directed to
The scale problems of oil field system, current antisludging agent are difficult to the features such as taking into account oil field water quality high temperature, high rigidity, high salinity, furthermore
It is poor to the scale inhibition effect of calcium scale, magne-scale, barium strontium dirt etc..
Summary of the invention
The present invention provides a kind of starch base antisludging agent and its preparation method and application, and the starch base antisludging agent is to high temperature, height
Hardness, high salinity oil field water have good scale inhibition effect.
The present invention provides a kind of preparation method of starch base antisludging agent, in the presence of composite initiator, (referred to as by starch
ST) polymerization reaction is carried out with the first monomer and second comonomer；Wherein, composite initiator includes ammonium sulfate and reducing agent, and first is single
Body is acrylic acid (referred to as AA) or acrylamide (referred to as AM), and second comonomer is maleic acid (referred to as MA).
In the present invention, polymerization reaction can be carried out using the conventional method of this field, such as aqueous solution polymerization etc. is
First monomer and second comonomer are dissolved in the polymerization reaction that initiator is added in appropriate solvent and carries out under solution state respectively.This
The polymerization reaction of invention can be such that acrylic acid or acrylamide and maleic acid is grafted on starch, to form ST-AA-MA
Or the three-component grafted polymer of ST-AM-MA.
Specifically, preparation method of the invention can stir under protective atmosphere, compound draw is added into starch solution
Agent solution is sent out, after a period of time, the first monomer solution is added and second comonomer solution carries out polymerization reaction.
Wherein, protective atmosphere can be nitrogen atmosphere；A period of time can be 15-25min；Especially it is possible to spray into
The composite initiator solution, the first monomer solution and second comonomer solution is added in mode, consequently facilitating the uniform mixing of material.
The present invention does not limit used starch raw material strictly, such as can be cornstarch, carboxymethyl starch, paste
Change starch etc..
Further, starch solution can be by being made by starch dissolution in water and through mashing；The water for dissolving starch can
Think 70% or so of total Water.
In the present invention, the mass ratio of ammonium sulfate and reducing agent can be 1:(1-6 in the composite initiator).Especially
It is that the reducing agent can be urea, sulphur urine or sodium sulfite.Composite initiator of the invention can efficiently cause starch with
The polymerization reaction of each monomer.
Further, in polymerization reaction system, the mass content of starch is 9-12%, and the mass content of the first monomer is
12-15%, the mass content of second comonomer are 5-7%.
In addition, the mass content of composite initiator can be 0.4-0.8% in polymerization reaction system.
Further, the reaction temperature of the polymerization reaction is 50-70 DEG C, reaction time 4-6h.
In the present invention, above-mentioned polymerization reaction is aqueous solution polymerization, and reactant too high levels will affect polymerization reaction, thus
Cause residual monomer more；In addition, as long as reaction temperature can cause polymerization, as long as the reaction time can guarantee to have reacted
It is complete.
The present invention also provides a kind of starch base antisludging agents, are made according to any of the above-described preparation method.
Further, the solid content of the starch base antisludging agent is 29-35%；Residual monomer≤0.5；Density >=1.05g/
cm3；Limiting Viscosity is 0.055-0.100dl/g.
Starch base antisludging agent of the invention is especially suitable for high temperature, the scale inhibition of the oil field water of high rigidity, high salinity, additionally
It can be used for the scale inhibition of general industry or domestic water etc..
The present invention also provides a kind of method of scale inhibition, carry out scale inhibition to oil field extracted water using above-mentioned starch base antisludging agent.Its
In, the temperature of the oil field extracted water is, for example, 160 DEG C；Calcium ion content in oil field extracted water is 20000mg/L or more；Oil
The salinity of field recovered water is 200,000 mg/L or more.
Further, the dosage of antisludging agent is 100-300ppm.
Implementation of the invention, at least has the advantage that
1, the present invention using natural reproducible raw starch as raw material, it is abundance, low in cost, it is prepared therefrom
Starch base antisludging agent product has the characteristics that without phosphorus, nontoxic, nuisanceless, energy is degradable, so as to realize in nature
Good circulation.
