CN101289523B - Reversed phase emulsion polymerization organic-inorganic composite hydrophilic nano-microballoons, preparation and applications thereof - Google Patents
Reversed phase emulsion polymerization organic-inorganic composite hydrophilic nano-microballoons, preparation and applications thereof Download PDFInfo
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Abstract
The invention discloses an opposite phase latex polymerization organic-inorganic composite hydrophilicity nano microballoon and a method for making the same as well as an application. The method comprises the following steps that: an interlayer dressing agent and clay are added into water to mix, a water-solubility monomer is added to mix evenly, cyclohexane, emulsifying agent and evocating agent are added to mix evenly, the mixing fluid system is stirred and heated up, after the reaction is over, the product is obtained. The water-solubility monomer is any one or a compound of acrylamide, acrylic acid, acrylonitrile, acrylic ester or propenol according to any ratio; the emulsifying agent is a compound of 80 of Span and 60 of Tween. The hydrophilicity nano microballoon material has an interlayer size of between 100 and 250 nanometers, has good anti-shear performance, pouring performance, temperature resistance, anti-salt performance, acid and alkali resistance and moving performance inside a porous medium, and has simple and convenient preparation technique and low production cost. The material can be applied to the oil gas exploration field to solve the technical problems that the petroleum deposit condition is increasingly harsh, and the requirement of the performance of the profile control material in the deep part of the petroleum deposit is higher in the late-mid period of oil field exploration.
Description
Technical field
The present invention relates to polymeric microball material, particularly a kind of reversed phase emulsion polymerization organic-inorganic composite hydrophilic nano-microballoon and preparation method thereof and application.
Background technology
Polymer microsphere be meant diameter at nano level to micron, be shaped as the macromolecular material or the polymer composite of sphere or other solid.The research of polymeric microball material and application developed very fast in recent years, because special pattern and size, polymer microsphere possesses the not available specific function of other material.The application of polymer microsphere has been penetrated into each corner of our life, from bulk products such as coating, paper surface coating, makeup, all be applied to polymeric microball material with the high added value of chromatography media to the micro-capsule, the protein separation that are used for medicament slow release control.The reversed phase emulsion polymerization organic-inorganic composite hydrophilic nano-microballoon is used in the oil-gas mining field and is not appeared in the newspapers as yet at present.At present, in the oil deposit deep part transfer drive material, organic adjusting driving agnet temperature resistant antisalt ability, cost costliness; And the selectivity of inorganic profile control and oil displacement and injection are relatively poor.Demand developing a kind of low cost urgently, have the material of good temperature resistant antisalt and selectivity injection efficiency.
Summary of the invention
The purpose of this invention is to provide reversed phase emulsion polymerization organic-inorganic composite hydrophilic nano-microballoon and preparation method thereof and application.
The method for preparing the reversed phase emulsion polymerization organic-inorganic composite hydrophilic nano-microballoon provided by the invention comprises the steps:
1) mixing in water with interlayer modifier and clay obtains the mixing solutions of clay;
2) in the mixing solutions of above-mentioned clay, add water-soluble monomer, and be stirred to mixing, obtain containing the aqueous solution of water-soluble monomer and clay; Wherein, water-soluble monomer is the mixture of a kind of or its arbitrary proportion in acrylamide, vinylformic acid, vinyl cyanide, acrylate or the vinylcarbinol monomer;
3) in the above-mentioned aqueous solution that contains water-soluble monomer and clay, add hexanaphthene, emulsifying agent and initiator, and be stirred to mixing, obtain Water in Oil emulsion;
Wherein, emulsifying agent is the mixture of sorbester p17 (Span80) and polysorbate60 (Tweeen60), and initiator is azobisisobutyronitrile AIBN;
4) the water-in-oil-type microemulsion of aforementioned stable is heated under agitation condition react, obtain reversed phase emulsion polymerization organic-inorganic composite hydrophilic nano-microballoon provided by the invention.
In this method, the ratio of quality and the number of copies of interlayer modifier and clay is 0.3-0.5: 4-6, the mass fraction of water is 80-100, the mass fraction of water-soluble monomer is 9-11, the mass fraction of hexanaphthene is 110-120, the mass fraction of emulsifying agent is 0.2-0.4, and the mass fraction of initiator is 0.01-0.03; Wherein, above-mentioned two kinds of emulsifying agents can mix by arbitrary proportion, and the preferred mass ratio is 1: 1 a mixture.
