CN110527501A - Salt tolerant greasy filth profile control agent and preparation method thereof - Google Patents
Salt tolerant greasy filth profile control agent and preparation method thereof Download PDFInfo
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- CN110527501A CN110527501A CN201810560728.8A CN201810560728A CN110527501A CN 110527501 A CN110527501 A CN 110527501A CN 201810560728 A CN201810560728 A CN 201810560728A CN 110527501 A CN110527501 A CN 110527501A
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/52—Amides or imides
- C08F220/54—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide
- C08F220/58—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide containing oxygen in addition to the carbonamido oxygen, e.g. N-methylolacrylamide, N-(meth)acryloylmorpholine
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- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
- C09K8/504—Compositions based on water or polar solvents
- C09K8/506—Compositions based on water or polar solvents containing organic compounds
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Abstract
The present invention provides a kind of salt tolerant greasy filth profile control agent and preparation method, the salt tolerant greasy filth profile control agent includes following components: the water contained oil sludge of 100 parts by weight and the polymer of 0.45-0.81 parts by weight；Wherein, the polymer is the copolymer of N- butoxy methyl acrylamide, sodium acrylate and methyl methacrylate.The viscosity of salt tolerant greasy filth profile control agent provided by the invention is higher, stability is preferable, can be applicable in the well of higher salt water salinity.
Description
Technical field
The present invention relates to oil-gas mining technical field, in particular to a kind of salt tolerant greasy filth profile control agent and preparation method thereof.
Background technique
Water contained oil sludge is the oily solid sludge generated during oil extraction, collection are defeated, as most oilfields enter
Middle and later periods mining phase, the moisture content produced in oil is higher and higher, and water contained oil sludge in gathering system is caused largely to hoard.State at present
It is inside and outside to have investigated the technology that profile control agent is prepared using water contained oil sludge, not only solve the problems, such as oil-sludge treatment, but also saved profile control
Cost.
The relevant technologies provide a kind of greasy filth profile control agent, including greasy filth and HPAM- phenolic aldehyde gel rubber system.Wherein, HPAM-
Phenolic aldehyde gel rubber system can increase the toughness of greasy filth after being added in greasy filth, make profile control agent adjustment water filling stratum injectivity profile.
In the implementation of the present invention, the inventors discovered that in the prior art the prior art has at least the following problems:
When the greasy filth profile control agent that the relevant technologies provide is in the well for being added to higher salt water salinity, HPAM- phenolic aldehyde
Salt degradation and metal ion degradation can occur for gel rubber system, and decline the stability of greasy filth profile control agent, and toughness reduces.
Summary of the invention
In view of this, the present invention provides a kind of salt tolerant greasy filth profile control agent and preparation method thereof, salt tolerant greasy filth profile control agent it is viscous
Degree is higher, stability is preferable, can be applicable in the well of higher salt water salinity.
Specifically, including technical solution below:
One aspect of the present invention provides a kind of salt tolerant greasy filth profile control agent, and the salt tolerant greasy filth profile control agent includes following components:
The water contained oil sludge of 100 parts by weight and the polymer of 0.45-0.81 parts by weight；
Wherein, the polymer is the copolymerization of N- butoxy methyl acrylamide, sodium acrylate and methyl methacrylate
Object.
Selectively, N- butoxy methyl acrylamide in the copolymer, sodium acrylate and methyl methacrylate
Mass ratio is (0.3-0.5): (0.1-0.21): (0.05-0.1).
Selectively, the salt tolerant greasy filth profile control agent further include 0.05-0.1 parts by weight disodium ethylene diamine tetraacetate and
The N of 0.04-0.08 parts by weight, N '-methylene-bisacrylamide.
Selectively, the moisture content of the water contained oil sludge is 80%-90%.
Another aspect of the present invention additionally provides a kind of preparation method of salt tolerant greasy filth profile control agent described in first aspect, described
Method includes:
The greasy filth of 100 parts by weight is added in reaction vessels, is stirred evenly；
The disodium ethylene diamine tetraacetate of 0.05-0.1 parts by weight is added into the reaction vessels, increases the temperature of reaction vessels
Degree, stirs evenly；
After disodium ethylene diamine tetraacetate is all dissolved in greasy filth, stop stirring and being cooled to the reaction vessels often
Temperature；
N- butoxy methyl acrylamide, sodium acrylate, methyl methacrylate, N are added into the reaction vessels,
N '-methylene-bisacrylamide and initiator, stir evenly, and keep constant temperature preset duration.
