CN112159679A - Demulsifier for dehydrating foam-containing crude oil and preparation method thereof - Google Patents
Demulsifier for dehydrating foam-containing crude oil and preparation method thereof Download PDFInfo
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- CN112159679A CN112159679A CN202011127169.5A CN202011127169A CN112159679A CN 112159679 A CN112159679 A CN 112159679A CN 202011127169 A CN202011127169 A CN 202011127169A CN 112159679 A CN112159679 A CN 112159679A
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- demulsifier
- crude oil
- foam
- dehydrating
- solvent
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- 239000010779 crude oil Substances 0.000 title claims abstract description 76
- 239000006260 foam Substances 0.000 title claims abstract description 58
- 238000002360 preparation method Methods 0.000 title abstract description 8
- 229920002503 polyoxyethylene-polyoxypropylene Polymers 0.000 claims abstract description 34
- 239000002904 solvent Substances 0.000 claims abstract description 31
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 30
- 229920000570 polyether Polymers 0.000 claims abstract description 30
- 239000000203 mixture Substances 0.000 claims abstract description 19
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 18
- -1 glycol ether compound Chemical class 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 10
- 238000004321 preservation Methods 0.000 claims abstract description 8
- 239000002994 raw material Substances 0.000 claims abstract description 5
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 45
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- VBICKXHEKHSIBG-UHFFFAOYSA-N 1-monostearoylglycerol Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC(O)CO VBICKXHEKHSIBG-UHFFFAOYSA-N 0.000 claims description 12
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 10
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 claims description 9
- ZNQVEEAIQZEUHB-UHFFFAOYSA-N 2-ethoxyethanol Chemical compound CCOCCO ZNQVEEAIQZEUHB-UHFFFAOYSA-N 0.000 claims description 6
- YEYKMVJDLWJFOA-UHFFFAOYSA-N 2-propoxyethanol Chemical compound CCCOCCO YEYKMVJDLWJFOA-UHFFFAOYSA-N 0.000 claims description 6
- 229940075507 glyceryl monostearate Drugs 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 239000001788 mono and diglycerides of fatty acids Substances 0.000 claims description 6
- STCOOQWBFONSKY-UHFFFAOYSA-N tributyl phosphate Chemical compound CCCCOP(=O)(OCCCC)OCCCC STCOOQWBFONSKY-UHFFFAOYSA-N 0.000 claims description 6
- SBASXUCJHJRPEV-UHFFFAOYSA-N 2-(2-methoxyethoxy)ethanol Chemical compound COCCOCCO SBASXUCJHJRPEV-UHFFFAOYSA-N 0.000 claims description 4
- 229920002545 silicone oil Polymers 0.000 claims description 4
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims 1
- 230000018044 dehydration Effects 0.000 abstract description 20
- 238000006297 dehydration reaction Methods 0.000 abstract description 20
- 230000000694 effects Effects 0.000 abstract description 11
- 238000013329 compounding Methods 0.000 abstract description 2
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical class OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 abstract description 2
- RBNPOMFGQQGHHO-UHFFFAOYSA-N glyceric acid Chemical compound OCC(O)C(O)=O RBNPOMFGQQGHHO-UHFFFAOYSA-N 0.000 description 8
- 239000003921 oil Substances 0.000 description 7
- 238000005457 optimization Methods 0.000 description 6
- 239000000243 solution Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- AJZDHLHTTJRNQJ-UHFFFAOYSA-N 3-[4-(aminomethyl)-6-(trifluoromethyl)pyridin-2-yl]oxy-N-[2-(tetrazol-1-yl)ethyl]benzamide Chemical compound N1(N=NN=C1)CCNC(C1=CC(=CC=C1)OC1=NC(=CC(=C1)CN)C(F)(F)F)=O AJZDHLHTTJRNQJ-UHFFFAOYSA-N 0.000 description 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G33/00—Dewatering or demulsification of hydrocarbon oils
- C10G33/04—Dewatering or demulsification of hydrocarbon oils with chemical means
Landscapes
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The invention relates to the technical field of crude oil demulsifier preparation, in particular to a demulsifier for dehydrating foam-containing crude oil and a preparation method thereof, wherein the raw materials of the demulsifier comprise polyoxyethylene polyoxypropylene block polyether, glycol ether compounds, a defoaming agent and a solvent, and the demulsifier is obtained by the following method: after a glycol ether compound, a defoaming agent and a solvent are sequentially added into the heated polyoxyethylene polyoxypropylene block polyether, the mixture is stirred to be completely dissolved under the condition of heat preservation, and the demulsifier for dehydrating the crude oil containing the foam is obtained. The demulsifier for dehydrating the crude oil containing the foam is prepared by compounding a plurality of components, has strong adaptability, high dehydration speed and high demulsification efficiency, has a dehydration rate of more than 95 percent within 2 hours for the demulsification and dehydration effect of the crude oil containing the foam, has better demulsification and dehydration performance, and can effectively solve the problem of poor demulsification effect of the conventional crude oil demulsifier.
