CN109652116A - Crude oil Produced Liquid low temperature dewatering demulsifier and preparation method thereof - Google Patents
Crude oil Produced Liquid low temperature dewatering demulsifier and preparation method thereof Download PDFInfo
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- CN109652116A CN109652116A CN201811218094.4A CN201811218094A CN109652116A CN 109652116 A CN109652116 A CN 109652116A CN 201811218094 A CN201811218094 A CN 201811218094A CN 109652116 A CN109652116 A CN 109652116A
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- crude oil
- produced liquid
- oil produced
- demulsifier
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- 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
Abstract
The invention discloses a kind of crude oil Produced Liquid low temperature dewatering demulsifiers and preparation method thereof.The demulsifier is mainly made of the raw material of following weight proportion: polyoxyethylene polyoxypropylene ether does 25~40 parts of agent, 30~40 parts of alkylsulfonate, 5~10 parts of hydramine, 20~40 parts of methanol.Molecule of the invention has stronger surface-active ability, wetting ability and flocculation coalescence ability, it is at low ambient temperatures, good demulsification can be realized with faster de-emulsification speed to crude oil Produced Liquid, so as to reliably be satisfied with the demulsification technology requirement of low temperature crude oil extraction fluid dewatering, it is practical, remarkable in economical benefits.
Description
Technical field
The present invention relates to crude oil demulsifier, the demulsification of specifically a kind of crude oil Produced Liquid breaking emulsion and dewatering under cryogenic
The preparation method of agent and the demulsifier.
Background technique
Petroleum that oilfield exploitation goes out, not through processing is crude oil Produced Liquid, contains water in crude oil Produced Liquid, this
Enter high water cut viscous heavy crude oil especially with oil field, the composite water cut of the most of crude oil Produced Liquid produced has been up to
60% or more.
The crude oil Produced Liquid that oilfield exploitation goes out generally is intended to the dehydration that transport carries out water-oil separating to joint gathering station
's.Due to the well site in each oil field comparatively disperse in addition the crude oil Produced Liquid of some blocks be by vehicle draw in a manner of transport to
Joint gathering station, the haulage time that this will lead to crude oil Produced Liquid is long.Crude oil Produced Liquid is transported and is deposited for a long time
Physical property variation can occur during storage, this will increase the working process cost of crude oil Produced Liquid.In view of this, for energy conservation drop
Consumption, the working process cost for reducing crude oil Produced Liquid, crude oil Produced Liquid need to carry out crude oil Produced Liquid in transport and storage
Cooling processing.
Though however, reduce crude oil Produced Liquid transport and storage temperature be able to achieve it is energy-saving, to reduce at post-production
Cost is managed, but the technical problem encountered is, in crude oil Produced Liquid working process, how under cryogenic to crude oil Produced Liquid
Breaking emulsion and dewatering is carried out, so that the breaking emulsion and dewatering technical difficulty of crude oil Produced Liquid under cryogenic increases.This is because in low temperature
Under environment, conventional crude demulsifier is poor with the demulsification that general quantity is added in crude oil Produced Liquid, live low temperature dewatering experiment
Water phase oil content after showing one section of free abjection can increase and the water content of outer oil transportation can rise, that is to say, that will be conventional
Demulsifier additive amount by is added in the crude oil Produced Liquid of low temperature when carrying out breaking emulsion and dewatering, and water-oil separating speed is slow and grease
Inferior separating effect can not only generate the waste water containing a large amount of oil liquid in this way, but also the water content of gained oil product is larger, this will increase original
The working process cost of oily Produced Liquid and waste.
For a long time, in the industry always all in the demulsifier of research crude oil Produced Liquid dehydration at low ambient temperatures.From 20 generation
Record the fifties since, state, inside and outside research crude oil extraction fluid dewatering demulsifier, mainly with propylene oxide and ethylene oxide
The polyether type demulsifying agent that macromolecule nonionic surfactant based on block copolymer is formed, the demulsifier at normal temperature with
A small amount of be added can form quick and good breaking emulsion and dewatering effect to crude oil Produced Liquid, but its desired demulsification temperature compared with
Height, if carry out breaking emulsion and dewatering under applying it to the cryogenic conditions of crude oil Produced Liquid, de-emulsification speed and demulsification still compared with
Difference, it is ideal not to the utmost.