Selectively, described that N- butoxy methyl acrylamide, sodium acrylate, methyl-prop are added into the reaction vessels
E pioic acid methyl ester, N, N '-methylene-bisacrylamide and initiator, stir evenly, and keep constant temperature preset duration, comprising:
The acrylic acid of 0.1-0.2 parts by weight is added into the reaction vessels, stirs evenly；
The sodium hydroxide of 0.04-0.08 parts by weight is added into the reaction vessels, stirs evenly；
The methyl methacrylate and 0.05-0.2 parts by weight of 0.05-0.1 parts by weight are added into the reaction vessels
Ethyl alcohol stirs evenly；
The N of 0.04-0.08 parts by weight is added into the reaction vessels, N '-methylene-bisacrylamide stirs evenly；
The initiator of 0.02-0.3 parts by weight is added into the reaction vessels, stirs evenly；
The reaction vessels are put into thermostat water bath, preset duration is continued.
Selectively, the temperature of the thermostat water bath is 55 DEG C -60 DEG C, preset duration 4-5h.
Selectively, the initiator includes the ammonium persulfate of 0.01-0.15 parts by weight and the mistake of 0.01-0.15 parts by weight
Aoxidize two carbonic acid, two cyclohexyl ester.
Technical solution provided in an embodiment of the present invention the utility model has the advantages that
The copolymer of N- butoxy methyl acrylamide, sodium acrylate and methyl methacrylate is network polymers, net
The stability of shaped polymer is preferable, is not susceptible to salt degradation and metal ion degradation and water contained oil sludge mixes, it is possible to increase
The viscosity of water contained oil sludge.Meanwhile the amino group on N- butoxy methyl acrylamide strand can be with greasy filth microparticle surfaces
Hydroxyl group combines and forms hydrogen bond, a large amount of hydrogen bond make polymer it is more stable be adsorbed on greasy filth microparticle surfaces, and then make
Greasy filth particles flocculate generates bigger particle, is conducive to profile control agent and generates plugging action in the earth formation.Therefore, provided by the invention
The viscosity of salt tolerant greasy filth profile control agent is higher, stability is preferable, can be applicable in the well of higher salt water salinity.
Specific embodiment
Unless otherwise defined, all technical terms used in the embodiment of the present invention all have usual with those skilled in the art
The meaning of understanding is identical.Before embodiment of the present invention is described further in detail, to one in the embodiment of the present invention
A little terms are made explanations explanation.
Water contained oil sludge described in the embodiment of the present invention is oil extraction, storage, collects at defeated, processing and crude oil Produced Liquid
The sludge generated during reason, contains certain ingredients in crude oil or crude oil.
Profile control agent described in the embodiment of the present invention refers to the substance that can adjust water filling stratum injectivity profile.Inject oil reservoir
Water, it is most of to be absorbed by high permeability zone, cause injection profile very uneven.In order in playing, the effect of less permeable layer, improve
The sweep efficiency for injecting water, profile control agent can be added into water injection well to adjust the injection profile of water injection well.
To keep technical solution of the present invention and advantage clearer, embodiment of the present invention will be made below further detailed
Thin description.
One aspect of the present invention provides a kind of salt tolerant greasy filth profile control agent, which includes following components: 100
The water contained oil sludge of parts by weight and the polymer of 0.45-0.81 parts by weight；Wherein, polymer be N- butoxy methyl acrylamide,
The copolymer of sodium acrylate and methyl methacrylate.
The working principle of salt tolerant greasy filth profile control agent provided by the invention are as follows:
The copolymer of N- butoxy methyl acrylamide, sodium acrylate and methyl methacrylate is network polymers, net
The stability of shaped polymer is preferable, is not susceptible to salt degradation and metal ion degradation and water contained oil sludge mixes, it is possible to increase
The viscosity of water contained oil sludge.Meanwhile the amino group on N- butoxy methyl acrylamide strand can be with greasy filth microparticle surfaces
Hydroxyl group combines and forms hydrogen bond, a large amount of hydrogen bond make polymer it is more stable be adsorbed on greasy filth microparticle surfaces, and then make
Greasy filth particles flocculate generates bigger particle, is conducive to profile control agent and generates plugging action in the earth formation.Therefore, the salt tolerant greasy filth tune
Cut open agent stability preferably, viscosity it is higher, can reach preferable profile control effect in well.
