CN109943360A - A kind of Compositional type heavy oil low-temperature demulsifier - Google Patents
A kind of Compositional type heavy oil low-temperature demulsifier Download PDFInfo
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Abstract
The present invention provides a kind of Compositional type heavy oil low-temperature demulsifier, the parts by weight of raw material components and the raw material components are as follows: A, polyethylene polyamine polyoxyethylene polyoxypropylene ether: 10~20 parts by weight；B, phenolic resin polyoxyethylene polyoxypropylene ether: 30~45 parts by weight；C, multi-alpha ethylene polyamines polyoxyethylene polyoxypropylene ether: 5~15 parts by weight；D, small organic molecule auxiliary agent: 10~20 parts by weight；E, solid particles surface modifying agent: 3~10 parts by weight；F: solvent: 20~30 parts by weight.The synergistic effect between demulsifier is utilized in composite emulsion breaker of the present invention, has the advantages that dosage is few, demulsification temperature is low, and suitable for viscosity in the high viscous oil of 10000mPa.s or more, aqueous after heavy oil dehydration to be lower than 0.8%, sewage with oil is lower than 1500ppm.
Description
Technical field
The invention belongs to petroleum industry chemicals technical fields, more particularly, to a kind of viscous crude Produced Liquid low-temperature oil moisture
From high-efficient demulsifier formula and preparation method.
Background technique
Viscous crude, that is, high viscosity heavy crude, is a kind of more hydro carbons complex mixtures rich in resin and asphalt, and feature is
Density is high, viscosity is big, poor fluidity.In recent years, China has accelerated the exploitation of viscous crude, but since the outstanding feature of viscous crude is to contain
Asphalitine, colloid are more, and asphalitine and colloid are the natural emulsifiers of crude oil, can reduce oil water interfacial tension, are formed secured
Adsorbed film, so that emulsion is become sufficiently stable.Meanwhile during thickened oil recovery, various oil recovery auxiliary agents, grease processing
The oil-water emulsion characteristic of chemical agent ringing in whole system, Produced Liquid is increasingly sophisticated, and chemical property also has occurred very
Big variation.Watched outside Produced Liquid, substantially by a small amount of W/O emulsion and buff O/W emulsion two types simultaneously
It deposits or increasingly complex multiple emulsion, rag layer thickens in Produced Liquid.All of these factors taken together results in viscous crude Produced Liquid
Stability is strong, and water-oil separating is difficult, and oil-containing is not up to standard in the crude oil water containing and sewage after separation, brings weight to oil field production
It is big to influence.It since viscous crude water content is exceeded, causes in crude oil that salt content and tenor be not also up to standard, locates in advance to oil plant crude oil
Reason brings very big difficulty.Therefore, viscous oil emulsion breaking emulsion and dewatering problem and oil water separation process under the conditions of High water cut generates
High oily wastewater problem become each oil field and oil plant problem urgently to be resolved.
Currently, domestic traditional heavy oil dehydration method mainly has gravitational settling dehydration, chemical demulsifier dehydration, electric dehydration
Deng.In recent years, there is significant progress to the research of thick oil demulsifier, new and effective demulsifier is continuously developed out.It is broken
Emulsion is the biggish a kind of chemicals of usage amount in petroleum industry, is mainly used for the oil field ground production defeated process of sum aggregate.Currently, state
It is inside and outside that two methods of thermo-chemical demulsification and electrochemistry demulsification are mainly used to thick oil emulsion breaking.Wherein electrochemistry demulsification be in electric field and
Breaking emulsion and dewatering is carried out under the collective effect of a small amount of demulsifier.This method has the advantages that demulsification is high-efficient, but its shortcoming is that
Equipment investment is high, and feedstock oil enter equipment before water must be dropped to and (usually first carry out thermo-chemical demulsification) to a certain degree,
Otherwise it is unable to get stable electric field.Therefore, thermo-chemical demulsification tool during viscous oil emulsion is demulsified plays a very important role.
Thermo-chemical demulsification is that a certain amount of demulsifier is added in crude oil emulsion, to change the interfacial property of emulsion, reaches oil
The purpose of water separation.