Summary of the invention
Technical purpose of the invention is: particularity and existing crude oil demulsifier for above-mentioned crude oil Produced Liquid are not
Foot provides a kind of fast de-emulsification speed at low ambient temperatures, the good crude oil low-temperature dehydration demulsifier of demulsification and the demulsification
The preparation method of agent.
The present invention realizes its technical purpose the technical scheme adopted is that a kind of crude oil Produced Liquid low temperature dewatering is demulsified
Agent, the demulsifier are mainly made of the raw material of following weight proportion:
Polyoxyethylene polyoxypropylene ether do 25~40 parts of agent,
30~40 parts of alkylsulfonate,
5~10 parts of hydramine,
20~40 parts of methanol.
One of preferably, the polyoxyethylene polyoxypropylene ether does the molecular weight 3500~5000 of agent.Further
, it is using phenolic resin as initiator that the polyoxyethylene polyoxypropylene ether, which does agent, and elder generation and propylene oxide are in 150 DEG C of temperature conditions
Lower generation polyoxyethylene ether, then polymerize under the conditions of 135~145 DEG C of temperature with ethylene oxide and be made.Alternatively, the polyoxypropylene
It is using phenol-amine resin as initiator that polyoxyethylene ether, which does agent, and elder generation and propylene oxide generate polyoxyethylene under the conditions of 150 DEG C of temperature
Ether, then polymerize under the conditions of 135~145 DEG C of temperature with ethylene oxide and be made.
One of preferably, the alkylsulfonate be cetyl benzenesulfonic acid sodium, myristyl benzene sulfonic acid sodium salt or
Neopelex.
One of preferably, the hydramine is monoethanolamine or triethanolamine.
A kind of preparation method of above-mentioned crude oil Produced Liquid low temperature dewatering demulsifier, the preparation method includes following order
Step:
Polyoxyethylene polyoxypropylene ether is done agent to step 1. and alkylsulfonate is separately added into reaction kettle, stirs evenly；
Hydramine is added in reaction kettle by step 2., at least stirring 30min, is stirred evenly；
Methanol is added in reaction kettle by step 3., at least stirring 10min, is stirred evenly up to demulsifier.
The method have the benefit that: above-mentioned demulsifier is broken to be conducive to paraffin fundamental mode crude oil demulsification and its low temperature
Milkiness preferably can do agent as main body to be crosslinked, to have preferable water-soluble alkylsulfonate by polyoxyethylene polyoxypropylene ether
As crosslinking agent, so that alkylsulfonate and polyoxyethylene polyoxypropylene ether is done agent and carry out esterification, reaction obtained material can
There is good demulsification to crude oil Produced Liquid at low ambient temperatures, while being aided with hydramine and previous reaction obtained material is carried out
Alkali neutralization processing, obtains demulsifier product, and the molecule in the demulsifier product has stronger surface-active ability, wetting ability
With flocculation coalescence ability good demulsification can be realized with faster de-emulsification speed to crude oil Produced Liquid at low ambient temperatures
Effect, so as to reliably be satisfied with the demulsification technology requirement of low temperature crude oil extraction fluid dewatering, practical, economic benefit is aobvious
It writes.
Specific embodiment
The present invention relates to crude oil demulsifier, the demulsifier of specifically a kind of crude oil Produced Liquid dehydration under cryogenic,
And the preparation method of the demulsifier, technology contents of the invention are described in detail with multiple embodiments below.
Embodiment 1
The present invention is mainly made of the raw material of following weight proportion: polyoxyethylene polyoxypropylene ether does 30 parts of agent, cetyl
36 parts of benzene sulfonic acid sodium salt, 8 parts of triethanolamine, 26 parts of methanol.
Wherein, polyoxyethylene polyoxypropylene ether does the molecular weight 3500~5000 of agent.The polyoxyethylene polyoxypropylene ether is dry
Agent is using phenolic resin as initiator, and elder generation and propylene oxide generate polyoxyethylene ether under the conditions of about 150 DEG C of temperature (molecular weight are about
For 3000), then it polymerize under the conditions of about 140 DEG C of temperature with ethylene oxide and (molecular weight is 3500~5000) is made.
