CN103333712A - Demulsifying agent for ternary oil displacement produced liquid - Google Patents
Demulsifying agent for ternary oil displacement produced liquid Download PDFInfo
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- CN103333712A CN103333712A CN2013103045391A CN201310304539A CN103333712A CN 103333712 A CN103333712 A CN 103333712A CN 2013103045391 A CN2013103045391 A CN 2013103045391A CN 201310304539 A CN201310304539 A CN 201310304539A CN 103333712 A CN103333712 A CN 103333712A
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Abstract
A preparation method of a demulsifying agent for a ternary oil displacement produced liquid comprises the steps as follows: 1), the demulsifying agent is prepared through materials in percentage by weight as follows: 10%-13% of a modified phenolic resin, 17%-19% of a maleic anhydride-propylene oxide copolymer, 4.5%-6% of polyether glycol, 1.8%-4.5% of ethylene glycol butyl ether and the balance a safe and environment-friendly type aromatic solvent; 2), 1/3 of the aromatic solvent is added to a mixing tank, and then stirring is started; 3), all the modified phenolic resin is added to the mixing tank, and stirring is continued, so that the modified phenolic resin is dissolved completely; 4), the maleic anhydride-propylene oxide copolymer is added to the mixing tank, and stirring is continued, so that the maleic anhydride-propylene oxide copolymer is dissolved completely; 5), the polyether glycol is added to the mixing tank, stirring is continued, and the temperature inside the mixing tank is kept to be above 15 DEG C at the same time; 6), all the ethylene glycol butyl ether is added, and stirring is continued; and 7), the surplus aromatic solvent is added to the mixing tank, and stirring is continued for 25 mintutes-35 minutes, so that the demulsifying agent for the ternary oil displacement produced liquid is obtained. The demulsifying agent for the ternary oil displacement produced liquid is high in demulsifying speed, good in oil-water separation effect, safe and environment-friendly.
Description
Technical field
The present invention relates to a kind of ternary displacement of reservoir oil extraction liquid emulsion splitter.
Background technology
Emulsion splitter in the market has certain effect for the oil-water emulsion of routine, but for the breakdown of emulsion of the oil in water emulsion of ternary displacement of reservoir oil extraction liquid and oily water separation too big effect not almost, and consumption is very big, and processing cost is also very high.Daqing oil field designing institute has carried out reaching the tacklings of key scientific and technical problems of more than ten years to this difficult problem, up till now also without any important breakthrough.Industrial accident has also appearred in the test of exploration institute of PetroChina Company Limited., adds dose and tries entirely from 6ppm to 50ppm, and profit does not only separate, also cause rp-emulsification, oil-containing pollutes whole water treatment system up to 70,000 to 80,000 ppm in the production water, and the necrosis of thousands of mouth pressure table and water injection well are blocked.
Summary of the invention
The object of the present invention is to provide that a kind of de-emulsification speed is fast, oil-water separation good, the ternary displacement of reservoir oil extraction liquid emulsion splitter of safety and environmental protection.
Ternary displacement of reservoir oil extraction liquid emulsion splitter of the present invention, its preparation method is as follows:
1) raw material is prepared:
Weight percent is 10---13% modified phenolic resins, described modified phenolic resins be for to introduce alkyl chain at the macromolecular chain of resol,
Weight percent is 17---maleic anhydride-epoxy propane copolymer of 19%,
Weight percent is 4.5---6% polyether glycol,
Weight percent is 1.8---4.5% ethylene glycol monobutyl ether,
Surplus is the aromatic solvent of safe environment protection type;
2) with 3/10ths to 7/20ths described aromatic solvent join in the mixing tank, open whipping appts then;
3) whole described modified phenolic resinss are joined in the mixing tank, continue to stir, it is dissolved fully;
4) whole described maleic anhydrides-epoxy propane copolymer is added in the mixing tank, continue to stir, it is dissolved fully;
5) polyether glycol is added in the mixing tank, continue to stir, keep jar interior temperature more than 15 ℃ simultaneously;
6) add whole described ethylene glycol monobutyl ethers, continue to stir;
7) remaining described aromatic solvent is added in the jar, continues to stir 25---35 minutes, namely get ternary displacement of reservoir oil extraction liquid emulsion splitter.
Ternary displacement of reservoir oil extraction liquid emulsion splitter of the present invention, described raw material is prepared as follows:
Weight percent is 11.2---12% modified phenolic resins,
Weight percent is 17.8---maleic anhydride-epoxy propane copolymer of 18.5%,
Weight percent is 4.8---5.5% polyether glycol,
Weight percent is 2---3% ethylene glycol monobutyl ether,
Surplus is the aromatic solvent of safe environment protection type;
Keep jar interior temperature 20 in the described step 5)---30 ℃.
Ternary displacement of reservoir oil extraction liquid emulsion splitter of the present invention, described step 2) in 1/3rd described aromatic solvent is joined in the mixing tank.