In above-mentioned salt tolerant greasy filth profile control agent, N- butoxy methyl acrylamide, sodium acrylate in the copolymer
Mass ratio with methyl methacrylate is (0.3-0.5): (0.1-0.21): (0.05-0.1).
It include 0.3- in copolymer in salt tolerant greasy filth profile control agent such as when including the polymer of 0.45-0.81 parts by weight
The first of the N- butoxy methyl acrylamide of 0.5 parts by weight, the sodium acrylate of 0.1-0.21 parts by weight and 0.05-0.1 parts by weight
Base methyl acrylate.
Wherein, N- butoxy methyl acrylamide belongs to water-soluble monomer, and the amide group on strand can change
Kind profile modification system absorbs the ability of salt water.The ester group of methyl methacrylate can have an effect with the wax in greasy filth, prevent oil
Wax crystallization in mud forms the wax of bulk.
In above-mentioned salt tolerant greasy filth profile control agent, which further includes the ethylenediamine of 0.05-0.1 parts by weight
Tetraacethyl disodium and 0.04-0.08 parts by weight N, N '-methylene-bisacrylamide.
Disodium ethylene diamine tetraacetate is as the Ca in complexing agent, with water flooding2+And Mg2+Complexing occurs, to reduce
Ca in water flooding2+And Mg2+The protective effect to salt tolerant greasy filth profile control agent is played in influence to salt tolerant greasy filth profile control agent.
In above-mentioned copolymer, three kinds of N- butoxy methyl acrylamide, sodium acrylate and methyl methacrylate lists
Body forms chain molecule, and two chain molecules are crosslinked by N, N '-methylene-bisacrylamide as crosslinking agent, two amide groups
Together, multiple chain molecules are cross-linked to form network molecule.
In above-mentioned salt tolerant greasy filth profile control agent, the moisture content of the water contained oil sludge is 80%-90%.
When the water content of greasy filth is higher, the toughness of greasy filth can be reduced, after being injected into well, the effect of profile control agent
It is bad；When the water content of greasy filth is lower, during preparing profile control agent, solvent dissolution is insufficient.Through overtesting, greasy filth
When moisture content is 80%-85%, effect is best.
Another aspect of the present invention additionally provides a kind of preparation method of salt tolerant greasy filth profile control agent described in first aspect, the system
Preparation Method includes:
The greasy filth of 100 parts by weight is added in reaction vessels by step 1, is stirred evenly.
Mixing speed can be 100-150r/min in the step.
Step 2, the disodium ethylene diamine tetraacetate that 0.05-0.1 parts by weight are added into reaction vessels, increase reaction vessels
Temperature stirs evenly.
The temperature of reaction vessels can be 80 DEG C in the step, and mixing speed can be 100-150r/min.
Step 3, after disodium ethylene diamine tetraacetate is all dissolved in greasy filth, stop stir simultaneously reaction vessels are cooled to
Room temperature.
In the step, reaction vessels can Temperature fall, prevented also from cooling down in cold water.
N- butoxy methyl acrylamide, sodium acrylate, methyl methacrylate, N are added into reaction vessels for step 4,
N '-methylene-bisacrylamide and initiator, stir evenly, and keep constant temperature preset duration.
In the preparation method of above-mentioned salt tolerant greasy filth profile control agent, N- butoxy is added into reaction vessels in step 4
Methacrylamide, sodium acrylate, methyl methacrylate, N, N '-methylene-bisacrylamide and initiator, stir evenly,
And keep constant temperature preset duration, it may include following sub-step:
Step 401, the acrylic acid that 0.1-0.2 parts by weight are added into reaction vessels, stir evenly.
In this step, mixing speed can be 150-200r/min.
Step 402, the sodium hydroxide that 0.04-0.08 parts by weight are added into reaction vessels, stir evenly.
In this step, mixing speed can be 150-200r/min.