Preparation method of the invention includes following order step:
Polyoxyethylene polyoxypropylene ether is done agent to step 1. and alkylsulfonate is separately added into reaction kettle, stirs evenly；
Hydramine is added in reaction kettle by step 2., is stirred 30min, is stirred evenly；
Methanol is added in reaction kettle by step 3., stirs 10min, is stirred evenly up to demulsifier.
Embodiment 2
The present invention is mainly made of the raw material of following weight proportion: polyoxyethylene polyoxypropylene ether does 28 parts of agent, myristyl
40 parts of benzene sulfonic acid sodium salt, 10 parts of monoethanolamine, 22 parts of methanol.
Wherein, polyoxyethylene polyoxypropylene ether does the molecular weight 3500~5000 of agent.The polyoxyethylene polyoxypropylene ether is dry
Agent is using phenol-amine resin as initiator, and elder generation and propylene oxide generate polyoxyethylene ether under the conditions of about 150 DEG C of temperature (molecular weight are about
For 3000), then it polymerize under the conditions of about 138 DEG C of temperature with ethylene oxide and (molecular weight is 3500~5000) is made.
Preparation method of the invention includes following order step:
Polyoxyethylene polyoxypropylene ether is done agent to step 1. and alkylsulfonate is separately added into reaction kettle, stirs evenly；
Hydramine is added in reaction kettle by step 2., is stirred 30min, is stirred evenly；
Methanol is added in reaction kettle by step 3., stirs 10min, is stirred evenly up to demulsifier.
Embodiment 3
The present invention is mainly made of the raw material of following weight proportion: polyoxyethylene polyoxypropylene ether does 26 parts of agent, cetyl
32 parts of benzene sulfonic acid sodium salt, 7 parts of monoethanolamine, 35 parts of methanol.
Wherein, polyoxyethylene polyoxypropylene ether does the molecular weight 3500~5000 of agent.The polyoxyethylene polyoxypropylene ether is dry
Agent is using phenol-amine resin as initiator, and elder generation and propylene oxide generate polyoxyethylene ether under the conditions of about 150 DEG C of temperature (molecular weight are about
For 3000), then it polymerize under the conditions of about 145 DEG C of temperature with ethylene oxide and (molecular weight is 3500~5000) is made.
Preparation method of the invention includes following order step:
Polyoxyethylene polyoxypropylene ether is done agent to step 1. and alkylsulfonate is separately added into reaction kettle, stirs evenly；
Hydramine is added in reaction kettle by step 2., is stirred 30min, is stirred evenly；
Methanol is added in reaction kettle by step 3., stirs 10min, is stirred evenly up to demulsifier.
Embodiment 4
The present invention is mainly made of the raw material of following weight proportion: polyoxyethylene polyoxypropylene ether does 32 parts of agent, dodecyl
30 parts of benzene sulfonic acid sodium salt, 6 parts of triethanolamine, 32 parts of methanol.
Wherein, polyoxyethylene polyoxypropylene ether does the molecular weight 3500~5000 of agent.The polyoxyethylene polyoxypropylene ether is dry
Agent is using phenolic resin as initiator, and elder generation and propylene oxide generate polyoxyethylene ether under the conditions of about 150 DEG C of temperature (molecular weight are about
For 3000), then it polymerize under the conditions of about 135 temperature with ethylene oxide and (molecular weight is 3500~5000) is made.
Preparation method of the invention includes following order step:
Polyoxyethylene polyoxypropylene ether is done agent to step 1. and alkylsulfonate is separately added into reaction kettle, stirs evenly；
Hydramine is added in reaction kettle by step 2., is stirred 30min, is stirred evenly；
Methanol is added in reaction kettle by step 3., stirs 10min, is stirred evenly up to demulsifier.
Embodiment 5
The present invention is mainly made of the raw material of following weight proportion: polyoxyethylene polyoxypropylene ether does 25 parts of agent, cetyl
30 parts of benzene sulfonic acid sodium salt, 5 parts of triethanolamine, 20 parts of methanol.
Wherein, polyoxyethylene polyoxypropylene ether does the molecular weight 3500~5000 of agent.The polyoxyethylene polyoxypropylene ether is dry
Agent is using phenolic resin as initiator, and elder generation and propylene oxide generate polyoxyethylene ether under the conditions of about 150 DEG C of temperature (molecular weight are about
For 3000), then it polymerize under the conditions of about 142 DEG C of temperature with ethylene oxide and (molecular weight is 3500~5000) is made.