2, starch base antisludging agent of the invention has good scale inhibition effect to the oil field water of high temperature, high rigidity, high salinity,
It can be used to solve the problems, such as to breathe out, a series of productions of bring due to barium sulfate scale of Ying Maili oil well, meet produced on-site requirement；And
And the application of the starch base antisludging agent does not influence subsequent dehydration and flocculation operation, economic benefit and social benefit are significant, have
Wide application prospect.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with the embodiment of the present invention, to this
Technical solution in inventive embodiments is clearly and completely described, it is clear that described embodiment is that a part of the invention is real
Example is applied, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creation
Property labour under the premise of every other embodiment obtained, shall fall within the protection scope of the present invention.
Embodiment 1
The preparation method of the starch base antisludging agent of the present embodiment, step specifically:
1, it stocks up
It is calculated with producing the antisludging agent of 1000 mass parts, each ingredient stock amount (mass parts) is as follows:
Cornstarch is dissolved in the water of part (the part water is the 70% of total Water) by above-mentioned stock amount, is beaten, system
It is spare at corn starch solution；
Acrylic acid is dissolved in the water of part by above-mentioned stock amount, acrylic acid solution is made, it is spare；
Maleic acid is dissolved in the water of part by above-mentioned stock amount, maleic acid solution is made, it is spare；
Ammonium persulfate and urea are dissolved in the water of part by above-mentioned stock amount, composite initiator solution is made, it is spare；
Wherein, the total amount of each section water is above-mentioned stock amount.
2, polymerization reaction
Under the conditions of stirring and logical nitrogen, above-mentioned composite initiator solution is sprayed into Xiang Shangshu corn starch solution；20 minutes
Afterwards, then above-mentioned acrylic acid solution and maleic acid solution being sprayed into, the polymerization reaction 5h at 70 DEG C obtains starch base antisludging agent,
That is the three-component grafted polymer of ST-AA-MA.
Embodiment 2
The preparation method of the starch base antisludging agent of the present embodiment, step specifically:
1, it stocks up
It is calculated with producing the antisludging agent of 1000 mass parts, each ingredient stock amount (mass parts) is as follows:
Carboxymethyl starch is dissolved in the water of part (the part water is the 70% of total Water) by above-mentioned stock amount, mashing,
Carboxymethyl starch soln is made, it is spare；
Acrylamide is dissolved in the water of part by above-mentioned stock amount, acrylamide solution is made, it is spare；
Maleic acid is dissolved in the water of part by above-mentioned stock amount, maleic acid solution is made, it is spare；
Ammonium persulfate and sulphur urine are dissolved in the water of part by above-mentioned stock amount, composite initiator solution is made, it is spare；
Wherein, the total amount of each section water is above-mentioned stock amount.
2, polymerization reaction
Under the conditions of stirring and logical nitrogen, above-mentioned composite initiator solution is sprayed into Xiang Shangshu carboxymethyl starch soln；20 points
Zhong Hou, then above-mentioned acrylamide solution and maleic acid solution are sprayed into, the polymerization reaction 6h at 50 DEG C obtains starch base scale inhibition
The three-component grafted polymer of agent, i.e. ST-AM-MA.
Embodiment 3
The preparation method of the starch base antisludging agent of the present embodiment, step specifically:
1, it stocks up
It is calculated with producing the antisludging agent of 1000 mass parts, each ingredient stock amount (mass parts) is as follows:
Cornstarch is dissolved in the water of part (the part water is the 70% of total Water) by above-mentioned stock amount, is beaten, system
It is spare at corn starch solution；
Acrylic acid is dissolved in the water of part by above-mentioned stock amount, acrylic acid solution is made, it is spare；
Maleic acid is dissolved in the water of part by above-mentioned stock amount, maleic acid solution is made, it is spare；
Ammonium persulfate and urea are dissolved in the water of part by above-mentioned stock amount, composite initiator solution is made, it is spare；
Wherein, the total amount of each section water is above-mentioned stock amount.