Ternary displacement of reservoir oil extraction liquid emulsion splitter of the present invention, component modification resol has very strong lipophilicity, and oil soluble is fabulous, and velocity of diffusion is very fast in oil, can move to the water-oil interface of oil in water emulsion in the shortest time and brings into play demulsification.Good lipophilic group propylene oxide in the component epoxy propane polymkeric substance, the hydrolysis maleic anhydride also has fine hydrophilic radical maleic anhydride, therefore except having demulsification, can also link together the trickle oil particles that is dispersed in the water, become big oil droplet, oil is separated from water as early as possible.The component polyether glycol is mainly used in strengthening oil-water separation, makes that oil-containing drops to minimum in the water after the separation.The component ethylene glycol monobutyl ether mainly is to improve the solute effect of each component in solvent as stablizer, adjusts density and pH value, guarantees the long-term stability of product, and it is not sunk to the bottom, and is not stratified.Component aromatic solvent flash-point is not inflammable and explosive hazardous substance more than 68 degrees centigrade, and is extremely water insoluble, so can not cause water to pollute.So ternary displacement of reservoir oil extraction liquid emulsion splitter of the present invention has that de-emulsification speed water quality fast, after separating is good, the advantage of safety and environmental protection, and owing to be the oil soluble product, plays a role from oil phase one side, compares with water-soluble products in the market, consumption is little; And because be the oil soluble product, rest in the oil, can stop second emulsifying, also can not cause negative impact to water quality. always
Below the specific embodiment of the present invention is described in further detail; Following examples are used for explanation the present invention, but are not used for limiting the scope of the invention.
Embodiment
Embodiment 1
Ternary displacement of reservoir oil extraction liquid emulsion splitter of the present invention, its preparation method is as follows:
1) raw material is prepared:
Weight percent is 10% modified phenolic resins, and modified phenolic resins is for to introduce alkyl chain at the macromolecular chain of resol,
Weight percent is maleic anhydride-epoxy propane copolymer of 19%,
Weight percent is 4.5% polyether glycol,
Weight percent is 1.8% ethylene glycol monobutyl ether,
Surplus is the aromatic solvent of safe environment protection type;
2) 1/3rd or 3/10ths aromatic solvent is joined in the mixing tank, open whipping appts then;
3) whole modified phenolic resinss are joined in the mixing tank, continue to stir, it is dissolved fully;
4) whole maleic anhydrides-epoxy propane copolymer is added in the mixing tank, continue to stir, it is dissolved fully;
5) polyether glycol is added in the mixing tank, continue to stir, keep jar interior temperature more than 15 ℃ simultaneously;
6) add whole ethylene glycol monobutyl ethers, continue to stir;
7) will remain aromatic solvent and add in the jar, and continue to stir 30 minutes, namely get ternary displacement of reservoir oil extraction liquid emulsion splitter.
Embodiment 2
Ternary displacement of reservoir oil extraction liquid emulsion splitter of the present invention, its preparation method is as follows:
1) raw material is prepared:
Weight percent is 12% modified phenolic resins, and modified phenolic resins is for to introduce alkyl chain at the macromolecular chain of resol,
Weight percent is maleic anhydride-epoxy propane copolymer of 18%,
Weight percent is 5% polyether glycol,
Weight percent is 3% ethylene glycol monobutyl ether,
Surplus is the aromatic solvent of safe environment protection type;
2) 1/3rd or 7/20ths aromatic solvent is joined in the mixing tank, open whipping appts then;
3) whole modified phenolic resinss are joined in the mixing tank, continue to stir, it is dissolved fully;
4) whole maleic anhydrides-epoxy propane copolymer is added in the mixing tank, continue to stir, it is dissolved fully;
5) polyether glycol is added in the mixing tank, continues to stir, keep jar interior temperature 20 simultaneously---30 ℃;
6) add whole ethylene glycol monobutyl ethers, continue to stir;
7) will remain aromatic solvent and add in the jar, and continue to stir 25---35 minutes, namely get ternary displacement of reservoir oil extraction liquid emulsion splitter.
Embodiment 3
Ternary displacement of reservoir oil extraction liquid emulsion splitter of the present invention, its preparation method is as follows:
1) raw material is prepared:
Weight percent is 13% modified phenolic resins, and modified phenolic resins is for to introduce alkyl chain at the macromolecular chain of resol,
Weight percent is maleic anhydride-epoxy propane copolymer of 17%,
Weight percent is 6% polyether glycol,
Weight percent is 4.5% ethylene glycol monobutyl ether,
Surplus is the aromatic solvent of safe environment protection type;
2) 1/3rd aromatic solvent is joined in the mixing tank, open whipping appts then;
3) whole modified phenolic resinss are joined in the mixing tank, continue to stir, it is dissolved fully;
4) whole maleic anhydrides-epoxy propane copolymer is added in the mixing tank, continue to stir, it is dissolved fully;
5) polyether glycol is added in the mixing tank, continues to stir, keep jar interior temperature 20 simultaneously---30 ℃;
6) add whole ethylene glycol monobutyl ethers, continue to stir;
7) aromatic solvent adds in the jar, continues to stir 30 minutes, namely gets ternary displacement of reservoir oil extraction liquid emulsion splitter.