Description
Technical Field
The invention relates to the technical field of preparation of a crude oil demulsifier, in particular to a demulsifier for dehydrating crude oil containing foam and a preparation method thereof.
Background
In the process of extracting, collecting and transporting crude oil, the crude oil is influenced by the surrounding environmental factors of oil extraction or uses other chemical auxiliary agents to generate chemical reaction, or the crude oil contains substances easy to foam, and the like to cause foaming, so that the foam-containing crude oil has a plurality of hazards in dehydration: the foam is stable during oil exploitation, so that the foam is not separated in time, or the production capacity of a separator needs to be reduced in order to maintain the separation effect; foam can cause air bubble compression, and the efficiency of the pump is seriously influenced; the increase of the volume of the crude oil, inaccurate measurement and sharp reduction of the treatment capacity of degassing, dehydrating, gathering and transporting and processing devices are caused; fourthly, the construction efficiency is seriously influenced, and the whole working process is slowed down, so that the cost is increased; the light oil is difficult to separate, and the quality of the dehydrated crude oil and the dehydrated sewage are affected.
At present, crude oil demulsifiers at home and abroad are various in variety, most of the demulsifiers are nonionic demulsifiers, and the molecular composition of the demulsifiers is mainly a copolymer of ethylene oxide and propylene oxide, so that the demulsification effect is poor.
Disclosure of Invention
The invention provides a demulsifier for dehydrating crude oil containing foam and a preparation method thereof, overcomes the defects of the prior art, and can effectively solve the problem of poor demulsification effect of the conventional crude oil demulsifier.
One of the technical schemes of the invention is realized by the following measures: the demulsifier for dewatering crude oil containing foam includes polyoxyethylene polyoxypropylene block polyether 10-60 wt%, glycol ether compound 1-15 wt%, defoaming agent 5-30 wt% and solvent for the rest.
The following is a further optimization or/and improvement of one of the above-mentioned technical solutions of the invention:
the demulsifier for dehydrating the crude oil containing the foam comprises 30 to 40 weight percent of polyoxyethylene polyoxypropylene block polyether, 10 to 15 weight percent of glycol ether compound, 10 to 20 weight percent of defoaming agent and the balance of solvent.
The demulsifier for dehydrating the crude oil containing the foam is obtained by the following method: and (2) sequentially adding the required amount of glycol ether compound, defoaming agent and solvent into the heated polyoxyethylene polyoxypropylene block polyether, and stirring the mixture under the condition of heat preservation until the mixture is completely dissolved to obtain the demulsifier for dehydrating the crude oil containing foam.
The glycol ether compound is one of ethylene glycol monomethyl ether, ethylene glycol ethyl ether, ethylene glycol propyl ether and diethylene glycol methyl ether.
The defoaming agent is one of polyoxyethylene polyoxypropylene glycerol ether, glyceryl monostearate, tributyl phosphate, propylene glycol and polyether modified silicone oil.
The solvent comprises methanol and water, and the weight ratio of the methanol to the water is 1: 1-2.
The temperature of the heating and the heat preservation is 30 ℃ to 60 ℃.
The second technical scheme of the invention is realized by the following measures: the preparation method of the demulsifier for dehydrating the crude oil containing the foam comprises the following steps: and (2) sequentially adding the required amount of glycol ether compound, defoaming agent and solvent into the heated polyoxyethylene polyoxypropylene block polyether, and stirring the mixture under the condition of heat preservation until the mixture is completely dissolved to obtain the demulsifier for dehydrating the crude oil containing foam.
The following is further optimization or/and improvement of the second technical scheme of the invention:
the glycol ether compound is one of ethylene glycol monomethyl ether, ethylene glycol ethyl ether, ethylene glycol propyl ether and diethylene glycol methyl ether.
The defoaming agent is one of polyoxyethylene polyoxypropylene glycerol ether, glyceryl monostearate, tributyl phosphate, propylene glycol and polyether modified silicone oil.
The solvent comprises methanol and water, and the weight ratio of the methanol to the water is 1: 1-2.