In step 1)-step 3), mixing speed is 10000-15000r/min, and churning time is 20-40min;
In the step 4),, will cause polyreaction can not take place because mixing speed is higher than 1000r/min; And be lower than 500r/min when mixing speed, will cause reaction solution sedimentation before polymerization not, so the mixing speed that this step suits is 500-1000r/min.Temperature of reaction is 50-70 ℃, and preferred 55-65 ℃, the reaction times is 120-150min; Reaction finishes and promptly obtains the reversed phase emulsion polymerization organic-inorganic composite hydrophilic nano-microballoon, does not need last handling processes such as insulation.
Among the above-mentioned preparation method, used clay is a unselected clay, and wherein the quality percentage composition of montmorillonite is 80%-98%.Used interlayer modifier is to be 200810102231.8 according to number of patent application, and patent name obtains for the preparation method in " a kind of multiple quaternary ammonium salts clay interlaminar modifier and preparation method thereof ".The method of above-mentioned multiple quaternary ammonium salts clay interlaminar modifier comprises the steps:
1) unsaturated fatty acids is dissolved in the dimethylbenzene, and and catalyst mix, be heated to 180-220 ℃, add diethylenetriamine again and react, obtain bisamide;
2) bisamide is mixed with ethanol, be heated to 30-40 ℃, add polyethylene polyamine again, react, obtain multiple quaternary ammonium salts clay interlaminar modifier at 70-80 ℃;
Wherein, used unsaturated fatty acids is the mixture of a kind of or its arbitrary combination in Semen Myristicae oleic acid, Zoomeric acid, oleic acid, ricinolic acid or the erucic acid, preferred ricinolic acid; Used polyethylene polyamine is the mixture of a kind of or its arbitrary combination in quadrol, triethylene tetramine, tetraethylene pentamine or the 3-chloro-2-hydroxypropyl-trimethyl ammonium chloride, preferred 3-chloro-2-hydroxypropyl-trimethyl ammonium chloride; Catalyst system therefor is any one in aluminium sesquioxide, phosphoric acid or the boric acid.
Among the above-mentioned preparation method, the mol ratio of unsaturated fatty acids, diethylenetriamine and polyethylene polyamine is 1.5-2: 0.8-1: 0.8-1, and the mol ratio of catalyzer and unsaturated fatty acids is 0.05-0.1: 0.08-1.2.In the step 1), when diethylenetriamine and unsaturated fatty acids, dimethylbenzene and catalyzer reacted, temperature of reaction must be controlled between 180-220 ℃, was lower than the 180-220 ℃ of reaction that other type can take place, and being higher than this temperature raw material medicine can decompose; The reaction times of this step is 1.5-2.5h; Step 2) in, the reaction times is 2-4h.
In addition; the oil deposit deep part transfer drive material that it is activeconstituents that reversed phase emulsion polymerization organic-inorganic composite hydrophilic nano-microballoon, the application of this Nano microsphere in preparation oil reservoir transfer drive material that utilizes preparation method provided by the invention to obtain reaches with reversed phase emulsion polymerization organic-inorganic composite hydrophilic nano-microballoon provided by the invention also belongs to protection scope of the present invention.
Reversed phase emulsion polymerization organic-inorganic composite hydrophilic nano-micro-sphere material provided by the invention has following characteristics:
1) the present invention utilizes the polymerization in the reversed-phase emulsion system of water-soluble monomer and inorganic clay to form the organic-inorganic composite hydrophilic nano-micro-sphere material.
2) method for preparing polymeric microball material provided by the invention, technology is easy, easy handling, production cost is low.
3) hydrophilic nano micro-sphere material provided by the invention, its interlayer is of a size of 100-250nm, have good anti-shearing, injection efficiency, temperature resistant antisalt, acid-proof alkaline and the migration performance in porous medium, can be used for the oil-gas mining field, to solve the oil-field development middle and later periods, reservoir condition is more and more harsher, for the more and more higher technical barrier of performance requriements of oil deposit deep part transfer drive material.The operation technique of a series of oil-gas minings such as the transfer drive that this material can be used for the transfer drive of conventional oil reservoir transfer drive, high temperature and high salt oil deposit, do with acidifying connection, high acid gas-containing gas field profile control and water plugging.
Description of drawings
Fig. 1 is the organic-inorganic composite hydrophilic nano-microballoons material SEM photo of the embodiment of the invention 1 preparation.
Fig. 2 is the embodiment of the invention 2 preparation organic-inorganic composite hydrophilic nano-microballoons material SEM photos.
