CN104098737A - Heterogeneous nano-active oil-displacing agent and preparation method thereof - Google Patents
Heterogeneous nano-active oil-displacing agent and preparation method thereof Download PDFInfo
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- CN104098737A CN104098737A CN201410353399.1A CN201410353399A CN104098737A CN 104098737 A CN104098737 A CN 104098737A CN 201410353399 A CN201410353399 A CN 201410353399A CN 104098737 A CN104098737 A CN 104098737A
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Abstract
The invention discloses a heterogeneous nano-active oil-displacing agent and a preparation method thereof, and belongs to the technical field of macromolecule synthesis. The oil-displacing agent comprises the following raw materials in parts by weight: 60 to 120 parts of acrylamide, 20 to 50 parts of an anionic monomer, 5 to 10 parts of a cationic monomer, 3 to 10 parts of a cross-linking agent, 200 to 400 parts of whiting oil, 20 to 40 parts of an emulsifier, 300 to 500 parts of deionized water, 0.03 to 0.1 part of an oxidant, and 0.03 to 0.1 part of a reducing agent. The heterogeneous nano-active oil-displacing agent is a water-in-oil inverse micro-emulsion system, is so instant that the heterogeneous nano-active oil-displacing agent can be dissolved in a water solution in 30 seconds while the viscosity is stable, is simple and convenient to use during on-site construction, low in micro-sol system viscosity, easy to infuse, and can be directly prepared with sewage. The heterogeneous nano-active oil-displacing agent is shearing resistant, movable and free of blockage.
Description
Technical field
The present invention relates to water-soluble polymer synthesis technical field, relate in particular to a kind of heterogeneous nano active oil-displacing agent and preparation method thereof.
Background technology
All mining phases in the middle and later periods of most of oil fields of China at present, generally adopt the oil production technology with water displacing oil, after the strengthening mining of decades, most of oil field has all entered " high moisture, high investment, low output " period, and the water problems oil supply field that goes out of oil well has been brought and had a strong impact on simultaneously.Therefore take water injection well to carry out profile control, the method for selectively blocking off most permeable zone macropore is improved intake profile, and agent for improving oilfield recovery is significant.
And there is following shortcoming in current oil-displacing agent.
1, heatproof, not resistance to shearing, deformability are not poor for volume expansion grain amendment;
2, linear polyacrylamide cannot be shouted and carry out effective shutoff macropore.
Summary of the invention
The object of the invention is to provide a kind of heterogeneous nano active oil-displacing agent and preparation method thereof.
The technical scheme that the present invention takes is:
Heterogeneous nano active oil-displacing agent of the present invention is made up of the raw material of following weight part: acrylamide 60-120, anionic monomer 20-50, cationic monomer 5-10, linking agent 3-10, white oil 200-400, emulsifying agent 20-40, deionized water 300-500, oxygenant 0.03-0.1, reductive agent 0.03-0.1.
Preferred: oil-displacing agent of the present invention is made up of the raw material of following weight part: acrylamide 90, anionic monomer 35, cationic monomer 8, linking agent 7, white oil 300, emulsifying agent 30, deionized water 400, oxygenant 0.06, reductive agent 0.06.
Described anionic monomer is any in vinylformic acid, fluorine-containing, fluorine-containing methacrylic acid, silyl acrylate, siliceous methacrylic acid, methylene-succinic acid, 2-acrylamide-2-methylpro panesulfonic acid, sulfonated α-olefin.
Described cationic monomer is one or more the mixture in allyl group trimethyl ammonium chloride, vinyl benzyl trimethyl ammonium chloride, 2-(methacryloxypropyl) ethyl-trimethyl salmiac, dimethyl [2-(methacryloxy) ethyl] [3-(trimethoxy silicon propyl group] ammonium chloride.
Described linking agent is any in dimethylaminoethyl acrylate, dimethylaminoethyl methacrylate, dimethylamino methyl ethyl propenoate.
Described emulsifying agent is one or more the mixture in acid amides, tween, OP.Described acid amides is one or more the mixture in amine hydroxybenzene, coconut oleoyl amine, palmitic amide, laurylamide.Described tween is one or more the mixture in polysorbas20, polysorbate40, polysorbate60, polysorbate65, tween 80, polysorbate85; Described OP is one or more the mixture in OP-4, OP-7, OP-10.
Described oxygenant is any in ammonium persulphate, Potassium Persulphate, Sodium Persulfate, isopropyl benzene hydroperoxide, hydrogen peroxide, dibenzoyl peroxide.
Described reductive agent is any in sodium bisulfite, Sulfothiorine, trolamine, ferrous sulfate, xylidine.