The sodium hydroxide and acrylic acid of addition, which react, generates sodium acrylate.The acrylic acid being generally added is relative to hydrogen-oxygen
Change sodium be it is excessive, found through overtesting, there are certain relationships for the water absorption rate of the degree of neutralization of acrylic acid and profile control agent.In table 1
It is the water absorption rate and absorption salt ratio of the corresponding profile control agent of the different degree of neutralization of acrylic acid.
The water absorption rate and absorption salt ratio of the corresponding profile control agent of different degree of neutralization of 1 acrylic acid of table
| Acrylic acid degree of neutralization, % | Water absorption rate, gg-1 | Absorption salt ratio, gg-1 |
| 60 | 250 | 31 |
| 70 | 400 | 42 |
| 75 | 500 | 46 |
| 80 | 597 | 53 |
| 85 | 530 | 43 |
| 90 | 470 | 36 |
As can be seen from Table 1, when the degree of neutralization of acrylic acid is 80%, the water absorption rate of the profile control agent ultimately produced reaches
Maximum, effect are best.
Step 403, the N- butoxy methyl acrylamide that 0.3-0.5 parts by weight are added into reaction vessels.
In this step, mixing speed can be 300-400r/min.
Step 404, the methyl methacrylate and 0.05-0.2 weight that 0.05-0.1 parts by weight are added into reaction vessels
The ethyl alcohol of part, stirs evenly.
In this step, the methyl methacrylate being added into reaction vessels is slightly soluble in water.In order to promote metering system
The dissolution of sour methyl esters is also added a certain amount of ethyl alcohol, makes methacrylic acid when methyl methacrylate being added into reaction vessels
Methyl esters is dissolved in the solvent of second alcohol and water formation.The additional amount of ethyl alcohol is completely dissolved methyl methacrylate just.Wherein, it stirs
Mixing speed can be 350r/min.
Step 405, the N that 0.04-0.08 parts by weight are added into reaction vessels, N '-methylene-bisacrylamide, stirring are equal
It is even.
In this step, mixing speed can be 300-400r/min.
Step 406, the initiator that 0.02-0.3 parts by weight are added into reaction vessels, stir evenly.
Wherein, initiator may include the ammonium persulfate of 0.01-0.15 parts by weight and the bisulfite of 0.01-0.15 parts by weight
Sodium.
Step 407 is put into reaction vessels in thermostat water bath, and preset duration is continued.
In this step, the temperature of thermostat water bath can be 55 DEG C -60 DEG C, preset duration 4-5h.
Chemical reagent used in the embodiment of the present invention:
Disodium ethylene diamine tetraacetate, chemistry is pure, and producer is Jinan Hong Xin Chemical Co., Ltd.；
Acrylic acid, chemistry is pure, and producer is Jinan Hong Xin Chemical Co., Ltd.；
Sodium hydroxide, chemistry is pure, and producer is Jinan Hong Xin Chemical Co., Ltd.；
N- butoxy methyl acrylamide, chemistry is pure, and producer is Guangzhou San Wang chemical materials Co., Ltd；
Methyl methacrylate, chemistry is pure, and producer is Jinan Lu Li Chemical Co., Ltd.；
Ethyl alcohol, chemistry is pure, and producer is Jinan Hong Xin Chemical Co., Ltd.；
N, N '-methylene-bisacrylamide, chemistry is pure, and producer is Jinan Hong Xin Chemical Co., Ltd.；
Ammonium persulfate, chemistry is pure, and producer is Jinan Hong Xin Chemical Co., Ltd.；
Dicyclohexyl peroxydicarbonate, chemistry is pure, and producer is Jinan Hong Xin Chemical Co., Ltd..
Instrument used in the embodiment of the present invention:
Brookfield viscosimeter；
Thermostat water bath；
Reaction vessels.
Embodiment 1
The present embodiment provides a kind of preparation methods of salt tolerant greasy filth profile control agent.
The salt tolerant greasy filth profile control agent to be prepared of the present embodiment includes following component: the moisture content of 100 parts by weight is 80%
Water contained oil sludge, the disodium ethylene diamine tetraacetate of 0.05 parts by weight and the polymer of 0.49 parts by weight, wherein polymer be N- fourth
Oxygroup Methacrylamide, sodium acrylate, methyl methacrylate and N, the copolymer of N '-methylene-bisacrylamide, copolymerization
It include the methyl of the N- butoxy methyl acrylamide of 0.3 parts by weight, the sodium acrylate of 0.1 parts by weight, 0.05 parts by weight in object
The N of methyl acrylate and 0.04 parts by weight, N '-methylene-bisacrylamide.