2, polymerization reaction
Under the conditions of stirring and logical nitrogen, above-mentioned composite initiator solution is sprayed into Xiang Shangshu corn starch solution；25 minutes
Afterwards, then above-mentioned acrylic acid solution and maleic acid solution being sprayed into, the polymerization reaction 5h at 60 DEG C obtains starch base antisludging agent,
That is the three-component grafted polymer of ST-AA-MA.
Embodiment 4
The preparation method of the starch base antisludging agent of the present embodiment, step specifically:
1, it stocks up
It is calculated with producing the antisludging agent of 1000 mass parts, each ingredient stock amount (mass parts) is as follows:
Carboxymethyl starch is dissolved in the water of part (the part water is the 70% of total Water) by above-mentioned stock amount, mashing,
Carboxymethyl starch soln is made, it is spare；
Acrylic acid is dissolved in the water of part by above-mentioned stock amount, acrylic acid solution is made, it is spare；
Maleic acid is dissolved in the water of part by above-mentioned stock amount, maleic acid solution is made, it is spare；
Ammonium persulfate and sodium sulfite are dissolved in the water of part by above-mentioned stock amount, composite initiator solution is made, it is standby
With；
Wherein, the total amount of each section water is above-mentioned stock amount.
2, polymerization reaction
Under the conditions of stirring and logical nitrogen, above-mentioned composite initiator solution is sprayed into Xiang Shangshu carboxymethyl starch soln；25 points
Zhong Hou, then above-mentioned acrylic acid solution and maleic acid solution are sprayed into, the polymerization reaction 6h at 55 DEG C obtains starch base scale inhibition
The three-component grafted polymer of agent, i.e. ST-AA-MA.
Embodiment 5
The preparation method of the starch base antisludging agent of the present embodiment, step specifically:
1, it stocks up
It is calculated with producing the antisludging agent of 1000 mass parts, each ingredient stock amount (mass parts) is as follows:
Gelatinized starch is dissolved in the water of part (the part water is the 70% of total Water) by above-mentioned stock amount, is beaten, system
It is spare at gelatinization of starch solution；
Acrylamide is dissolved in the water of part by above-mentioned stock amount, acrylamide solution is made, it is spare；
Maleic acid is dissolved in the water of part by above-mentioned stock amount, maleic acid solution is made, it is spare；
Ammonium persulfate and sulphur urine are dissolved in the water of part by above-mentioned stock amount, composite initiator solution is made, it is spare；
Wherein, the total amount of each section water is above-mentioned stock amount.
2, polymerization reaction
Under the conditions of stirring and logical nitrogen, above-mentioned composite initiator solution is sprayed into Xiang Shangshu gelatinization of starch solution；20 minutes
Afterwards, then above-mentioned acrylamide solution and maleic acid solution are sprayed into, the polymerization reaction 6h at 50 DEG C obtains starch base scale inhibition
The three-component grafted polymer of agent, i.e. ST-AM-MA.
Embodiment 6
The preparation method of the starch base antisludging agent of the present embodiment, step specifically:
1, it stocks up
It is calculated with producing the antisludging agent of 1000 mass parts, each ingredient stock amount (mass parts) is as follows:
Carboxymethyl starch is dissolved in the water of part (the part water is the 70% of total Water) by above-mentioned stock amount, mashing,
Carboxymethyl starch soln is made, it is spare；
Acrylamide is dissolved in the water of part by above-mentioned stock amount, acrylamide solution is made, it is spare；
Maleic acid is dissolved in the water of part by above-mentioned stock amount, maleic acid solution is made, it is spare；
Ammonium persulfate and sulphur urine are dissolved in the water of part by above-mentioned stock amount, composite initiator solution is made, it is spare；
Wherein, the total amount of each section water is above-mentioned stock amount.
2, polymerization reaction
Under the conditions of stirring and logical nitrogen, above-mentioned composite initiator solution is sprayed into Xiang Shangshu carboxymethyl starch soln；15 points
Zhong Hou, then above-mentioned acrylamide solution and maleic acid solution are sprayed into, the polymerization reaction 5h at 65 DEG C obtains starch base scale inhibition
The three-component grafted polymer of agent, i.e. ST-AM-MA.