The preparation method's of heterogeneous nano active oil-displacing agent of the present invention concrete steps are as follows:
(1) monomer solution preparation
1) in deionized water, add acrylamide, anionic monomer, cationic monomer, linking agent, stirs;
2) in white oil, add emulsifying agent, stir;
(2) Reverse Microemulsion System configuration
By step 1) gained mixture joins step 2) in, fully stir, obtain clear solution system system;
(3) solution polymerization
By Reverse Microemulsion System constant temperature to 30 DEG C, pass into nitrogen 30min, add oxygenant, pass into nitrogen 10min, add reductive agent, continue logical nitrogen 20min, stop logical nitrogen, temperature of reaction system is warming up to 40 DEG C of isothermal reactions 6 hours, can make heterogeneous nano active oil-displacing agent of the present invention.
In technical scheme of the present invention, added linking agent, solution forms nano level molecule in polymerization process, pre-water-soluble swollen rear formation micron base particle;
Positively effect of the present invention is as follows:
In technical scheme of the present invention, added linking agent, solution forms nano level molecule in polymerization process, pre-water-soluble swollen rear formation micron base particle.
In technical scheme of the present invention, added cationic monomer, in solution, microballoon outside is with negative charge, swellable in water, does not adsorb with the formation rock of immediate vicinity of wellbore; Internal layer is the cross-linking type gel with positive charge, and in water, swelling speed is faster than layer component outside microballoon, when therefore volumetric expansion acquires a certain degree, positive charge can be exposed, and electrically absorption occurs between microballoon, has shut-off capacity, positive charge also can be adsorbed on rock surface, improves plugging effect.
Heterogeneous nano active oil-displacing agent of the present invention is water-in-oil Reverse Microemulsion System, has instantly-soluble, and within 30 seconds, solution viscosity reaches stable, simple process in site operation process, and micro-sol system viscosity is low, injects easily, can directly prepare with sewage.
Heterogeneous nano active oil-displacing agent of the present invention has advantages of resistance to shearing, removable, stifled not dead.
Embodiment
The following examples are to describe in further detail of the present invention.
Embodiment 1
Heterogeneous nano active oil-displacing agent of the present invention is made up of the raw material of following weight part: acrylamide 60, vinylformic acid 50, allyl group trimethyl ammonium chloride 5, dimethylaminoethyl acrylate 10, white oil 200, Tween-65 40, deionized water 300, ammonium persulphate 0.1, sodium bisulfite 0.03.
The preparation method's of heterogeneous nano active oil-displacing agent of the present invention concrete steps are as follows:
(1) monomer solution preparation
1) in deionized water, add acrylamide, anionic monomer, cationic monomer, linking agent, stirs;
2) in white oil, add emulsifying agent, stir;
(2) Reverse Microemulsion System configuration
By step 1) gained mixture joins step 2) in, fully stir, obtain clear solution system system;
(3) solution polymerization
By Reverse Microemulsion System constant temperature to 30 DEG C, pass into nitrogen 30min, add oxygenant, pass into nitrogen 10min, add reductive agent, continue logical nitrogen 20min, stop logical nitrogen, temperature of reaction system is warming up to 40 DEG C of isothermal reactions 6 hours, can make heterogeneous nano active oil-displacing agent of the present invention.
Embodiment 2
Heterogeneous nano active oil-displacing agent of the present invention is made up of the raw material of following weight part: acrylamide 120, sulfonated α-olefin 20, dimethyl [2-(methacryloxy) ethyl] [3-(trimethoxy silicon propyl group] ammonium chloride 10, dimethylamino methyl ethyl propenoate 3, white oil 400, OP-10 20, deionized water 500, dibenzoyl peroxide 0.03, xylidine 0.1.
Preparation method is with embodiment 1.
Embodiment 3
Heterogeneous nano active oil-displacing agent of the present invention is made up of the raw material of following weight part: acrylamide 90, fluorine-containing 20, vinyl benzyl trimethyl ammonium chloride 8, dimethylaminoethyl methacrylate 10, white oil 300, amine hydroxybenzene and OP-4 20, deionized water 400, Potassium Persulphate 0.1, Sulfothiorine 0.06.
Preparation method is with embodiment 1.
Embodiment 4
Heterogeneous nano active oil-displacing agent of the present invention is made up of the raw material of following weight part: acrylamide 90,2-acrylamide-2-methylpro panesulfonic acid 35, allyl group trimethyl ammonium chloride and 2-(methacryloxypropyl) ethyl-trimethyl salmiac 8, dimethylaminoethyl acrylate 7, white oil 300, laurylamide and tween-80 30, deionized water 400, hydrogen peroxidase 10 .06, ferrous sulfate 0.06.
Preparation method is with embodiment 1.