Preparation method of the invention includes following order step:
Polyoxyethylene polyoxypropylene ether is done agent to step 1. and alkylsulfonate is separately added into reaction kettle, stirs evenly；
Hydramine is added in reaction kettle by step 2., is stirred 32min, is stirred evenly；
Methanol is added in reaction kettle by step 3., stirs 12min, is stirred evenly up to demulsifier.
Embodiment 6
The present invention is mainly made of the raw material of following weight proportion: polyoxyethylene polyoxypropylene ether does 35 parts of agent, myristyl
38 parts of benzene sulfonic acid sodium salt, 9 parts of monoethanolamine, 30 parts of methanol.
Wherein, polyoxyethylene polyoxypropylene ether does the molecular weight 3500~5000 of agent.The polyoxyethylene polyoxypropylene ether is dry
Agent is using phenol-amine resin as initiator, and elder generation and propylene oxide generate polyoxyethylene ether under the conditions of about 150 DEG C of temperature (molecular weight are about
For 3000), then it polymerize under the conditions of about 136 DEG C of temperature with ethylene oxide and (molecular weight is 3500~5000) is made.
Preparation method of the invention includes following order step:
Polyoxyethylene polyoxypropylene ether is done agent to step 1. and alkylsulfonate is separately added into reaction kettle, stirs evenly；
Hydramine is added in reaction kettle by step 2., is stirred 35min, is stirred evenly；
Methanol is added in reaction kettle by step 3., stirs 15min, is stirred evenly up to demulsifier.
Embodiment 7
The present invention is mainly made of the raw material of following weight proportion: polyoxyethylene polyoxypropylene ether does 40 parts of agent, cetyl
34 parts of benzene sulfonic acid sodium salt, 8 parts of monoethanolamine, 40 parts of methanol.
Wherein, polyoxyethylene polyoxypropylene ether does the molecular weight 3500~5000 of agent.The polyoxyethylene polyoxypropylene ether is dry
Agent is using phenol-amine resin as initiator, and elder generation and propylene oxide generate polyoxyethylene ether under the conditions of about 150 DEG C of temperature (molecular weight are about
For 3000), then it polymerize under the conditions of about 141 DEG C of temperature with ethylene oxide and (molecular weight is 3500~5000) is made.
Preparation method of the invention includes following order step:
Polyoxyethylene polyoxypropylene ether is done agent to step 1. and alkylsulfonate is separately added into reaction kettle, stirs evenly；
Hydramine is added in reaction kettle by step 2., is stirred 33min, is stirred evenly；
Methanol is added in reaction kettle by step 3., stirs 15min, is stirred evenly up to demulsifier.
Embodiment 8
The present invention is mainly made of the raw material of following weight proportion: polyoxyethylene polyoxypropylene ether does 38 parts of agent, dodecyl
35 parts of benzene sulfonic acid sodium salt, 7 parts of triethanolamine, 28 parts of methanol.
Wherein, polyoxyethylene polyoxypropylene ether does the molecular weight 3500~5000 of agent.The polyoxyethylene polyoxypropylene ether is dry
Agent is using phenolic resin as initiator, and elder generation and propylene oxide generate polyoxyethylene ether under the conditions of about 150 DEG C of temperature (molecular weight are about
For 3000), then it polymerize under the conditions of about 140 DEG C of temperature with ethylene oxide and (molecular weight is 3500~5000) is made.
Preparation method of the invention includes following order step:
Polyoxyethylene polyoxypropylene ether is done agent to step 1. and alkylsulfonate is separately added into reaction kettle, stirs evenly；
Hydramine is added in reaction kettle by step 2., is stirred 40min, is stirred evenly；
Methanol is added in reaction kettle by step 3., stirs 13min, is stirred evenly up to demulsifier.
Demulsifier made from the embodiment of the present invention 1,2,3 and 4 with bottle examination method and the conventional crude demulsifier that uses of scene into
Gone demulsification evaluation experimental, the crude oil Produced Liquid sample of experiment is exploited by oil field at home, crude oil Produced Liquid it is aqueous
Be 63%, test it is obtained shown in evaluation results are shown in Table 1 (note that A represents 1 demulsification obtained according to an embodiment of the present invention in table
Agent, B represent demulsifier made from 2, C according to an embodiment of the present invention and represent demulsifier made from 3, D generation according to an embodiment of the present invention
Demulsifier made from 4, E represent the conventional crude demulsifier that scene uses to table according to an embodiment of the present invention).