Demulsifier in the prior art is chiefly used in the low-temperature demulsification dehydration of crude oil, such as Chinese patent literature
CN101029252A discloses a kind of cryogenic dewatering demulsifier of crude-oil extract, and raw material components include: polyamines class polyoxypropylene
The close ether of polyoxyethylene, alkyl phenolic resin polyoxyethylene polyoxypropylene ether, multi-alpha ethylene polyamines polyoxyethylene polyoxypropylene ether with
And surfactant, first alcohol and water.The low-temperature demulsifying agent is used for the demulsification of crude oil, water content after crude oil dehydration under cryogenic
Lower, oil content is relatively low in sewage, breaking emulsion and dewatering effect with higher.
But above-mentioned demulsifier in the prior art still has problems in that it is poor to the permeability of viscous crude, because
This is only applicable to the non-thick oil emulsion breaking under cryogenic conditions.And for viscous crude, due to its with density big, active component content
Height, therefore its emulsion is very stable, this causes demulsification temperature high, it will usually reach 90 DEG C or more.And there is diffusion speed in demulsifier
Degree is slow, and the poly- and difficult problem of water droplet, so that de-emulsification speed is slow, demulsifier usage amount is big, demulsification is poor, and there is oil
The high problem of viscous crude moisture content after water separation.
Summary of the invention
The invention solves the demulsifier of the prior art be not suitable for thick oil emulsion breaking, exist demulsification temperature it is excessively high, demulsification speed
The technical problem that degree is slow, demulsifier usage amount is big, demulsification is poor, the viscous crude moisture content after water-oil separating is high.And then provide one
Kind is suitable for the low-temperature demulsifying agent of thick oil emulsion breaking of the viscosity greater than 10000mPa.s.
The present invention solves the technical solution that above-mentioned technical problem uses are as follows:
A kind of Compositional type heavy oil low-temperature demulsifier, the raw material components of the Compositional type heavy oil low-temperature demulsifier and each original
Expect the parts by weight of component are as follows:
A, polyethylene polyamine polyoxyethylene polyoxypropylene ether: 10~20 parts by weight；
B, phenolic resin polyoxyethylene polyoxypropylene ether: 30~45 parts by weight；
C, multi-alpha ethylene polyamines polyoxyethylene polyoxypropylene ether: 5~15 parts by weight；
D, small organic molecule auxiliary agent: 10~20 parts by weight；
E, solid particles surface modifying agent: 3~10 parts by weight；
F: solvent: 20~30 parts by weight.
The parts by weight of the raw material components of the Compositional type heavy oil low-temperature demulsifier and each raw material components are as follows:
A, polyethylene polyamine polyoxyethylene polyoxypropylene ether: 10~15 parts by weight；
B, phenolic resin polyoxyethylene polyoxypropylene ether: 30~40 parts by weight；
C, multi-alpha ethylene polyamines polyoxyethylene polyoxypropylene ether: 10~15 parts by weight；
D, small organic molecule auxiliary agent: 15~20 parts by weight；
E, solid particles surface modifying agent: 5~10 parts by weight；
F: solvent: 20~30 parts by weight.
The parts by weight of the raw material components of the Compositional type heavy oil low-temperature demulsifier and each raw material components are as follows:
A, polyethylene polyamine polyoxyethylene polyoxypropylene ether: 10~20 parts by weight；
B, phenolic resin polyoxyethylene polyoxypropylene ether: 30~45 parts by weight；
C, multi-alpha ethylene polyamines polyoxyethylene polyoxypropylene ether: 5~10 parts by weight；
D, small organic molecule auxiliary agent: 15~20 parts by weight；
E, solid particles surface modifying agent: 3~8 parts by weight；
F: solvent: 25~30 parts by weight.
The parts by weight of the raw material components of the Compositional type heavy oil low-temperature demulsifier and each raw material components are as follows:
A, polyethylene polyamine polyoxyethylene polyoxypropylene ether: 10~15 parts by weight；
B, phenolic resin polyoxyethylene polyoxypropylene ether: 35~45 parts by weight；
C, multi-alpha ethylene polyamines polyoxyethylene polyoxypropylene ether: 10~15 parts by weight；
D, small organic molecule auxiliary agent: 10~15 parts by weight；
E, solid particles surface modifying agent: 5~10 parts by weight；
F: solvent: 20~30 parts by weight.
The small organic molecule auxiliary agent is methanol or ethyl alcohol or butyl.
The solvent is benzene or toluene or methanol or ethyl alcohol.
The solvent is benzene or toluene.
The solid particles surface modifying agent is cationic Gemini surfactants or anionic type Gemini surface surface
Activating agent.