The Oil Displacing Capacity of heterogeneous nano active oil-displacing agent of the present invention:
Oil-displacing agent prepared by embodiment of the present invention 1-4 carries out oil displacement test, and experimental result as shown in Table 1 and Table 2.
Table 1
From table 1 experimental data, the recovery ratio of water drive is below 45% under normal circumstances, utilize common polyacrylamide polymers solution can improve the recovery ratio that approaches 12%, recycle on this basis heterogeneous nano active oil-displacing agent of the present invention and carry out the displacement of reservoir oil, can also again improve the recovery ratio that approaches 16%, it is 15.99% that statistics can obtain this average recovery ratio that uses heterogeneous nano active oil-displacing agent to improve, illustrate that heterogeneous nano active oil-displacing agent can improve reservoir permeability after poly-driving, adjust intake profile, improve recovery ratio.
Table 2
Before and after using as can be seen from Table 2 the heterogeneous nano active oil-displacing agent of the present invention, water survey rate of permeation has considerable change, sealing ratiod can reach 80%, improve greatly oil recovery factor, can reach so high sealing ratiod the heterogeneous nano active oil-displacing agent of the present invention changeable type passing hole channel is also described, when arriving high permeability formation, tight formation is also had to certain plugging characteristics, moreover, it does not block low permeability layer in shutoff most permeable zone, thereby thereby raising sweep area improves the sweep efficiency of crude oil, improves oil recovery factor.
Although illustrated and described embodiments of the invention, for the ordinary skill in the art, be appreciated that without departing from the principles and spirit of the present invention and can carry out multiple variation, amendment, replacement and modification to these embodiment, scope of the present invention is limited by claims and equivalent thereof.
Claims (10)
1. a heterogeneous nano active oil-displacing agent, is characterized in that: described oil-displacing agent is made up of the raw material of following weight part: acrylamide 60-120, anionic monomer 20-50, cationic monomer 5-10, linking agent 3-10, white oil 200-400, emulsifying agent 20-40, deionized water 300-500, oxygenant 0.03-0.1, reductive agent 0.03-0.1.
2. heterogeneous nano active oil-displacing agent as claimed in claim 1, is characterized in that: described oil-displacing agent is made up of the raw material of following weight part: acrylamide 90, anionic monomer 35, cationic monomer 8, linking agent 7, white oil 300, emulsifying agent 30, deionized water 400, oxygenant 0.06, reductive agent 0.06.
3. heterogeneous nano active oil-displacing agent as claimed in claim 1 or 2, is characterized in that: described anionic monomer is any in vinylformic acid, fluorine-containing, fluorine-containing methacrylic acid, silyl acrylate, siliceous methacrylic acid, methylene-succinic acid, 2-acrylamide-2-methylpro panesulfonic acid, sulfonated α-olefin.
4. heterogeneous nano active oil-displacing agent as claimed in claim 1 or 2, is characterized in that: described cationic monomer is one or more the mixture in allyl group trimethyl ammonium chloride, vinyl benzyl trimethyl ammonium chloride, 2-(methacryloxypropyl) ethyl-trimethyl salmiac, dimethyl [2-(methacryloxy) ethyl] [3-(trimethoxy silicon propyl group] ammonium chloride.
5. heterogeneous nano active oil-displacing agent as claimed in claim 1 or 2, is characterized in that: described linking agent is any in dimethylaminoethyl acrylate, dimethylaminoethyl methacrylate, dimethylamino methyl ethyl propenoate.
6. heterogeneous nano active oil-displacing agent as claimed in claim 1 or 2, is characterized in that: described emulsifying agent is one or more the mixture in acid amides, tween, OP.
7. heterogeneous nano active oil-displacing agent as claimed in claim 6, is characterized in that: described acid amides is one or more the mixture in amine hydroxybenzene, coconut oleoyl amine, palmitic amide, laurylamide; Described tween is one or more the mixture in polysorbas20, polysorbate40, polysorbate60, polysorbate65, tween 80, polysorbate85; Described OP is one or more the mixture in OP-4, OP-7, OP-10.
8. heterogeneous nano active oil-displacing agent as claimed in claim 1 or 2, is characterized in that: described oxygenant is any in ammonium persulphate, Potassium Persulphate, Sodium Persulfate, isopropyl benzene hydroperoxide, hydrogen peroxide, dibenzoyl peroxide.
9. heterogeneous nano active oil-displacing agent as claimed in claim 1 or 2, is characterized in that: described reductive agent is any in sodium bisulfite, Sulfothiorine, trolamine, ferrous sulfate, xylidine.