The demulsification evaluation experimental for the conventional crude demulsifier that the demulsifier produced by the present invention of table 1 and scene use
As a result
It can be clearly shown by experimental result shown in table 1, demulsifier of the invention has crude oil Produced Liquid preferable low
Warm demulsification performance, especially demulsifier C, under the conditions of 25 DEG C of temperature, when dosage is 50ppm, the dehydration rate of 15min
44.3% can be reached, for the conventional demulsifier that the scene of comparison uses, reach the live conventional demulsifier used in 60 DEG C of temperature
Under the conditions of add the demulsification of 100ppm.It is possible thereby to clearly show, the present invention fast, low-temperature demulsification with demulsification starting speed
Thorough advantage, while when the temperature that is demulsified improves, it is more advantageous to the demulsification for improving the low-temperature demulsifying agent.
The above various embodiments is only to illustrate the present invention, rather than its limitations；Although referring to the various embodiments described above to this hair
It is bright to be described in detail, those skilled in the art should understand that: the present invention still can be to the various embodiments described above
In specific technical solution modify perhaps equivalent replacement of some of the technical features and these modifications or replace
It changes, the spirit and scope of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (7)
1. a kind of crude oil Produced Liquid low temperature dewatering demulsifier, which is characterized in that the demulsifier is mainly matched by following weight
The raw material of ratio forms:
Polyoxyethylene polyoxypropylene ether do 25~40 parts of agent,
30~40 parts of alkylsulfonate,
5~10 parts of hydramine,
20~40 parts of methanol.
2. crude oil Produced Liquid low temperature dewatering demulsifier according to claim 1, which is characterized in that the polyoxypropylene polyoxy
Vinethene does the molecular weight 3500~5000 of agent.
3. crude oil Produced Liquid low temperature dewatering demulsifier according to claim 2, which is characterized in that the polyoxypropylene polyoxy
It is using phenolic resin as initiator that vinethene, which does agent, and elder generation and propylene oxide generate polyoxyethylene ether under the conditions of 150 DEG C of temperature, then
It polymerize under the conditions of 135~145 DEG C of temperature with ethylene oxide and is made.
4. crude oil Produced Liquid low temperature dewatering demulsifier according to claim 2, which is characterized in that the polyoxypropylene polyoxy
It is using phenol-amine resin as initiator that vinethene, which does agent, and elder generation and propylene oxide generate polyoxyethylene ether under the conditions of 150 DEG C of temperature, then
It polymerize under the conditions of 135~145 DEG C of temperature with ethylene oxide and is made.
5. crude oil Produced Liquid low temperature dewatering demulsifier according to claim 1, which is characterized in that the alkylsulfonate is
Cetyl benzenesulfonic acid sodium, myristyl benzene sulfonic acid sodium salt or neopelex.
6. crude oil Produced Liquid low temperature dewatering demulsifier according to claim 1, which is characterized in that the hydramine is monoethanol
Amine or triethanolamine.
7. the preparation method of crude oil Produced Liquid low temperature dewatering demulsifier described in a kind of claim 1, which is characterized in that the system
Preparation Method includes following order step:
Polyoxyethylene polyoxypropylene ether is done agent to step 1. and alkylsulfonate is separately added into reaction kettle, stirs evenly；
Hydramine is added in reaction kettle by step 2., at least stirring 30min, is stirred evenly；
Methanol is added in reaction kettle by step 3., at least stirring 10min, is stirred evenly up to demulsifier.
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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 |
| CN112342052A (en) * | 2020-11-10 | 2021-02-09 | 天津新翔油气技术有限公司 | Low-temperature composite demulsifier for crude oil and preparation method thereof |
| CN112812819A (en) * | 2020-12-30 | 2021-05-18 | 西安吉利电子化工有限公司 | Low-temperature crude oil demulsifier and preparation method thereof |
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| CN112342052A (en) * | 2020-11-10 | 2021-02-09 | 天津新翔油气技术有限公司 | Low-temperature composite demulsifier for crude oil and preparation method thereof |
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