Fig. 3 is the embodiment of the invention 3 preparation organic-inorganic composite hydrophilic nano-microballoons material SEM photos.
Fig. 4 is the embodiment of the invention 4 preparation organic-inorganic composite hydrophilic nano-microballoons material SEM photos.
Fig. 5 is the embodiment of the invention 5 preparation organic-inorganic composite hydrophilic nano-microballoons material SEM photos.
Fig. 6 is the embodiment of the invention 6 preparation organic-inorganic composite hydrophilic nano-microballoons material SEM photos.
Fig. 7 is the embodiment of the invention 7 preparation organic-inorganic composite hydrophilic nano-microballoons material SEM photos.
Embodiment
The invention will be further described below in conjunction with specific embodiment, but the present invention is not limited to following examples.
Embodiment 1, preparation reversed phase emulsion polymerization organic-inorganic composite hydrophilic nano-microballoon
1) 0.3g interlayer modifier and 4g clay are dissolved in the 100g water, mixing obtains the mixing solutions of clay;
2) adding acrylamide 9g in the mixing solutions of above-mentioned clay, and stirring velocity is 10000r/min, stirs 20min to mixing, obtains containing the aqueous phase solution of water-soluble monomer and clay;
3) in aqueous phase solution, add 110g hexanaphthene, emulsifying agent (Span80 is 0.15g, and Tween60 is 0.15g) and 0.01g initiator A IBN, and stir 20min under the low whipping speed 10000r/min condition, obtain stable Water in Oil emulsion to mixing;
4) the water-in-oil-type microemulsion of aforementioned stable is heated to 55 ℃ under the 500r/min condition and reacts 120min stirring, obtain the reversed phase emulsion polymerization organic-inorganic composite hydrophilic nano-microballoon.
The preparation method of used interlayer modifier is as follows among this preparation method:
The ricinolic acid of 32.4g (0.1mol) is put into 15mL dimethylbenzene and 1.02g (0.01mol) aluminium sesquioxide adding reactor, after being heated to 180 ℃, diethylenetriamine with dropping funnel Dropwise 5 .3g (0.0515mol) in reaction solution, to react and constantly tell by water trap, stir 1.5hour, evaporation removes removal xylene, obtains bisamide;
43.6g (0.05mol) bisamide and 12ml ethanol are joined in the reactor, be heated to 30 ℃, in reaction system, drip 23g (0.05mol) 3-chloro-2-hydroxypropyl-trimethyl ammonium chloride solution, be warming up to 70 ℃ with dropping funnel, stirring reaction 2h obtains the interlayer modifier.
Fig. 1 is the organic-inorganic composite hydrophilic nano-microballoons material SEM photo of embodiment 1 preparation.This material is when using as oil deposit deep part transfer drive material, and its pressure gradient is 0.132MPa/m.
1) 0.5g interlayer modifier and 6g clay are dissolved in the 80g water, mixing obtains the mixing solutions of clay;
2) adding acrylamide 11g in the mixing solutions of above-mentioned clay, and stirring velocity is 15000r/min, stirs 40min to mixing, obtains containing the aqueous phase solution of water-soluble monomer and clay;
3) in aqueous phase solution, add 120g hexanaphthene, emulsifying agent (Span80 is 0.15g, and Tween60 is 0.25g) and 0.03g initiator A IBN, and stir 40min under the low whipping speed 15000r/min condition, obtain stable Water in Oil emulsion to mixing;
4) the water-in-oil-type microemulsion of aforementioned stable is heated to 65 ℃ under the 1000r/min condition and reacts 150min stirring, obtain the reversed phase emulsion polymerization organic-inorganic composite hydrophilic nano-microballoon.
The preparation method of used interlayer modifier is as follows among this preparation method:
The ricinolic acid of 32.4g (0.1mol) is put into 15mL dimethylbenzene and 1.02g (0.01mol) aluminium sesquioxide adding reactor, after being heated to 220 ℃, diethylenetriamine with dropping funnel Dropwise 5 .3g (0.0515mol) in reaction solution, to react and constantly tell by water trap, stir 2.5hour, evaporation removes removal xylene, obtains bisamide;
43.6g (0.05mol) bisamide and 12ml ethanol are joined in the reactor, be heated to 40 ℃, in reaction system, drip 23g (0.05mol) 3-chloro-2-hydroxypropyl-trimethyl ammonium chloride solution, be warming up to 80 ℃ with dropping funnel, stirring reaction 4h obtains the interlayer modifier.