10. a method of preparing the heterogeneous nano active oil-displacing agent as described in claim 1-9 any one, is characterized in that: the concrete steps of described method are as follows:
(1) monomer solution preparation
1) in deionized water, add acrylamide, anionic monomer, cationic monomer, linking agent, stirs;
2) in white oil, add emulsifying agent, stir;
(2) Reverse Microemulsion System configuration
By step 1) gained mixture joins step 2) in, fully stir, obtain clear solution system;
(3) solution polymerization
By Reverse Microemulsion System constant temperature to 30 DEG C, pass into nitrogen 30min, add oxygenant, pass into nitrogen 10min, add reductive agent, continue logical nitrogen 20min, stop logical nitrogen, temperature of reaction system is warming up to 40 DEG C of isothermal reactions 6 hours, can make heterogeneous nano active oil-displacing agent of the present invention.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104311733A (en) * | 2014-10-30 | 2015-01-28 | 孙安顺 | Viscosity-maintaining polymer and preparation method thereof |
| CN105754033A (en) * | 2015-11-09 | 2016-07-13 | 唐建云 | Preparation method of polyacrylamide for flooding oil extraction under hypersalinity |
| CN109652042A (en) * | 2018-11-15 | 2019-04-19 | 陕西丰登石化有限公司 | Agent and preparation method thereof is adopted in a kind of increasing of intelligent nano microballoon transfer drive |
| CN111621269A (en) * | 2020-06-12 | 2020-09-04 | 保定市三拓化工产品有限公司 | Large cation coated flocculant and preparation method thereof |
| EP3420047B1 (en) * | 2016-02-23 | 2023-01-11 | Ecolab USA Inc. | Hydrazide crosslinked polymer emulsions for use in crude oil recovery |
| CN115710490A (en) * | 2021-08-23 | 2023-02-24 | 中国石油天然气股份有限公司 | Composite slug deep profile control and flooding agent and preparation method and application thereof |
| CN115873173A (en) * | 2023-03-03 | 2023-03-31 | 山东科兴化工有限责任公司 | Nano polymer microsphere for profile control and flooding and preparation method thereof |
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| CN101759838A (en) * | 2009-12-30 | 2010-06-30 | 中国石油大学(华东) | Preparation method of profile control and oil displacement system of polyacrylamide nanometer microsphere with low interfacial tension |
| CN103739778A (en) * | 2014-01-08 | 2014-04-23 | 天津大学 | Core-shell polyacrylamide microsphere profile controlling oil displacement agent and preparation method thereof |
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2014
- 2014-07-24 CN CN201410353399.1A patent/CN104098737A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101759838A (en) * | 2009-12-30 | 2010-06-30 | 中国石油大学(华东) | Preparation method of profile control and oil displacement system of polyacrylamide nanometer microsphere with low interfacial tension |
| CN103739778A (en) * | 2014-01-08 | 2014-04-23 | 天津大学 | Core-shell polyacrylamide microsphere profile controlling oil displacement agent and preparation method thereof |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104311733A (en) * | 2014-10-30 | 2015-01-28 | 孙安顺 | Viscosity-maintaining polymer and preparation method thereof |
| CN105754033A (en) * | 2015-11-09 | 2016-07-13 | 唐建云 | Preparation method of polyacrylamide for flooding oil extraction under hypersalinity |
| EP3420047B1 (en) * | 2016-02-23 | 2023-01-11 | Ecolab USA Inc. | Hydrazide crosslinked polymer emulsions for use in crude oil recovery |
| CN109652042A (en) * | 2018-11-15 | 2019-04-19 | 陕西丰登石化有限公司 | Agent and preparation method thereof is adopted in a kind of increasing of intelligent nano microballoon transfer drive |
| CN111621269A (en) * | 2020-06-12 | 2020-09-04 | 保定市三拓化工产品有限公司 | Large cation coated flocculant and preparation method thereof |
| CN111621269B (en) * | 2020-06-12 | 2022-04-19 | 保定市三拓化工产品有限公司 | Large cation coated flocculant and preparation method thereof |
| CN115710490A (en) * | 2021-08-23 | 2023-02-24 | 中国石油天然气股份有限公司 | Composite slug deep profile control and flooding agent and preparation method and application thereof |
| CN115873173A (en) * | 2023-03-03 | 2023-03-31 | 山东科兴化工有限责任公司 | Nano polymer microsphere for profile control and flooding and preparation method thereof |
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Owner name: HEILONGJIANG GRAND CHEMICAL CO., LTD. Free format text: FORMER OWNER: SUN ANSHUN Effective date: 20150702 |
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Effective date of registration: 20150702 Address after: 151400 C-7, 3, Wan Baoshan Industrial Park, anda, Heilongjiang Applicant after: Heilongjiang grand Chemical Co., Ltd. Address before: 163714 No. 11 Jianhua East Street, ethylene Xinghua Park, Longfeng District, Heilongjiang, Daqing Applicant before: Sun Anshun |
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Application publication date: 20141015 |