Embodiment 7
The preparation method of the starch base antisludging agent of the present embodiment, step specifically:
1, it stocks up
It is calculated with producing the antisludging agent of 1000 mass parts, each ingredient stock amount (mass parts) is as follows:
Carboxymethyl starch is dissolved in the water of part (the part water is the 70% of total Water) by above-mentioned stock amount, mashing,
Carboxymethyl starch soln is made, it is spare；
Acrylamide is dissolved in the water of part by above-mentioned stock amount, acrylamide solution is made, it is spare；
Maleic acid is dissolved in the water of part by above-mentioned stock amount, maleic acid solution is made, it is spare；
Ammonium persulfate and sulphur urine are dissolved in the water of part by above-mentioned stock amount, composite initiator solution is made, it is spare；
Wherein, the total amount of each section water is above-mentioned stock amount.
2, polymerization reaction
Under the conditions of stirring and logical nitrogen, above-mentioned composite initiator solution is sprayed into Xiang Shangshu carboxymethyl starch soln；20 points
Zhong Hou, then above-mentioned acrylamide solution and maleic acid solution are sprayed into, the polymerization reaction 6h at 55 DEG C obtains starch base scale inhibition
The three-component grafted polymer of agent, i.e. ST-AM-MA.
Embodiment 8
The preparation method of the starch base antisludging agent of the present embodiment, step specifically:
1, it stocks up
It is calculated with producing the antisludging agent of 1000 mass parts, each ingredient stock amount (mass parts) is as follows:
Cornstarch is dissolved in the water of part (the part water is the 70% of total Water) by above-mentioned stock amount, is beaten, system
It is spare at corn starch solution；
Acrylic acid is dissolved in the water of part by above-mentioned stock amount, acrylic acid solution is made, it is spare；
Maleic acid is dissolved in the water of part by above-mentioned stock amount, maleic acid solution is made, it is spare；
Ammonium persulfate and urea are dissolved in the water of part by above-mentioned stock amount, composite initiator solution is made, it is spare；
Wherein, the total amount of each section water is above-mentioned stock amount.
2, polymerization reaction
Under the conditions of stirring and logical nitrogen, above-mentioned composite initiator solution is sprayed into Xiang Shangshu corn starch solution；25 minutes
Afterwards, then above-mentioned acrylic acid solution and maleic acid solution being sprayed into, the polymerization reaction 5h at 70 DEG C obtains starch base antisludging agent,
That is the three-component grafted polymer of ST-AA-MA.
Embodiment 9
The preparation method of the starch base antisludging agent of the present embodiment, step specifically:
1, it stocks up
It is calculated with producing the antisludging agent of 1000 mass parts, each ingredient stock amount (mass parts) is as follows:
Cornstarch is dissolved in the water of part (the part water is the 70% of total Water) by above-mentioned stock amount, is beaten, system
It is spare at corn starch solution；
Acrylic acid is dissolved in the water of part by above-mentioned stock amount, acrylic acid solution is made, it is spare；
Maleic acid is dissolved in the water of part by above-mentioned stock amount, maleic acid solution is made, it is spare；
Ammonium persulfate and urea are dissolved in the water of part by above-mentioned stock amount, composite initiator solution is made, it is spare；
Wherein, the total amount of each section water is above-mentioned stock amount.
2, polymerization reaction
Under the conditions of stirring and logical nitrogen, above-mentioned composite initiator solution is sprayed into Xiang Shangshu corn starch solution；20 minutes
Afterwards, then above-mentioned acrylic acid solution and maleic acid solution being sprayed into, the polymerization reaction 6h at 70 DEG C obtains starch base antisludging agent,
That is the three-component grafted polymer of ST-AA-MA.
Embodiment 10
The preparation method of the starch base antisludging agent of the present embodiment, step specifically:
1, it stocks up
It is calculated with producing the antisludging agent of 1000 mass parts, each ingredient stock amount (mass parts) is as follows:
Carboxymethyl starch is dissolved in the water of part (the part water is the 70% of total Water) by above-mentioned stock amount, mashing,
Carboxymethyl starch soln is made, it is spare；
Acrylamide is dissolved in the water of part by above-mentioned stock amount, acrylamide solution is made, it is spare；
Maleic acid is dissolved in the water of part by above-mentioned stock amount, maleic acid solution is made, it is spare；
Ammonium persulfate and sulphur urine are dissolved in the water of part by above-mentioned stock amount, composite initiator solution is made, it is spare；
Wherein, the total amount of each section water is above-mentioned stock amount.