Domestic emulsion splitter validity period all is 12 months at present, and the validity period of this product can be more than 36 months.
If at present domestic emulsion splitter flash-point is more than 20 degrees centigrade, then zero pour can only reach subzero 10 degrees centigrade, and the flash-point of this product can reach more than 70 degrees centigrade, and zero pour can be less than subzero 30 degree, and the utmost point is not soluted in water, and belongs to the safe environment protection type product.
When using ternary displacement of reservoir oil extraction liquid emulsion splitter of the present invention, temperature is more high, and the residence time can be more short, but minimum temperature must be more than the zero pour of crude oil.
Claims (3)
1. ternary displacement of reservoir oil extraction liquid emulsion splitter, it is characterized in that: its preparation method is as follows:
1) raw material is prepared:
Weight percent is 10---13% modified phenolic resins, described modified phenolic resins be for to introduce alkyl chain at the macromolecular chain of resol,
Weight percent is 17---maleic anhydride-epoxy propane copolymer of 19%,
Weight percent is 4.5---6% polyether glycol,
Weight percent is 1.8---4.5% ethylene glycol monobutyl ether,
Surplus is the aromatic solvent of safe environment protection type;
2) 3/10ths to 7/20ths described aromatic solvent is joined in the mixing tank, open whipping appts then;
3) whole described modified phenolic resinss are joined in the mixing tank, continue to stir, it is dissolved fully;
4) whole described maleic anhydrides-epoxy propane copolymer is added in the mixing tank, continue to stir, it is dissolved fully;
5) polyether glycol is added in the mixing tank, continue to stir, keep jar interior temperature more than 15 ℃ simultaneously;
6) add whole described ethylene glycol monobutyl ethers, continue to stir;
7) remaining described aromatic solvent is added in the jar, continues to stir 25---35 minutes, namely get ternary displacement of reservoir oil extraction liquid emulsion splitter.
2. ternary displacement of reservoir oil extraction liquid emulsion splitter according to claim 1 is characterized in that: described raw material is prepared as follows:
Weight percent is 11.2---12% modified phenolic resins,
Weight percent is 17.8---maleic anhydride-epoxy propane copolymer of 18.5%,
Weight percent is 4.8---5.5% polyether glycol,
Weight percent is 2---3% ethylene glycol monobutyl ether,
Surplus is the aromatic solvent of safe environment protection type;
Keep jar interior temperature 20 in the described step 5)---30 ℃.
3. ternary displacement of reservoir oil extraction liquid emulsion splitter according to claim 2 is characterized in that: described step 2) 1/3rd described aromatic solvent is joined in the mixing tank.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310304539.1A CN103333712B (en) | 2013-07-19 | 2013-07-19 | Ternary oil displacement Produced Liquid demulsifier |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310304539.1A CN103333712B (en) | 2013-07-19 | 2013-07-19 | Ternary oil displacement Produced Liquid demulsifier |
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| CN103333712A true CN103333712A (en) | 2013-10-02 |
| CN103333712B CN103333712B (en) | 2018-04-10 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110467942A (en) * | 2019-07-30 | 2019-11-19 | 滨州学院 | A kind of preparation method of demulsifier for oil fields |
| CN115725321A (en) * | 2022-11-25 | 2023-03-03 | 中海油(天津)油田化工有限公司 | Compound demulsifier for heavy oil field and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4502977A (en) * | 1983-05-02 | 1985-03-05 | Petrolite Corporation | Demulsifier composition and method of use thereof |
| CN1869169A (en) * | 2002-06-11 | 2006-11-29 | Oryxe能源国际公司 | Method for producing diesel fuels comprising additive |
| CN101352666A (en) * | 2007-07-26 | 2009-01-28 | 中国石油化工股份有限公司 | Compound demulsifying agent and method of use thereof |
-
2013
- 2013-07-19 CN CN201310304539.1A patent/CN103333712B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4502977A (en) * | 1983-05-02 | 1985-03-05 | Petrolite Corporation | Demulsifier composition and method of use thereof |
| CN1869169A (en) * | 2002-06-11 | 2006-11-29 | Oryxe能源国际公司 | Method for producing diesel fuels comprising additive |
| CN101352666A (en) * | 2007-07-26 | 2009-01-28 | 中国石油化工股份有限公司 | Compound demulsifying agent and method of use thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110467942A (en) * | 2019-07-30 | 2019-11-19 | 滨州学院 | A kind of preparation method of demulsifier for oil fields |
| CN115725321A (en) * | 2022-11-25 | 2023-03-03 | 中海油(天津)油田化工有限公司 | Compound demulsifier for heavy oil field and preparation method thereof |
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| CN103333712B (en) | 2018-04-10 |
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