Fig. 2 is the organic-inorganic composite hydrophilic nano-microballoons material SEM photo of embodiment 2 preparations.This material is when using as oil deposit deep part transfer drive material, and its pressure gradient is 0.106MPa/m.
Embodiment 3, preparation reversed phase emulsion polymerization organic-inorganic composite hydrophilic nano-microballoon
1) 0.4g interlayer modifier and 5g clay are dissolved in the 90g water, mixing obtains the mixing solutions of clay;
2) adding vinylformic acid 10g in the mixing solutions of above-mentioned clay, and stirring velocity is 12500r/min, stirs 30min to mixing, obtains containing the aqueous phase solution of water-soluble monomer and clay;
3) in aqueous phase solution, add 115g hexanaphthene, emulsifying agent (Span80 is 0.10g, and Tween60 is 0.10g) and 0.02g initiator A IBN, and stir 30min under the low whipping speed 12500r/min condition, obtain stable Water in Oil emulsion to mixing;
4) the water-in-oil-type microemulsion of aforementioned stable is heated to 60 ℃ under the 750r/min condition and reacts 135min stirring, obtain the reversed phase emulsion polymerization organic-inorganic composite hydrophilic nano-microballoon.
The preparation method of used interlayer modifier is as follows among this preparation method:
The ricinolic acid of 32.4g (0.1mol) is put into 15mL dimethylbenzene and 1.02g (0.01mol) boric acid adding reactor, after being heated to 200 ℃, diethylenetriamine with dropping funnel Dropwise 5 .3g (0.0515mol) in reaction solution, to react and constantly tell by water trap, stir 2.0hour, evaporation removes removal xylene, obtains bisamide;
43.6g (0.05mol) bisamide and 12ml ethanol are joined in the reactor, be heated to 35 ℃, in reaction system, drip 23g (0.05mol) 3-chloro-2-hydroxypropyl-trimethyl ammonium chloride solution, be warming up to 75 ℃ with dropping funnel, stirring reaction 3h obtains the interlayer modifier.
Fig. 3 is the organic-inorganic composite hydrophilic nano-microballoons material SEM photo of embodiment 3 preparations.This material is when using as oil deposit deep part transfer drive material, and its pressure gradient is 0.115MPa/m.
Embodiment 4, preparation reversed phase emulsion polymerization organic-inorganic composite hydrophilic nano-microballoon
1) 0.3g interlayer modifier and 4g clay are dissolved in the 80g water, mixing obtains the mixing solutions of clay;
2) adding vinylcarbinol 9g in the mixing solutions of above-mentioned clay, and stirring velocity is 15000r/min, stirs 20min to mixing, obtains containing the aqueous phase solution of water-soluble monomer and clay;
3) in aqueous phase solution, add 115g hexanaphthene, emulsifying agent (Span80 is 0.20g, and Tween60 is 0.20g) and 0.02g initiator A IBN, and stir 30min under the low whipping speed 12500r/min condition, obtain stable Water in Oil emulsion to mixing;
4) the water-in-oil-type microemulsion of aforementioned stable is heated to 60 ℃ under the 750r/min condition and reacts 135min stirring, obtain the reversed phase emulsion polymerization organic-inorganic composite hydrophilic nano-microballoon.
The preparation method of used interlayer modifier is as follows among this preparation method:
The ricinolic acid of 32.4g (0.1mol) is put into 15mL dimethylbenzene and 1.02g (0.01mol) aluminium sesquioxide adding reactor, after being heated to 180 ℃, diethylenetriamine with dropping funnel Dropwise 5 .3g (0.0515mol) in reaction solution, to react and constantly tell by water trap, stir 2.5hour, evaporation removes removal xylene, obtains bisamide;
43.6g (0.05mol) bisamide and 12ml ethanol are joined in the reactor, be heated to 30 ℃, in reaction system, drip 23g (0.05mol) 3-chloro-2-hydroxypropyl-trimethyl ammonium chloride solution, be warming up to 80 ℃ with dropping funnel, stirring reaction 4h obtains the interlayer modifier.
Fig. 4 is the organic-inorganic composite hydrophilic nano-microballoons material SEM photo of embodiment 4 preparations.This material is when using as oil deposit deep part transfer drive material, and its pressure gradient is 0.098MPa/m.