The temperature of the heating and the heat preservation is 30 ℃ to 60 ℃.
The demulsifier for dehydrating the crude oil containing the foam is prepared by compounding a plurality of components, has strong adaptability, high dehydration speed and high demulsification efficiency, has a dehydration rate of more than 95 percent within 2 hours for the demulsification and dehydration effect of the crude oil containing the foam, has better demulsification and dehydration performance, and can effectively solve the problem of poor demulsification effect of the conventional crude oil demulsifier.
Detailed Description
The present invention is not limited by the following examples, and specific embodiments may be determined according to the technical solutions and practical situations of the present invention. The various chemical reagents and chemical articles mentioned in the invention are all the chemical reagents and chemical articles which are well known and commonly used in the prior art, unless otherwise specified; the percentages in the invention are mass percentages unless otherwise specified; the solution in the present invention is an aqueous solution in which the solvent is water, for example, a hydrochloric acid solution is an aqueous hydrochloric acid solution, unless otherwise specified; the normal temperature and room temperature in the present invention generally mean a temperature of 15 ℃ to 25 ℃, and are generally defined as 25 ℃.
The invention is further described below with reference to the following examples:
example 1: the demulsifier for dehydrating the crude oil containing the foam comprises 10 to 60 weight percent of polyoxyethylene polyoxypropylene block polyether, 1 to 15 weight percent of glycol ether compound, 5 to 30 weight percent of defoaming agent and the balance of solvent.
The polyoxyethylene polyoxypropylene block polyether is a common crude oil demulsifier, and can adopt the polyoxyethylene polyoxypropylene block polyether with a model of KXD provided by Clarityike Australian Experimental Natural gas technology GmbH or the polyoxyethylene polyoxypropylene block polyether provided by other manufacturers; the crude oil demulsifier can also be replaced in practical application according to the properties of crude oil.
Example 2: the demulsifier for dehydrating the crude oil containing the foam comprises 30 to 40 weight percent of polyoxyethylene polyoxypropylene block polyether, 10 to 15 weight percent of glycol ether compound, 10 to 20 weight percent of defoaming agent and the balance of solvent.
Example 3: the demulsifier for dehydrating the crude oil containing the foam comprises 30 percent or 40 percent of polyoxyethylene polyoxypropylene block polyether, 10 percent or 15 percent of glycol ether compound, 10 percent or 20 percent of defoaming agent and the balance of solvent according to weight percentage.
Example 4: the demulsifier for dehydrating the crude oil containing the foam is obtained according to the following steps: and (2) sequentially adding the required amount of glycol ether compound, defoaming agent and solvent into the heated polyoxyethylene polyoxypropylene block polyether, and stirring the mixture under the condition of heat preservation until the mixture is completely dissolved to obtain the demulsifier for dehydrating the crude oil containing foam.
Example 5: in the optimization of the above embodiment, the glycol ether compound is one of ethylene glycol monomethyl ether, ethylene glycol ethyl ether, ethylene glycol propyl ether and diethylene glycol methyl ether.
Example 6: as optimization of the above embodiment, the defoaming agent is one of polyoxyethylene polyoxypropylene glycerol ether, glyceryl monostearate, tributyl phosphate, propylene glycol and polyether modified silicone oil.
Example 7: as an optimization of the above embodiment, the solvent comprises methanol and water in a weight ratio of 1:1 to 2.
Example 8: as an optimization of the above embodiment, the temperature of heating and holding is 30 ℃ to 60 ℃.
Example 9: the demulsifier for dehydrating the foam-containing crude oil comprises 30 percent of polyoxyethylene polyoxypropylene block polyether, 10 percent of ethylene glycol monomethyl ether, 10 percent of polyoxyethylene polyoxypropylene glycerol ether and the balance of solvent by weight percent, and is prepared by the following steps: adding ethylene glycol monomethyl ether, polyoxyethylene polyoxypropylene glycerol ether and a solvent into polyoxyethylene polyoxypropylene block polyether with the required amount, which is heated to 30 ℃, in sequence, stirring the mixture until the ethylene glycol monomethyl ether, the polyoxyethylene polyoxypropylene glycerol ether and the solvent are completely dissolved at the temperature of 30 ℃, and obtaining the demulsifier for dehydrating the crude oil containing foam, wherein the solvent comprises methanol and water, and the weight ratio of the methanol to the water is 1:1.