2, polymerization reaction
Under the conditions of stirring and logical nitrogen, above-mentioned composite initiator solution is sprayed into Xiang Shangshu carboxymethyl starch soln；20 points
Zhong Hou, then above-mentioned acrylamide solution and maleic acid solution are sprayed into, the polymerization reaction 6h at 60 DEG C obtains starch base scale inhibition
The three-component grafted polymer of agent, i.e. ST-AM-MA.
Reference examples 1
The preparation method of the antisludging agent of this reference examples, step specifically:
1, it stocks up
It is calculated with producing the antisludging agent of 1000 mass parts, each ingredient stock amount (mass parts) is as follows:
Cornstarch is dissolved in the water of part (the part water is the 70% of total Water) by above-mentioned stock amount, is beaten, system
It is spare at corn starch solution；
Acrylic acid is dissolved in the water of part by above-mentioned stock amount, acrylic acid solution is made, it is spare；
Maleic acid is dissolved in the water of part by above-mentioned stock amount, maleic acid solution is made, it is spare；
Ammonium persulfate is dissolved in the water of part by above-mentioned stock amount, initiator solution is made, it is spare；
Wherein, the total amount of each section water is above-mentioned stock amount.
2, polymerization reaction
Under the conditions of stirring and logical nitrogen, above-mentioned initiator solution is sprayed into Xiang Shangshu corn starch solution；After twenty minutes, then
Above-mentioned acrylic acid solution and maleic acid solution are sprayed into, the polymerization reaction 5h at 70 DEG C obtains starch base antisludging agent.
The quality measurements of the starch base antisludging agent of this reference examples are shown in Table 1.
Reference examples 2
The preparation method of the antisludging agent of this reference examples, step specifically:
1, it stocks up
It is calculated with producing the antisludging agent of 1000 mass parts, each ingredient stock amount (mass parts) is as follows:
Cornstarch is dissolved in the water of part (the part water is the 70% of total Water) by above-mentioned stock amount, is beaten, system
It is spare at corn starch solution；
Acrylic acid is dissolved in the water of part by above-mentioned stock amount, acrylic acid solution is made, it is spare；
Ammonium persulfate and urea are dissolved in the water of part by above-mentioned stock amount, composite initiator solution is made, it is spare；
Wherein, the total amount of each section water is above-mentioned stock amount.
2, polymerization reaction
Under the conditions of stirring and logical nitrogen, above-mentioned composite initiator solution is sprayed into Xiang Shangshu corn starch solution；20 minutes
Afterwards, then above-mentioned acrylic acid solution is sprayed into, the polymerization reaction 5h at 70 DEG C obtains starch base antisludging agent.
The quality measurements of the starch base antisludging agent of this reference examples are shown in Table 1.
Reference examples 3
The preparation method of the antisludging agent of this reference examples, step specifically:
1, it stocks up
It is calculated with producing the antisludging agent of 1000 mass parts, each ingredient stock amount (mass parts) is as follows:
Cornstarch is dissolved in the water of part (the part water is the 70% of total Water) by above-mentioned stock amount, is beaten, system
It is spare at corn starch solution；
Maleic acid is dissolved in the water of part by above-mentioned stock amount, maleic acid solution is made, it is spare；
Ammonium persulfate and urea are dissolved in the water of part by above-mentioned stock amount, composite initiator solution is made, it is spare；
Wherein, the total amount of each section water is above-mentioned stock amount.
2, polymerization reaction
Under the conditions of stirring and logical nitrogen, above-mentioned composite initiator solution is sprayed into Xiang Shangshu corn starch solution；20 minutes
Afterwards, then above-mentioned maleic acid solution is sprayed into, the polymerization reaction 5h at 70 DEG C obtains starch base antisludging agent.