The preparation method of the Compositional type heavy oil low-temperature demulsifier, comprising: more ethylene of specified weight part are more
Amine polyoxyethylene polyoxypropylene ether, phenolic resin polyoxyethylene polyoxypropylene ether, multi-alpha ethylene polyamines polyoxyethylene polyoxypropylene
Four kinds of raw materials of ether and solid particles surface modifying agent are proportionally added into reaction kettle, are warming up to 60~75 DEG C under agitation,
The small organic molecule auxiliary agent of specified weight part is added in temperature-rise period；
After temperature-rise period, continues to keep the temperature and stir 30~40 minutes, then stop heating, be cooled to room while stirring
The solvent is added by weight, and stirs 20~30 minutes for temperature, discharges to get the Compositional type heavy oil low-temperature demulsifier is arrived.
The viscosity of the viscous crude is greater than 10000mPa.s, and demulsification temperature is 60~80 DEG C, and the Compositional type viscous crude low temperature is broken
The dosage of emulsion is 50~150ppm.
The advantages of Compositional type heavy oil low-temperature demulsifier of the present invention, is:
Composite emulsion breaker of the present invention is using the synergistic effect between each component of demulsifier, by a variety of demulsifiers
Crosslinking compounding is carried out, and the small organic molecule auxiliary agent with fine osmotic effect is added, effectively improves the dehydration effect of viscous crude
Fruit reduces the oil content of abjection sewage；Simultaneously the auxiliary agent can effective dispersed bitumens matter, reduce the viscosity of viscous crude, it is especially suitable
Breaking emulsion and dewatering for viscous crude Produced Liquid.Demulsifier A in the present invention is the polyethers demulsifier that polyamines is initiator, is had de-
The features such as water speed is fast, demulsification temperature is low；Demulsifier B be using phenolic resin as the demulsifier of initiator, have it is stronger dissolution,
Diffusion, infiltration, viscosity reduction and other effects；Demulsifier C has very strong clear water effect, and the oil content of abjection water can be effectively reduced；It will
This three kinds of demulsifiers compound implementation in crude oil dehydration according to a certain percentage, have the advantages that dosage is few, demulsification temperature is low etc..
Fluorescence probe auxiliary agent in the present invention plays certain effect during thick oil emulsion breaking.Many organic solvents
Small molecule itself has certain polarity or has very strong solvability with unsaturated cyclic structure or to gum asphalt,
They can effectively change interface phase aromaticity or polar environment, have solubilization to asphalitine micelle, the demulsification to viscous crude
Effect improves, and 20~30% demulsification ability can be improved.The solid particles surface modifying agent can be effective
Change the surface nature of solid particle in viscous crude, to change the wetability of solid particle, reduces solid particle to crude oil in water
In solubilization, have the function of reverse demulsifier, thus reduce abjection water oil content.
It is broken using heavy oil low-temperature demulsifier prepared by the present invention suitable for viscosity in the high viscous oil of 10000mPa.s or more
Newborn temperature is 60~80 DEG C, and dosage is within the scope of 50~150ppm, and aqueous after heavy oil dehydration to be lower than 0.8%, sewage with oil is lower than
1500ppm。
Specific embodiment
Hereinafter, certain exemplary embodiments are simply just described.As one skilled in the art will recognize that
Like that, without departing from the spirit or scope of the present invention, described embodiment can be modified by various different modes.
Therefore, description is considered essentially illustrative rather than restrictive.
It should be mentioned that some exemplary embodiments are described as before exemplary embodiment is discussed in greater detail
The processing or method described as process.Although operations are described as the processing of sequence, many of these behaviour by process
Work can be implemented concurrently, concomitantly or simultaneously.In addition, the sequence of operations can be rearranged.When its operation
The processing can be terminated when completion, it is also possible to have the additional step for not including.The processing side of can correspond to
Method, function, regulation, subroutine, subprogram etc..
In following embodiment 1-5,1 parts by weight are 1kg.