Example 10: the demulsifier for dehydrating the crude oil containing the foam comprises the following raw materials, by weight, 35% of polyoxyethylene polyoxypropylene block polyether, 12% of ethylene glycol ethyl ether, 15% of glyceryl monostearate and the balance of a solvent, and is prepared by the following steps: adding the required amount of ethylene glycol ethyl ether, glyceryl monostearate and solvent into the required amount of polyoxyethylene polyoxypropylene block polyether which is heated to 45 ℃ in sequence, stirring the mixture at the temperature of 45 ℃ until the mixture is completely dissolved, and obtaining the demulsifier for dehydrating the crude oil containing foam, wherein the solvent comprises methanol and water, and the weight ratio of the methanol to the water is 1: 1.5.
Example 11: the demulsifier for dehydrating the crude oil containing the foam comprises the following raw materials, by weight, 40% of polyoxyethylene polyoxypropylene block polyether, 15% of ethylene glycol propyl ether, 20% of tributyl phosphate and the balance of a solvent, and is prepared by the following steps: adding ethylene glycol propyl ether, tributyl phosphate and a solvent into polyoxyethylene polyoxypropylene block polyether with the required amount, which is heated to 60 ℃, in sequence, stirring the mixture until the mixture is completely dissolved at the temperature of 60 ℃, and obtaining the demulsifier for dehydrating the crude oil containing foam, wherein the solvent comprises methanol and water, and the weight ratio of the methanol to the water is 1: 2.
Example 12: the demulsifier for dehydrating the crude oil containing the foam is obtained by the following method: adding 30 weight percent of polyoxyethylene polyoxypropylene block polyether into a reactor, heating the reactor to 50 ℃, then sequentially adding 10 weight percent of ethylene glycol monomethyl ether, 10 weight percent of polyoxyethylene polyoxypropylene glycerol ether and 50 weight percent of solvent (the weight ratio of methanol to water is 1: 1) into the reactor, preserving heat at the temperature of 50 ℃, and stirring until the mixture is completely dissolved to obtain the demulsifier for dehydrating the crude oil containing foam.
Example 13: the demulsifier for dehydrating the crude oil containing the foam is obtained by the following method: adding 35 percent by weight of polyoxyethylene polyoxypropylene block polyether into a reactor, heating the reactor to 50 ℃, then sequentially adding 10 percent by weight of ethylene glycol monomethyl ether, 10 percent by weight of polyoxyethylene polyoxypropylene glycerol ether and 45 percent by weight of solvent (the weight ratio of methanol to water is 1: 1) into the reactor, preserving heat at the temperature of 50 ℃, and stirring until the mixture is completely dissolved to obtain the demulsifier for dehydrating the crude oil containing foam.
The following is the examination of the demulsification performance of the demulsifier for dehydrating the crude oil containing foam
The test method comprises the following steps: in the middle and later stages of oil field development, because a multi-medium gas-drive oil extraction process is adopted, crude oil contains a large amount of foam, so that crude oil dehydration is difficult, the test takes the foam-containing crude oil in a certain thickened oil block of a Clarity oil field as an example, the water content of the crude oil is 44%, the demulsifier for dehydrating the foam-containing crude oil obtained in the embodiment 12 and the embodiment 13 of the invention is adopted for carrying out demulsification performance test, and meanwhile, the conventional polyether crude oil demulsifier is adopted as a comparative example. The demulsifier for dehydrating the crude oil containing foam obtained in the examples 12 and 13 and the comparative example are added into the crude oil containing foam, so that the concentration of the demulsifier in the crude oil is 100mg/L, and a demulsification and dehydration test is carried out on the crude oil containing foam at a dehydration temperature of 80-85 ℃ according to SY/T5281-2000 & lt & gt crude oil demulsifier use performance detection method (bottle test method), wherein the oscillation method of a dehydration test bottle in the test adopts an artificial oscillation method.
And (3) test results: as can be seen from Table 1, compared with the existing polyether crude oil demulsifier, the demulsifier for dehydrating the foam-containing crude oil has the demulsification and dehydration effect of the demulsifier for dehydrating the foam-containing crude oil on the Clarithrome-containing crude oil, and has better demulsification and dehydration performances, wherein the dehydration rate of the demulsifier for dehydrating the foam-containing crude oil is more than 95% within 2 hours.
In conclusion, the demulsifier for dehydrating the crude oil containing the foam is compounded by a plurality of components, has strong adaptability, high dehydration speed and high demulsification efficiency, has a dehydration rate of more than 95 percent within 2 hours for the demulsification and dehydration effect of the crude oil containing the foam, has better demulsification and dehydration performance, and can effectively solve the problem of poor demulsification effect of the conventional crude oil demulsifier.