Preparation method includes the following steps:
Step (1), the water contained oil sludge of 100 parts by weight is added in reaction vessels, is stirred at low speed, and revolving speed is
120r/min。
Step (2), the disodium ethylene diamine tetraacetate of 0.05 parts by weight is added into reaction vessels, under conditions of 80 DEG C into
Row stirring, mixing speed 150r/min.
Step (3), after disodium ethylene diamine tetraacetate is all dissolved in greasy filth, stopping stirring is simultaneously cooling by reaction vessels
To room temperature.
Step (4), the acrylic acid of 0.1 parts by weight is added into reaction vessels, stirs evenly, mixing speed 150r/
min。
Step (5), the sodium hydroxide of 0.04 parts by weight is added into reaction vessels, stirs evenly, mixing speed 170r/
min。
The N- butoxy methyl acrylamide of 0.3 parts by weight is added into reaction vessels, stirs evenly for step (6), stirring
Speed is 350r/min.
The methyl methacrylate of 0.05 parts by weight and the ethyl alcohol of 0.1 parts by weight are added into reaction vessels for step (7),
It stirs evenly, mixing speed 350r/min.
Step (8), the N of 0.04 parts by weight is added into reaction vessels, and N '-methylene-bisacrylamide is stirred evenly, stirred
Mixing speed is 250r/min.
The ammonium persulfate of 0.01 parts by weight and the sodium hydrogensulfite of 0.01 parts by weight are added into reaction vessels for step (9),
It stirs evenly, mixing speed 240r/min.
Step (10) is put into reaction vessels in 55 DEG C of thermostat water baths, and 4h is continued.
Embodiment 2
The present embodiment provides a kind of preparation methods of salt tolerant greasy filth profile control agent.
The salt tolerant greasy filth profile control agent to be prepared of the present embodiment includes following component: the moisture content of 100 parts by weight is 80%
Water contained oil sludge, the disodium ethylene diamine tetraacetate of 0.1 parts by weight and the polymer of 0.68 parts by weight, wherein polymer be N- fourth
Oxygroup Methacrylamide, sodium acrylate, methyl methacrylate and N, the copolymer of N '-methylene-bisacrylamide, copolymerization
It include the N- butoxy methyl acrylamide of 0.4 parts by weight, the sodium acrylate of 0.14 parts by weight, the first of 0.08 parts by weight in object
The N of base methyl acrylate and 0.06 parts by weight, N '-methylene-bisacrylamide.
Preparation method includes the following steps:
Step (1), the water contained oil sludge of 100 parts by weight is added in reaction vessels, is stirred at low speed, and revolving speed is
120r/min。
Step (2), the disodium ethylene diamine tetraacetate of 0.1 parts by weight is added into reaction vessels, under conditions of 80 DEG C into
Row stirring, mixing speed 150r/min.
Step (3), after disodium ethylene diamine tetraacetate is all dissolved in greasy filth, stopping stirring is simultaneously cooling by reaction vessels
To room temperature.
Step (4), the acrylic acid of 0.15 parts by weight is added into reaction vessels, stirs evenly, mixing speed 150r/
min。
Step (5), the sodium hydroxide of 0.06 parts by weight is added into reaction vessels, stirs evenly, mixing speed 170r/
min。
The N- butoxy methyl acrylamide of 0.4 parts by weight is added into reaction vessels, stirs evenly for step (6), stirring
Speed is 350r/min.
The methyl methacrylate of 0.08 parts by weight and the ethyl alcohol of 0.1 parts by weight are added into reaction vessels for step (7),
It stirs evenly, mixing speed 350r/min.
Step (8), the N of 0.06 parts by weight is added into reaction vessels, and N '-methylene-bisacrylamide is stirred evenly, stirred
Mixing speed is 250r/min.
The ammonium persulfate of 0.01 parts by weight and the sodium hydrogensulfite of 0.01 parts by weight are added into reaction vessels for step (9),
It stirs evenly, mixing speed 240r/min.