Embodiment 1
Compositional type heavy oil low-temperature demulsifier described in the present embodiment the preparation method comprises the following steps: by the polyethylene polyamine of 13 parts by weight
Polyoxyethylene polyoxypropylene ether, phenolic resin polyoxyethylene polyoxypropylene ether, the multi-alpha ethylene of 14 parts by weight of 33 parts by weight are more
Four kinds of raw materials of amine polyoxyethylene polyoxypropylene ether and the solid particles surface modifying agent of 9 parts by weight are proportionally added into enamel reaction
Kettle is to slowly warm up to 60 DEG C, and the side Bian Shengwen is stirred, and the small organic molecule auxiliary agent of 18 parts by weight, this implementation are added in temperature-rise period
Small organic molecule auxiliary agent described in example is methanol, and the solid particles surface modifying agent is cationic Gemini surface-active
Agent；It is kept the temperature after being warming up to 60 DEG C at 60 DEG C and continues stirring 30 minutes, then stopped heating, cool down while stirring；It is cooled to room
The toluene of 22 parts by weight is added as solvent in Wen Hou, and stirring while adding, stirring 20 minutes, discharging is to get low to Compositional type viscous crude
Warm demulsifier A.
Embodiment 2
Compositional type heavy oil low-temperature demulsifier described in the present embodiment the preparation method comprises the following steps: by the polyethylene polyamine of 18 parts by weight
Polyoxyethylene polyoxypropylene ether, the phenolic resin polyoxyethylene polyoxypropylene ether of 43 parts by weight, 7 parts by weight multi-alpha ethylene polyamines
Four kinds of raw materials of polyoxyethylene polyoxypropylene ether and the solid particles surface modifying agent of 4 parts by weight are proportionally added into enamel reaction
Kettle is to slowly warm up to 70 DEG C, and the side Bian Shengwen is stirred, and the small organic molecule auxiliary agent of 15 parts by weight, this implementation are added in temperature-rise period
Small organic molecule auxiliary agent described in example is methanol, and the solid particles surface modifying agent is cationic Gemini surface-active
Agent；It is kept the temperature after being warming up to 70 DEG C at 70 DEG C and continues stirring after forty minutes, stopped heating, cool down, be cooled to room temperature while stirring,
The toluene of 27 parts by weight is added as solvent, stirring while adding, stirring 30 minutes, discharging is to get broken to Compositional type viscous crude low temperature
Emulsion B.
Embodiment 3
Compositional type heavy oil low-temperature demulsifier described in the present embodiment the preparation method comprises the following steps: by the polyethylene polyamine of 14 parts by weight
Polyoxyethylene polyoxypropylene ether, phenolic resin polyoxyethylene polyoxypropylene ether, the multi-alpha ethylene of 12 parts by weight of 40 parts by weight are more
Four kinds of raw materials of amine polyoxyethylene polyoxypropylene ether and the solid particles surface modifying agent of 9 parts by weight are proportionally added into enamel reaction
Kettle is to slowly warm up to 75 DEG C, and the side Bian Shengwen is stirred, and the small organic molecule auxiliary agent of 12 parts by weight, this implementation are added in temperature-rise period
Small organic molecule auxiliary agent described in example is methanol, and the solid particles surface modifying agent is cationic Gemini surface-active
Agent；After being kept the temperature after being warming up to 75 DEG C at 75 DEG C and continuing stirring 30 minutes, stops heating, cools down, be cooled to room temperature while stirring,
The toluene of 25 parts by weight is added as solvent, stirring while adding, stirring 20 minutes, discharging is to get broken to Compositional type viscous crude low temperature
Emulsion C.
Embodiment 4
Compositional type heavy oil low-temperature demulsifier described in the present embodiment the preparation method comprises the following steps: by the polyethylene polyamine of 12 parts by weight
Polyoxyethylene polyoxypropylene ether, phenolic resin polyoxyethylene polyoxypropylene ether, the multi-alpha ethylene of 15 parts by weight of 35 parts by weight are more
Four kinds of raw materials of amine polyoxyethylene polyoxypropylene ether and the solid particles surface modifying agent of 9 parts by weight are proportionally added into enamel reaction
Kettle is to slowly warm up to 60 DEG C, and the side Bian Shengwen is stirred, and the small organic molecule auxiliary agent of 16 parts by weight, this implementation are added in temperature-rise period
Small organic molecule auxiliary agent described in example is butyl, and the solid particles surface modifying agent is cationic Gemini table
Face activating agent；After being kept the temperature after being warming up to 60 DEG C at 60 DEG C and continuing stirring 30 minutes, stops heating, cool down while stirring, it is cooling
To room temperature, the toluene of 22 parts by weight is added as solvent, stirring while adding, stirring 20 minutes discharges to get Compositional type viscous crude is arrived
Low-temperature demulsifying agent D.