The technical characteristics form an embodiment of the invention, which has strong adaptability and implementation effect, and unnecessary technical characteristics can be increased or decreased according to actual needs to meet the requirements of different situations.
Claims (8)
1. The demulsifier for dewatering crude oil containing foam is characterized by that its raw material includes (by wt%) 10% -60% of polyoxyethylene polyoxypropylene block polyether, 1% -15% of glycol ether compound, 5% -30% of defoaming agent and the rest is solvent.
2. The demulsifier for dehydrating foam-containing crude oil according to claim 1, wherein the raw material comprises 30 to 40% by weight of polyoxyethylene polyoxypropylene block polyether, 10 to 15% by weight of glycol ether compound, 10 to 20% by weight of defoaming agent, and the balance of solvent.
3. The demulsifier for dehydrating foam-containing crude oil according to claim 1 or 2, which is obtained by the following method: and (2) sequentially adding the required amount of glycol ether compound, defoaming agent and solvent into the heated polyoxyethylene polyoxypropylene block polyether, and stirring the mixture under the condition of heat preservation until the mixture is completely dissolved to obtain the demulsifier for dehydrating the crude oil containing foam.
4. The demulsifier for dehydrating foam-containing crude oil according to claim 1, 2 or 3, wherein the glycol ether compound is one of ethylene glycol monomethyl ether, ethylene glycol ethyl ether, ethylene glycol propyl ether and diethylene glycol methyl ether.
5. The demulsifier for dehydrating foam-containing crude oil according to claim 1, 2, 3 or 4, wherein the defoaming agent is one of polyoxyethylene polyoxypropylene glyceryl ether, glyceryl monostearate, tributyl phosphate, propylene glycol and polyether-modified silicone oil.
6. The demulsifier for dehydrating foam-containing crude oil according to claim 1, 2, 3, 4 or 5, wherein the solvent comprises methanol and water at a weight ratio of methanol to water of 1:1 to 2.
7. The demulsifier for dehydrating foam-containing crude oil according to claim 1, 2, 3, 4, 5 or 6, wherein the temperature for heating and holding the temperature is from 30 ℃ to 60 ℃.
8. A method for preparing the demulsifier for dehydrating foam-containing crude oil according to claim 1, 2, 4, 5, 6 or 7, which is characterized by comprising the following steps: and (2) sequentially adding the required amount of glycol ether compound, defoaming agent and solvent into the heated polyoxyethylene polyoxypropylene block polyether, and stirring the mixture under the condition of heat preservation until the mixture is completely dissolved to obtain the demulsifier for dehydrating the crude oil containing foam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011127169.5A CN112159679A (en) | 2020-10-20 | 2020-10-20 | Demulsifier for dehydrating foam-containing crude oil and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011127169.5A CN112159679A (en) | 2020-10-20 | 2020-10-20 | Demulsifier for dehydrating foam-containing crude oil and preparation method thereof |
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| Publication Number | Publication Date |
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| CN112159679A true CN112159679A (en) | 2021-01-01 |
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| CN202011127169.5A Pending CN112159679A (en) | 2020-10-20 | 2020-10-20 | Demulsifier for dehydrating foam-containing crude oil and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114736707A (en) * | 2021-01-07 | 2022-07-12 | 中国石油天然气集团有限公司 | Composite polyether type demulsifier and preparation method thereof |
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| CN106479559A (en) * | 2016-09-27 | 2017-03-08 | 中国石油天然气股份有限公司 | Crude oil demulsifier containing organic silicon and preparation method thereof |
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| CN210506223U (en) * | 2019-09-18 | 2020-05-12 | 广州绿森环保科技有限公司 | Dosing device for crude oil dehydration demulsifier |
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2020
- 2020-10-20 CN CN202011127169.5A patent/CN112159679A/en active Pending
Patent Citations (5)
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| CN101544903A (en) * | 2009-03-27 | 2009-09-30 | 中国石油大学(华东) | Crude oil demulsifier and preparation method thereof |
| CN102492460A (en) * | 2011-12-21 | 2012-06-13 | 孙安顺 | Preparation method and application of crude oil low-temperature demulsifier |
| CN106479559A (en) * | 2016-09-27 | 2017-03-08 | 中国石油天然气股份有限公司 | Crude oil demulsifier containing organic silicon and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114736707A (en) * | 2021-01-07 | 2022-07-12 | 中国石油天然气集团有限公司 | Composite polyether type demulsifier and preparation method thereof |
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Application publication date: 20210101 |