Step (10) is put into reaction vessels in 55 DEG C of thermostat water baths, and 4h is continued.
Embodiment 3
The present embodiment measures the viscosity of salt tolerant greasy filth profile control agent prepared by embodiment 1.Continuous mode is as follows:
Step (1) takes 500mL water flooding to be added to the salt tolerant greasy filth profile control agent that embodiment 1 is prepared；
Step (2), using the viscosity of viscosimeter measurement salt tolerant greasy filth profile control agent, the time of measurement is respectively the 1st day, the 5th
It, the 10th day, the 20th day, the 30th day, the 45th day and the 60th day.
Table 2 is the viscosity for the salt tolerant greasy filth profile control agent that different time measures.
The viscosity for the salt tolerant greasy filth profile control agent that 2 different time of table measures
As shown in Table 2, after water flooding being added into salt tolerant greasy filth profile control agent, the viscosity of profile control agent first increases to be reduced afterwards.In
When water flooding being added into profile control agent, N- butoxy methyl acrylamide, sodium acrylate, methyl methacrylate and N, the Asia N '-
Bisacrylamide also unreacted is complete, so the viscosity in preceding 20 days profile control agents increases increase with time.When N- fourth oxygen
Butylmethacrylamide, sodium acrylate, methyl methacrylate and N, after N '-methylene-bisacrylamide reacts completely, profile control
The viscosity of agent reaches maximum, and due to absorbing water flooding, the viscosity of profile control agent is begun to decline.At the 60th day, profile control agent glued
Degree is still larger, illustrates that the high stability of profile control agent, salt tolerance are preferable.
Embodiment 4
The present embodiment measures the viscosity of salt tolerant greasy filth profile control agent prepared by embodiment 2.Continuous mode is as follows:
Step (1) takes 500mL water flooding to be added to the salt tolerant greasy filth profile control agent that embodiment 2 is prepared；
Step (2), using the viscosity of viscosimeter measurement salt tolerant greasy filth profile control agent, the time of measurement is respectively the 1st day, the 5th
It, the 10th day, the 20th day, the 30th day, the 45th day and the 60th day.
Table 3 is the viscosity for the salt tolerant greasy filth profile control agent that different time measures.
The viscosity for the salt tolerant greasy filth profile control agent that 3 different time of table measures
As shown in Table 3, after water flooding being added into salt tolerant greasy filth profile control agent, the viscosity of profile control agent first increases to be reduced afterwards.In
When water flooding being added into profile control agent, N- butoxy methyl acrylamide, sodium acrylate, methyl methacrylate and N, the Asia N '-
Bisacrylamide also unreacted is complete, so the viscosity in preceding 20 days profile control agents increases increase with time.When N- fourth oxygen
Butylmethacrylamide, sodium acrylate, methyl methacrylate and N, after N '-methylene-bisacrylamide reacts completely, profile control
The viscosity of agent reaches maximum, and due to absorbing water flooding, the viscosity of profile control agent is begun to decline.At the 60th day, profile control agent glued
Degree is still larger, illustrates that the high stability of profile control agent, salt tolerance are preferable.
Embodiment 5
Influence of the acrylamide of the present embodiment measurement different quality part to the viscosity of salt tolerant greasy filth profile control agent.The present embodiment
The mass parts of middle acrylic acid are 0.1, the mass parts of methyl methacrylate are 0.05, change N- butoxy methyl acrylamide
Mass parts.
Experimentation is as follows:
According to the N- butoxy methyl acrylamide of different quality part, five kinds of different salt tolerant greasy filth profile control agents are prepared；
Salt tolerant greasy filth profile control agent is mixed from the water of different salinities, the viscosity of mixture is measured after 30 days.
The viscosity of the corresponding salt tolerant greasy filth profile control agent of acrylamide of 4 different quality part of table
As shown in Table 4, the viscosity of the mixture of the dosage of increase N- butoxy methyl acrylamide, profile control agent and water increases
Add, but changes unobvious.It was determined that the dosage of acrylic acid influences the salt tolerance of profile control agent and little, this is because N-
The salt resistance ability of butoxy methyl acrylamide itself is lower.