Embodiment 5, preparation reversed phase emulsion polymerization organic-inorganic composite hydrophilic nano-microballoon
1) 0.4g interlayer modifier and 5g clay are dissolved in the 90g water, mixing obtains the mixing solutions of clay;
2) adding acrylamide 10g in the mixing solutions of above-mentioned clay, and stirring velocity is 12500r/min, stirs 30min to mixing, obtains containing the aqueous phase solution of water-soluble monomer and clay;
3) in aqueous phase solution, add 110g hexanaphthene, emulsifying agent (Span80 is 0.15g, and Tween60 is 0.15g) and 0.01g initiator A IBN, and stir 20min under the low whipping speed 15000r/min condition, obtain stable Water in Oil emulsion to mixing;
4) the water-in-oil-type microemulsion of aforementioned stable is heated to 55 ℃ under the 500r/min condition and reacts 120min stirring, obtain the reversed phase emulsion polymerization organic-inorganic composite hydrophilic nano-microballoon.
The preparation method of used interlayer modifier is as follows among this preparation method:
The ricinolic acid of 32.4g (0.1mol) is put into 15mL dimethylbenzene and 1.02g (0.01mol) phosphoric acid adding reactor, after being heated to 220 ℃, diethylenetriamine with dropping funnel Dropwise 5 .3g (0.0515mol) in reaction solution, to react and constantly tell by water trap, stir 1.5hour, evaporation removes removal xylene, obtains bisamide;
43.6g (0.05mol) bisamide and 12ml ethanol are joined in the reactor, be heated to 40 ℃, in reaction system, drip 23g (0.05mol) 3-chloro-2-hydroxypropyl-trimethyl ammonium chloride solution, be warming up to 70 ℃ with dropping funnel, stirring reaction 2h obtains the interlayer modifier.
Fig. 5 is the organic-inorganic composite hydrophilic nano-microballoons material SEM photo of embodiment 5 preparations.This material is when using as oil deposit deep part transfer drive material, and its pressure gradient is 0.108MPa/m.
Embodiment 6, preparation reversed phase emulsion polymerization organic-inorganic composite hydrophilic nano-microballoon
1) 0.3g interlayer modifier and 6g clay are dissolved in the 100g water, mixing obtains the mixing solutions of clay;
2) adding acrylamide 11g in the mixing solutions of above-mentioned clay, and stirring velocity is 10000r/min, stirs 40min to mixing, obtains containing the aqueous phase solution of water-soluble monomer and clay;
3) in aqueous phase solution, add 110g hexanaphthene, emulsifying agent (Span80 is 0.15g, and Tween60 is 0.15g) and 0.03g initiator A IBN, and stir 40min under the low whipping speed 10000r/min condition, obtain stable Water in Oil emulsion to mixing;
4) the water-in-oil-type microemulsion of aforementioned stable is heated to 65 ℃ under the 500r/min condition and reacts 120min stirring, obtain the reversed phase emulsion polymerization organic-inorganic composite hydrophilic nano-microballoon.
The preparation method of used interlayer modifier is with shown in the embodiment 1 among this preparation method.
Fig. 6 is the organic-inorganic composite hydrophilic nano-microballoons material SEM photo of embodiment 6 preparations.This material is when using as oil deposit deep part transfer drive material, and its pressure gradient is 0.124MPa/m.
Embodiment 7, preparation reversed phase emulsion polymerization organic-inorganic composite hydrophilic nano-microballoon
1) 0.4g interlayer modifier and 4g clay are dissolved in the 90g water, mixing obtains the mixing solutions of clay;
2) adding acrylamide 10g in the mixing solutions of above-mentioned clay, and stirring velocity is 12500r/min, stirs 30min to mixing, obtains containing the aqueous phase solution of water-soluble monomer and clay;
3) in aqueous phase solution, add 120g hexanaphthene, emulsifying agent (Span80 is 0.15g, and Tween60 is 0.15g) and 0.03g initiator A IBN, and stir 20min under the low whipping speed 10000r/min condition, obtain stable Water in Oil emulsion to mixing;
4) the water-in-oil-type microemulsion of aforementioned stable is heated to 60 ℃ under the 750r/min condition and reacts 150min stirring, obtain the reversed phase emulsion polymerization organic-inorganic composite hydrophilic nano-microballoon.
The preparation method of used interlayer modifier is with shown in the embodiment 3 among this preparation method.
Fig. 7 is the organic-inorganic composite hydrophilic nano-microballoons material SEM photo of embodiment 7 preparations.This material is when using as oil deposit deep part transfer drive material, and its pressure gradient is 0.095MPa/m.