Embodiment 5
Compositional type heavy oil low-temperature demulsifier described in the present embodiment the preparation method comprises the following steps: by the polyethylene polyamine of 14 parts by weight
Polyoxyethylene polyoxypropylene ether, phenolic resin polyoxyethylene polyoxypropylene ether, the multi-alpha ethylene of 12 parts by weight of 40 parts by weight are more
Four kinds of raw materials of amine polyoxyethylene polyoxypropylene ether and the solid particles surface modifying agent of 9 parts by weight are proportionally added into enamel reaction
Kettle is to slowly warm up to 75 DEG C, and the side Bian Shengwen is stirred, and the small organic molecule auxiliary agent of 12 parts by weight, this implementation are added in temperature-rise period
Small organic molecule auxiliary agent described in example is methanol, and the solid particles surface modifying agent is quaternary ammonium salt；It is warming up to after 75 DEG C 75
DEG C keep the temperature and continue stirring 30 minutes after, stop heating, cool down, be cooled to room temperature while stirring, be added 25 parts by weight toluene
It is stirring while adding as solvent, it stirs 20 minutes, discharges to get Compositional type heavy oil low-temperature demulsifier E is arrived.
The Compositional type heavy oil low-temperature demulsifier that above-described embodiment 1-5 is prepared is when being used for thick oil emulsion breaking, demulsification
Temperature is 60~80 DEG C, and the dosage of the Compositional type heavy oil low-temperature demulsifier is 50~150ppm.It is aqueous after heavy oil dehydration to be lower than
0.8%, sewage with oil is lower than 1500ppm.
It wherein, is 70 DEG C in demulsification temperature, the dosage of the Compositional type heavy oil low-temperature demulsifier is the condition of 100ppm
Under, the Compositional type heavy oil low-temperature demulsifier that embodiment 1-5 is prepared is when being respectively used to variety classes thick oil emulsion breaking
Effect data is as shown in the table, and wherein variety classes viscous crude includes: low sand content high viscosity viscous crude (being indicated in table 1 with viscous crude A),
Sand factor is 5wt%, viscosity 15000mPa.s；High sand content high viscosity viscous crude (being indicated in table 1 with viscous crude B), sand factor is
20wt%, viscosity 15000mPa.s；Low sand content hyperviscosity viscous crude (being indicated in table 1 with viscous crude C), sand factor 5wt%,
Viscosity is 30000mPa.s；High sand content hyperviscosity viscous crude (being indicated in table 1 with viscous crude D), sand factor 20wt%, viscosity
For 30000mPa.s.
When the Compositional type heavy oil low-temperature demulsifier made from 1 embodiment 1-5 of table is respectively used to variety classes thick oil emulsion breaking
Effect data
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (10)
1. a kind of Compositional type heavy oil low-temperature demulsifier, it is characterised in that: the raw material components of the Compositional type heavy oil low-temperature demulsifier
With the parts by weight of each raw material components are as follows:
A, polyethylene polyamine polyoxyethylene polyoxypropylene ether: 10~20 parts by weight；
B, phenolic resin polyoxyethylene polyoxypropylene ether: 30~45 parts by weight；
C, multi-alpha ethylene polyamines polyoxyethylene polyoxypropylene ether: 5~15 parts by weight；
D, small organic molecule auxiliary agent: 10~20 parts by weight；
E, solid particles surface modifying agent: 3~10 parts by weight；
F: solvent: 20~30 parts by weight.
2. Compositional type heavy oil low-temperature demulsifier according to claim 1, it is characterised in that: the Compositional type viscous crude low temperature is broken
The parts by weight of the raw material components of emulsion and each raw material components are as follows:
A, polyethylene polyamine polyoxyethylene polyoxypropylene ether: 10~15 parts by weight；
B, phenolic resin polyoxyethylene polyoxypropylene ether: 30~40 parts by weight；
C, multi-alpha ethylene polyamines polyoxyethylene polyoxypropylene ether: 10~15 parts by weight；
D, small organic molecule auxiliary agent: 15~20 parts by weight；
E, solid particles surface modifying agent: 5~10 parts by weight；
F: solvent: 20~30 parts by weight.
3. Compositional type heavy oil low-temperature demulsifier according to claim 1, it is characterised in that: the Compositional type viscous crude low temperature is broken
The parts by weight of the raw material components of emulsion and each raw material components are as follows:
A, polyethylene polyamine polyoxyethylene polyoxypropylene ether: 10~20 parts by weight；
B, phenolic resin polyoxyethylene polyoxypropylene ether: 30~45 parts by weight；
C, multi-alpha ethylene polyamines polyoxyethylene polyoxypropylene ether: 5~10 parts by weight；
D, small organic molecule auxiliary agent: 15~20 parts by weight；
E, solid particles surface modifying agent: 3~8 parts by weight；
F: solvent: 25~30 parts by weight.