Embodiment 6
Viscosity of the acrylic acid and methyl methacrylate of the present embodiment measurement different quality part to salt tolerant greasy filth profile control agent
Influence.The mass parts of acrylamide are 0.5 in the present embodiment, change the mass parts of acrylic acid and methyl methacrylate.
Experimentation is as follows:
According to the acrylic acid and methyl methacrylate of different quality part, three kinds of different salt tolerant greasy filth profile control agents are prepared；
Salt tolerant greasy filth profile control agent is mixed from the water of different salinities, the viscosity of mixture is measured after 30 days.
The acrylic acid of 5 different quality part of table and the viscosity of the corresponding salt tolerant greasy filth profile control agent of methyl methacrylate
As shown in Table 5, with acrylic acid and methyl methacrylate dosage increase, the viscosity of mixture increases, and
Change obvious.It was determined that the dosage of acrylic acid and methyl methacrylate is affected to the salt tolerance of profile control agent, this
It is because the salt resistance ability of acrylic acid and methyl methacrylate itself is higher.
The above is merely for convenience of it will be understood by those skilled in the art that technical solution of the present invention, not to limit
The present invention.All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in this
Within the protection scope of invention.
Claims (8)
1. a kind of salt tolerant greasy filth profile control agent, which is characterized in that the salt tolerant greasy filth profile control agent includes following components: 100 parts by weight
Water contained oil sludge and 0.45-0.81 parts by weight polymer；
Wherein, the polymer is the copolymer of N- butoxy methyl acrylamide, sodium acrylate and methyl methacrylate.
2. salt tolerant greasy filth profile control agent according to claim 1, which is characterized in that N- butoxymethyl third in the copolymer
The mass ratio of acrylamide, sodium acrylate and methyl methacrylate is (0.3-0.5): (0.1-0.21): (0.05-0.1).
3. salt tolerant greasy filth profile control agent according to claim 1, which is characterized in that the salt tolerant greasy filth profile control agent further includes
The disodium ethylene diamine tetraacetate and 0.04-0.08 parts by weight N, N '-methylene-bisacrylamide of 0.05-0.1 parts by weight.
4. salt tolerant greasy filth profile control agent according to claim 1, which is characterized in that the moisture content of the water contained oil sludge is
80%-90%.
5. a kind of preparation method of the described in any item salt tolerant greasy filth profile control agents of claim 1-4, which is characterized in that the method
Include:
The greasy filth of 100 parts by weight is added in reaction vessels, is stirred evenly；
The disodium ethylene diamine tetraacetate of 0.05-0.1 parts by weight is added into the reaction vessels, increases the temperature of reaction vessels,
It stirs evenly；
After disodium ethylene diamine tetraacetate is all dissolved in greasy filth, stop stirring and being cooled to room temperature the reaction vessels；
N- butoxy methyl acrylamide, sodium acrylate, methyl methacrylate, N are added into the reaction vessels, N '-is sub-
Bisacrylamide and initiator, stir evenly, and keep constant temperature preset duration.
6. preparation method according to claim 5, which is characterized in that described that N- butoxy is added into the reaction vessels
Methacrylamide, sodium acrylate, methyl methacrylate, N, N '-methylene-bisacrylamide and initiator, stir evenly,
And keep constant temperature preset duration, comprising:
The acrylic acid of 0.1-0.2 parts by weight is added into the reaction vessels, stirs evenly；
The sodium hydroxide of 0.04-0.08 parts by weight is added into the reaction vessels, stirs evenly；
The methyl methacrylate of 0.05-0.1 parts by weight and the ethyl alcohol of 0.05-0.2 parts by weight are added into the reaction vessels,
It stirs evenly；
The N of 0.04-0.08 parts by weight is added into the reaction vessels, N '-methylene-bisacrylamide stirs evenly；
The initiator of 0.02-0.3 parts by weight is added into the reaction vessels, stirs evenly；
The reaction vessels are put into thermostat water bath, preset duration is continued.
7. preparation method according to claim 6, which is characterized in that the temperature of the thermostat water bath is 55 DEG C -60 DEG C,
Preset duration is 4-5h.
8. preparation method according to claim 5, which is characterized in that the initiator includes 0.01-0.15 parts by weight
The dicyclohexyl peroxydicarbonate of ammonium persulfate and 0.01-0.15 parts by weight.
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