Claims (8)
1. a method for preparing the reversed phase emulsion polymerization organic-inorganic composite hydrophilic nano-microballoon comprises the steps:
1) mixing in water with interlayer modifier and clay obtains the mixing solutions of clay;
The preparation method of described interlayer modifier comprises the steps:
A) unsaturated fatty acids is dissolved in the dimethylbenzene, and and catalyst mix, be heated to 180-220 ℃, add diethylenetriamine again and react, obtain bisamide;
Described unsaturated fatty acids is the mixture of a kind of or its arbitrary combination in Semen Myristicae oleic acid, Zoomeric acid, oleic acid, ricinolic acid or the erucic acid;
Described catalyzer is any one in aluminium sesquioxide, phosphoric acid or the boric acid;
Described temperature of reaction is 180-220 ℃;
B) bisamide is mixed with ethanol, be heated to 30-40 ℃, add polyethylene polyamine again, react, obtain the interlayer modifier at 70-80 ℃;
Described polyethylene polyamine is the mixture of a kind of or its arbitrary combination in quadrol, triethylene tetramine, tetraethylene pentamine or the 3-chloro-2-hydroxypropyl-trimethyl ammonium chloride;
2) add water-soluble monomer in the mixing solutions of the clay that described step 1) obtains, stirring and evenly mixing obtains containing the aqueous solution of water-soluble monomer and clay; Wherein, described water-soluble monomer is the mixture of any one or its arbitrary proportion in acrylamide, vinylformic acid, vinyl cyanide, acrylate or the vinylcarbinol;
3) to described step 2) in the aqueous solution that contains water-soluble monomer and clay that obtains, add hexanaphthene, emulsifying agent and initiator, stirring and evenly mixing obtains Water in Oil emulsion; Wherein, described emulsifying agent is the mixture of sorbester p17 and polysorbate60, and described initiator is a Diisopropyl azodicarboxylate;
4) Water in Oil emulsion that described step 3) is obtained heats under agitation condition and reacts, and obtains described reversed phase emulsion polymerization organic-inorganic composite hydrophilic nano-microballoon;
In the described step 4), mixing speed is 500-1000r/min.
2. preparation method according to claim 1, it is characterized in that: the ratio of quality and the number of copies of described interlayer modifier and clay is 0.3-0.5: 4-6, the mass fraction of water is 80-100, the mass fraction of described water-soluble monomer is 9-11, the mass fraction of described hexanaphthene is 110-120, the mass fraction of described emulsifying agent is 0.2-0.4, and the mass fraction of described initiator is 0.01-0.03.
3. preparation method according to claim 1 and 2 is characterized in that: in the described step 1), mixing speed is 10000-15000r/min, and churning time is 20-40min;
Described step 2) in, mixing speed is 10000-15000r/min, and churning time is 20-40min;
In the described step 3), mixing speed is 10000-15000r/min, and churning time is 20-40min;
In the described step 4), temperature of reaction is 50-70 ℃, and the reaction times is 120-150min.
4. preparation method according to claim 3 is characterized in that: in the described step 4), temperature of reaction is 55-65 ℃.
5. preparation method according to claim 1 and 2 is characterized in that: in the described step 3), the mass ratio of described Span80 and Tweeen60 is 1: 1.
6. the reversed phase emulsion polymerization organic-inorganic composite hydrophilic nano-microballoon that obtains of the arbitrary described preparation method of claim 1-5.
7. the application of the described reversed phase emulsion polymerization organic-inorganic composite hydrophilic nano-microballoon of claim 6 in preparation oil reservoir transfer drive material.
8. the oil reservoir transfer drive material that is activeconstituents with the described reversed phase emulsion polymerization organic-inorganic composite hydrophilic nano-microballoon of claim 6.
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| CN107603577A (en) * | 2017-10-17 | 2018-01-19 | 中国海洋石油总公司 | A kind of conversed phase micro emulsion copolymerization interlayer modification clay alteration AM VA pour point depressant for crude oil and preparation method thereof |
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| CN103936944B (en) * | 2014-04-21 | 2016-08-17 | 中国海洋石油总公司 | A kind of method of reversed phase emulsion polymerization organic-inorganic composite hydrophilic nano microsphere |
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| CN107603577A (en) * | 2017-10-17 | 2018-01-19 | 中国海洋石油总公司 | A kind of conversed phase micro emulsion copolymerization interlayer modification clay alteration AM VA pour point depressant for crude oil and preparation method thereof |
| CN107603577B (en) * | 2017-10-17 | 2020-06-30 | 中国海洋石油集团有限公司 | Reversed-phase microemulsion polymerization interlayer modified clay modified AM-VA crude oil pour point depressant and preparation method thereof |
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