4. Compositional type heavy oil low-temperature demulsifier according to claim 1, it is characterised in that: the Compositional type viscous crude low temperature is broken
The parts by weight of the raw material components of emulsion and each raw material components are as follows:
A, polyethylene polyamine polyoxyethylene polyoxypropylene ether: 10~15 parts by weight；
B, phenolic resin polyoxyethylene polyoxypropylene ether: 35~45 parts by weight；
C, multi-alpha ethylene polyamines polyoxyethylene polyoxypropylene ether: 10~15 parts by weight；
D, small organic molecule auxiliary agent: 10~15 parts by weight；
E, solid particles surface modifying agent: 5~10 parts by weight；
F: solvent: 20~30 parts by weight.
5. Compositional type heavy oil low-temperature demulsifier according to claim 1 to 4, it is characterised in that: the small organic molecule
Auxiliary agent is methanol or ethyl alcohol or butyl.
6. Compositional type heavy oil low-temperature demulsifier according to claim 5, it is characterised in that: the solvent be benzene or toluene or
Methanol or ethyl alcohol.
7. Compositional type heavy oil low-temperature demulsifier according to claim 6, it is characterised in that: the solvent is benzene or toluene.
8. Compositional type heavy oil low-temperature demulsifier according to claim 6, it is characterised in that: the solid particles surface is modified
Agent is cationic Gemini surfactants or anionic type Gemini surface active agent.
9. the preparation method of Compositional type heavy oil low-temperature demulsifier described in claim 1-8 characterized by comprising will be specific
The polyethylene polyamine polyoxyethylene polyoxypropylene ether, the phenolic resin polyoxyethylene polyoxypropylene ether, multi-alpha ethylene of parts by weight
Four kinds of raw materials of polyamines polyoxyethylene polyoxypropylene ether and solid particles surface modifying agent are proportionally added into reaction kettle, in stirring bar
It is warming up to 60~75 DEG C under part, the small organic molecule auxiliary agent of specified weight part is added in temperature-rise period；
After temperature-rise period, continues to keep the temperature and stir 30~40 minutes, then stops heating, be cooled to room temperature while stirring,
The solvent is added by weight, and stirs 20~30 minutes, discharges to get the Compositional type heavy oil low-temperature demulsifier is arrived.
10. the method that the Compositional type heavy oil low-temperature demulsifier that claim 9 is prepared is used for thick oil emulsion breaking, feature exist
In: the viscosity of the viscous crude is greater than 10000mPa.s, and demulsification temperature is 60~80 DEG C, the Compositional type heavy oil low-temperature demulsifier
Dosage is 50~150ppm.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112048336A (en) * | 2020-07-31 | 2020-12-08 | 东营东方化学工业有限公司 | Demulsification dehydration additive suitable for heavy crude oil and preparation method thereof |
| 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 |
| CN115449394A (en) * | 2021-06-09 | 2022-12-09 | 中国石油天然气股份有限公司 | Demulsifier and preparation method thereof |
| CN115772400A (en) * | 2022-12-01 | 2023-03-10 | 克拉玛依中科恒信科技有限责任公司 | Composite demulsifier for acidizing and fracturing and preparation method thereof |
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| CN102373077A (en) * | 2010-08-25 | 2012-03-14 | 中国石油天然气股份有限公司 | Extra-heavy oil functional demulsifier as well as preparation and application thereof |
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| CN101029252A (en) * | 2007-03-23 | 2007-09-05 | 中国石油天然气股份有限公司 | Cryogenic dewatering demulsifier of crude-oil extract |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112048336A (en) * | 2020-07-31 | 2020-12-08 | 东营东方化学工业有限公司 | Demulsification dehydration additive suitable for heavy crude oil and preparation method thereof |
| 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 |
| CN115449394A (en) * | 2021-06-09 | 2022-12-09 | 中国石油天然气股份有限公司 | Demulsifier and preparation method thereof |
| CN115772400A (en) * | 2022-12-01 | 2023-03-10 | 克拉玛依中科恒信科技有限责任公司 | Composite demulsifier for acidizing and fracturing and preparation method thereof |
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Application publication date: 20190628 |