Test example
The starch base antisludging agent of embodiment 1-10 preparation is detected, the results showed that the starch of embodiment 1-10 preparation
Base antisludging agent solid content is 29-35%；Residual monomer≤0.5；Density >=1.05g/cm3；Limiting Viscosity is 0.055-
0.100dl/g。
With the oil that temperature is 160 DEG C or so, calcium ion content is 20000mg/L or so, salinity is 200,000 mg/L or so
Field recovered water is as subjects.
Configure 200ppm's for the starch base antisludging agent of the starch base antisludging agent of embodiment 1-10 and reference examples 1-3 respectively
Starch base scale inhibition agent solution；Antisludging test is carried out to above-mentioned oil field extracted water using each starch base scale inhibition agent solution.
Antisludging test the result shows that: the starch base antisludging agent of embodiment 1-10 is obviously excellent to the scale inhibition effect of oil field extracted water
In the starch base antisludging agent of reference examples 1-3.
The mass parameter testing result and antisludging test of each embodiment starch base antisludging agent the results are shown in Table 1.
The mass parameter and antisludging test result of each starch base antisludging agent of table 1
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of preparation method of starch base antisludging agent, which is characterized in that in the presence of composite initiator, starch and first is single
Body and second comonomer carry out polymerization reaction；Wherein, composite initiator includes ammonium sulfate and reducing agent, the first monomer be acrylic acid or
Acrylamide, second comonomer are maleic acid.
2. preparation method according to claim 1, which is characterized in that under stirring and protective atmosphere, into starch solution
Composite initiator solution is added, after a period of time, adds the first monomer solution and second comonomer solution carries out polymerization reaction.
3. preparation method according to claim 1, which is characterized in that ammonium sulfate and reducing agent in the composite initiator
Mass ratio is 1:(1-6).
4. preparation method according to claim 1, which is characterized in that the reducing agent is urea, sulphur urine or sodium sulfite.
5. preparation method according to any one of claims 1 to 4, which is characterized in that in polymerization reaction system, the quality of starch
Content is 9-12%, and the mass content of the first monomer is 12-15%, and the mass content of second comonomer is 5-7%.
6. preparation method according to any one of claims 1 to 4, which is characterized in that in polymerization reaction system, composite initiator
Mass content be 0.4-0.8%.
7. preparation method according to any one of claims 1 to 4, which is characterized in that the reaction temperature of the polymerization reaction is
50-70 DEG C, reaction time 4-6h.
8. a kind of starch base antisludging agent, which is characterized in that be made according to preparation method as claimed in claim 1 to 7.
9. starch base antisludging agent according to claim 8, which is characterized in that its solid content is 29-35%；Residual monomer≤
0.5；Density >=1.05g/cm3；Limiting Viscosity is 0.055-0.100dl/g.
10. a kind of method of scale inhibition, which is characterized in that using starch base antisludging agent described in claim 8 or 9 to oil field extracted water
Carry out scale inhibition.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711463698.0A CN109970914B (en) | 2017-12-28 | 2017-12-28 | Starch-based scale inhibitor and preparation method and application thereof |
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| JPH04285186A (en) * | 1991-03-13 | 1992-10-09 | Kurita Water Ind Ltd | Boiler chemical |
| CN1796425A (en) * | 2004-12-30 | 2006-07-05 | 中国石油化工股份有限公司 | Method for preparing polymer of butene diacid |
| CN106145396A (en) * | 2016-08-09 | 2016-11-23 | 丁玉琴 | A kind of preparation method of Phosphateless environmentally friendly dirt dispersion agent |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH04285186A (en) * | 1991-03-13 | 1992-10-09 | Kurita Water Ind Ltd | Boiler chemical |
| CN1796425A (en) * | 2004-12-30 | 2006-07-05 | 中国石油化工股份有限公司 | Method for preparing polymer of butene diacid |
| CN106145396A (en) * | 2016-08-09 | 2016-11-23 | 丁玉琴 | A kind of preparation method of Phosphateless environmentally friendly dirt dispersion agent |
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| 冯永训: "《油田采出水处理设计手册》", 30 September 2005, 中国石化出版社 * |
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